Image Compressor
Shrink JPG, PNG and WebP files in your browser — images never leave your device.
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How to use it
- Choose your image — it is processed locally and never uploaded (limit 10 MB).
- Adjust the quality slider and optionally set a max width to shrink large photos first.
- Compare original and compressed sizes side by side; re-run with different quality values.
- Download the WebP result — usually 50–80% smaller than the source at visually identical quality.
About this tool
Compresses images with the Canvas API using a quality slider and optional max-dimension resize, showing original and compressed sizes side by side before download. Because processing is local, confidential screenshots and photos can be optimized without uploading them anywhere.
Your input never leaves the browser: this tool works entirely offline once the page has loaded.
Frequently asked questions
How much smaller will my image get?
It depends on the source. Photos typically shrink 50–80% as WebP; graphics that were already efficient PNGs may not shrink at all — the tool tells you honestly when compression did not help.
Is my photo uploaded anywhere?
No. Compression runs in your browser with the Canvas API; the file never leaves your device.