Convert BMP to PNG Online

Full version

Total Image Converter To Convert TIFF, JPEG, ICO, BMP

Convert Images in Batch!;
Convert BMP to PNG and in many other formats
Process hundreds of files in 3 clicks;
Have a desktop converter that works without Internet;
Keep your files safe, don't send them to the web;
Get a more poweful engine for large images and RAW photos.

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Total Image Converter

JPEG, TIFF, PSD, PNG, etc.

Total Image Converter supports the widest list of output file types: PDF, TIFF, BMP, PNG, JPEG, JPEG2000, ICO, GIF, PCX, TGA, PXM, PS, PCL! Besides, it converts many rare formats like PALM, PICT, XPM, FIX.

Rotate Images

Along with conversions you can rotate your images! All is done in batch so you save a lot of your valuable time.

Resize Images

With Total Image Converter it's very easy to resize your photos or images in batch. Make them suitable for the web or emailing.

RAW photos

Total Image Converter supports almost all RAW camera photos (CRW, CR2, NEF, PEF, RAF, X3F, RAW, BAY, ORF, NRW, SRF, MRW). Save them as TIFF or JPEG files for easy publishing or sharing.

Watermarks

Add text watermarks to the header or the footer of the output file to prevent unauthorized use.

Clear interface

The inerface of the pss is clear and straightforward. The built-in Preview panel helps you to view each file full-sized and learn the info about it.

Command line

Total Image Converter can be run via command line (get the ready-to-use BAT file from GUI settings).

How to convert BMP to PNG?

💾 Upload Your File: Go to the site, click on «Upload File,» and select your BMP file.

✍️ Set Conversion Options: Choose PNG as the output format and adjust any additional options if needed.

Convert and Download: Click 👉«Download Converted File»👈 to get your PNG file.

Cloud Based

There is no need to install any software to convert BMP to PNG with CoolUtils. Simply access the internet, and you can easily convert your file online with our service.

Secure

Our hardware operates in top-tier, highly secure data centers equipped with advanced electronic surveillance and multi-factor access control systems.

Ease of Use

Converting BMP to PNG online has never been so simple. Drop your Windows BMP bitmap and the converter produces a lossless PNG — same pixel-perfect quality, significantly smaller file size, transparent background support. Ideal for documentation, web use, and any context where BMP's large size is a problem. No software required.

Privacy

We understand the importance of privacy, which is why we've developed a comprehensive privacy policy detailing how we handle your files and personal information. You can read the policy here.

BMP File

File extension	.BMP, .RLE, .DIB
Category	Image File
Description	May be the simplest file format, BMP was developed jointly by Microsoft and IBM. That is why it is widespread on Windows platform. This extension is characterized a raster graphic format which is recognized by many programs today. In comparison with other bitmap formats, JPEG and GIF, BMP keeps color data for each pixel in the image and doesn't compress images to decrease a file size. That is what makes it perfect file format for printable images.
Associated programs	Adobe Photoshop MS Paint Microsoft Photo Editor Paintbrush
Developed by	Microsoft
MIME type	image/bmp Image/x-ms-bmp
Useful links	More detailed information on BMP files
Conversion type	BMP to PNG

PNG File

File extension	.PNG
Category	Image File
Description	PNG images provide lossless compression, that is why the quality of the picture is nice, but the size of the file is huge. Because of it this file format is used by photographers. PNG may have several layers of transparency and even include short text descriptions which help search engines to examine the file. Although PNG was developed to replace GIF and partly other formats, it doesn’t support animation since it can’t contain several images like GIF.
Associated programs	Apple Preview Corel Paint Shop Pro GIMP - The GNU Image Manipulation Program (LINUX) Microsoft Windows Photo Gallery Viewer Safari
Developed by	PNG Development Group
MIME type	image/png
Useful links	More detailed information on PNG files

2026-02-04

BMP screenshots from our legacy software were enormous files. Converting to PNG cut the size by 70% with zero visible quality difference.

Fatima Al-Zahra

2026-03-30

We receive BMP fax outputs from an old system and need them as PNG for our web portal. This converter handles the daily batch automatically via command line.

Oliver Schmidt

2026-05-17

Converted a folder of BMP illustrations to PNG for a web project. The lossless compression kept all fine line details sharp and upload sizes became manageable.

Ayesha Raza

Rating BMP to PNG

4.8 (890 votes)Rate It

Convert BMP to PNG — Frequently Asked Questions ▼

Is BMP to PNG conversion lossless?

Yes. BMP stores uncompressed pixel data, and PNG uses lossless compression. Converting BMP to PNG preserves every pixel exactly — there is no quality loss. The PNG file will look identical to the BMP but will be substantially smaller.

How much smaller will the PNG be compared to the BMP?

Typically 60-80% smaller, depending on image content. Images with large areas of solid color compress especially well. A 6 MB BMP screenshot often becomes a 300-500 KB PNG. The exact ratio depends on how much redundancy is in the pixel data.

Does BMP support transparency? Will it carry over to PNG?

Standard BMP files do not support alpha channel transparency. Some extended BMP variants (32-bit BMP with alpha) do, and those values will carry over to PNG. In most cases you are converting an opaque BMP, and the PNG will also be fully opaque.

Can I use PNG files on websites?

Yes. PNG is one of the three core web image formats (alongside JPG and WebP). Browsers have supported PNG since the late 1990s. BMP, by contrast, is not supported as a web format — it must be converted before use online.

What is the file size limit for the online converter?

The online converter accepts BMP files up to 50 MB. Uncompressed BMPs can be large — a 4K 24-bit BMP is about 24 MB — so most single images will be under the limit. For large images or batch jobs, use Total Image Converter on the desktop.

Can I convert a folder of BMP files to PNG at once?

The online tool processes one file per conversion. For bulk conversion, use Total Image Converter (desktop): TotalImageConverter.exe C:\bmp_images C:\png_output /ConvertTo png /ProcessRecursively.

What is the best desktop tool for batch BMP to PNG conversion?

Total Image Converter handles batch BMP-to-PNG conversion with command-line support, folder recursion, and scheduling via Windows Task Scheduler. It costs $29.90 with a 30-day free trial at coolutils.com/TotalImageConverter.

Convert BMP to PNG Online

Developers and designers convert BMP to PNG to get lossless compressed images that are dramatically smaller in file size without any quality loss.

Lossless conversion — PNG uses lossless compression, so no pixel data is changed during conversion
Massive size reduction — PNG files are typically 60-80% smaller than equivalent BMP files
Transparency preserved — if a BMP has no background, PNG supports an alpha channel for transparent areas
Universal web support — PNG is natively supported by all browsers, CMSes, and image editors
Files deleted after 1 hour — your images are removed from the server automatically

What Is BMP?

BMP (Bitmap) is an uncompressed raster image format native to Windows. It stores every pixel without any compression, resulting in very large file sizes — a 1920x1080 24-bit BMP is about 6 MB. BMP files are unsuitable for web use, email, or any workflow with storage or bandwidth constraints. They are mostly found as output from older Windows tools and screen capture utilities.

What Is PNG?

PNG (Portable Network Graphics) uses lossless compression that reduces file size substantially without changing pixel values. It supports 24-bit color and a full alpha transparency channel. PNG is the standard format for screenshots, logos, icons, and any graphic where text sharpness or transparent backgrounds are required.

Online Converter vs Desktop Converter

Feature	Online (this page)	Total Image Converter (desktop)
Batch conversion	✓ Single file	✓ Entire folders, recursive
File size limit	Up to 50 MB	No limit
Automation / scripting	✗	✓ Command-line, .bat, Task Scheduler
Files stay local	✗	✓ No upload required
Price	Free	From $29.90

Batch CLI example: TotalImageConverter.exe C:\bmp_files C:\png_output /ConvertTo png /ProcessRecursively

How to Convert BMP to PNG

Click Choose File and select your .bmp file
The format is detected automatically
Select PNG as the output format
Click Convert — processing takes a few seconds
Click Download to save your PNG file
Use the smaller PNG file in your web project, CMS, or design tool

When Do You Need BMP to PNG?

Web publishing — BMP files cannot be used on websites; PNG is the correct lossless format for the web
Storage optimization — replace uncompressed BMPs in archives with PNG to reclaim significant disk space
Email attachments — BMP files are blocked or flagged by many mail servers; PNG is universally accepted
Screenshot workflows — Windows tools sometimes save screenshots as BMP; PNG is the appropriate output for sharing
Design assets — logos and icons saved as BMP lack transparency support; PNG supports alpha channels