Convert BMP to PNG Live
Convert BMP to lossless PNG with full transparency support.
Drop images here
or
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 is an old, essentially uncompressed bitmap format. It preserves every pixel but produces very large files, so it is almost always worth converting to a modern compressed format.
PNG is a lossless format with full alpha transparency, so it never degrades and is the standard for logos, icons, screenshots and any graphic that needs a transparent background.
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 the two formats 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
- For typical images this conversion is straightforward, with no meaningful downsides.
Quality, file size and privacy
PNG is a lossless format, so the converted image keeps full quality with no compression artefacts.
Every conversion runs on your own device, so you can convert as many BMP files as you like — with no limits, no watermarks and no sign-up, and nothing is ever uploaded.
Frequently asked questions
Are my files uploaded when I convert BMP to PNG?
No. The conversion runs entirely in your browser — your BMP files never leave your device, so it's completely private.
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 — drop multiple BMP files and download them individually or as a single zip.
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 any software?
No. The BMP to PNG converter runs in your web browser, so there's nothing to download or install — on Windows, Mac, Linux, Android or iPhone.
Will converting reduce the image 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.