w3c/png Issues

Last updated Apr 3, 2025, 5:56:26 AM UTC.

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Issue Title Within SLO On maintainers' plates for Time left Time past SLO
#5 pHYs is metric-only ❌
#6 AverageLaneFilter ❌
#14 Spatial referencing of a PNG image; pHYs unsuitable ❌
#15 Textual chunk which is not `safe to copy` ❌
#16 Image tiling chunk ❌
#21 Interpolation preference ❌
#24 Alternative palettes ❌
#25 Internal IDs for fragment references ❌
#39 Consider using Zstandard and/or LZ4 instead of Deflate ❌
#40 Consider making the Adler32 check optional during decompression ❌
#41 Suggestion: regular restart markers ❌
#45 Formalize Apple's CgBI chunk ❌
#54 Multithreading PNG decoding, "parallel" PNG's ❌
#55 Much faster standard PNG writing ❌
#60 PNG Restart Marker specification ❌
#255 Consider improvements to progressive loading ❌
#308 Link to tables and figures by name ❌
#311 Some tone mapping requires the average luminance between frames ❌
#312 Narrow range and `cICP` ❌
#319 Tone-mapping should be stable when mDCv and cLLi are static ❌
#320 Handling invalid, unknown ancillary chunks ❌
#344 Flag for use of artistic controls ❌
#347 Should the spec still talk about frame buffers? ❌
#357 10 bit per channel proposal ❌
#366 Liaison letter from ISO TC 42/WG 23 on Gain Maps ❌
#380 Proposal: gain maps for PNG ❌
#390 Add PNG dWLm (Diffuse white luminance metadata ) chunk to conform to ISO 22028-5 ❌
#405 Consistent terminology ❌
#426 New filter method, optimised for 10,12,16 bits/component image data? ❌
#467 Join chunk ordering rules ❌
#472 Added table with 16bit full and narrow range values ❌
#478 iCCP chunk requirements for GRAY and RGB ❌
#493 Adding generic image-type data chunk(s) ❌
#494 Add iEXt chunk ❌
#495 Add iEId chunk ❌
#505 Filter suggestion improvement ❌
#510 The example in Chapter 5.3 is mislabeled. The chunk "cHNk" should be marked as public, but it was mistakenly marked as private. ❌