Image Compressor
Compress images by quality and size with a size comparison.
🗜Image Compressor
All processing happens locallyOriginal
Compressed
What this tool does
Image Compressor is a browser based image compressor, images are processed on a local canvas and never uploaded, so both the original and the result stay on your device.
Pick a local image, process it on the page and download the result; JPG, PNG and WebP are supported.
How to use it
- Paste or type your content into the input field at the top, or press the sample button to load demo data.
- Adjust the options below the input, such as output format, separators, letter case or precision.
- Press the main button to run the conversion. Results appear instantly in the output panel without a page reload.
- When the result looks right, use the copy button in the corner, or download it as a local file.
Tips and notes
Clean up stray spaces and line breaks before pasting for more accurate results.
FAQ
No. Scaling keeps the aspect ratio, and with the lock enabled width and height update together.
Around 100 KB or less for web images and under 30 KB for avatars and thumbnails, depending on display size.
PNG is lossless, so gains come mostly from smaller dimensions; for photos convert to JPG first.
Yes. The tool is completely free with no usage limits, and you never need an account or a sign-in.
No. All processing runs locally in your browser, so the input never reaches a server and is never logged or stored.
Yes. The layout is mobile-first, so inputs and buttons stay comfortable on phones and tablets in both orientations.
Yes. A copy button in the output panel puts the result on your clipboard, and you can also download it as a text file.