What this tool does
Compresses JPG, PNG, and WEBP images by reducing encoding quality. Typical reduction: 50–80% without visible degradation.
Image tool
Image Compressor
Compress JPG, PNG, and WEBP images without visible quality loss. Reduce file sizes by 50–80% in your browser — nothing is uploaded.
Complete guide
How to use Image Compressor
Image tools guide for image compressor users.
Large image files slow down websites, clog email inboxes, and use excess storage. This tool compresses images by optimising the encoding quality level — visually the image looks identical but the file is significantly smaller.
All compression runs in your browser using the Canvas API. For more format-specific options, use the dedicated JPG Compress, PNG Compress, or WEBP Compress tools.
How to use it
Upload an image. Set the quality slider (80 is a good starting point for photos). Download the compressed file.
Format notes
JPG and WEBP: quality slider directly controls compression. PNG: compression is lossless — reducing 'quality' trades CPU time for file size.
Quick checklist
- For photos: quality 75–85 is visually identical to the original at half the size.
- For PNG: compression is lossless — no quality is lost regardless of the slider.
- Batch compress by uploading multiple files at once.
- Check the before/after file size display — stop if the saving is small.
Answers
Image Compressor FAQs
Will the compressed image look different?
At quality 80+, the difference is imperceptible to the human eye for photographs. For graphics with sharp edges or text, stick to 85+ or use PNG.
Is there a file size limit?
No server limit — all processing is in your browser. Files over 20MB may be slow on older devices.
Does this upload my images?
No. Compression runs on the Canvas API in your browser. Your images never leave your device.
Which format gives the smallest file?
WEBP is typically 25–35% smaller than JPG at the same quality. Use WEBP when the target platform supports it (all modern browsers do).