JXL Viewer
Open JXL files in any browser, see the image and save a PNG copy.
Drop a JXL file 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 JXL Viewer
- 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 JXL Viewer is for
Use this tool to open and view a JPEG XL (.jxl) file on any device, even browsers that cannot display JXL natively. It decodes the file in your browser, shows the image and lets you save a PNG copy.
- Open and view a .jxl file on any device, including ones that cannot normally.
- Check a JPEG XL image and its dimensions before converting.
- Preview a JXL someone sent you without installing software.
- Save a PNG copy of a JXL you only needed to look at.
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.
- Use the viewer to confirm a file is really JPEG XL before converting a batch.
- Save a PNG copy from the viewer when you want to keep what you opened.
- For many files, the converters are faster than viewing one at a time.
- The viewer works in any browser, even where JXL is unsupported.
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
JXL Viewer FAQ
What is a JXL file?
JXL is the extension for JPEG XL, a next-generation image format offering strong compression, lossless modes and HDR. Browser and app support is still limited, which is why files can be hard to open.
How do I open a JXL file?
Drop it into this viewer to see it right in your browser, with nothing to install. To keep a widely supported copy, save it as PNG or convert it to JPG.
Why will my computer not open JXL files?
Most browsers and image viewers have not added JPEG XL support yet, and some that did later removed it. This viewer decodes the file in your browser so it works anywhere.
Is my file uploaded when I view it?
No. The JPEG XL file is decoded entirely in your browser, so it never leaves your device, which makes the viewer safe for private images.