Free webp to jpg
Image MIME Reference
CLIP

Clip Studio Paint Document

image/vnd.clip
VS

JPEG XL

image/jxl
JXL

A complete technical comparison of Clip Studio Paint Document and JPEG XL — covering compression, feature support, browser compatibility, magic bytes, and when to choose each format.

JXL wins on browser support

Feature Support

Feature CLIP JXL
Transparency (Alpha) Yes Yes
Animation Support Yes Yes
Progressive Loading ✕ No Yes
HDR Support ✕ No Yes
EXIF Metadata ✕ No Yes
ICC Color Profile Yes Yes
Clip Studio Paint Document
image/vnd.clip
Extension
.clip.lip
Container SQLite 3 Database
Compression Proprietary Blob Compression (within SQLite)
Algorithm
Proprietary (Celsys Blob Encoding)
Color Depth 8-bit (Monochrome), 8-bit (Grayscale), 24-bit (RGB), 32-bit (CMYK)
Developed by Celsys, Inc.
Released 2012
Magic Bytes
53 51 4C 69 74 65 20 66 6F 72 6D 61 74 20 33 00
Full CLIP reference →
JPEG XL
image/jxl
Extension
.jxl
Container ISOBMFF / JPEG XL Codestream
Compression Lossy (VarDCT) / Lossless (Modular)
Algorithm
VarDCT (Variable block-size DCT)Modular (Predictive coding for lossless)
Color Depth 8-bit, 10-bit, 12-bit, 16-bit, 32-bit (Float)
Developed by Joint Photographic Experts Group (JPEG)
Released 2021
Magic Bytes
FF 0A (Codestream) / 00 00 00 0C 4A 58 4C 20 0D 0A 87 0A (Container)
Full JXL reference →

Browser Support Comparison

Browser CLIP JXL
Chrome Chrome
Firefox Firefox
Safari Safari
✓ 17+
Edge Edge
IE IE (Legacy)
CLIP

CLIP Strengths

  • SQLite backend provides incredibly robust data integrity, preventing catastrophic project loss if the application crashes during a save
  • Allows for massive multi-page comic projects and animation timelines to be handled efficiently without loading the entire project into RAM simultaneously
  • Industry standard for manga, anime, and webtoon professional workflows
Limitations
  • Heavily closed-source and proprietary, meaning no third-party applications (like ImageMagick or GIMP) can parse or render the files
  • Standard MIME identification tools will misidentify the file as a generic SQLite database, causing friction in automated file-upload validations
  • Zero web browser support
JXL

JXL Strengths

  • Capable of losslessly recompressing legacy JPEG files, saving ~20% space while retaining perfect byte-for-byte restorability
  • Highly superior progressive decoding (Saliency-driven), allowing recognizable images to load extremely fast on slow connections
  • Outperforms WebP and competes favorably with AVIF, especially at high-fidelity settings and for complex textures/photography
  • Royalty-free with an open-source reference implementation (libjxl)
Limitations
  • Google's removal of JXL support from Chrome severely hindered its adoption as a universal web standard
  • Lack of hardware decoding chips compared to video-derived codecs like AVIF (AV1)
  • File parsing logic is complex due to the split between raw codestreams and ISOBMFF containers

When to choose which format

CLIP
Use CLIP when…
  • Digital Illustration and Concept Art
  • Manga and Webtoon Production
  • 2D Frame-by-Frame Animation
  • High-Resolution Print Production
JXL
Use JXL when…
  • High-End Web Delivery (via Safari/Polyfills)
  • HDR Photography
  • Legacy JPEG Archiving
  • Digital Art & Image Storage
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