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BMP to PNG converter
Free BMP to PNG converter in your browser. Files stay on this device. Nothing is uploaded.
Drop images here
or click to choose. Paste works too.
Files never leave this device. Conversion runs in your browser.
Why convert BMP to PNG?
BMP is lossless (Windows-centric legacy interchange). PNG is lossless (graphics with sharp edges or transparency). Converting BMP to PNG remaps pixels into the target container in your browser. PNG can store transparency even if the BMP source did not.
What changes in the file
- Both formats are lossless; pixels stay bit-stable aside from color-space handling
- PNG can keep an alpha channel for later edits
- You can resize, adjust quality where relevant, and strip EXIF on export
- Conversion runs on this device — the file is not uploaded
How to convert BMP to PNG
- Drop one or more BMP files onto the converter (or pick them from disk).
- Confirm the output is set to PNG, then adjust quality, size, or metadata if needed.
- Download the converted PNG file — processing never left your browser.
About BMP
BMP is an uncompressed Windows bitmap format. It is simple and widely readable on Windows, but files are large compared with modern compressed formats.
About PNG
PNG is a lossless raster format with optional transparency. Pixels are preserved exactly, so it is the usual choice for screenshots, UI, logos, and any image that needs a clean alpha channel.
Common questions
Is this BMP to PNG converter free?
Yes. Formatly converts BMP to PNG in the browser at no charge and without an account.
Do you upload my BMP files?
No. Decoding and encoding run locally with browser APIs and WebAssembly codecs when needed. Files stay on this device.
Will converting BMP to PNG reduce quality?
PNG is lossless, so the export keeps the decoded pixels. If the source was already lossy (BMP), prior compression artifacts remain.