How to convert BMP to PNG
- 1
Upload your file
Drag and drop a file or click to select one. Keep this page open while the file uploads and converts.
- 2
Convert BMP to PNG
NexMedia converts BMP to PNG on its own servers. Processing time depends on the file size and how busy the queue is.
- 3
Download the converted file
When the conversion finishes, the download appears on this page. Your converted file is kept for 2 hours, then deleted.
About BMP
BMP is the device-independent bitmap format of Windows. It usually stores every pixel uncompressed.
Legacy Windows software, simple paint programs and embedded systems.
Without compression a BMP is many times larger than a PNG of the same image.
Convert BMP to PNG online free, no account required — PNG is a lossless image format with transparency.
Change BMP to PNG without losing quality — convert BMP to PNG free in your browser.
Why is my BMP file so enormous compared to the same picture as PNG? The Windows bitmap stores pixels raw with no compression at all, so even a small screenshot can weigh megabytes that PNG stores in kilobytes.
About PNG
PNG (Portable Network Graphics) is a lossless image format created in 1996 as a free replacement for GIF. It supports full colour and an alpha channel for transparency.
Screenshots, logos, icons, diagrams and any image with text or sharp edges.
For photos a PNG is several times larger than a JPEG, and plain PNG has no animation (that is APNG).
Why convert an image to PNG? When sharp lines, text and transparency matter more than file size: screenshots and logos stay pixel-perfect.
What changes when you convert BMP to PNG
- BMP and PNG both store pixels without loss, so the picture carries over pixel for pixel.
Settings you can change
Before you convert BMP to PNG, you can adjust: Width, Height, Scale fit, Crop position, Never enlarge, Quality, Lossless, Progressive, Remove metadata, Auto-orient from EXIF, Rotate, and Background.
Limits
Each plan sets a maximum file size and a number of conversions per day, and video and audio files also have a maximum length. Guests can convert files up to 100 megabytes and 5 per day; a free account raises this to 500 megabytes and 25 per day; paid plans go up to 100 gigabytes.
Your converted PNG file is kept for 2 hours, then deleted.
BMP to PNG: questions and answers
Does converting BMP to PNG reduce quality?
BMP and PNG both store pixels without loss, so the picture carries over pixel for pixel.
What is the difference between BMP and PNG?
BMP is the Windows bitmap format, usually uncompressed. PNG is a lossless image format with transparency.
Can I change the settings when converting BMP to PNG?
Before you convert BMP to PNG, you can adjust: Width, Height, Scale fit, Crop position, Never enlarge, Quality, Lossless, Progressive, Remove metadata, Auto-orient from EXIF, Rotate, and Background.
Do I need an account to convert BMP to PNG?
No. You can convert BMP to PNG without an account; signing in raises the file-size and daily limits.
How long is my converted PNG file kept?
The PNG file you convert from BMP is kept for 2 hours, then deleted automatically.
Is every pixel of my BMP kept in the PNG?
BMP and PNG both store pixels without loss, so the picture carries over pixel for pixel.
Will converting BMP to PNG change my original file?
No. The conversion reads your BMP and writes a new PNG file, leaving your original BMP file untouched.