Does my file get uploaded?

No. The page reads the file through the browser's own file API and processes it in the tab. Closing the tab discards the working copy, which is why there is no storage to clear and no retention policy to read.

Will it work on a phone?

Yes. The layout adapts to a small screen and the processing runs in the mobile browser, so a photo or a downloaded document can be handled on the device it arrived on.

Will I notice a quality difference?

Re-encoding always costs something, so start at the lighter setting and only push further if the size is still wrong. The before-and-after figures on the page are the honest way to decide.

Because the expensive part — the server farm — does not exist. Processing runs on your device, so the site can stay free without a signup wall in front of it or an upsell in the middle of a job.

Bulk Image Converter

Convert up to 50 images to JPG, PNG or WEBP at once and download a ZIP.

Drag & drop images here

HEIC, TIFF, SVG and GIF decode through built-in browser/WASM codecs

Add at least one image.

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About Bulk Image Converter

The job of Bulk Image Converter is narrow on purpose: convert up to 50 images to JPG, PNG or WEBP at once and download a ZIP. It takes JPG, JPEG, PNG and 9 more and produces JPG, PNG, WEBP. Files up to 100 MB each, 50 at a time, and the work happens on your own machine rather than on a server.

Useful when the job is moving an image between formats and you would rather not install software, join a queue or hand the file to a stranger.

How to use Bulk Image Converter in 3 steps

Drop the image onto the drop area, or several at once up to 50 files.
Set the Output format, and Quality for the lossy ones.
Press Convert and download the result in whichever of JPG, PNG, WEBP suits you.

What you get with Bulk Image Converter

Accepts JPG, JPEG, PNG and 9 more in one go
Output in JPG, PNG, WEBP
Batch up to 50 files, returned together
Runs in your browser — the file is never uploaded
Free to use, with no signup and no account
No watermark or logo added to your output
Works on desktop and mobile, no install

Bulk Image Converter: questions

Does my file get uploaded?: No. The page reads the file through the browser's own file API and processes it in the tab. Closing the tab discards the working copy, which is why there is no storage to clear and no retention policy to read.
Will it work on a phone?: Yes. The layout adapts to a small screen and the processing runs in the mobile browser, so a photo or a downloaded document can be handled on the device it arrived on.
Will I notice a quality difference?: Re-encoding always costs something, so start at the lighter setting and only push further if the size is still wrong. The before-and-after figures on the page are the honest way to decide.
Why is it free?: Because the expensive part — the server farm — does not exist. Processing runs on your device, so the site can stay free without a signup wall in front of it or an upsell in the middle of a job.