JPEG XL Converter
Convert JPG, PNG, or WebP images to JPEG XL (JXL), or turn JXL files into JPG and PNG. Adjust quality, choose lossless output, and convert batches free online.
Add files to get started
Convert JPG, PNG, or WebP images to JPEG XL (JXL), or turn JXL files into JPG and PNG. Adjust quality, choose lossless output, and convert batches free online.
Add files to get started
Updated
JPEG XL, also called JXL, is a modern image format for photos and graphics. It supports lossy and lossless compression, transparency, high bit depth, and HDR. Use this converter to create JXL files from JPG, PNG, WebP, or other supported images, with one set of output options for a whole batch.
Already have a JXL that a client, CMS, or image editor will not open? Convert it to a more widely accepted format with JXL to JPG or JXL to PNG.
WebP, AVIF, and JPEG XL are modern image formats designed to make images smaller while maintaining visual quality. They differ in compression efficiency, browser support, and features. In our benchmark of 12 product photos, JPEG XL kept nearly as much detail as AVIF under the same size limit, and needed 18% fewer bytes than an optimized JPEG for the same detail.
| Format | Choose it for | Main benefit and tradeoff |
|---|---|---|
| WebP | Everyday website photos, logos, and images with transparent backgrounds. | Good compression and broad browser support. AVIF or JPEG XL often produce smaller photo files. |
| AVIF | Photo-heavy websites where reducing download size is the main goal. | Often compresses photos better than WebP at similar visual quality. Encoding takes longer. |
| JPEG XL | High-resolution website photos and image libraries where every pixel must be preserved. | Often compresses lossless images better than AVIF. Supports progressive loading, so visitors can see a preview before the download finishes in compatible browsers. Browser support is more limited, so keep a fallback. |
AVIF and JPEG XL also support HDR for a wider range of brightness on compatible displays. Compare a sample at the same dimensions and similar visual quality. No format is smallest for every image, and quality numbers are not equivalent across formats.
Chrome and Edge support JPEG XL decoding from version 155, and Safari supports it from version 17. Keep a JPEG, WebP, or AVIF fallback for older browsers and other clients.
Check that your editor, CMS, and CDN also accept .jxl files before converting a recurring batch.
Encoding effort controls processing time and possible file-size savings. A higher effort does not improve visual quality. FastConvert creates a new JXL image, including when the source is JPEG.
For recurring product-photo deliveries, save the dimensions, quality, and output format as a recipe with a free account. Paid plans add larger batches, more recipes, and delivery to Google Drive or Dropbox after you start each batch. Keep a separate fallback recipe for the same crop and dimensions.
Upload a JXL image and a JPEG fallback to your website. Use the picture element below so each browser loads the format it supports. Replace the example file paths and dimensions with your own.
<picture>
<source srcset="hero.jxl" type="image/jxl" />
<img src="hero.jpg" width="1200" height="800" alt="Product on a desk" />
</picture>Use the same crop and dimensions for both files. The example uses 1200 by 800 pixels. The width and height reserve space while the image loads.
Your server or CDN should serve JXL files with the image/jxl MIME type. If your CMS removes the picture source, use the JPEG fallback on its own.
Keep a crawlable JPEG fallback in the img src attribute for search engines, as recommended in the Google image guidelines.
Choose from the available formats below to convert your files to JXL.
Convert JPEG to JXL in batches online. Apply consistent dimensions and lossless or lossy settings across the batch for free. No sign-up or watermark.
Convert JPG to JXL in batches online. Apply consistent dimensions and lossless or lossy settings across the batch for free. No sign-up or watermark.
Convert PNG to JXL in batches online. Apply consistent dimensions and lossless or lossy settings across the batch for free. No sign-up or watermark.
Convert WEBP to JXL in batches online. Apply consistent dimensions and lossless or lossy settings across the batch for free. No sign-up or watermark.
Convert AVIF to JXL in batches online. Apply consistent dimensions and lossless or lossy settings across the batch for free. No sign-up or watermark.
Convert GIF to JXL in batches online. Apply consistent dimensions and lossless or lossy settings across the batch for free. No sign-up or watermark.
Convert HEIC to JXL in batches online. Apply consistent dimensions and lossless or lossy settings across the batch for free. No sign-up or watermark.
Choose from the available formats below to convert your files from JXL.
Convert JXL to AVIF in batches online. Apply consistent dimensions and lossless or lossy settings across the batch for free. No sign-up or watermark.
Convert JXL to JPEG in batches online. Apply consistent dimensions and quality settings across the batch for free. No sign-up or watermark.
Convert JXL (JPEG XL) images to PNG online so any editor or app can open them. Keep transparency with lossless PNG output and convert a batch free, no sign-up.
Convert JXL to WEBP in batches online. Apply consistent dimensions and lossless or lossy settings across the batch for free. No sign-up or watermark.
Convert JXL to JP2 in batches online. Apply consistent dimensions and lossless or lossy settings across the batch for free. No sign-up or watermark.
Convert JXL to HEIC in batches online. Apply consistent dimensions and lossless or lossy settings across the batch for free. No sign-up or watermark.
Your current plan is Free.
Basic unlocks 20 files per batch, 30 MB per file, and 5 minutes of processing time. Compare plans