How to convert BMP to PNG
- Click Choose files or drop your BMP images into the box above — up to 10 at a time on the free plan.
- Optionally resize if you like, or keep the original size.
- Conversion starts right away. Download each PNG file, or click Download all to get them as one ZIP.
BMP vs PNG
| BMP | PNG | |
|---|---|---|
| Compression | Uncompressed | Lossless |
| Transparency | No | Yes |
| Animation | No | No |
| Colors | Usually 24-bit color, stored uncompressed | Up to 16 bits per channel, full alpha |
| File size (photos) | Very large | Large for photos, small for graphics |
| Opens on | Windows and most image viewers; rarely accepted on the web | Every browser, phone and computer |
| Best for | Old Windows software, embedded devices and tools that need raw pixels | Screenshots, logos, graphics with text and anything that needs a transparent background |
About BMP and PNG
What is BMP?
BMP is an old Windows format that usually stores every pixel uncompressed. A photo saved as BMP can be 10–20 times larger than the same JPG. Today it is mostly needed for legacy software, some printers, industrial machines and microcontroller displays.
- Simple, uncompressed and lossless
- Readable by old and embedded software
- Enormous files
- No useful transparency or metadata
- Not accepted by most websites
What is PNG?
PNG keeps every pixel exactly as it is (lossless compression) and supports smooth, partial transparency. That makes it ideal for screenshots, logos, UI graphics and images with text, but photos saved as PNG are usually 5–10 times bigger than the same photo as JPG.
- Lossless: no quality loss, ever
- Full transparency (alpha channel)
- Crisp text and sharp edges
- Photos are very large
- No animation (except the rarely used APNG variant)
Why GlideConvert?
- Private by design. Your files are converted on your own device by your browser — they are never uploaded to a server. That keeps them private, avoids upload waits and means there is no queue.
- Fast. Images convert in a fraction of a second; video uses your device’s hardware encoder.
- Free. No sign-up, no watermark. 10 images, 5 audio files or one video at a time — Pro lifts the limits and removes ads.
Frequently asked questions
Will converting BMP to PNG reduce quality?
No. PNG is lossless, so the result looks exactly like your BMP.
Will the PNG file be smaller than the BMP?
Usually yes — PNG compresses photos more efficiently than BMP. The exact saving depends on the image and the quality you choose.
Can I convert several BMP images at once?
Yes. The free plan handles 10 images at a time, and you can download everything as a single ZIP. Pro removes the batch limit, converts files in parallel and supports files up to 4 GB.
Are my files uploaded to a server?
No. GlideConvert runs entirely in your browser: images are processed with the browser’s built-in codecs and WebAssembly, video and audio with hardware-accelerated WebCodecs (or a WebAssembly build of FFmpeg for older formats). Nothing is sent anywhere — you can even disconnect from the internet once the page has loaded.
Does it work on iPhone, Android, Mac and Windows?
Yes. It works in any up-to-date browser — Chrome, Edge, Safari, Firefox or Samsung Internet — on phones, tablets and computers, with nothing to install. On phones, extremely large images may be scaled down to fit within the browser’s memory limit; you will see a note if that happens.