BMP to PNG Online Converter

Convert your BMP file to PNG format in simple 3 clicks.

PNG⌄

Your file will be uploaded to DigitalOfficePro storage. By using this service, you agree to the DigitalOfficePro Terms of Use.

⚙ Optional Settings

Resize

Color Filter

DPI

dpi

Crop (px)

Convert BMP to PNG Online — Free & Fast

BMP is uncompressed and Windows-only — robust, but impractical for most modern needs. Converting BMP to PNG gives you a lossless format that's typically 60–80% smaller, while preserving every pixel perfectly. PNG also adds alpha-channel transparency support that BMP entirely lacks. For any workflow starting with BMP source files — game textures, UI screenshots, or system resources — PNG is the natural next step before editing or publishing.

Why Convert BMP to PNG?

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60–80% size reduction

PNG compresses BMP files by 60–80% with zero quality loss, making them practical to store and share.

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Add transparency

Convert to PNG, then add alpha-channel transparency in any editor — something BMP can't carry.

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Web-ready

Browsers display PNG natively. BMP is not supported in any web browser — PNG is required.

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Cross-platform

PNG works on Windows, macOS, Linux, iOS, and Android. BMP is effectively Windows-only.

How to Convert BMP to PNG?

Upload your BMP file

Click "Choose File" or drag and drop your BMP image into the upload area.

Select PNG as output format

Choose "PNG" as the output format. Optionally adjust dimensions, color filters, or DPI.

Convert the file

Click "Convert Now" to start converting your BMP file to PNG.

Download the PNG file

Once the conversion is complete, download your converted PNG file instantly.

BMP

File extension.bmp
DescriptionBMP (Bitmap) stores uncompressed bitmap digital images independently of the display device. Large file sizes but no quality loss.
Associated programsMicrosoft Paint, Adobe Photoshop, GIMP, MS Photo Editor
Developed byMicrosoft
MIME typeimage/bmp

PNG

File extension.png
DescriptionPNG (Portable Network Graphics) is a lossless raster image format that supports transparency. Ideal for graphics, logos, icons, and images that require a transparent background.
Associated programsAdobe Photoshop, GIMP, Microsoft Paint, Preview (Mac)
Developed byPNG Development Group
MIME typeimage/png

✅

Pro tip: BMP files often have no DPI metadata. If print size matters, set the correct DPI in your PNG after conversion using any image editor.

Free BMP File Conversion Tools

Format Guide

BMP vs PNG: Complete Format Guide

Feature

BMP (source)

PNG (target)

🗜️Compression

None

Lossless

🔍Transparency

Only in 32-bit BMP via BITMAPV4/V5HEADER alpha channel — inconsistently supported by applications

Full 8-bit alpha channel — each pixel can be any opacity level from fully transparent (0) to fully opaque (255)

🎬Animation

Not supported

Not in standard PNG; APNG (Animated PNG) is a non-standard extension with limited, inconsistent support

🎨Color Depth

1-bit monochrome to 32-bit RGBA — most common use is 24-bit (16.7 million colors)

24-bit RGB (16.7M colors) or 32-bit RGBA (16.7M colors + full alpha); up to 48-bit for professional workflows

📦File Size

3 MB – 25 MB per image — a 1920×1080 24-bit BMP is approximately 5.9 MB

100 KB – 10 MB — significantly larger than JPG for photographic content

🌐Browser Support

Technically supported by most browsers but virtually never used on the web due to enormous file sizes

Universal — all modern browsers, operating systems, and devices including IE7+

🏆Best For

Legacy Windows apps

Graphics, logos, UI

Common Use Cases: BMP → PNG

🌐 Web graphics preparation🎨 Design software import📤 Cross-platform file sharing💾 Lossless size reduction

⚠️This is one of the most recommended BMP conversions — you get identical lossless quality at 50–70% smaller files, plus added transparency support and universal cross-platform compatibility.

BMP

About the {from} Format BMP

BMP (Device-Independent Bitmap) was introduced by Microsoft with the Windows 3.0 SDK in 1990 as the native raster format for Windows. It stores pixel data with zero compression, ensuring perfect reproduction across all hardware. BMP dominated early Windows computing for wallpapers, icons, and application graphics. As the internet grew, its massive file sizes made it impractical for any networked use, displacing it with JPG, PNG, and WebP.

Strengths

+Zero compression artifacts — the highest possible fidelity for raw storage

+Simple, well-documented format trivial to read/write programmatically

+Universal support across all Windows software and development tools

+Direct pixel data access with no decoding overhead

Limitations

−Extremely large files — a 1080p image is ~6 MB vs ~300 KB as JPG

−No practical web use — impractically large for any internet delivery

−Limited support outside Windows ecosystem

−No meaningful advantages over PNG for any modern use case

When to Use

→Legacy Windows applications that exclusively require BMP format

→Automated Windows image processing pipelines as an intermediate format

→System resource files (wallpaper, specific application bitmaps)

→When absolute raw pixel fidelity is needed and file size is irrelevant

Tips

•PNG achieves identical lossless quality to BMP at 50–70% smaller file sizes

•Convert to JPG for a 95%+ file size reduction with visually excellent quality

•24-bit BMP and 24-bit PNG are visually identical — PNG is always the better choice

•There are essentially no modern use cases where BMP is preferable to PNG

PNG

About the {from} Format PNG

PNG was created in 1996 as a free, patent-unencumbered alternative to GIF after Unisys enforced its LZW compression patent. The PNG Development Group introduced full-color support, genuine alpha transparency, and superior lossless compression. It quickly became the web standard for logos, UI elements, and any image requiring a transparent background — a role it dominates to this day.

Strengths

+Lossless — every pixel preserved with zero compression artifacts

+Full 8-bit alpha channel for smooth, semi-transparent edges

+Ideal for text, logos, and graphics where sharpness is non-negotiable

+Unlimited re-saves without any quality degradation whatsoever

+Supports up to 48-bit color depth for professional color workflows

Limitations

−3–5× larger than JPG for photographic content

−No native animation support in standard PNG

−Slower to load than WebP for equivalent image content

−Not practical for very high-resolution photographs at web scale

When to Use

→Logos, icons, and brand marks placed over any background color

→Screenshots where text must remain perfectly sharp

→Images edited in multiple passes (keep as the master file)

→Web UI elements, buttons, icons, and interface assets

Tips

•PNG-8 (256 colors) halves the file size of PNG-24 for simple flat-color graphics

•Converting PNG to WebP typically saves ~30% file size with no visible quality change

•Alpha transparency requires PNG-24 or PNG-32 — PNG-8 only supports binary transparency

•Tools like pngquant can reduce PNG size by 50–80% with minimal quality impact

Most Popular Conversion Tools

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Frequently Asked Questions

About converting BMP to PNG.

Is this BMP to PNG converter free?

Yes, our BMP to PNG converter is 100% free to use. No registration, no login, no hidden fees.

How long does it take to convert BMP to PNG?

Conversion typically takes only a few seconds using our powerful cloud servers.

Is my BMP file secure?

Yes. Your files are processed on our secure servers and deleted immediately after conversion.

What is the maximum file size?

You can convert files up to 400MB in size for free.

Do I need to install software?

No installation required. Our BMP to PNG converter works entirely in your web browser.

Why DigitalOfficePro?

Trusted by millions of users worldwide

👤

Free to Everyone

Absolutely FREE online service. No extra cost, no registration, convert as many files as you like.

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100% Secure

Your files are automatically deleted from our servers instantly after conversion. We guarantee file security and privacy.

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High Speed Conversion

Files are converted using our powerful cloud conversion servers — faster than local desktop software in most cases.

∞

No Limitations

Unlike other services, there is no limit on the number of files you can convert.

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Quality Output

We use high quality conversion algorithms so you won't lose quality during file conversion.

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Support 100+ Formats

We support more than 200 file formats including all document, image, video, audio and ebook formats.

Supported Input Formats

Upload any of the following formats and convert to JPG, PNG, WEBP, BMP, GIF, or TIFF.

Standard Image

JPGPNGWEBPBMPGIFTIFFHEICPPMWBMP

Design & Vector

PSDAISVGXCFTGAPCX

RAW Camera

ARWCR2CRWDNGNEFORFPEFRAFRAWSR2MRWERFMEF3FRX3F