BMP -> WEBP · Local tool
BMP to WebP
Turn uncompressed BMP files into WebP, sized for a web page.
Last updated
01 / Your device
the file stays here
02 / Browser memory
the work runs locally
03 / Back to you
saved on this device
When you would use this
Situations, not settings.
- A bitmap headed for a web page
- Two problems at once: nothing serves BMP, and the file is far too heavy. One pass fixes both.
- Screen captures going into documentation
- A docs site full of raw bitmaps loads slowly. The same screenshots as WebP are a fraction of the weight.
- A build pipeline that expects modern formats
- Asset tooling often refuses BMP outright rather than converting it. Handing it WebP skips the argument.
How it works / no cloud
A conversion engine, not an upload form.
Your browser decodes BMP and encodes WebP, so filetity reads the bitmap, redraws it and writes WebP at the quality you choose. Nothing is uploaded and no extra engine is downloaded, because both codecs are already in the browser.
- Offline ready
- Installable app
- No file limit queue
Straight answers
No accordion. Nothing hidden.
- Is it free?
- Yes, with no watermark and no page limit.
- Does it need an account?
- No. There is no account system.
- Is my file processed on my device?
- Yes. The file is read by your browser and never uploaded. There is no server to send it to.
- What formats are supported?
- BMP in. WebP out, one file per image, or a ZIP when you convert several.
- What are the limits?
- No image count limit. WebP is lossy at the default quality, so this is the picture's first lossy pass. Older desktop software and print counters still refuse WebP, so check where the file is going.
- Does it work on mobile?
- Yes, on any modern mobile browser. Large files are limited by the memory the phone gives the browser.
- Does it work offline?
- Yes, once the page has loaded. The tool keeps working with no network connection.
- Why go to WebP rather than JPG?
- Because WebP holds transparency and packs the same picture tighter at a matching quality. If the file is going on a web page, WebP is the better target. If it is going to a print counter or an old program, JPG is the safer one.
- Is this reversible?
- No. WebP is lossy at the default quality, so detail the BMP stored exactly is thrown away to get the size down. Keep the BMP if you might need to edit the picture again later.
- What size difference should I expect?
- A large one. A BMP is not compressed at all, and WebP is among the better compressors available inside a browser, so the two are not close. The measured figure is shown before you download.
- Can I go straight from a screenshot to WebP?
- Yes. Windows screen capture and older scanner software still write BMP, and one pass turns that straight into something a page can serve.
Keep working locally
4 available · more coming