Convert BMP to PNG for Web Use
Convert BMP images to PNG — right in your browser. Get a much smaller, lossless file that opens everywhere. Your images never leave your device. No watermarks, no sign-ups.
Your images never leave your device
Nothing to delete later
Secure connection
Works in every modern browser
How it works
- 1
Add your BMPs
Drop your BMP files onto the page or click to browse and select them.
- 2
Convert
Press Convert — each BMP is re-encoded as a PNG in your browser.
- 3
Download
Save the PNG files instantly, individually or all at once.
Why use this tool
Far smaller files
BMP is uncompressed and huge; PNG compresses losslessly, often cutting the size dramatically.
Same quality
PNG is lossless, so every pixel of the BMP is preserved exactly.
Opens everywhere
PNG works on the web, in apps, and on devices that will not display a BMP.
Private by design
The BMP is decoded locally in your browser — your images are never uploaded.
Free & unlimited
No account, no trial, no per-file charges — convert as many BMPs as you like.
Works on any device
Phone, tablet, or computer — it runs in the browser you already have.
What does converting BMP to PNG do?
BMP (Bitmap) is an old, uncompressed image format from the Windows world: it stores every pixel raw, which makes files very large and awkward to share or upload. PNG stores the same image with lossless compression, so it looks identical but takes far less space, and it opens on the web, on phones, and in modern apps that do not handle BMP. Converting BMP to PNG gives you that smaller, universally compatible file without losing any quality. Because this tool runs entirely in your browser, the image is decoded on your own device and is never uploaded.
When should you convert BMP to PNG?
Convert whenever you have a BMP that is too large or will not open where you need it. BMP files are common from old software, scanners, and screenshots on Windows, but they are unwieldy: too big to email comfortably and unsupported by most websites and mobile apps. PNG solves both problems at once — a much smaller file that opens everywhere, with identical, lossless quality. If you specifically need the smallest possible photo and do not need transparency, JPG is even lighter; but for exact quality, PNG is the safe choice.
Will I lose quality converting BMP to PNG?
No. PNG uses lossless compression, so the converted image is pixel-for-pixel identical to the BMP — nothing is thrown away. You simply get the same picture in a much smaller, more compatible file. This makes PNG ideal when the BMP is a screenshot, a graphic, or any image where you want to preserve every detail exactly. The only trade-off is that for photographic images a JPG would be smaller still, but at the cost of some lossy compression.
PNG or JPG for a converted BMP?
Choose PNG when you want exact, lossless quality or the BMP has transparency — screenshots, graphics, logos, and anything with sharp edges or text all stay perfectly crisp. Choose JPG instead when the BMP is a photograph and you want the smallest possible file, since JPG compresses photos much further at a quality that still looks great. Both are far smaller than the original BMP. For most Windows BMPs — screenshots and graphics — PNG is the natural upgrade.
Limitations to be aware of
PNG is lossless, so for a photographic BMP it will be larger than a JPG of the same image — if minimum size matters more than exact fidelity, convert to JPG instead. Converting also cannot improve a BMP that was already low quality; it preserves exactly what is there. And while PNG supports transparency, an ordinary BMP usually has none, so the result will simply be a solid image. For the vast majority of BMPs, though, PNG is a smaller, universally compatible upgrade with no downside.
Using it on mobile and desktop
On a phone, convert a BMP someone sent you into a PNG your gallery or a form will accept, with no app — everything runs locally. On a computer, drop a batch of BMPs from old software or a scanner and convert them all to PNG at once, shrinking a folder of bulky bitmaps into compact, shareable files. Because there is no app to install, the same link works on every device, and nothing you add is ever uploaded.
Why convert here instead of another site?
Most online BMP-to-PNG converters upload your files to a server, convert them there, and promise to delete them later. This tool never uploads anything — the BMP is decoded inside your browser, so images that may be personal or work-related stay on your device from start to finish. There are no watermarks, no sign-up wall, and no cap on how many files you convert. It is faster too, with no upload-and-wait step, and it works offline once the page has loaded.
How it compares
| Feature | This tool | Typical online converters |
|---|---|---|
| Files uploaded to a server | Never — decoded in your browser | Usually uploaded |
| Lossless, identical quality | Yes | Yes |
| Much smaller than BMP | Yes | Yes |
| Watermark on output | No | Sometimes |
| Account or sign-up | Not required | Often required |
| Price | Free | Free / paid tiers |
Features
BMP to .png
Turns a bulky BMP into a compact, lossless PNG that opens everywhere.
Lossless compression
PNG keeps every pixel while shrinking the file, with no quality loss.
Preserves transparency
If the BMP has an alpha channel, PNG keeps the transparency intact.
Batch convert
Add several BMPs and turn them all into PNGs in one go.
Keeps dimensions
The picture stays the same width and height — only the format changes.
No installation
Nothing to download or install — it works on the web page.
Arabic & RTL friendly
Full interface in eight languages, including right-to-left Arabic.
Secure by default
Served over HTTPS, with no file tracking and no third-party upload.
Who uses it
Windows users
Turn bulky BMP screenshots and exports into compact PNGs that open anywhere.
Designers & editors
Convert a BMP to a lossless PNG for editing with identical quality.
Anyone emailing a BMP
Shrink a huge BMP into a small PNG that is easy to send and open.
Everyday users
Make an old BMP usable everywhere as a PNG — privately, on their own device.
Frequently Asked Questions
PNG is a lossless format that keeps text and edges razor-sharp and supports transparency, making it ideal for logos, screenshots and graphics. The whole conversion happens locally in your browser, so it is instant and private.
Yes. If the source image has transparent areas, they are preserved in the PNG (unlike JPG, which fills them with white).
No. The conversion runs entirely in your browser using the Canvas API — your images are never uploaded, stored, or shared.
Yes. Add as many BMP images as you like and convert them in one pass; download each result individually or all together as a ZIP.