XL Converter is an easy-to-use image converter for modern formats.
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Support the development and get rewards on Patreon.
Downloads
Version 1.1.0 / Changelog
Windows
Windows 10 or later
Available on Scoop as extras/xl-converter
Linux
Ubuntu 22.04 or later
fuse required
Installer: Unpack then run./install.sh
Features
Batch convert to JPEG XL, AVIF, WebP, and JPEG with parallel encoding.
JPEGLI
Encode fully-compatible JPEG images with up to 35% better compression ratio.
JPEG XL and AVIF
Achieve high quality at a small file size with JPEG XL and AVIF.
JPEG -> JPEG XL -> JPEG
Compress JPEG images losslessly to save 20% of space then reverse the process when needed.
User-friendly
Just drag ‘n drop your files and convert.
Resources
Docs
Learn how to best use XL Converter.
Tech Support
Tech support is realized via Patreon.
Donate
Support the development.
Source
Licensed under GPLv3.
Widely Used
Featured on the supported_software list in the official JPEG XL repository.
Listed on jpegxl.info
Used by hundreds of people.
Full Feature List
- Conversion:
- Batch conversion to JPEG XL, AVIF, WebP, JPEG and PNG.
- Lossless JPEG Transcoding and Reconstruction.
- Fast parallel encoding.
- Top quality JPEG encoding with JPEGLI.
- Top quality AVIF encoding with AOM AV1.
- Keep folder structure.
- Scaling to resolution, shorter (or longer) side.
- Metadata handling with ExifTool.
- Novel Lossless JPEG Transcoding features:
- Verify: Validates checksum and reconstruction data.
- Normalize: Allows for transcoding problematic JPEG images. Rewrites image structure without affecting quality or metadata.
- The new AVIF encoder: SVT-AV1-PSY.
- Copying and preserving source image if the result is larger.
- Smallest Lossless (OxiPNG vs WebP vs JPEG XL).
- User Experience:
- Clean interface.
- Drag ‘n drop.
- Dark theme.
- Good defaults.
- Lightweight Qt-based GUI.
- Quality of Life:
- Privacy-focused.
- No internet connection required.
- No ads, no telemetry, no annoyances.