How do I convert BMP to PNG?

Upload your BMP file above. It is converted to PNG automatically (change the output format or quality in the Settings tab if you need to), then click Download. There is nothing to install.

Does converting BMP to PNG lose quality?

No. Both formats are lossless, so every pixel is kept exactly.

BMP or PNG: which should I use?

Use BMP for older Windows programs, embedded devices and tools that need raw pixels. Use PNG for screenshots, logos, text graphics and cut-outs. Keep in mind the main drawback of PNG: large files for photographs.

BMP stores pixels with no compression at all. Files are large, but very old or simple software that can’t read modern formats can usually read a BMP.

Is the BMP to PNG converter free?

Yes. Convert, preview and download a single result without creating an account. Premium adds batch conversion (many files into one ZIP) and larger uploads.

Convert BMP to PNG — Lossless, With Transparency

Convert BMP to PNG online for a lossless copy that stays sharp when re-saved. No software to install. Preview one free or batch-convert with Premium.

Drop your BMP file or click to browse

Why convert BMP to PNG?

PNG files are usually smaller than BMP for the same picture, so pages load faster and uploads finish sooner.
PNG is supported far more widely than BMP, so the file is easier to open, share and upload.
PNG is made for screenshots, logos, text graphics and cut-outs.

What to expect when converting BMP to PNG

Your original BMP file isn’t changed: you download a new PNG copy.
The PNG keeps the pixel dimensions of your BMP.

BMP vs PNG

Feature	BMP	PNG
Full name	Windows Bitmap	Portable Network Graphics
Origin	Created by Microsoft for Windows	Published as a W3C standard in 1996
Compression	Uncompressed	Lossless
Transparency	No (in the 24-bit BMPs most apps read)	Yes — smooth, partial transparency
Animation	No	No
Colour	16.7 million colours (24-bit)	Up to 16 bits per channel
Where it opens	Windows and macOS apps, older software and browsers	All browsers, phones, computers and image editors
Best for	older Windows programs, embedded devices and tools that need raw pixels	screenshots, logos, text graphics and cut-outs
Main drawback	very large files and no transparency	large files for photographs

In short: choose BMP for older Windows programs, embedded devices and tools that need raw pixels; choose PNG for screenshots, logos, text graphics and cut-outs.

BMP to PNG: the same pixels in a much smaller file

BMP files usually come from Windows Paint, older screenshot tools, legacy programs or devices that dump raw images. They are lossless but uncompressed, so even a plain 1920 × 1080 screenshot weighs about 6 MB. PNG is lossless too, so every pixel stays identical while compression typically makes screenshots and diagrams far smaller.

Most BMPs are 24-bit and fully opaque, and the PNG will be the same. A 32-bit BMP that stores an alpha channel keeps its transparency in the PNG; if every alpha value in the file is zero, which some programs write by mistake, the image is treated as opaque instead of invisible.

A few BMP variants can't be opened: files using RLE compression and files that wrap a JPEG or PNG inside. Re-save those as a standard uncompressed BMP, or straight to PNG, from the program that made them. Once converted, crop the screenshot to the part that matters or shrink it to a KB target for an upload form.

Frequently asked questions

How do I convert BMP to PNG?: Upload your BMP file above. It is converted to PNG automatically (change the output format or quality in the Settings tab if you need to), then click Download. There is nothing to install.
Does converting BMP to PNG lose quality?: No. Both formats are lossless, so every pixel is kept exactly.
BMP or PNG: which should I use?: Use BMP for older Windows programs, embedded devices and tools that need raw pixels. Use PNG for screenshots, logos, text graphics and cut-outs. Keep in mind the main drawback of PNG: large files for photographs.
What is a BMP file?: BMP stores pixels with no compression at all. Files are large, but very old or simple software that can’t read modern formats can usually read a BMP.
Is the BMP to PNG converter free?: Yes. Convert, preview and download a single result without creating an account. Premium adds batch conversion (many files into one ZIP) and larger uploads.

What you can do with BMP to PNG

Review the main capabilities before you begin.

Convert BMP files to PNG online
Keep every pixel with lossless PNG output
Switch to any other output format in Settings
Batch-convert many BMP files into one ZIP
Preview the result before you download

Use this tool

Settings reference

Available controls for BMP to PNG.

Settings

Output formatDropdown: Chooses the file type you download. The page opens on its own output format; switch to any other format before converting.Options: JPGPNGWebPAVIFGIFTIFFBMPICOPDF
QualitySliderRange: 20–100 · Default: 90: For JPG, WebP, AVIF and image-to-PDF output: higher keeps more detail but makes a bigger file; 60–80 suits most photos. Documents (Publisher, XPS, EPS…) become PDFs with every page and sharp text, with no quality setting.
Lossless modeOn / Off: For WebP and AVIF output: keeps every pixel exactly (best for logos, graphics and transparency) at the cost of a larger file.
Background fillColor picker: For JPG, BMP and image-to-PDF output, which can’t store transparency: the colour that fills transparent areas (white by default).