How to Convert BMP to PNG on iPhone
BMP is Windows' old uncompressed bitmap format. Drop your BMP file into the converter below and it becomes a PNG straight away, right on your iPhone – nothing is uploaded.
Drop BMP files here or browse
Accepts HEIC, WebP, PNG, JPG, BMP, GIF and SVG · multiple files · nothing is uploaded
Converted on your device. Your photos never leave your browser.
Step by step: Convert BMP to PNG on iPhone
- 1
Open this page in Safari (or Chrome) on your iPhone or iPad.
- 2
Tap the box above. Choose Photo Library to pick from Photos, or Choose File to browse the Files app (iCloud Drive, On My iPhone, Downloads).
- 3
The PNG is made as soon as the file is added.
- 4
Tap Download. Safari saves the file to Files › Downloads (tap the download arrow in the address bar to find it). To add an image to Photos, open it in Files, tap Share, then Save Image.
What changes when you convert BMP to PNG
- BMP files are uncompressed, so the PNG will usually be a fraction of the size.
About BMP and PNG
- BMP is Windows' old uncompressed bitmap format. Files are very large for their size in pixels, and most websites, chat apps and phones won't accept them.
- PNG is a lossless format: it keeps every pixel exactly and supports full transparency. That makes it ideal for screenshots, logos and graphics, but photos saved as PNG are often several times bigger than the same photo as a JPG.
Tips for iPhone
- There's no app to install from the App Store – the tool runs inside Safari, and the file never leaves your iPhone.
BMP vs PNG
| BMP | PNG | |
|---|---|---|
| Compression | Usually none | Lossless |
| Transparency | Rarely supported | Yes, full alpha channel |
| Animation | No | No (APNG is rarely supported by editors) |
| Best for | Legacy Windows software | Screenshots, logos, graphics with text or transparency |
| Support | Windows; limited elsewhere | Universal |
Frequently asked questions
Will I lose quality converting BMP to PNG?
No further quality is lost – PNG is lossless. The PNG looks exactly like the BMP you put in.
Can I convert several BMP files at once?
Yes. Add as many as you like; each converts on its own, and Download all saves them in one ZIP.
Are my photos uploaded to a server?
No. The conversion runs in your browser using your device's own processor, so your photos never leave your device. You can even disconnect from the internet once the page has loaded.
Where does the converted file go on my iPhone?
Tap Download. Safari saves the file to Files › Downloads (tap the download arrow in the address bar to find it). To add an image to Photos, open it in Files, tap Share, then Save Image.
Need more options? Open the full Image Converter tool →