Compress image without quality loss
Make JPG, PNG, WebP or HEIC files smaller. Adjust the quality slider and download instantly. No upload — everything in your browser.
Choose images (JPG, PNG, WebP, HEIC…)
Drop here or click to choose
Files stay on your device — nothing is uploaded
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Your file is processed in your browser and never uploaded.
How does it work?
- 1
Choose your images
Drag JPG, PNG, WebP or other images here.
- 2
Set the quality
75% is a good balance; lower = smaller file.
- 3
Download
One file downloads directly, multiple as a ZIP.
Frequently asked questions
How much smaller will the files get?
It depends on the source file. A 4 MB JPG typically becomes 400–800 KB at 75% quality.
Does this work for PNG?
PNG files are lossless and are optimised without re-encoding as lossy.
Are my files uploaded?
No. Everything happens in your own browser. Your file never leaves your device and is not stored anywhere.
Is it free?
Yes, completely free, without watermark or account. The site is paid for by ads.
More reading
Why in the browser?
PDFrust runs entirely in your browser using WebAssembly and modern JavaScript libraries such as pdf-lib and PDF.js. Your file is never sent to a server — all processing happens locally on your device. This means your documents remain private by design, regardless of what they contain. There is no account required, no file size limit, and nothing is stored after you close the tab.
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