Compress JXL
Shrink JXL (JPEG XL) files by lowering quality or dimensions.
Drop JXL files here or click to browse
Processing happens on your device. Nothing is uploaded.
100% Private
Files are processed locally in your browser. They never touch our servers.
Smart Defaults
Sensible settings are applied automatically. Fine tune them only if you want to.
Batch Processing
Drop multiple images at once and download everything together as a ZIP.
How to use Compress JXL
- Drop your images onto the page, or click to pick them from your device
- Use the default settings, or adjust the options for your file type and target result
- Download the finished images one by one, or save the full batch as a ZIP
What Compress JXL is for
Use this tool to shrink a JPEG XL file while keeping the .jxl format. It lowers the quality and, optionally, the dimensions, re-encoding the file locally in your browser.
- Shrink a JPEG XL file by lowering quality or reducing dimensions.
- Make a large .jxl small enough to store or send.
- Keep the JXL format while trimming the file size.
- Resize and recompress a batch of JXL files at once.
Best practices for better results
Image optimization works best when you choose the right balance between file size, visual quality, dimensions, format compatibility and privacy. These tips help you get a cleaner result.
- Lower quality first; drop dimensions only if you still need it smaller.
- Moderate quality keeps the image looking great at a smaller size.
- To switch formats instead, use the JXL to JPG, PNG or WebP tools.
- Keep the original JXL if you might need full quality later.
What happens to your images?
When you choose a file, your browser reads it locally and creates the processed version on your own device. CompressImage.ca does not receive the original image or the finished file.
That local-first approach is useful for personal photos, client work, screenshots, documents, product images and other files you do not want to upload to a third-party server.
When to use another tool
The best tool depends on what you are trying to fix. Compression reduces file size, resizing changes dimensions, conversion changes format, cropping changes framing, and metadata removal cleans hidden information from the file.
| Goal | Best tool |
|---|---|
| Make a file smaller | Compress Image |
| Hit an exact file size | Compress Image to Size |
| Change image dimensions | Resize Image |
| Create WebP files for websites | Convert to WebP |
| Convert iPhone photos | HEIC to JPG |
| Remove hidden photo data | Remove EXIF |
Related image tools
These tools solve similar image optimization problems and work the same way: locally in your browser, with no required upload.
- JFIF to JPG: Rename JFIF photos to standard JPG files
- JPEG to JPG: Save JPEG files with the standard .jpg extension
- SVG to JPG: Rasterise SVG vector files into JPG images
- GIF to JPG: Save the first frame of a GIF as a JPG
Compress JXL FAQ
How do I compress a JXL file?
Lower the quality setting, and optionally set a max width, then download the smaller JPEG XL. Everything runs locally in your browser.
Will compressing reduce quality?
Lower quality settings trade a little visual quality for a smaller file. Resizing lowers resolution. At moderate settings the image still looks great.
Does it stay a JXL file?
Yes. The output is still a JPEG XL file. To switch formats instead, use the JXL to JPG, PNG or WebP converters.
Is my file uploaded?
No. The JPEG XL is decoded, re-encoded and saved entirely in your browser, so your file never leaves your device.