Free Image Compressor
Compress JPG, PNG and WebP images online, free — securely in your browser, nothing is uploaded anywhere.
Drag & drop a JPG, PNG or WebP image here, or
How it works
- Pick an image — drag and drop it or browse from your device. It is opened directly in your browser, not uploaded.
- Choose quality & size — set a quality level and, optionally, cap the longest edge to shrink large photos further.
- Compressed on your device — the image is re-encoded locally in a background worker, then you download the smaller result. Your original file is never modified.
Private by design
Most online image compressors upload your photos to their servers. Ours doesn’t — the entire engine runs inside your browser, so personal photos, screenshots and scanned documents never leave your machine. This is enforced by a Content-Security-Policy that blocks the page from talking to any third-party server, and it means the tool keeps working even if you go offline after the page loads. Read more in our privacy policy.
Frequently asked questions
Is this image compressor really free?
Yes — completely free, with no sign-up, no watermarks and no daily limits. Because compression runs on your own device, it costs us almost nothing to offer, so there is no catch.
Are my images uploaded to a server?
No. The compressor runs entirely in your browser. Your image is read and re-encoded in your browser's memory and is never transmitted anywhere. Our pages ship a Content-Security-Policy that makes the browser block network requests to other origins, so this is enforced technically, not just promised.
How much smaller will my image get?
It depends on the image and settings. Lowering the quality of a JPG or WebP photo often shrinks it by 40–80%. The single biggest lever is resizing — scaling a large photo's longest edge down to 1920 px or 1280 px can dramatically reduce the file size.
Which formats can I compress?
JPG, PNG and WebP. You can keep the original format or convert while compressing — for example, exporting a large PNG as WebP or JPG usually produces a much smaller file.
Will compressing reduce image quality?
JPG and WebP are lossy, so lower quality settings trade some visual detail for a smaller file — 70–85% is usually indistinguishable for photos. PNG is lossless, so its pixels are preserved exactly.
Is my original file changed or kept anywhere?
Your original file is untouched — you download a new, compressed copy. Nothing is retained after you close or reload the page.