JXL to SVG Converter

Encoding: the JXL uses lossy VarDCT or lossless modular coding; existing JPEGs can be repacked without loss; SVG uses XML text describing paths, shapes and text, sometimes gzipped as .svgz, and the download is an SVG traced into vector paths (or, if you prefer, the pixels embedded in an SVG wrapper).

Bit depth: 8 to 16 bits per channel, or floating point in the JXL; SVG allows not fixed: coordinates and colours are continuous values, and the SVG written here has vector paths with flat colours. High-bit-depth JPEG XL files are reduced to 8 bits per channel.

Colour: sRGB, Display P3, linear and other spaces described in the codestream in the JXL; SVG supports sRGB by default, other spaces through CSS colour functions, written here as flat colour regions.

Transparency: the JXL stores it as an extra channel in the codestream; the SVG keeps it as opacity on any element, with anti-aliased edges.

Animation: frames inside a single codestream; the SVG holds one image, so only the first frame is converted.

Metadata: the JXL can carry EXIF and XMP boxes in the container form, often stripped by encoders; SVG can carry title, description and RDF metadata elements, but nothing is copied across.

JPEG XL is a next-generation format designed to replace JPEG. It compresses better than JPEG and WebP, supports lossless, HDR and progressive decoding, and can losslessly repack existing JPEGs.

A JPEG XL file is either a bare codestream starting with FF 0A or an ISO base media container whose 'jxlc' box holds the codestream. A recompressed JPEG keeps a 'jbrd' box that lets the original JPEG bytes be rebuilt exactly.

JXL files usually come from image editors, archival pipelines and lossless JPEG recompression.

SVG describes shapes, paths and text as XML instead of pixels, so it stays crisp at any size. It is the standard for logos, icons and illustrations on the web.

An SVG is an XML document: a root <svg> element with a viewBox, then paths, shapes, text, gradients and filters. It can also embed raster images and, dangerously, scripts, which is why untrusted SVG is sanitized before rendering here.

SVG is the better choice for logos, icons and illustrations, while JXL suits archiving and future-proof high quality storage.

SVG strengths: Infinitely scalable and sharp; Tiny files for logos and icons; Editable as text and styleable with CSS. Drawbacks to weigh: Not suitable for photographs; Can contain scripts, so untrusted SVG must be sanitized; Many apps and social sites will not accept it.