Convert BMP to PNG Live
Convert BMP to lossless PNG with full transparency support.
Drop images here
or · paste works too
BMP files · batch up to 50 · 100 MB each
Processed on your device — nothing uploaded
No files yet. Drop some above to get started.
BMP files are essentially uncompressed, so they are enormous. Converting to PNG keeps every pixel exactly — it's lossless too — while shrinking the file to a fraction of the size, with transparency support as a bonus.
BMP writes pixels to disk essentially raw, so file size is simply width × height × colour depth — brutal for anything bigger than an icon. PNG stores the identical pixels losslessly but compressed, routinely reclaiming most of that space, and adds an alpha channel BMP never had. Nothing about the image itself changes.
How to convert BMP to PNG
- 1
Open BMP to PNG Converter
Load this page — everything runs in your browser, so there's nothing to install.
- 2
Add your files
Drag and drop BMP images onto the workspace, or click to browse. Add several at once for batch processing.
- 3
Adjust the settings
Fine-tune the output with the options panel and watch the result update live.
- 4
Download your result
Save each file or grab everything as a single zip. Your originals are never uploaded.
When should you convert BMP to PNG?
- Shrinking a huge BMP export from a legacy program.
- Getting a lossless but far smaller version of a BMP.
- Putting a BMP graphic on the web, where BMP isn't supported.
- Adding transparency support to a flat bitmap image.
How BMP and PNG compare
BMP is best for legacy desktop workflows — convert it to png, jpg or webp for any real use. PNG is best for logos, icons, screenshots, graphics with transparency, and images you will edit repeatedly.
Here's how BMP and PNG line up on the things that matter:
| Property | BMP | PNG |
|---|---|---|
| Compression | Uncompressed (lossless) | Lossless |
| Transparency | No | Yes |
| Animation | No | No |
| Typical file size | Very large — pixels are stored with little or no compression | Larger than JPG/WebP for photos; efficient for flat graphics |
| Support | Universal on desktop; uncommon on the web | Universal — supported everywhere |
| Best for | Legacy desktop workflows — convert it to PNG, JPG or WebP for any real use. | Logos, icons, screenshots, graphics with transparency, and images you will edit repeatedly. |
Things to keep in mind when converting BMP to PNG
- For typical images, going from BMP to PNG is straightforward — there are no meaningful downsides to watch for.
BMP to PNG: quality, file size and privacy
Because PNG compresses losslessly, nothing is thrown away in the conversion: the PNG you download is a pixel-perfect copy of the decoded BMP.
Your BMP files stay on your machine from start to finish. The page brings the tool to your browser rather than sending your images to a server — which is also why there's no queue, no daily cap, no watermark and no sign-up.
Frequently asked questions
Are my files uploaded when I convert BMP to PNG?
No files are sent to us or anyone. The converter is code that runs in your browser tab; your BMP images are opened, converted and saved without touching the network.
Is the BMP to PNG converter free?
Yes. Converting BMP to PNG is free and unlimited, with no sign-up and no watermark.
Can I convert many BMP files at once?
Yes, batches work. Each BMP converts independently, and a zip download collects all the results in one click.
Will the PNG file be smaller than my BMP?
Almost certainly — BMP is uncompressed, so the PNG file is usually a small fraction of the original size.
Do I need to install software to convert BMP to PNG?
No software is needed to turn BMP into PNG — the whole tool arrives with the page when it loads, which is also why it works the same on every operating system.
Will converting BMP to PNG reduce quality?
No — PNG is lossless, so quality is preserved exactly. Detail already lost in the original BMP can't be restored, but nothing new is lost.