Free · No signup · Runs in your browser
Compress and convert images without uploading them anywhere
Drop a JPG, PNG, or WebP below. Litebox shrinks the file size right on your device — nothing is sent to a server, so it works offline and there's nothing for anyone to store.
Image compressor tool
How it works
Litebox uses your browser's built-in image-decoding and canvas rendering to re-encode each file at a lower quality setting, which reduces file size while keeping the image visually close to the original. Because this happens with code that already ships in every modern browser, there's no server doing the work — and no server bill to pass on to you as a fee.
Choose your files
Drag images into the box above, or click to browse. Select as many as you need — there's no daily limit.
Set quality and format
Slide the quality control to balance file size against sharpness, and optionally convert to JPG, PNG, or WebP.
Download instantly
Each compressed file downloads straight to your device. Nothing is stored or logged — close the tab whenever you're done.
Frequently asked questions
Is Litebox really free to use?
Yes. There are no daily task limits, no file-size caps beyond what your browser can handle, and no paid tier. It's free because the compression runs on your device instead of a server, so there's no per-file cost to cover.
Do my images get uploaded to a server?
No. Litebox reads and re-encodes each image locally using the Canvas API built into your browser. Files are never transmitted over the network, so this even works with your Wi-Fi turned off after the page has loaded.
What image formats does Litebox support?
Litebox reads JPG, PNG, and WebP, and can export to any of those three regardless of the input format — so you can convert PNG to WebP, JPG to PNG, or simply compress a file while keeping its original format.
Is there a limit on file size or number of images?
There's no artificial limit set by Litebox. The practical ceiling is your own device's available memory, since everything runs on your hardware rather than a remote server.
Does Litebox add a watermark?
No. Output files are identical to the input in every way except file size and, if you choose to convert, format. No watermark, no added metadata, no branding.