Convert BMP to PNG Online
This converter changes browser-readable BMP files into lossless PNG images that are easier to use on websites, in documents and in modern image workflows.
Example
A 1600 × 1200 BMP screenshot can be converted to a PNG that keeps the same dimensions and preserves sharp interface text without JPEG-style compression artifacts.
Factors That Affect the Result
PNG works especially well for screenshots, diagrams and flat graphics, but photographic images may still produce relatively large files. Browser support for the particular BMP variant also determines whether the source can be decoded.
Frequently Asked Questions
Does PNG use lossy compression?
No. PNG uses lossless compression.
Can PNG preserve transparency?
Yes, when transparency exists in the decoded source.
Is the BMP uploaded?
No. Conversion is designed to run locally in your browser.
Related Tools
BMP to PNG Conversion Notes
PNG is usually a better choice than BMP for web use because it supports lossless compression and can reduce file size without discarding pixel detail. Transparent areas are also supported in PNG when present. After conversion, compare dimensions and transparency with the source to confirm that the exported image matches your intended use.
BMP to PNG Conversion Notes
PNG is widely supported and can preserve lossless image detail and transparency where available. Converting a BMP to PNG often reduces file size without introducing JPEG-style artifacts. Check the exported dimensions and transparency before using the converted file.
Technical Method and Practical Limits
BMP images are typically raster data with relatively little compression, while PNG uses lossless compression and supports transparency in common workflows. Converting to PNG can reduce file size without JPEG-style loss, but it cannot add detail beyond the source bitmap.