Image Compressor

Yes, completely free with no hidden limits. There is no file size cap, no daily quota, and no account required. The tool runs entirely in your browser, so there are no server costs to pass on.

No. Every image is processed locally using your browser's built-in Canvas API. Your files never leave your device. This makes the tool faster than server-based compressors and means your photos stay completely private.

You can compress JPG/JPEG, PNG, WebP, GIF, and BMP files. You can also convert between formats — for example, upload a PNG and download a WebP — using the Output Format setting.

Lossy compression permanently removes image data that the human eye is unlikely to notice, achieving the smallest possible file sizes — typically 60–90% reduction. Lossless compression strips metadata, colour profiles, and redundant encoding without changing any pixel, so the result is a bit-perfect copy of the original at a slightly smaller size.

It depends on the image content and settings. Typical results:

• JPEG at 80% quality: 50–75% smaller than the original
• PNG → WebP (lossy): 70–90% smaller
• Lossless PNG: 20–40% smaller by removing metadata and redundancy Photographs compress more than graphics or screenshots because they contain complex colour gradients that compression algorithms handle efficiently.

A quality value between 75 and 85 is the standard recommendation for most web images. At this range the difference is invisible to the human eye at normal viewing sizes, while file sizes drop by 60–80%. For hero images or product photos where sharpness matters, try 85. For thumbnails or background images, 70 is fine.

• WebP is the best choice for modern websites — it produces files 25–35% smaller than JPEG at the same visual quality and supports transparency like PNG. All modern browsers support it.
• JPEG is best for photographs when broad compatibility matters (older email clients, legacy software).
• PNG is best for logos, icons, and screenshots with sharp edges or transparency where lossless quality is required.

Yes. Drop as many images as you like onto the upload zone and click Compress once to process them all. Each file is shown with its individual before/after stats and its own download link. Use Download All to save everything in one click.

Yes. The Resize Max Width setting scales images proportionally to a maximum width you choose. Presets include common sizes like Full HD (1920 px), HD (1280 px), Web (800 px), and Thumbnail (400 px). The original aspect ratio is always preserved.

This can happen when compressing a PNG to another PNG at high quality settings, or when the original file was already heavily compressed. In these cases the tool will show "No change" and the original file is effectively the best version. Try switching to WebP format or lowering the quality slider for a real reduction.

Yes, positively. Page speed is a confirmed Google ranking factor. Images are typically 50–70% of a page's total weight, so compressing them reduces load time, improves Core Web Vitals scores (particularly LCP — Largest Contentful Paint), and lowers bounce rates. WebP images also signal modern web practices to search engine crawlers.

Yes — this is a feature most tools lack. After compressing, click Re-compress with new settings, adjust the quality, format, or resize options, and click Compress again. Your images stay loaded in the tool and reprocess immediately.