How much can I compress an image?

The amount of compression depends on the image content and format. For JPEG and WebP, lower quality settings produce smaller files. A quality setting of 60–80% typically reduces file size by 40–80% with minimal visual loss. PNG compression is limited since PNG is already a lossless format.

What's the difference between JPEG and WebP compression?

WebP generally provides 25–35% better compression than JPEG at the same visual quality level. For web use, WebP is recommended. JPEG is more universally supported. PNG is best when you need lossless quality, but file sizes will be larger.

Does compression reduce image dimensions?

No. This tool only adjusts the compression quality, not the image dimensions. The output image has the same width and height as the original. Use the Image Resizer tool if you need to change dimensions.

Is there a limit on file size?

Since all processing happens in your browser, the practical limit depends on your device's available memory. Most images under 50MB work fine. Very large images (100MB+) may cause performance issues on lower-end devices.

Is my image uploaded to a server?

No. All image compression happens entirely in your browser using the HTML5 Canvas API. Your image is never uploaded, stored, or transmitted anywhere.

Tools

Click to upload or drag & drop an image

Supports JPG, PNG, WebP

Image Compressor — Compress JPG, PNG, WebP Online

Free online image compressor tool. Reduce image file sizes by adjusting quality with a live preview. Compare original vs compressed side by side with file size savings displayed in real time. Supports JPG, PNG, and WebP output formats. All compression happens locally in your browser — no uploads to any server.

Features

✓Compress JPG, PNG, and WebP images with adjustable quality slider
✓Live side-by-side preview — compare original vs compressed image
✓Real-time file size comparison showing exact savings
✓Supports JPG, PNG, and WebP output formats
✓Adjustable quality from 10% to 100%
✓Original image info display: dimensions, file size, and format
✓Download compressed result with one click
✓Drag-and-drop file upload or click to browse
✓All compression happens in your browser — no server uploads
✓100% free with no file size limits

How to Use

1Upload an image by clicking the upload area or dragging and dropping a file.
2Adjust the quality slider to find the perfect balance between file size and visual quality.
3Compare the original and compressed images side by side.
4Check the file size savings displayed below the comparison.
5Click 'Download' to save the compressed image.

Frequently Asked Questions

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