TL;DR: Converts uncompressed BMP bitmaps into compressed lossless PNGs, shrinking file size with no quality loss; great for screenshots, icons, and pixel art.
Convert BMP to PNG online for free — turn uncompressed Windows BMPs into compressed lossless PNGs, ideal for screenshots, icons, and pixel art.
Like the rest of the 214-tool PrivaTools suite, BMP to PNG is MIT-licensed and self-hostable. The public demo deletes your file as soon as the response leaves the server — verifiable in the open-source codebase on GitHub.
Convert BMP to PNG online for free — turn uncompressed Windows BMPs into compressed lossless PNGs, ideal for screenshots, icons, and pixel art. Use it when you need a quick, private, no-account way to handle a file in the browser, or when you want an auditable open-source alternative to cloud converters, ad-heavy utility sites, and desktop apps. The page at /tools/bmp-to-png is designed for one clear job: upload or provide the input, choose only the options that matter, and download the result without creating an account or passing through a sales funnel.
Many non-PDF utilities run entirely in your browser; conversion or media operations that need backend libraries use the same isolated container model. Temporary input and output files are not used for analytics, model training, advertising profiles, or product telemetry. The public demo uses anonymous page-view analytics only; file bytes, extracted text, filenames, passwords, signatures, and generated results are outside that analytics path. If your organization needs stricter controls, you can self-host all 214 PrivaTools utilities and keep processing on your own infrastructure.
Before running BMP to PNG, confirm that the source file opens correctly and that you have permission to process it. Keep the original asset, choose the smallest output that still matches your target app, and test the result before deleting source media. For sensitive material, review the downloaded result before sharing it. For large files, give the browser time to finish the download and avoid refreshing the page mid-run. If a password, damaged upload, unsupported codec, or malformed document blocks processing, PrivaTools returns a plain-language error so you can pick the next recovery step instead of guessing.
BMP to PNG is intentionally narrow: it does one file task and hands the result back as a normal download. That makes the output easy to inspect, rename, archive, attach to email, or feed into another tool. If you need a repeatable workflow, save the page, bookmark a Pipeline recipe, or self-host the API so the same steps can run from internal scripts. The interface avoids accounts and cloud folders on purpose: the safest default for private files is to process only the current request, return the result, and leave long-term storage under your control.
BMP to PNG runs in any modern browser on Windows, macOS, Linux, Android, and iOS — there is nothing to install, no extension to add, and no desktop app to keep updated. Because the interface is a single page, you can bookmark it, send the link to a colleague, or open it on a phone and get the same result you would on a laptop. There are no watermarks stamped onto your output, no sign-in wall before the download, and no paid tier that unlocks the “real” version later — the BMP to PNG you see is the complete tool. For teams that would rather keep everything in-house, the same endpoint ships in the MIT-licensed, self-hostable build, so you can run it behind your own firewall with identical behaviour and no outbound calls. That combination — instant in the browser for individuals, fully self-hostable for organizations — is what keeps a private file genuinely private from upload to download.
PNG is lossless like BMP but uses compression — typically 70–90% smaller files. PNG is also the standard format for web and modern software.
Yes — pixel-perfect identical. PNG uses lossless compression, so no pixel data changes.
Supported. 1-bit, 4-bit, and 8-bit palette BMPs convert to indexed-color PNGs preserving the original palette.
Working with PDFs too? Try our Merge PDF, Compress PDF, PDF to Word, or all 214 tools.