Convert images without uploading them anywhere
Drop in a folder of images, pick a format, and download the results. Everything runs inside your browser, so nothing is sent to a server and nothing is stored.
- No upload
- No sign-up
- No watermark
- Unlimited files
- 100% local processingRuns in your browser. Files never leave your device.
- No uploads, no queueInstant results, even on large batches.
- No watermarksClean output, yours to use anywhere.
- Blazing fastModern browsers and the Canvas API make it quick.
How to convert an image
Drag your images onto the drop zone, or click to browse. You can select a whole folder at once.
Choose an output format. WebP for the web, PNG when you need transparency or lossless, JPEG for maximum compatibility.
Set quality, and optionally a target width or height, rotation and a watermark.
Click Convert, then download files individually or grab the whole batch as a ZIP.
Why it runs in your browser
- FastRuns locally at the speed of your own device.
- 100% privateYour files never leave your device. Ever.
- No limitsNo file size caps and no daily quota.
- LighterNo round trip means less data moved for the same result.
What you should know
Most online converters work the same way: you upload your files, a server processes them, and you download the result. That means your images sit on somebody else’s machine, you queue behind everyone else, and there is usually a cap on file size or batch count. This one does the work in the browser tab you already have open. Your files never leave the device.
The practical upshot is speed. There is no upload, no queue and no download of the original in the other direction, so a batch of forty images finishes in the time a conventional converter would still be uploading. It also means the tool keeps working on a slow connection, and there is no file-size ceiling beyond what your own machine can hold in memory.
Format choice matters more than most people assume. WebP is typically 25 to 35 percent smaller than an equivalent JPEG at the same visual quality and, unlike JPEG, it supports transparency. PNG stays lossless, which is what you want for logos, screenshots and anything with text or hard edges. JPEG is still the safest option when a file has to open in old software. Pick per job rather than picking one and using it everywhere.
Questions people ask
Are my images uploaded to a server?
No. The conversion runs entirely in your browser using the Canvas API. Your images are read from disk into the page and never sent over the network, which you can verify in your browser’s network tab.
Is there a file size or batch limit?
There is no limit imposed by the tool. The practical ceiling is your device’s memory. Very large batches of very large images are best done in groups of twenty or so.
Does converting remove EXIF data?
Yes, as a side effect of how the conversion works. The image is decoded to pixels and re-encoded, so camera model, timestamps and GPS coordinates are not carried over to the output file.
Which format should I use for a website?
WebP for photographs and most images, since it is smaller than JPEG at matching quality and is supported by every current browser. Keep PNG for logos, icons and screenshots where lossless edges matter.
Does it add a watermark?
Only if you ask it to. There is an optional watermark field you can fill in. Leave it blank and the output is clean.
Images are one line item
Compressing them is the cheap half of page speed. If the rest of the site is still slow, or the traffic is not converting once it arrives, that is the part we actually get paid for.
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