Free BMP to PNG Converter — Lossless Quality, Instant Results
Convert BMP bitmap images to PNG format entirely in your browser. PNG preserves perfect lossless quality and adds transparency support — without uploading your files anywhere.
Convert Image Format
Free online image format converter - convert between JPEG, PNG, and WebP
Drop your image here or click to browse
Supports BMP up to 25MB
All processing happens in your browser. Your images are never uploaded to our servers.
Want sharper, larger images?
After processing, upscale your image 2–4× with AI for print-quality results.
Convert BMP bitmap images to PNG format for lossless quality with dramatically smaller file sizes. PNG also adds transparency support that BMP lacks.
Powerful Features
Everything you need to transform your images with professional-quality results
Lossless PNG Output
Every pixel is preserved exactly — PNG uses lossless compression so there is no quality degradation compared to the source BMP.
60–80% Smaller Files
PNG DEFLATE compression typically reduces a BMP file by 60–80% while maintaining identical visual quality.
Transparency Support
Unlike BMP, PNG supports alpha channel transparency — ideal for logos, icons, and UI graphics.
100% Browser-Based
Your BMP file is read and converted entirely on your device using the Canvas API. Nothing is uploaded to any server.
Wide Compatibility
PNG is supported by every modern browser, design tool, CMS, and operating system — universal compatibility out of the box.
Instant Processing
Conversion completes in under a second for most BMP files, regardless of resolution.
How It Works
Get professional results in just a few simple steps
Upload BMP Image
Click or drag your BMP file. The tool accepts standard 24-bit and 32-bit BMP files up to 25 MB.
Auto-Detect BMP Format
The converter verifies the BMP header and reads raw pixel data using the browser Canvas API.
Apply Lossless PNG Encoding
Canvas renders the bitmap and exports it with PNG lossless DEFLATE compression — zero quality loss.
Download Your PNG
Click Convert and download your PNG file. The output filename matches your input with a .png extension.
Perfect For
Discover how professionals use our tool to achieve stunning results
Windows Screenshot Archiving
Older Windows tools save screenshots as BMP by default. Convert them to PNG to reduce storage usage without any quality loss.
Example: A 6 MB BMP screenshot becomes ~800 KB PNG — same pixels, fraction of the size
Icon and Logo Preparation
Convert BMP icons to PNG to gain transparency support required by web and app interfaces.
Example: Convert a company logo BMP to PNG with alpha channel for website use
Design Asset Conversion
Move legacy BMP assets from older design workflows into modern tools that prefer PNG.
Example: Convert BMP sprite sheets to PNG for use in CSS or game engines
Email-Friendly Images
BMP files are blocked by many email clients. Convert to PNG for universal email attachment compatibility.
Example: Convert an 8 MB BMP attachment to 1.2 MB PNG before sending
Why Choose Us
See the difference our AI-powered technology makes for your images
Dramatically Smaller Files
PNG lossless compression reduces BMP file sizes by 60–80% — critical for storage, sharing, and web performance.
No Quality Loss
Unlike JPEG, PNG compression is lossless. Every pixel in your BMP is faithfully reproduced in the output PNG.
Gain Transparency
PNG supports 8-bit alpha channel transparency — a capability BMP completely lacks, unlocking new use cases.
Related Resources
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Frequently Asked Questions
Find answers to common questions about our tool and how it works.