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Convert BMP to PNG online

Convert BMP to PNG online free. Turn bitmap files into lossless PNG — live preview, browser-only, no signup.

What is a BMP to PNG converter?

A BMP to PNG converter turns a Windows bitmap (.bmp) file into a Portable Network Graphics (PNG) image so you can edit, share, or upload with broader software support. People search for bmp to png or bitmap to png when a site rejects BMP, when they need lossless pixels for design work, or when they want a smaller, more portable file than an uncompressed bitmap. This tool decodes the bitmap in the browser, draws it on a canvas, and downloads a PNG—no CloudConvert account and no upload to a remote converter.

BMP to PNG converter features

Change bitmap to lossless PNG in a few clicks.

  • Drag and drop BMP

    Drop a .bmp bitmap from your device and convert it to PNG.

  • Live preview

    See the converted image before you download.

  • Lossless PNG

    Export without adding JPEG-style compression artifacts.

  • Browser-based privacy

    No server upload or account required to convert BMP to PNG.

How to convert BMP to PNG

Three steps to change a bitmap image to PNG.

  1. Upload your BMP

    Drop or choose a .bmp file. Standard Windows bitmaps that your browser can decode work best.

  2. Preview the result

    Confirm dimensions and colors look correct in the preview.

  3. Download the PNG

    Save the lossless PNG to your device for editing, design tools, or platforms that expect PNG.

Tips for converting BMP to PNG

Get clean results from your bitmaps.
  • 01

    Prefer standard 24-bit BMP

    Odd or proprietary bitmap variants may fail to decode; re-save as a common BMP if needed.

  • 02

    Expect different file sizes

    PNG compresses better than many raw BMPs, but large photos may still be bigger than JPG.

  • 03

    Need smaller photos?

    Use BMP to JPG when you want compressed photos for email or the web.

  • 04

    Keep PNG for further edits

    Lossless PNG is a better working format than re-saving JPEG repeatedly.

BMP to PNG tools compared

How this free converter differs from common upload-based options.

  • CloudConvert

    Many format pairs and cloud queues. Free tiers often include size or daily limits.

  • Convertio / similar

    Upload-based BMP to PNG with server processing; files leave your device.

  • Desktop paint / Photoshop

    Full editors that can export PNG. Heavier than a one-step BMP to PNG convert.

  • This BMP to PNG tool

    Live preview, browser-only convert BMP to PNG—no signup and no upload for processing.

Great for

When people need to convert BMP to PNG or turn a bitmap into PNG.

  • Legacy Windows exports

    Older scanners and apps still save BMP—re-encode to PNG for modern editing.

  • Design and editing

    Open bitmaps in tools that prefer PNG over BMP.

  • Lossless archives

    Keep a PNG copy for further edits without JPEG artifacts.

  • Compatibility

    Share images with apps or teammates that reject BMP uploads.

Why use this tool

A free, private way to convert BMP to PNG online.

  • 100% free

    No sign-ups, watermarks, or hidden conversion limits.

  • Privacy first

    Processing stays in your tab—useful for scans and personal images.

  • Lossless output

    PNG preserves decoded pixels without extra lossy encoding.

  • Works anywhere

    Desktop or mobile browser—no desktop app required to change BMP to PNG.

Technical details

How BMP to PNG conversion works in this tool.
Conversion path
BMP → browser Image decode → Canvas 2D draw → PNG via toDataURL.
Export format
PNG — lossless. Typical BMP sources are opaque; alpha is kept if the decoder provides it.
Limits
Max 15 MB per file; longest edge capped at 8192 px.
No server round-trip
Encoding stays on-device; suitable when you do not want to upload bitmaps to a cloud converter.

Sources & References

Authoritative references on the BMP and PNG formats, and browser-based image conversion.
  • “The BMP file format, also known as bitmap image file or device independent bitmap (DIB) file format or simply a bitmap, is a raster graphics image file format used to store bitmap digital images.”
    — Wikipedia — BMP file format

    BMP file format: BMP (bitmap) stores uncompressed or lightly compressed pixel data. This tool converts BMP files to PNG for lossless editing and wider app support. en.wikipedia.org/wiki/BMP_file_format

  • “The Canvas API provides a means for drawing graphics via JavaScript and the HTML canvas element.”
    — MDN Web Docs — Canvas API

    Canvas API (client-side rendering): BMP is decoded by the browser, drawn to Canvas 2D, and exported as PNG—no server upload for processing. developer.mozilla.org/en-US/docs/Web/API/Canvas_API

  • “Portable Network Graphics is a raster-graphics file format that supports lossless data compression.”
    — Wikipedia — Portable Network Graphics

    Portable Network Graphics (PNG): PNG is a lossless format with optional alpha. Converting bitmap to PNG gives a smaller, more editable file than many uncompressed BMPs while avoiding JPEG artifacts. en.wikipedia.org/wiki/Portable_Network_Graphics

  • “PNG supports lossless data compression, making it useful for storing graphics that need to be edited repeatedly without losing quality.”
    — W3C — PNG Specification

    W3C — PNG Specification: This converter exports a standard PNG so you can open the result in editors, design tools, and platforms that prefer PNG over BMP. w3.org/TR/PNG/

Frequently Asked Questions

Quick answers about this tool—open a question to read more.