๐ Files never leave your device โ all processing happens in your browser
About BMP to PNG conversion
This free BMP to PNG converter runs entirely inside your browser using the HTML5 Canvas API. Nothing is uploaded to a server, so it is safe for private photos, client work and sensitive documents. You can convert one file or hundreds at once, resize them and fine-tune quality before downloading.
PNG is a lossless format that supports full transparency, ideal for logos, screenshots, UI assets and text-heavy graphics.
BMP is an uncompressed bitmap format with very large file sizes and poor web support.
How to convert BMP to PNG
- Add your BMP files
Drag and drop your BMP images onto the box above, or click it to browse. Multiple files are supported and processed one by one.
- Choose PNG as output
The output format is already set to PNG. Optionally set a maximum width to resize, and adjust the quality slider for lossy formats.
- Convert and download
Click Convert, review the size savings and download each file โ or use Download All to save every converted PNG image at once.
When should you convert BMP to PNG?
PNG is a lossless format that supports full transparency, ideal for logos, screenshots, UI assets and text-heavy graphics. BMP is an uncompressed bitmap format with very large file sizes and poor web support. Converting from BMP to PNG makes sense whenever you need the strengths of PNG more than the original trade-offs of BMP.
Frequently Asked Questions
How do I convert BMP to PNG for free?
Open this page, drop your BMP images into the box, make sure the output format is set to PNG, then click Convert. The conversion happens instantly in your browser and you can download each PNG file or all of them at once โ completely free with no account and no watermark.
Is it safe to convert BMP to PNG online?
Yes. This tool never uploads your images. The decoding and re-encoding is performed locally by JavaScript and the Canvas API inside your browser, so your files stay on your device. There is no server storage, no logging and no third party involved.
Does converting BMP to PNG reduce quality?
Converting to a lossless format such as PNG keeps every pixel intact. Converting to a lossy format such as WebP or AVIF discards a small amount of data controlled by the quality slider; at 80-90% the difference is usually invisible while files shrink dramatically. Note that detail already lost in the original BMP file cannot be recovered.
Will the PNG file be smaller than the original BMP?
It depends on the formats and settings. WebP and AVIF usually produce files 25-50% smaller than JPEG at similar quality, while lossless PNG is often larger than a JPEG of the same image. Use the quality slider and the max width option to control the final size, and check the savings shown next to each converted file.
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