A free image resizer and converter that does the work in your browser instead of on someone else's server.
We needed to prep product photos in bulk and found the free options genuinely bad — file caps, watermarks, adverts stacked three deep, and every one of them wanting the images uploaded first. So we built an internal tool. This is that tool, cleaned up and made public.
Your browser can already decode, resize and re-encode images. This page just asks it to. Your files are read from disk, processed in memory and handed straight back to you. There is no server in the middle, which is why there is no upload, no account, no file limit and no cost.
The exceptions are HEIC and PDF. Browsers cannot read HEIC at all, and cannot turn a PDF page into an image on their own, so a decoder is downloaded the first time you drop one of those. Both still run on your machine, and your files still never leave it.
In: JPG, PNG, WebP, GIF, BMP, SVG, AVIF, HEIC and PDF. Out: JPG, PNG, WebP and PDF. Every pairing works in both directions — there is no combination we refuse. The format is detected from the file's own bytes, so a PNG someone renamed to .jpg is still read correctly.
The one thing missing is HEIC output, and it is missing for a reason rather than an oversight: no browser ships a HEIC encoder, so the only way to offer it would be to upload your file to a server and encode it there. That would break the single promise this site is built on, so we do not offer it.
Being straight about the gaps:
Quantum Armadillo, LLC. We also build CADdillo, a free DWG to PDF converter and browser CAD editor, on the same principle: the file should stay with the person who owns it.
An image that converts badly is the most useful thing you can report. Email [email protected].
