Compress your images —
without uploading a thing.

Frequently asked questions

Are my images uploaded to a server?

No. Every image is compressed locally in your browser; nothing is uploaded. Once the page has loaded you can go offline and it still works. You can confirm it yourself by opening your browser's Network tab — no image data leaves the page while you compress.

Will compressing lose image quality?

You control the trade-off with the quality slider. JPG and WebP are lossy, so lower settings give smaller files with more visible loss; around 80% is usually indistinguishable from the original for photos. You always see the result and the exact size saved before downloading, so you can dial it in.

Which formats can I compress?

JPG/JPEG, PNG, and WebP. For photos saved as PNG, converting them to JPG or WebP usually saves the most, because PNG is a lossless format meant for graphics and screenshots rather than photographs. The tool shows the size saved so you can compare.

Is there a limit on file size or number of images?

You can compress a batch at once, with no account or paywall gating it. Very large files are capped only to keep your browser tab from running out of memory — the vast majority of photos are well under that limit.

How is this different from the big compression sites?

Most popular compression sites upload your images to their servers, compress them there, and send them back. This tool does the whole job inside your browser, so your images never leave your device. That also means no upload wait, no file-count paywall, no watermark, and no ads over the tool.

Does it work on phones and offline?

Yes. It runs in any modern browser on Windows, macOS, Linux, Android, and iOS, and keeps working offline once the page has loaded. There's nothing to install and no account to create.