All tools
Every one of the 318 tools, grouped by category — all free and running entirely in your browser.
Absolute Difference Calculator
Calculate the absolute difference between two numbers with percentage comparisons and midpoint analysis.
Age Calculator
Calculate your exact age in years, months and days from your date of birth.
Aspect Ratio Calculator
Calculate aspect ratios, simplify dimensions, and solve for missing width or height with a live visual preview.
Average Calculator
Calculate the mean (average) of any set of numbers instantly, including spread and uncertainty.
BMI Calculator
Instantly calculate your Body Mass Index with metric or imperial units, WHO or Asian standards, plus BMI Prime, healthy weight range, ideal weight, and Ponderal Index.
BMR & TDEE Calculator
Calculate your Basal Metabolic Rate and daily calorie needs for weight loss, gain, or maintenance.
Break‑Even Calculator
Instantly calculate your break‑even point, target profit units, and margin of safety.
Business Days Calculator
Calculate business days between dates, add/subtract working days, and exclude custom weekends & holidays. Instant, free online tool with detailed breakdowns.
Calorie Calculator – Free TDEE, BMR & Macro Calculator for Weight Loss or Gain
Calculate your daily calorie needs for weight loss, maintenance, or muscle gain. Get personalized BMR, TDEE, and macro splits (protein, carbs, fats) with safety warnings.
CSS Border Radius Generator - Create Rounded Corners & Blob Shapes
Free online CSS border-radius generator with live preview. Create rounded corners, circles, pill shapes, and organic blob shapes with per-corner control. Copy CSS & Tailwind code instantly.
Date Calculator
Calculate days between dates, add or subtract durations, and find exact age from a birthday — with business days and full breakdowns.
Days Between Dates Calculator
Calculate the exact number of days, weeks, months, and years between two dates with support for inclusive/exclusive counting, custom weekends, and holiday exclusions.
DPI Calculator – PPI, Print DPI & Screen Density
Calculate screen PPI, print DPI, dot pitch, and retina distance instantly from any resolution.
Fraction Calculator
Perform arithmetic operations on proper, improper, and mixed fractions with instant step-by-step solutions.
Fuel Cost Calculator
Calculate fuel cost for any trip using km or miles, MPG, L/100km, or km/L with support for multiple currencies and fuel types
GPA Calculator
Calculate semester, cumulative, and target GPA with weighted courses (Honors/AP). Instant results, no signup.
Habit Streak Counter
Track daily habit streaks, missed days, and completion consistency at a glance.
HEX ↔ RGB Converter
Convert colors instantly between HEX, RGB, and RGBA formats with real-time smart detection and WCAG contrast diagnostics.
Hourly Wage Calculator
Instantly convert hourly, daily, weekly, monthly, and yearly pay — with overtime and unpaid time off built in.
Margin Calculator: Calculate Profit Margin, Markup & Selling Price
Free online margin calculator to compute profit margin, markup, selling price, and cost in real-time. Compare against 30+ industry benchmarks.
Mean Calculator
Calculate arithmetic, geometric, harmonic, and trimmed means instantly with full descriptive statistics.
Median and Mode Calculator
Calculate the median and mode of a dataset instantly with real-time updates and smart input parsing.
Meeting Cost Calculator
Calculate the true cost of meetings with multiple attendee groups, overhead, focus recovery time, and annual projections.
Online Stopwatch Timer – Free Digital Stop Watch with Laps
Free online stopwatch timer with lap splitting, millisecond precision, and session persistence. Perfect for sports, study, workouts, and timing tasks.
Percentage Calculator
Work out percentages three ways: X% of Y, X as a % of Y, and percentage increase or decrease.
Percentage Increase/Decrease Calculator
Calculate percentage increase, decrease, percent change, and reverse values instantly.
PPI Calculator – Pixels Per Inch for Monitors, Phones & Screens
Calculate PPI (Pixels Per Inch) for any screen or monitor. Compare pixel density, dot pitch, and optimal viewing distance for gaming, productivity, or design.
Probability Calculator
Calculate probabilities for events, unions, intersections, Bayes’ theorem, and repeated trials.
Proportion Calculator
Solve proportions, find missing values, and verify ratios with direct or inverse proportion support.
Ratio Calculator
Simplify ratios, solve proportions, scale ratios, and convert to percentages with instant results and visuals.
Resolution Calculator
Calculate screen resolution details, aspect ratio, PPI, print size, and scale dimensions instantly.
Salary Calculator
Convert salary across pay periods and estimate accurate take-home pay with taxes and deductions.
Scientific Calculator
Free online scientific calculator with support for trigonometry, logarithms, exponents, and complex expressions.
Standard Deviation Calculator
Calculate standard deviation, variance, mean, median, range, and other descriptive statistics for sample and population datasets.
Time Duration Calculator
Calculate the exact duration between two dates and times, with options to exclude weekends for business days.
Time Zone Converter
Convert time between time zones with DST-aware offsets, date shifts, and quick source/target swapping.
Timestamp Converter - Unix Epoch to Date & Vice Versa
Free online Unix timestamp converter. Instantly convert epoch timestamps (seconds & milliseconds) to readable dates in UTC and local time, and vice versa.
Tip Calculator & Bill Splitter
Instantly calculate your tip, split the bill evenly, or itemize costs perfectly among friends.
VAT Calculator
Calculate VAT, net, and gross amounts instantly.
Week Number Calculator
Find the week number for any date — or look up the exact dates for any week — using ISO 8601, US, or Simple systems.
Work Hours Calculator
Calculate work hours, break deductions, overtime, weekly totals, and overnight shifts instantly online.
Atbash Cipher
Encode and decode text using the Atbash cipher.
Caesar Cipher
Encrypt text with a custom Caesar shift cipher or decrypt unknown messages instantly.
One-Time Pad Generator
Generate cryptographically random one-time pads and encrypt or decrypt messages with modular or XOR cipher modes entirely in your browser.
Playfair Cipher Encrypt & Decrypt
Encrypt and decrypt text using the Playfair cipher with interactive 5x5 key square and visual step-by-step guide.
ROT13 Encoder & Decoder
Encode and decode text with ROT13, ROT5, ROT18, ROT47, and custom shift ciphers.
Vigenère Cipher
Encrypt and decrypt text using the Vigenère keyword cipher with advanced options like autokey, case control, and non‑letter preservation.
CMYK to RGB
Convert CMYK print colors to RGB values instantly with live preview, hex output, and copy-ready results.
Color Blindness Simulator
Preview how images and designs appear to people with protanopia, deuteranopia, tritanopia, and other color vision deficiencies
Color Escape Code Generator
Generate ANSI terminal color escape codes for styles, foregrounds, and backgrounds across bash, python, javascript, and more.
Color Mixer
Blend two colors together at custom percentages with multiple blend modes, full color space support, and accessibility analysis
Color Picker & Contrast Checker
Pick colors, convert between formats (HEX, RGB, HSL, HSV, CMYK), and check WCAG contrast ratios in real-time.
Complementary Color Finder
Instantly find harmonious complementary colors for your design projects.
Contrast Checker
Check WCAG and APCA color contrast for accessible text and UI colors.
CSS Color Names Finder
Search named CSS colors by name, hex, RGB, or HSL and find the closest match instantly.
Free Color Palette Generator – Random & Harmony Palettes
Generate beautiful, accessible color palettes in seconds. Choose from random golden-ratio palettes, 5 color harmony rules, lock favourite colours, simulate color blindness, and export to CSS, Tailwind, or JSON. No sign-up.
Gradient Generator
Create stunning multi-layer CSS gradients with live preview, animations, gradient text, and borders. Export ready-to-use code instantly.
HSL to RGB / Hex Converter
Convert HSL and HSLA color strings to HEX, RGB, HSV, and CMYK formats with real-time contrast checking and harmony generation.
Image Pixel Average Color
Extract the dominant average color from any image with multiple algorithms, color space outputs, and accessibility contrast analysis. 100% private browser processing.
Random Color Generator
Generate random HEX, RGB, and HSL colors instantly for web design, branding, UI, graphics, and creative projects.
RGB to HSL Converter
Convert RGB colors to HSL and vice-versa with real-time preview, harmonies, and accessibility checks.
Tint & Shade Generator
Generate color tints and shades from any base color with customizable steps. Export to CSS, SASS, Tailwind, JSON, and CSV formats. Includes reverse mode to find base colors from known tints or shades.
Base64 Encoder / Decoder for Text, Images & Docs
Instantly convert plain text, images, PDFs, and documents to Base64 strings or decode Base64 data arrays back into downloadable file assets.
Binary to Hex
Convert binary numbers to hexadecimal quickly with support for padding, two's complement, bit-widths, grouping and BigInt-sized inputs
Camel, Snake, Kebab Case Converter
Effortlessly convert text between camelCase, snake_case, kebab-case, PascalCase, and more for developers and writers.
CSV to JSON Converter
Convert CSV to JSON instantly in your browser – auto-detect delimiters, handle quotes and line breaks, create nested objects, and export clean JSON with zero uploads.
Data Storage Converter
Convert between bytes, KB, MB, GB, TB and more. Supports both decimal (SI) and binary (IEC) units with real-world size comparisons.
dB to Linear Converter
Convert decibels (dB) to linear power or amplitude ratios and vice versa for audio, RF, and signal processing applications.
Decimal to Time Converter
Convert decimal hours to hours and minutes format instantly.
HTML to Markdown Converter
Convert HTML to Markdown and Markdown to HTML instantly in your browser. Free online converter with auto-format detection, GFM table support, and round-trip fidelity.
IP Address to Binary Converter
Convert any IPv4 address into its 32-bit binary representation instantly with a fast and accurate IP address to binary converter.
JSON to CSV Converter
Convert JSON to CSV instantly in your browser – flatten nested objects, handle arrays, choose delimiters, and export Excel-ready files with zero uploads.
JSON to TypeScript Types Converter
Instantly convert JSON data to accurate TypeScript interfaces and types with advanced customization options
Morse Code to Text
Convert Morse code dots and dashes to readable text and vice versa with instant bidirectional translation
NATO Alphabet Converter
Spell text using the NATO phonetic alphabet with instant two-way conversion and copy-ready output.
Number Base Converter
Convert numbers between any base from 2 to 36 with arbitrary precision, fractions, and two's complement analysis.
Number System Converter
Convert between decimal, binary, octal, and hexadecimal with instant, exact, client-side results.
Number to Words Converter
Convert numbers to English words online. Supports short scale, long scale, Indian numbering, decimal handling, and currency mode.
Pig Latin Converter
Convert English text to Pig Latin and decode Pig Latin back to English with dialect options, punctuation handling, and word-by-word breakdowns.
Roman Numeral Converter
Convert numbers to Roman numerals and back — with step-by-step breakdown, date converter, and batch mode.
Text to Binary Converter - Binary to Text Online
Convert text to binary and binary to text online for free. Supports ASCII, UTF-8, and UTF-16 with customizable formatting.
Unit Converter
Convert length, weight, temperature, speed, area, volume, data, time, pressure, energy, angle, and power — instantly, in both directions.
Box Model Visualizer
Interactive CSS box model visualizer with real-time editing of margin, border, padding, and content dimensions
CSS Animation Generator
Generate CSS keyframe animation code
CSS Button Generator
Design and generate custom CSS button styles with live preview and instant code export.
CSS Clip Path Generator
Generate responsive CSS clip-path shapes with a visual polygon editor and instant CSS code.
CSS Cursor Generator
Preview and generate custom CSS cursor styles with standard keywords or custom image URLs and hotspots.
CSS Filter Generator - Visual Filter Builder & Color Matcher
Generate CSS filter and backdrop-filter code with live sliders, presets, and a black-to-hex color solver.
CSS Glassmorphism Generator
Create stunning glassmorphism effects with customizable backdrop filters, frosted glass backgrounds, and modern CSS styling
CSS Gradient Text Generator
Generate beautiful gradient text effects using CSS background-clip, webkit text fill, and modern gradient styles. Create linear, radial, and conic gradient typography with live preview and instant code export.
CSS Grid Generator
Visual CSS Grid Generator with live preview. Create responsive grid layouts, customize columns, rows, gaps, alignments, and items instantly. Copy production-ready CSS code.
CSS Loader Spinner Generator
Generate animated CSS loading spinners with customizable colors, sizes, and speeds. Copy pure CSS and HTML instantly for any project.
CSS Minifier
Minify CSS instantly online. Reduce file size, remove comments and whitespace, track savings with live stats.
CSS Neumorphism Generator
Generate soft neumorphism box-shadow CSS for modern UI designs
CSS Scrollbar Generator
Generate custom styled scrollbar CSS for WebKit and Firefox with live preview, presets, and one-click copy.
CSS Specificity Calculator
Instantly calculate the specificity score of any CSS selector, understand its impact on styling, and resolve cascade conflicts with ease.
CSS Text Shadow Generator
Generate CSS text-shadow styles with live preview, multi-layer support, presets, and export to CSS, Tailwind, or SCSS.
Flexbox Visual Playground
Interactive CSS flexbox playground with live preview, visual guides, and preset layouts for learning and prototyping
Age Difference Calculator
Calculate exact age gap between two birthdays in years, months, days, weeks and total days — perfect for couples, siblings and friends.
Countdown Timer
Free online countdown timer with live display, presets, target dates, progress ring, and alarm. Perfect for meetings, workouts, events, and presentations.
ISO Week Date Converter - ISO 8601 Week Calculator
Instantly convert any Gregorian date to ISO 8601 week notation and convert ISO week dates back to calendar dates with full week ranges.
Julian Date Converter
Convert between Gregorian calendar dates and Julian Day Numbers (JD) instantly. Supports full date and time in UTC.
Lunar Age Calculator
Calculate your age based on lunar months, lunar years, and Moon cycles using your date of birth.
Next Weekday Finder
Find the next occurrence of any weekday from any start date. Calculate multiple upcoming Mondays, Tuesdays, etc. instantly.
Quarter of Year Calculator
Find which financial quarter a date falls in, with calendar and fiscal quarter ranges.
Retirement Date Calculator
Calculate your exact retirement date from birth date and desired retirement age with life expectancy projections
Roman Numeral Date Plaque
Format any date as a Roman numeral plaque for weddings, anniversaries, and engraving.
Time Since Calculator
Show exact time elapsed since any past date and time, live down to the second.
.env File Generator
Quickly generate clean, properly-quoted .env files from key-value pairs — no more quoting errors or broken deployments.
.htaccess Redirect Builder
Generate error-free Apache .htaccess code for 301 redirects, HTTPS enforcement, and canonical URL routing.
ASCII Converter – Text to ASCII, Hex, Binary & Back
Convert text to ASCII codes and decode back in decimal, hex, binary, or octal — live, private, and 100% browser-based.
Binary Logic Gate Simulator
Simulate AND, OR, NOT, XOR, NAND, NOR, XNOR gates with interactive inputs and full truth tables.
Cron Expression Parser & Generator
Free online cron parser, validator, and generator. Get human-readable descriptions, next 10 run times in your timezone, and full Quartz support — 100% client-side.
CSS Box Shadow Generator
Create layered CSS box-shadow effects with a live preview and easy copy-to-clipboard
cURL Command Builder
Build and generate curl commands with a visual interface. Supports headers, authentication, request body, query parameters, and exports to multiple formats including PowerShell, HTTPie, and wget.
Dockerfile Generator
Generate a production-ready Dockerfile for Node.js, Python, Go, Rust, Java, Ruby, PHP, .NET, and static sites.
Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes online from text or files — free, instant, and runs entirely in your browser.
HTML Decoder & Encoder
Encode special characters into HTML entities or decode HTML entities back into readable text instantly in your browser.
HTML Minifier — Fast, Safe Online HTML Compression
Compress and minify HTML instantly in the browser with safe defaults, optional inline minification, and a preview of byte savings.
HTTP Status Code Reference
A comprehensive guide to HTTP status codes with detailed explanations and triage tips.
JavaScript Minifier
Compress and optimize JavaScript source code by removing comments, reducing whitespaces, and streamlining boolean values safely client-side.
JSON Diff Viewer
Compare two JSON documents side by side with structural and character-level diffing.
JSON Flatten Tool
Flatten nested JSON into dot-notation keys and unflatten back with configurable array notation, delimiters, and array handling.
JSON Path Tester
Test JSONPath expressions against JSON data instantly. Evaluate, debug, and validate JSONPath queries with live results and error highlighting.
JSON Schema Validator
Validate JSON data against a JSON Schema to ensure structure, types, and constraints are correct
JWT Decoder
Securely decode JSON Web Tokens (JWT) in your browser. View headers, payloads, and claims without sending data to a server.
Keycode Viewer
Show key code and key values for any keypress
Markdown Previewer
Free online Markdown previewer with live GFM rendering, themes, live stats, and auto table of contents — 100% private, no upload.
MIME Type Checker
Detect, validate and analyze MIME types from file extensions or content headers with security risk assessment
NPM Package.json Generator - Create & Validate Manifests
Generate valid, production-ready package.json files instantly with full npm validation, ESM and CLI presets, and smart exports.
PDF Analyzer
Inspect a PDF in your browser — version, structure, fonts, images, links, metadata, encryption, JavaScript, and attachments.
Regex Cheatsheet & Tester
Interactive regex reference with search, categories, and a live pattern tester. Copy tokens instantly and test patterns in your browser.
Regex Tester Online — Test, Debug & Validate Regex Instantly
Free online regex tester that runs 100% in your browser. Test patterns, highlight matches, inspect groups, preview replacements, and run multi-test suites for email, URL, and custom regex — no signup, no data upload.
SVG Optimizer
Minify and clean SVG markup to reduce file size while preserving visual quality. Remove metadata, comments, editor data, and optimize colors, paths, and IDs with configurable precision.
Tailwind CSS Class Reference
Interactive searchable reference for Tailwind CSS utility classes with live previews, CSS output, and arbitrary value support
User Agent Parser
Parse any User-Agent string to extract browser, OS, device, engine, CPU, and bot details instantly.
UUID Generator – Generate, Validate & Format UUIDs
Free online UUID generator for developers. Create random (v4), time-based (v1), time-ordered (v7), and nil UUIDs. Validate and format UUIDs instantly.
Base32 Encoder Decoder
Encode text or hex to Base32 (RFC 4648) and decode Base32 strings back to UTF-8 instantly in your browser.
Punycode Converter
Convert internationalized domain names (IDN) to Punycode and vice versa.
Quoted-Printable Encoder
Encode and decode MIME quoted-printable text in your browser.
URL Safe Base64 Encoder / Decoder
Encode and decode Base64 using the URL-safe alphabet (RFC 4648 §5) — replaces + with - and / with _ so output is safe in URLs, filenames, and JWTs without percent-encoding.
Budget Allocator
Split income using the 50/30/20 budget rule with custom percentages and expense tracking
CAGR Calculator
Calculate compound annual growth rate, reverse CAGR, and compare investment scenarios with year-by-year breakdowns
Discount Calculator
Calculate final prices, total savings, and markups with our free online discount calculator. Supports stacked discounts, multi-item carts, and tax.
Freelance Rate Calculator
Convert desired salary to freelance hourly rate with expenses, taxes, vacation, and profit margin
Inflation Calculator
Adjust any amount for inflation between years using official US CPI data. Past to present, present to past, future projections, and custom rates.
Price Per Unit Calculator
Compare bulk prices and find the cheapest cost per unit, ounce, gram, liter, or item.
ROI Calculator
Calculate return on investment (ROI) percentage from profit, revenue, or cash flow and cost.
Rule of 72 Calculator
Estimate investment doubling time from rate and required rate from doubling time.
JSON Formatter
Format, validate and pretty-print JSON. Catches syntax errors with line and column numbers.
XML Formatter/Validator
Free online XML formatter and validator. Beautify, minify, and validate XML instantly with detailed error reporting.
YAML Formatter & Validator — Beautify, Lint, and Convert YAML Online
Free online YAML formatter and validator. Beautify messy YAML, detect errors with line numbers, convert YAML to JSON, view tree structure, and copy results instantly. No upload needed.
Chinese Zodiac Calculator – Find Your Animal Sign, Element & Compatibility
Discover your Chinese zodiac animal by birth date or year. Includes element, Yin/Yang, stem‑branch, personality, and love compatibility.
Numerology Calculator
Calculate your Life Path, Expression, and Soul Urge numbers from your birth date and name.
Random Joke Generator
Get instant random jokes from a built-in bank of 60 clean jokes across 8 categories with filters, favorites, autoplay, and export.
Random Name Picker
Paste a list of names and instantly pick one or more random winners with a fair, unbiased selection.
Random Quote Generator
Get instant inspiration with random motivational and wisdom quotes from a curated local collection. Filter by category, search, favorite, and copy instantly.
Zodiac Sign Finder
Find your zodiac sign, traits, and compatibility instantly from your birth date
Barcode Generator - Free Code128 Creator Online
Generate Code128 barcodes online instantly. Create free printable SVG and PNG barcodes with custom sizes, colors, and text.
Dot Grid Generator
Generate printable dot grids for bullet journals, sketching, and calligraphy.
Dummy Data Generator
Generate realistic fake test data including names, emails, addresses, and custom schemas for development and testing
Gitignore Generator
Generate a custom .gitignore file for any tech stack, framework, or language.
License Text Generator
Generate MIT, Apache 2.0, GPL 3.0, or BSD 3-Clause license text for your open-source projects quickly and easily.
Noise Texture Generator
Generate procedural noise textures for backgrounds, materials, and design.
QR Code Generator
Generate QR codes from any URL or text
Random Decision Maker
Instant random decisions with custom lists, weighted options, Yes/No, and coin flips. Persistent history and fair weighted randomization.
SVG Blob Generator
Generate customizable, organic SVG blob shapes and vector backgrounds instantly for web UI design, landing pages, and visual graphics.
SVG Shape Generator
Generate highly customizable SVG blobs, waves, polygons, and stars instantly. Copy the raw markup or download the file.
Team Name Generator
Generate creative, funny, cool, and unique team names for sports, work, gaming, trivia, school, and events.
Text to ASCII Art Generator
Convert text to ASCII art block letters instantly with 10 fonts, custom fill and export
Text to Hashtags
Convert any text into optimized social media hashtags with smart filtering, multiple case formats, and platform-specific limits
Typography Scale Calculator
Generate a modular type scale from a base size and a chosen ratio for harmonious web and UI design.
Username Generator
Generate creative, unique username ideas from adjectives, nouns, and numbers
Zalgo Text Generator
Generate glitchy, corrupted, and creepy Unicode text styles or instantly strip Zalgo marks back into clean plaintext.
Body Fat Percentage Estimator
Estimate your body fat percentage using the US Navy method with just a tape measure. No calipers or special equipment needed.
Due Date Calculator
Calculate pregnancy due date from last period, conception date, or dating scan.
Heart Rate Zone Calculator
Calculate custom target heart rate training zones using Max HR, Karvonen HRR, or Joe Friel Lactate Threshold methods.
Macro Calculator
Calculate daily protein, carbohydrate, and fat targets based on your goals
Ovulation Calculator
Estimate ovulation window from cycle length
Sleep Cycle Calculator
Find optimal bedtime and wake time by 90-minute sleep cycles
Steps to Calories Calculator
Estimate calories burned from step count using MET-based science. Includes walking pace, stride length, weight, and instant comparison charts.
VO₂ Max Estimator – Free Online Calculator with 5 Methods
Estimate your VO₂ max using resting heart rate, Cooper test, Rockport walk, 1.5‑mile run, or step test. Instant rating and normative comparison.
Water Intake Calculator
Calculate your personalized daily water intake based on scientific research, considering age, weight, activity, and environmental factors.
Avatar Generator - Placeholder & Initials Avatar Maker
Generate beautiful placeholder avatars with initials, gradients, pixel, identicon and geometric styles in seconds
Color Picker From Image
Extract HEX, RGB, and HSL color codes from any image with pixel-perfect precision.
EXIF Viewer Online
View EXIF data from any photo instantly in your browser — see camera model, shutter speed, aperture, ISO, GPS location, and date taken. 100% private, no upload.
Favicon Generator
Generate multi-size favicons, Apple touch icons, and web manifests from any image instantly in your browser.
Free Online Image Resizer - Resize in KB, MB & Pixels
Resize images online for free. Compress and scale photos to exact KB, MB, or pixel dimensions without losing quality. 100% private and secure.
Image Border Generator
Add custom borders, frames, solid matting, drop shadows, and watermarks to your images online.
Image Collage Maker
Create beautiful image collages instantly in your browser with customizable layouts, padding, and backgrounds.
Image Compressor
Compress JPG, PNG, WebP and GIF images online — free, instant, and private. No uploads, no limits.
Image Converter — Convert PNG, JPG, WebP, AVIF & SVG
Convert images between PNG, JPG, WebP, AVIF, GIF, BMP and SVG right in your browser. Batch convert, set quality, resize and download — no upload, fully private.
Image Cropper
Crop and resize images with precision using custom dimensions and aspect ratio presets.
Image Dimension Checker
Check image dimensions, aspect ratio, megapixels, print sizes, and screen fit instantly in your browser.
Image Flip & Rotate Tool
Flip images horizontally or vertically and rotate by any angle instantly in your browser.
Image Grayscale Converter
Convert any image to grayscale directly in your browser with 7 algorithms, side-by-side preview, and instant download.
Image Grid Splitter
Split any image into equal grid tiles for Instagram puzzles, carousels, sprite sheets, and storyboards. Free, private, and fully browser-based.
Image Metadata Stripper
Remove EXIF, GPS, and hidden metadata from images privately in your browser
Image Noise Generator
Add film grain or noise effect to images
Image to ASCII Converter
Instantly convert any image into stunning text-based ASCII art with customizable characters and color modes.
Image to Emoji Art
Convert any photo into a colorful emoji mosaic right in your browser
JPG to PNG Converter — Free & Private
Convert JPG (JPEG) images to PNG in your browser. Get a lossless, edit-friendly PNG with no quality loss on further edits — no upload, fully private.
JPG to WebP Converter — Smaller Photos for the Web
Convert JPG (JPEG) to WebP in your browser for smaller files at the same visual quality. Adjustable quality, batch conversion, no uploads.
Pixelate Image - Free Online Image Pixelator Tool
Transform photos into pixel art with customizable block sizes and algorithms. 100% client-side, no uploads required.
Placeholder Image Generator
Generate custom placeholder images instantly — no uploads, no server, no sign-up.
PNG to JPG Converter — Free & Private
Convert PNG images to JPG (JPEG) in your browser. Control quality, flatten transparency onto any background colour, and batch convert — nothing is uploaded.
PNG to SVG Converter — Wrap Raster Images as SVG
Convert PNG images to SVG in your browser by embedding them in a scalable SVG container. Ideal for dropping raster art into SVG-only workflows. No uploads.
PNG to WebP Converter — Smaller, Web-Ready Images
Convert PNG to WebP in your browser to dramatically cut file size while keeping transparency. Adjustable quality, batch mode, zero uploads.
Round Image Corners
Add rounded corners to any image with precise control. Adjust individual corners, choose output format, and download instantly. 100% free, no upload required.
Screenshot Aspect Framer
Add device frame around any screenshot
SVG to PNG Converter — Rasterise Vectors in Your Browser
Convert SVG vector graphics to PNG raster images in your browser. Optionally set a max width to control resolution and flatten transparency. No uploads.
Transparent Background Checker
Check if an image has transparency, analyze alpha channels, and inspect opaque bounding boxes.
Watermark Image
Add text or image watermarks to your photos instantly in the browser
WebP to JPG Converter — Free & Private
Convert WebP images to JPG (JPEG) in your browser for maximum compatibility. Adjustable quality, transparency flattened onto a colour you pick, no uploads.
WebP to PNG Converter — Free & Private
Convert WebP images to PNG in your browser for maximum compatibility with editors and apps that don't read WebP. Lossless output, transparency kept, no upload.
Circle Calculator
Calculate circle radius, diameter, circumference, and area from any one known value. Instant results with adjustable precision.
Cube Root Calculator
Calculate cube root of any number
Decimal & Base Converter
Instantly convert numbers between decimal, binary, hexadecimal, octal, and any custom base from 2 to 36.
Factorial Calculator
Calculate exact factorials for non-negative integers with BigInt precision, digit count, and step-by-step breakdowns.
Fibonacci Sequence Generator
Generate Fibonacci sequence up to N terms with BigInt precision, multiple formats, and stats
GCD / HCF Calculator
Calculate the greatest common divisor (GCD) or highest common factor (HCF) of two or more numbers with step-by-step solutions
LCM Calculator
Find the least common multiple (LCM) of two or more numbers instantly with step-by-step breakdowns.
Logarithm Calculator
Instantly calculate the logarithm of a number to any base, including natural log (ln) and common log (log10).
Number Sequence Detector
Detect patterns in number sequences including arithmetic, geometric, Fibonacci, and more
Percentage of a Number Calculator
Calculate what X% of any number equals, instantly and accurately.
Power & Exponent Calculator
Calculate mathematical powers and modular exponentiation with step-by-step breakdowns.
Prime Factorization Calculator
Instantly break down any number into its prime factors, view exponential forms, and calculate total divisors.
Prime Number Checker
Check if a number is prime, find factors, list primes up to N, find nth prime, and generate primes in range
Quadratic Equation Solver
Solve ax² + bx + c = 0 for real roots
Random Number Generator
Generate random integers or highly precise decimal numbers with custom ranges, sequence batches, and duplicate restraints.
Square Root Calculator
Calculate square and nth roots of any number, with exact simplified radicals and decimal approximations.
Triangle Calculator
Calculate triangle sides, angles, area, perimeter, and altitudes using SSS, SAS, ASA, or SSA criteria with step-by-step mathematical proofs.
Audio Trimmer
Trim and export a section of an audio file
Audio Waveform Generator
Generate a visual waveform from an audio file
Speech to Text
Convert speech to text live in your browser — free, private, and instant. Just click the mic and start talking, no account needed.
Subtitle SRT Viewer
Preview, inspect, and validate .srt subtitle files online with a readable cue-by-cue timeline
Text to Speech Preview
Listen to any text read aloud in the browser — free, instant, no signup.
Video Metadata Viewer
View duration resolution and codec info of a video
Video Thumbnail Extractor
Capture high-quality snapshot frames from video files with custom cropping, image filters, and text overlays.
Daily Planner Generator
Instantly generate a time-blocked daily plan from your tasks — free, private, no account needed.
Dice Roller
Free online dice roller for d4 to d1000. Roll d20 with advantage, 4d6 drop lowest, exploding dice, modifiers, and live stats — no login, no install.
Flashcard App
Create and study flashcards locally with spaced repetition
Online Signature Pad
Draw, auto-crop, and export high-quality digital signatures in scalable SVG or transparent PNG formats.
Pomodoro Timer
Stay focused with a customizable Pomodoro timer that tracks sessions, tasks, and stats—no signup needed.
Reading Time Calculator Online — Instant Silent & Aloud Time Estimates
Calculate reading time for any text, article, or book instantly. Get silent, aloud, and session-based estimates with adjustable WPM for any content type.
Scratchpad Notes
A quick local notepad that saves as you type
Typing Speed Test
Measure your typing speed in words per minute (WPM), track your accuracy, and improve your keyboard skills.
Wheel Spinner
Spin a fully customizable random wheel to make decisions, pick names, run giveaways, or just have fun — 100% private, provably fair, and free.
Density Calculator
Calculate density, mass, or volume instantly with full unit conversion and material comparison
Frequency to Wavelength Converter
Convert frequency to wavelength and vice versa for electromagnetic and acoustic waves using precise velocity constants.
Kinematic Equations Solver
Solve SUVAT kinematic motion equations for displacement, velocity, acceleration, and time.
Molar Mass Calculator
Calculate the molar mass of any chemical compound from its formula. Supports parentheses, nested groups, and hydration notation.
Moon Phase Calculator
Calculate the current moon phase, illumination percentage, and upcoming lunar events for any date.
Ohm's Law Calculator
Calculate voltage, current, resistance, and power instantly. Enter any two known values to solve for the rest using standard equations.
pH Calculator
Calculate the pH, pOH, and ion concentrations of strong or weak acids, bases, and buffer solutions.
Pressure Calculator
Instantly calculate pressure, force, or area using the standard physics formula P = F/A with support for metric and imperial units.
Resistor Color Code Decoder
Decode 3, 4, 5, and 6 band resistor color values instantly.
Torque Calculator
Calculate the torque (moment of force) instantly using force, distance, and angle parameters.
API Key Generator
Generate cryptographically secure API keys, tokens, and secrets in your browser. Hex, Base62, Base64URL, UUID, custom charset, prefixes, and bulk export.
Bcrypt Hash Generator
Generate and inspect bcrypt password hashes locally in your browser.
CRC32 Generator
Instantly generate CRC32, CRC32C, BZIP2, MPEG-2 and other checksums for text, files, hex or Base64 – 100% client-side.
File Hash Checker
Compute MD5, SHA-1, SHA-256, SHA-384 and SHA-512 hashes of files or text entirely in your browser with no upload.
HMAC Generator
Generate and verify HMAC message authentication codes with SHA-256, SHA-512 and more. Secure API signing and data integrity tool.
Password Generator
A secure, client-side tool for generating strong, random passwords, memorable passphrases, and numeric PINs.
Password Strength Checker
Check entropy and strength score of a password
TOTP Generator
Generate secure time-based one-time passwords (TOTP) locally in your browser for enhanced 2FA security. Supports RFC 6238, custom algorithms, and URI imports.
Alt Text Checker
Scan pasted HTML for images missing alt attributes
Canonical Tag Generator
Generate accurate canonical link tags for any URL to optimize SEO and prevent duplicate content issues.
Free UTM Link Builder - Create Campaign URLs Instantly
Build UTM-tagged URLs with validation, linting, and parse existing links to edit parameters. No sign-up required.
Header Tag Analyzer
Check H1–H6 heading hierarchy from pasted HTML to find SEO and accessibility issues instantly.
Hreflang Tag Generator
Generate valid, reciprocal hreflang tags for multilingual and multi-regional websites
Keyword Density Analyzer
Analyze keyword frequency as a percentage
Meta Tag Generator
Generate SEO meta tags, Open Graph, and Twitter Cards instantly – free, no signup, 100% browser-based.
Robots.txt Generator
Free online robots.txt generator with AI crawler blocking, WordPress presets, sitemap support, and live preview. Create SEO-optimized robots.txt files instantly.
Schema Markup Generator
Generate valid JSON-LD structured data for common schema types to boost SEO and rich results.
SERP Snippet Preview
Preview and optimize meta titles, meta descriptions, and URLs for Google search results in real time.
Sitemap Generator
Generate XML, TXT, and CSV sitemaps from URL lists with customizable priority, changefreq, and lastmod metadata for SEO
Slug SEO Analyzer
Analyze URL slugs for length, keywords, stop words, and readability with an instant SEO score.
URL Builder
Build, deconstruct, and customize trackable URLs with interactive UTM parameter presets and encoding controls.
URL Slug Generator – Free SEO-Friendly Slug Maker Online
Create clean, SEO-friendly URL slugs instantly from any title. Bulk mode, transliteration, stop-word removal, and smart length control — 100% client-side.
Anagram Checker
Check if two strings are anagrams with customizable normalization options.
Case Converter
Convert text to various cases like uppercase, lowercase, title case, camelCase, snake_case, and more, with additional text cleaning features.
Find & Replace Tool
Find and replace text instantly online with regex, whole word, case matching, preserve case, and batch rules. 100% client-side.
Free Word Counter Online – Count Words, Characters & More Instantly
A fast, free word counter tool that counts words, characters, sentences, and paragraphs in real time. Includes reading time, keyword density, and optional word goal tracking.
HTML Tag Stripper
Remove HTML tags, decode entities, and convert markup into clean plain text instantly in your browser.
Letter Frequency Analyzer - Character Frequency Counter
Analyze letter and character frequency distribution, entropy, and patterns in any text instantly.
Line Counter
Count lines in text with advanced statistics including blanks, duplicates, words, characters, paragraphs, and line lengths. Includes tools to remove empty or duplicate lines.
Line Sorter
Sort, clean, and organize text lines instantly in your browser.
Online Text Reverser
Reverse entire text, word orders, or letter-sequences instantly with proper emoji and line break preservation.
Palindrome Checker
Check if a word or phrase reads the same backwards instantly
Prompt Formatter
Instantly format, enhance, and structure AI prompts with best practices for better LLM results.
Prompt Word Counter & Token Estimator
Analyze your LLM prompts to count words, estimate tokens, predict API costs, and extract structural variables.
Random Text Generator
Generate Lorem Ipsum, English, or gibberish placeholder text by words, sentences, or paragraphs — copy instantly.
Remove Duplicate Lines
Instantly remove duplicate lines from text online — keep first, keep last, or keep only unique lines with case, trim, sort and privacy-first processing.
Repeated Words Finder
Instantly highlight and list duplicate words in your text to improve readability, fix typos, and optimize SEO.
Sentence Counter
Instantly count sentences, paragraphs, words, and characters in any text. Free online sentence counter with real-time analysis.
Syllable Counter
Count syllables in words, sentences, and haiku in real time.
Text Cleaner
Free online text cleaner to remove extra spaces, line breaks, HTML tags, duplicate lines, and invisible characters from any text.
Text Difference Checker
Compare two texts instantly with accurate Myers diff highlighting. Side-by-side view, unified diff, similarity score, and multiple comparison modes.
Text Shuffle
Randomly shuffle words or lines in text
Truncate Text
Trim text to a character, word, line, sentence, or byte limit instantly.
Unicode Converter
Convert text to fancy Unicode styles, view code points, escapes, normalization, and UTF-8 bytes instantly.
Upside Down Text
Flip text characters upside down with Unicode
Vowel / Consonant Counter
Count vowels and consonants separately in text with detailed frequency analysis, syllable estimation, and Unicode support
Whitespace Remover
Strip, trim, and collapse whitespace in text — remove extra spaces, blank lines, line breaks, and convert tabs to spaces, all in your browser.
Word Wrap Tool
Wrap text to a fixed line width instantly with word, balanced, and character modes
Binary Search Visualizer
Visualize binary search algorithm step by step
Recursion Tree Visualizer
Visualize recursive call trees step by step
Regex Visualizer — Railroad Diagram Generator for Regular Expressions
Free online regex visualizer that renders any JavaScript regular expression as an interactive railroad diagram, with a plain-English breakdown, live match tester, and ReDoS warnings — all in your browser.
Shape Drawer
Create and edit geometric shapes with precise measurements, live calculations, and export to SVG, CSS, or HTML
Sorting Algorithm Visualizer
Animate bubble merge and quicksort algorithms
Word Frequency Cloud
Generate a word cloud from text frequency — analyze word counts, visualize patterns, filter stop words, detect n-grams, and export results as CSV, JSON, or SVG.