BriskFile

Convert BMP to PNG

Drop your BMP files below. They are converted on your own device and never sent anywhere.

Convert to PNG whenever you have a BMP. It is the same image in a far smaller file that opens in more places. It is converted by your own browser here, so the file is never uploaded.

Nothing is uploaded. Your files are read by this page and processed by your own processor. Open the Network tab and watch — you will not see them leave.

BMP and PNG, and why you would move between them

BMP is Windows' original bitmap format, and its defining characteristic is that it barely compresses at all. Every pixel is stored more or less literally, which makes a BMP roughly four bytes per pixel regardless of what the image contains — a 1920 × 1080 screenshot is about 8MB as a BMP and often under 200KB as a PNG.

Converting to PNG is one of the few conversions that is pure gain. PNG is lossless, so the image is unchanged pixel for pixel, and it is compressed, so the file becomes dramatically smaller. There is no quality trade-off to weigh; the only reason to keep a BMP is software old enough to require one.

Things that catch people out

  • The size reduction is often 90% or more, and is largest on screenshots and graphics with flat colour. This is compression working, not detail being discarded.
  • BMP files can carry an alpha channel but frequently do not, and some write it incorrectly. If the transparency looks wrong after conversion, it was most likely wrong in the source.
  • Very old BMPs may use 8-bit palettes or RLE compression. These convert correctly but the colour limit is a property of the source: PNG cannot restore colours the BMP never stored.
  • BMP has no metadata worth speaking of, so nothing is lost on that front — there is no EXIF, rotation flag or colour profile to carry across.

Related conversions

Questions

Is there any reason to keep a BMP?

Almost none. Some embedded systems, older industrial software and a few Windows APIs still expect BMP. For everything else PNG is the same image, losslessly, in a fraction of the space.

Does converting BMP to PNG lose quality?

No. PNG compression is lossless, so the result is pixel-for-pixel identical to the BMP. Only the file size changes.

What BriskFile will not do to you

  • Your files never leave your device

    Every conversion runs in your browser. Open DevTools, watch the Network tab, and you will see no upload — because there is not one.

  • No account, no email, no watermark

    Nothing to sign up for and nothing stamped on your images. There is no step between choosing a file and getting it back.

  • No limits at the download button

    No daily cap, no file counter, no "upgrade to download". If the tool starts a job, it finishes it.

  • Checkable, not just claimed

    Open the Network tab and convert something — nothing goes out. Or load the page, disconnect, and watch it keep working: the tool is already on your machine, and your file never leaves it.