JXL
jpegxl.app
Static & Animated WebP to JPEG XL

WebP to JXL Converter

Convert static and animated WebP images to JPEG XL (.jxl) with full alpha channel and multi-frame animation support.

Drop .WEBP files or a .ZIP archive here

Batch processing supported • Drag & drop files, paste from clipboard (Ctrl+V), or browse

Select Files or .ZIP

Conversion Settings

82

75–85 matches visually lossless JPEG

7

1 = Fast (Lightning) • 7 = Default (Squirrel)

Dedicated JPEG XL Format Converters

Choose a specialized tool for converting to or from JPEG XL (.jxl)

Convert Images to JXL

JPG to JXL

Lossless JPEG recompression & VarDCT

JPG → JXL
PNG to JXL

Static PNG & APNG with transparency

PNG → JXL
WebP to JXL

Static & animated WebP to JXL

WebP → JXL
AVIF to JXL

Static & animated AVIF to JXL

AVIF → JXL
GIF to JXL

Shrink animated GIFs by up to 80%

GIF → JXL

Convert JXL to Other Formats

JXL to JPG

Bit-exact JPEG reconstruction & lossy JPG

JXL → JPG
JXL to PNG

Lossless PNG & animated APNG output

JXL → PNG
JXL to WebP

Convert static & animated JXL to WebP

JXL → WebP
JXL to AVIF

Transcode JXL to AV1 Image Format

JXL → AVIF
JXL to GIF

Animated JXL to 256-color GIF

JXL → GIF

Why Convert WebP to JPEG XL?

While WebP is limited to 8-bit color and a maximum dimension of 16,383×16,383 pixels, JPEG XL offers superior high-fidelity compression, progressive responsive decoding, lossless Modular mode without chroma subsampling artifacts, and high dynamic range support.

100% Local Privacy

Powered by WebAssembly (`libjxl`). Your images are processed inside your browser tab and never uploaded to any cloud server.

Reversible JPEG Recompression

Losslessly transcode existing `.jpg` files into `.jxl` (~20% smaller) and reconstruct the exact bit-for-bit `.jpg` whenever needed.

Batch & ZIP Archive Workflow

Drop dozens of images or a `.zip` archive at once. Download converted files individually or bundled in a single `.zip`.

Animation & Alpha Support

Full support for multi-frame animations and alpha transparency across JXL, APNG, GIF, WebP, and AVIF.

Format Capabilities Matrix

FormatLosslessAlphaAnim
JPEG XLYes + JPGYesYes
AVIFYesYesYes
WebPYesYesYes
PNG / APNGOnlyYesAPNG
JPGNoNoNo
GIF256-col1-bitYes

Powered by libjxl (v0.7 WebAssembly) and client-side WebCodecs/WASM image pipelines.

Frequently Asked Questions

Does WebP to JXL support animated WebP files?

Yes! Animated WebP files are automatically split into timed frames and encoded into a multi-frame animated .jxl file.

Is WebP transparency preserved in JPEG XL?

Yes, full 8-bit alpha transparency from WebP is preserved in the output .jxl image.