How do I convert a BMP to PNG?

Drop your .bmp onto the upload zone (or click to browse, or paste with Ctrl+V / Cmd+V); it decodes and previews. Press Export, choose PNG, and download. It is completely free and runs entirely in your browser, so your image is never uploaded.

Are images uploaded to a server?

No. The BMP is decoded and re-encoded entirely in your browser; the image never leaves your device. This is the core design principle of the tool.

Why convert BMP to PNG?

BMP is uncompressed and produces very large files. PNG is lossless but compressed, so it looks identical while taking far less space, and it is supported everywhere on the web.

Does PNG keep transparency?

PNG supports transparency. If your BMP has no alpha channel (most don't), the PNG will simply be opaque; either way no quality is lost.

Is converting BMP to PNG free?

Yes — converting BMP bitmaps to PNG is completely free, forever. No account, no sign-up, and no limit on how many BMP files you convert. Your images are decoded and re-encoded entirely in your browser using the Canvas API; they are never sent to any server. The site is ad-supported.

Does it work offline?

Yes. Conversion uses the Canvas API and needs no server connection, so it works offline after the page loads.

What output formats are available?

PNG (lossless, default), JPG (smaller, for photos), or WebP (smallest).

Convert BMP to PNG

BMP to PNG is a free browser-based tool that converts old, large BMP bitmaps into compact PNG (or JPG/WebP) images. The BMP is decoded and re-encoded on your device with the Canvas API — no upload, no account — so it works offline and your image never leaves your device.

Convert BMP bitmaps to PNG directly in your browser — free, no upload required.

100% Free — Forever. No fees, ever.
Private: files are processed locally in your browser and never sent to a server.
No upload, no account, no sign-up.

How do I convert a BMP to PNG?: Drop your .bmp onto the upload zone (or click to browse, or paste with Ctrl+V / Cmd+V); it decodes and previews. Press Export, choose PNG, and download. It is completely free and runs entirely in your browser, so your image is never uploaded.
Are images uploaded to a server?: No. The BMP is decoded and re-encoded entirely in your browser; the image never leaves your device. This is the core design principle of the tool.
Why convert BMP to PNG?: BMP is uncompressed and produces very large files. PNG is lossless but compressed, so it looks identical while taking far less space, and it is supported everywhere on the web.
Does PNG keep transparency?: PNG supports transparency. If your BMP has no alpha channel (most don't), the PNG will simply be opaque; either way no quality is lost.
Is converting BMP to PNG free?: Yes — converting BMP bitmaps to PNG is completely free, forever. No account, no sign-up, and no limit on how many BMP files you convert. Your images are decoded and re-encoded entirely in your browser using the Canvas API; they are never sent to any server. The site is ad-supported.
Does it work offline?: Yes. Conversion uses the Canvas API and needs no server connection, so it works offline after the page loads.
What output formats are available?: PNG (lossless, default), JPG (smaller, for photos), or WebP (smallest).

BMP (Windows Bitmap) is typically uncompressed, so files are much larger than an equivalent PNG or JPG of the same image.
PNG uses lossless DEFLATE compression, so converting BMP to PNG shrinks the file with zero quality loss.
Browsers can decode standard BMP files natively, so this conversion needs no extra library — just the Canvas API.
PNG is universally supported on the web, whereas BMP is rarely used online due to its size.
Because conversion is client-side, the image is never transmitted, keeping it private.

🅱️ Convert BMP to PNG

Convert BMP to PNG