BMP → JXL
Convert your BMP files to JXL for free, in your browser. No upload, no signup.
Drag your images or click
PNG · JPG · WebP · AVIF · JXL · GIF · BMP · PDF
⌘V paste⌘O open⌘S download
Why convert BMP to JXL?
BMP (Bitmap) — Uncompressed Microsoft format. Very large files, rarely used on the web. Often encountered in legacy Windows contexts.
JXL (JPEG XL) — Official JPEG successor. Superior compression, performant lossless mode, and reversible conversion from existing JPG files.
Converting BMP to JXL typically reduces file size while preserving a visual quality close to the original. This conversion significantly cuts file size — ideal for the web.
Quick comparison
BMP
Source formatBitmap
Released in 1986
Windows native
Best for: legacy Windows archives
- No compression
- Simple to read
- Huge files
- No modern use case
JXL
Target formatJPEG XL
Released in 2021
Safari 17+, Firefox behind a flag
Best for: archival, pro photography
- Ultra-efficient lossless
- Reversible from JPG
- Wide gamut
- Partial browser support
- Tooling still adopting
How it works
- 1
Drop your BMP
Drag the file or paste it (⌘V).
- 2
Adjust the settings
Optional quality and max width.
- 3
Download the JXL
Local, instant conversion.
Frequently asked questions
Is BMP → JXL conversion free?+
Yes, totally and without limit. PixelCrush requires no signup or payment — you can convert as many BMP images to JXL as you wish.
Are my files uploaded to a server?+
No. All conversion happens in your browser via WebAssembly. No image leaves your device, ensuring privacy and speed.
Can I convert multiple BMP files to JXL at once?+
Yes, batch processing is native. Drop multiple files or a folder, adjust the settings, then download everything as a .zip in one click.
Is JXL well supported by browsers?+
Safari 17+, Firefox behind a flag For a public site, AVIF and WebP are the safest choices.
Is there a file size limit?+
No imposed limit. The only constraint is your device's memory, but files of several MB pass without difficulty.