01
Add BMP files
Drop a single BMP or a batch of files into the converter. Files are identified from raw byte signatures, not file extensions.
BMP to PNG Converter
Convert BMP to PNG online for free. Convert large BMP bitmaps to compact PNG. Fast, 100% private, and processed directly in your browser with zero server uploads.
Convertto
Drop BMP images here, or click to choose files
Processed locally in your browser · Zero server uploads
ReadsPNG, JPG, WebP, GIF, BMP, SVG, AVIF, ICO, HEIC, TIFF, JPEG XL
WritesJPG, PNG, WebP, AVIF, JPEG XL, GIF, BMP, TIFF, ICO, PDF
Rate this tool
(0 ratings)
In-Browser Conversion
What is BMP to PNG Converter?
The BMP to PNG converter transforms your BMP files into lossless with full transparency — logos, screenshots, line art. Everything runs client-side in your browser using high-performance codecs, ensuring 100% data privacy and zero cloud file uploads.
Universal In-Browser Image ConversionBMP to PNG Processing
Client-side conversion workflow: Drag and drop BMP files, customize settings, and convert to PNG in local browser memory.
Technical Architecture100% In-Browser Memory Pipeline
Input Format.bmp
BMP
Decoded directly via browser hardware-accelerated image pipeline.
Engine: Browser NativeZero upload
Local MemoryWASM / RAM
Uncompressed Pixels
Decoded into raw RGBA buffer inside your browser tab memory. No cloud roundtrips or server queues.
RAM Security100% Private
Target Format.png
PNG
Lossless with full transparency — logos, screenshots, line art.
Engine: Browser NativeDirect export
End-to-end local architecture: Files are processed strictly within your device's memory and never leave your computer or phone.
How to convert BMP to PNG
Convert your files in three simple steps directly in your browser:
02
Convert to PNG
The browser decodes the source locally, then writes PNG at original pixel dimensions in browser memory.
03
Download PNG
Save individual converted PNG files, or download the entire batch as a single ZIP archive.
Key Advantages
Why Convert BMP to PNG Locally?
Experience fast, secure, and lossless conversion with our privacy-first browser architecture.
Privacy & SecurityZero Uploads
100% Private In-Browser Processing
Your BMP photos are decoded and encoded directly inside your browser tab memory. No files are ever sent to remote cloud servers, keeping your personal photos and sensitive documents completely secure.
Zero network transmission - Complete local security
Fidelity & EngineOptimized PNG
Pixel-Perfect Visual Quality
PNG is lossless, so every pixel and the full alpha channel survive the conversion. PNG is one of the three formats browsers can encode themselves, so nothing extra is downloaded and conversion is near-instant.
Original dimensions preserved - No watermarks
ArchitectureWASM Pipeline
How the Conversion Pipeline Works
The conversion executes in two discrete steps inside this browser tab: first, the BMP source is decoded into uncompressed raw pixels in memory. Second, those raw pixels are re-encoded into valid PNG format without quality degradation.
SpecificationsStandards
Format & Privacy Guarantees
- •Dimensions: Exact pixel resolution is retained.
- •Transparency: Alpha transparency is preserved.
- •Metadata: EXIF & GPS location tags are stripped for complete privacy.
Full compliance with web standard image codecs
Continue with another image tool
After checking an image, choose a tool for the change you need. Each tool has a different purpose.
Compress Images to KB or MB
Reduce file size to fit a KB or MB limit. Compression may also reduce pixel dimensions to reach your target.
Explore tool
Image Resizer and Social Media Sizes
Change pixel width and height for a website, print layout or social media preset. Enlarging an image does not restore missing detail.
Explore tool
Metadata Remover
Need to strip or edit EXIF before sharing? Open Metadata Remover to remove GPS, camera data and other hidden fields.
Explore tool
Image Size Finder
Check pixel width, height, megapixels and aspect ratio instantly for one image or a full batch.
Explore tool
Related Image Converters
Explore more image conversion options for BMP, PNG, and other popular web formats.
Convert to PNG
Convert other image formats into optimized PNG:
BMP to PNG FAQ
How do I convert BMP to PNG?
Drop your BMP file into the tool above, then download the PNG. Everything runs in your browser - your image is never uploaded to a server.
Is converting BMP to PNG free?
Yes. There is no signup, no watermark and no limit on the number of files.
Will I lose quality converting BMP to PNG?
PNG is lossless, so every pixel and the full alpha channel survive the conversion.
What is the difference between BMP and PNG?
Convert large BMP bitmaps to compact PNG. Lossless with full transparency — logos, screenshots, line art.
Does converting BMP to PNG need a plugin or an install?
No. PNG is one of the three formats browsers can encode themselves, so nothing extra is downloaded and conversion is near-instant.
Is transparency kept in the PNG?
Yes. If the BMP has an alpha channel it carries through to the PNG.
Is EXIF and GPS data kept in the PNG?
No. Conversion goes through raw pixels, so EXIF, GPS coordinates, IPTC and XMP are all dropped. That is usually what you want before sharing a photo - but if you need to keep the format and only remove metadata, use the Metadata Remover instead.
Free & Private In-Browser Tool
Convert BMP to PNG Online Now
Fast, 100% private, and completely free in-browser converter. Drop your BMP files and download optimized PNG in seconds.