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Convert BMP files to PNG online for free. Upload your BMP image and download a PNG in seconds. No software, no signup, no watermarks.
PNG is lossless like BMP but uses efficient compression to produce much smaller files. A BMP image converted to PNG will look identical to the original while being significantly smaller, and it will open correctly in any browser, application or operating system. PNG is the better long-term format for any image that currently exists as a BMP.
Unlike converting BMP to JPG, converting to PNG does not introduce any compression artefacts. This makes it the right choice for diagrams, technical drawings, screenshots with sharp text, and any image where pixel-perfect reproduction matters.
BMP to PNG conversion gives you a lossless, compressed file that is compatible everywhere — without the quality tradeoffs of JPG.
Screenshots of code, diagrams, flowcharts and UI mockups often have sharp edges, solid colours and text that look noticeably worse when compressed with JPG. Converting BMP screenshots of technical content to PNG preserves every pixel perfectly, keeping text and lines crisp while still being much smaller than the original BMP.
PNG is the preferred format for screenshots and diagrams used in web documentation, tutorials, help articles and knowledge bases. Converting BMP images from legacy tools or older Windows screenshots to PNG makes them usable in any modern CMS, static site generator or documentation platform that accepts image uploads.
Legacy Windows software that produces BMP output can be updated to PNG output by converting the files after export. PNG files are smaller, broadly supported, and do not degrade with re-saves — making them a much better long-term storage format than BMP for any image archive.
Quick answers about how this tool works and how to get the best results.
For virtually all use cases, yes. PNG is lossless like BMP but uses efficient compression to produce files that are typically 50 to 80 percent smaller. PNG is also supported by every browser, operating system and application, while BMP compatibility outside Windows is more limited. PNG is simply BMP done better.
No. Both BMP and PNG are lossless formats. Converting BMP to PNG does not discard any image data — the PNG will look pixel-for-pixel identical to the original BMP. The size reduction comes from lossless compression, not from removing image information.
Photographic BMP images — pictures with natural colour gradients, skin tones and tonal variation — compress very efficiently as JPG with minimal quality loss. For BMP files containing screenshots, diagrams or text with sharp edges, use a quality setting of 85 or above to preserve crispness in the JPG output.
Yes. Conversion runs in your browser and your BMP file is never sent to a server. Close the tab and the data is removed from memory.