BMP to PNG Details
When something needs PNG instead of BMP, BMP to PNG keeps every step on one screen: upload, queue, convert, download.
BMP stores pixels as they are, with no practical compression standing in the way. PNG is a lossless raster format with a real alpha channel, so repeated saves never degrade the picture.
Step by step
Three moves make up the whole flow: drop the file, convert, download. The detail is below.
- Add the BMP files you want converted by dragging them in or clicking to browse.
- The queue takes up to 20 files at once, and anything added by mistake can be removed from the list.
- The convert button rewrites the selected file as PNG; the batch button repeats that for every BMP file in the queue.
- Rename the output in the queue field before downloading; the extension is set to PNG for you.
- Downloading is the last step: the PNG file goes to your browser folder and no copy stays on the server.
Formats, limits and behaviour
The limits match what the interface shows, and the processing behaves like this:
- Accepted input: BMP (bmp), up to 24 MB per file.
- The result is written as PNG and written losslessly, so there is no quality value to pick.
- The queue carries 20 files at a time, and each file travels in its own request.
- BMP files have no transparency to begin with, so the PNG result is opaque; an alpha channel is never invented.
- Do not count on metadata surviving: whether EXIF and ICC data travel depends on the engine handling the file, so keep anything critical elsewhere.
Picking the right tool
This conversion earns its place when an existing BMP file has to land somewhere that asks for PNG. Logos, screenshots, interface assets and anything that needs a transparent background belong in PNG. It stays crisp on text and hard edges, while photographs end up heavier than their JPG or WebP versions. BMP stores pixels as they are, with no practical compression standing in the way.
PNG is not the answer if you only want a lighter file; use the Image Compressor to shrink an image without changing its format (quality 20 to 95).
Practical notes
- Add every BMP file from the same folder in one go; up to 20 of them finish in a single round.
- Renaming outputs in the queue keeps your downloads folder readable once several PNG files land there.
- PNG is written losslessly, so saving again does no damage and the file works as an archive copy.
- Test one file, judge the result, then send the rest of the BMP files through in a batch.
Where your data is processed
Processing an image means uploading it, and that upload lives only as long as the request. Once the output exists, the file is not stored and never handed to a third party. Ads may appear on the page, but no ad network can reach your upload.