Convert BMP to PNG - Free Online Image Converter
Convert BMP images to PNG format in your browser. Drag, drop, and download - no upload to servers, no signup needed. Batch conversion available on paid plans. PNG output is lossless and supports transparency.
Convert legacy BMP files to lossless PNG with transparency support.
or drop bmps here
100%プライベート
即時処理
ブラウザベース
機能
Convert BMP images to PNG in one click
100% browser-based - no upload to servers
Batch conversion on paid plans (multiple files into a ZIP)
Preserves original resolution and aspect ratio
Lossless PNG output with transparency preserved
Works on any device - desktop, tablet, or phone
No watermarks on output files
How It Looks
Before
After
仕組み
1
Drop your BMP file into the workspace, or click to browse
2
PNG is pre-selected as the output format
3
Click Convert to process entirely in your browser
4
Use the Download button to save - single file, or ZIP for batches
一般的なユースケース
Convert BMP screenshots and photos to PNG for broader compatibility
Make BMP images usable in design tools, presentations, and email by converting to PNG
Batch-convert a folder of BMP files to PNG in one pass
Preserve image quality while changing format from BMP to PNG
よくある質問
Are my BMP images uploaded to a server?
No. All conversion happens in your browser using the Canvas API. Your images never leave your device.
How is the output quality?
PNG output is lossless and supports transparency.
Can I batch-convert BMP files?
Yes - on paid plans. Drop multiple files and they're processed in parallel, then packaged into a ZIP. Free Starter is limited to one file per conversion.
Why use this instead of a different BMP-to-PNG site?
PDFSub does the conversion in your browser - the images never touch our servers. Most online converters upload your files. Yours stay on your device.
Can I convert in other directions?
Yes - try the unified Image Converter, which lets you mix-and-match any of JPG, PNG, WEBP, HEIC, BMP, and TIFF inputs with JPG, PNG, or WEBP output.