Convert and resize images without uploading them
Screenshots contain more than you think: open tabs, filenames, Slack messages, internal URLs. Running them through an image converter that uploads is a quiet way to leak all of it.
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Every one of these runs entirely in your browser.
About this page
Screenshots are the risky case
Everyone thinks about photos when they think about image privacy, and photos do carry GPS coordinates and camera serial numbers in their EXIF data. But the more common exposure is the work screenshot: the one that needs resizing before it goes in a document, and that happens to include a customer name in a sidebar or a staging URL in the address bar.
That image goes to a converter, sits in a temp directory somewhere, and is retained for as long as that company's cleanup job says. There is no reason for it to have left your laptop.
Canvas does all of this natively
The tools are ordinary web pages. When you pick a file, the browser hands your code a reference to it and the work happens in JavaScript and WebAssembly on your own machine. There is no server component to send it to, which is why there is no upload progress bar and no queue.
For images the browser already has everything required: decoding, scaling with proper resampling, cropping, and re-encoding to PNG, JPEG or WebP with a quality setting. A server adds nothing to the result. It is simply how these sites were built before browsers could do it, and how they stayed built because the upload is what makes the ad-funded business model work.
Frequently asked questions
Does this strip EXIF and location data?
Re-encoding through the canvas drops the original metadata as a side effect, so a converted or resized image will not carry the GPS coordinates or camera details the original had. If stripping metadata is the actual goal rather than a side benefit, convert the image and use the output.
Which formats are supported?
PNG, JPEG and WebP for both input and output, plus anything else your browser can decode on the input side. AVIF support depends on your browser version rather than on us.
Is the quality as good as a desktop app?
For resizing, compression and format conversion, yes. The browser's image pipeline is the same one that renders every image you see. Colour-managed professional work with ICC profiles is the case where a real image editor still wins.