JPEG XL Converter - Convert JXL Images Online Free
Convert images to JPEG XL (JXL) and back. Free, private, no signup.
Tool Interface
JPEG XL Converter
Convert images to JPEG XL and back. Free, private, no signup. Files never leave your browser.
Drag and drop images here
or
PNG, JPEG, WebP, GIF, BMP
Conversion Settings
Files
Results
JPEG XL delivers 30 to 50 percent smaller files than JPEG at similar quality. All processing happens locally in your browser.
How to use
- Choose a mode: pick "Convert to JXL" to compress images, or "Convert from JXL" to turn JXL files back into PNG, JPEG, or WebP.
- Add your images: drag and drop files into the box above, or click Choose Files to browse.
- Adjust settings: set quality and effort for JXL output, or pick the output format when converting from JXL.
- Convert and download: click Convert Now, then download each file or grab them all as a ZIP.
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About This Tool
JPEG XL Converter - Convert Images to and from JXL
JPEG XL (JXL) is the next-generation image format offering 30 to 50 percent smaller files than JPEG at the same quality, with support for HDR, wide color gamut, and lossless compression. The Trencada JPEG XL Converter lets you convert PNG, JPEG, WebP, GIF, and BMP images to JXL, and convert JXL files back to PNG, JPEG, or WebP. All processing happens in your browser - your images never leave your device.
How to Convert Images to JPEG XL
- Choose Convert to JXL mode and drop your images into the upload area.
- Adjust quality and encoding effort to balance file size and speed.
- Click Convert Now.
- Download individual JXL files or all of them as a ZIP.
How to Convert JXL Back to Other Formats
- Switch to Convert from JXL mode.
- Drop your JXL files into the upload area.
- Choose PNG, JPEG, or WebP as the output format.
- Click Convert Now and download your images.
Key Features
- Convert PNG, JPEG, WebP, GIF, and BMP to JPEG XL.
- Convert JXL back to PNG, JPEG, or WebP.
- Adjustable quality and encoding effort settings.
- Batch convert multiple images with ZIP download.
- Side-by-side file size comparison with savings percentage.
- 100 percent private - images never leave your browser.
Why Use the Trencada JPEG XL Converter
Browser support for JPEG XL is now landing across Chrome, Firefox, and Safari, making it the format to watch. This converter gives you early access with no software to install and no account needed. Files are processed locally with the same engine used by professional tools.
Frequently Asked Questions
What is JPEG XL?
JPEG XL (JXL) is a modern image format designed as the successor to JPEG. It delivers significantly smaller file sizes at the same visual quality, supports HDR and wide color gamut, and can losslessly recompress existing JPEG files to about 20 percent smaller.
Which browsers support JPEG XL?
Safari has supported JXL since version 17. Chrome added native support in version 155 and Firefox in version 157, both in late 2026. This converter works in any modern browser regardless of native support.
How do I convert a JXL file to PNG?
Switch to Convert from JXL mode, drop your JXL file in, select PNG as the output format, and click Convert Now.
Is converting to JXL lossless?
It can be. Set quality to 100 for lossless encoding that preserves every pixel. Lower quality settings give much smaller files with visually near-identical results.
Are my images uploaded anywhere?
No. All conversion happens locally in your browser using WebAssembly. Your images never leave your device.
Is this JPEG XL converter free?
Yes, completely free with no limits, no signup, and no watermark.