Image converters · OnDevice
Compress a photo or scan to 500 KB without uploading
Use the 500 KB preset when the picture has to stay readable — a page of notes, a signed form you photographed, or a listing photo — but the upload still rejects larger files.
No upload. Files never leave your device.
Drop images here
JPEG, PNG, WebP, AVIF, GIF, BMP, and TIFF are welcome. Multiple files are fine. Output is always JPEG so the size cap can be met.
Results
No files yet. Nothing is sent to a server when you add them.
When you need the page or the product to stay readable
Half a megabyte leaves more room for type and fine lines than a 50 or 100 KB portrait cap. If you are photographing a document, fill the frame with the page, use even light, and then compress here so you are not spending the budget on table edges.
The tool may still resize a very large phone image. For a scan that must stay typographically sharp, try a modest crop first. This is not a PDF compressor; it writes a JPEG, and the work stays in your browser.
Frequently asked questions
Does this upload my file?
No. Compression runs in a Web Worker on your device. Nothing is sent to a conversion server.
Can I use this on a photo of a document?
Yes. Crop to the page, then compress. 500 KB usually keeps handwriting and printed type more readable than a much smaller cap. Photograph in even light so compression is not fighting glare or a busy background.
Is this a PDF compressor?
No. The output is always a JPEG image. If you have a PDF, export or snapshot the page first, or use a PDF tool when that catalog is available.
Will a large phone photo be resized?
Only if a reasonably high-quality JPEG still exceeds 500 KB. Many slightly edited photos fit at 500 KB with a quality change alone.
Can I compress many files at once?
Yes. Add a batch of photos or page shots, compress, then download a ZIP.