Image converter · runs 100% in your browser
BMP to PNG Converter
Convert BMP images to PNG entirely in your browser. BMP is uncompressed bitmap, large files, broad legacy support; PNG is lossless, supports transparency, well-supported everywhere. The conversion runs locally using the Canvas API — your file is decoded, re-encoded, and offered as a download without ever touching a server.
How to use
- Drop your BMP file onto the dropzone (or click to browse).
- The converter decodes the source image entirely in your browser using the Canvas API.
- If the target format supports it, you can adjust quality before encoding.
- Click Download to save the PNG file to your device.
FAQ
Does the PNG output have transparency?
Only if the source image had transparency. BMP files do not contain an alpha channel, so the resulting PNG file will have an opaque background. To add transparency, edit the image first.
Is the BMP to PNG converter free?
Yes. The full converter catalog is free. There is no upgrade tier, no quota, no watermark, and no signup.
Do my files upload to a server?
No. Conversion runs entirely in your browser. Open the Network tab in DevTools while you convert — you will not see your file leaving the page.
Why convert BMP to PNG?
BMP is uncompressed bitmap, large files, broad legacy support. PNG is lossless, supports transparency, well-supported everywhere. Converting between them is useful when the destination platform expects PNG or when you want the trade-offs that PNG offers.
What is the maximum file size?
Whatever your browser can hold in memory. On a modern desktop browser, several hundred megabytes is usually fine; on mobile, expect tighter limits.