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Kordu Tools
Image Tools Runs in browser Updated 31 Mar 2026

BMP to PNG Converter

Convert uncompressed BMP files to web-ready PNG with zero quality loss. Batch support, instant results — no upload required.

PNG is a lossless format — no quality setting needed. The output preserves every pixel of the original BMP.

Click to upload or drag and drop

BMP up to 50MB

Drop multiple files to convert them all at once
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How to use BMP to PNG Converter

  1. Open the BMP to PNG converter

    Visit the tool on kordu.tools — no account or installation needed.

  2. Upload your BMP file

    Click the upload area or drag and drop one or more BMP images. Batch conversion is supported.

  3. Automatic lossless conversion

    The tool converts your BMP to PNG automatically — no quality settings needed since PNG is lossless.

  4. Review file size comparison

    See how much smaller the PNG is compared to the original BMP.

  5. Download your PNG

    Click Download to save the PNG file. Batch files all download together.

BMP to PNG Converter FAQ

Will I lose quality converting BMP to PNG?
No. PNG uses lossless compression, so every pixel is preserved exactly. The file just gets much smaller through efficient compression.

How much smaller will the PNG be?
Typically 50–90% smaller than the original BMP, depending on image content. Images with large solid-color areas and simple graphics compress most efficiently.

Is transparency preserved?
Yes. PNG supports full alpha transparency. If your BMP has transparent areas, they are preserved in the PNG output.

Is my file uploaded to a server?
No. All conversion happens in your browser using the Canvas API. Your files never leave your device.

Why use PNG instead of JPG for BMP conversion?
PNG is lossless — it preserves every pixel without compression artefacts. JPG introduces quality loss. Choose PNG for screenshots, diagrams, text images, and logos. Use JPG for photographs where smaller file size matters more.

Can I batch convert multiple BMP files?
Yes. Drop multiple BMP files at once and download all PNGs in a single click.

Why are BMP files so large in the first place?
BMP (Bitmap) stores every pixel individually without any compression. A 1920×1080 BMP is roughly 6 MB; the equivalent PNG is usually under 1 MB.

What apps can open PNG files?
Virtually every image application — Photoshop, GIMP, Figma, Windows Photos, macOS Preview, web browsers, and all major social media platforms — supports PNG natively.

Can I use this on mobile?
Yes. The tool works on any modern mobile browser, including Safari on iPhone and Chrome on Android.

Background

Convert BMP (Bitmap) images to PNG format directly in your browser — no upload, no signup, no software installation required. BMP is an uncompressed Windows format where file sizes can reach tens of megabytes. PNG uses lossless compression to reduce those sizes by 50–90% while preserving every pixel of detail.

Unlike converting to JPG, there is zero quality loss: PNG stores image data without discarding any information. It also supports full alpha transparency, so any transparent areas in your BMP are preserved. This makes BMP to PNG ideal for screenshots, diagrams, logos, and images with text.

Batch conversion is fully supported — drop multiple BMP files at once and download all the PNGs in a single click. All processing happens client-side using the Canvas API.

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