Multimedia:Back-end
Supported formats
Related bugs:
- bugzilla:17505: No High Dynamic Range Image (HDRI) file formats allowed on Commons
- bugzilla:15538: Problem uploading compressed Dia file
- bugzilla:4947: SVGZ (gzipped SVG) support
- bugzilla:3664: MetaPost scalable vector graphics support
- Not an upload format per se
- bugzilla:17858: Provide EPUB sanitizer
- bugzilla:17959: Inline rendering/thumbnailing for Gimp XCF images
- bugzilla:19153: Enable dng uploads on Commons
- bugzilla:20252: Support for WAV and AIFF by converting files to FLAC automatically.
File checks
Related bugs:
- bugzilla:10847: RAR concatenation in images
- bugzilla:18803: JPEG 2000 image files are not supported, but can be uploaded non-functionally with .jpg extension
- bugzilla:3675: PATCH: detect which mime types can be recognized reliably
- bugzilla:11142: blacklist extension handling is broken
- bugzilla:15874: Solution for permission to upload agains file type check
- bugzilla:18372: File upload error messages don't properly take $wgFileBlacklist into account
- bugzilla:18923: uploadcorrupt error message is vague and confusing
- bugzilla:7645: Validate SVG content
Internal file management
Related bugs:
- bugzilla:4421: Image file extension should not be part of the name
- bugzilla:3829: Rework file uploads for better caching, mirroring
- bugzilla:9018: Temporary upload stash not cleared when uploads cancelled
- bugzilla:15430 Uploads sometimes are incomplete: file is there, but image page is missing
- bugzilla:16751: Support multiple file uploads via Special:Upload (backend/infrastructure)
- bugzilla:20811: Blank submit page when uploading a djvu file on Commons or Wikipedia
- bugzilla:6481: Image upload does not appear in the upload log
- bugzilla:9248: Give MIME on links to image pages + Switch to disable image linking
- bugzilla:13196: Screen all previously-uploaded SVG files for invalid structure
- bugzilla:17560: Half-broken deletion moved image files to deletion archive without updating DB
- bugzilla:17577: Images can't have far future expires
- bugzilla:19751: Image undelete inadequately checks filesystem status before deleting archive info from DB (data loss)
Hashes
Related bugs:
- bugzilla:17057: Images with wrong SHA1
- bugzilla:17070: Files with hash of an old version
Rendering
Related bugs:
- bugzilla:234: PNG thumbnails change binary transparency to alpha transparency, causing IE6 problems
- bugzilla:2888: Broken thumbnails not being generated
- bugzilla:9497: Thumbnails of large PNGs are not generated
- bugzilla:13493: Can't create thumbnail of images with a peculiar aspect ratio
- bugzilla:11045: Transparent PNGs resized with GD display with ugly background in IE 6
- bugzilla:11822: rescaling of animated gif increase size
- bugzilla:13252: Resizing of Some GIFs Rendering Poorly; Setting Needs Changing?
- bugzilla:15488: Image thumbnail generator adding large amounts of artefacts
- bugzilla:16140: images are resized using incorrect color space
- bugzilla:16416: SVG rendering maximum should base on area, not largest size?
- bugzilla:16785: Switch in bicubic image scaling for client-side thumbnailing in Internet Explorer 7
- bugzilla:18014: Thumbnailing produces much worse results for PNGs than JPG, but PNG is the only real option for serious restoration
- bugzilla:18127: Mediawiki accepts to create thumbnails with the wrong extension
- bugzilla:19960: Preserve color profile information for thumbs (ImageMagick update)
SVG rendering
- bugzilla:8901: SVG rasterisation on Wikimedia sites (tracking)
- bugzilla:19224: SVG rendering: problems with paths beyond page extend
- bugzilla:3537: SVGs fail to render silently if they contain an <image /> element
- bugzilla:3593: SVG client side rendering
- bugzilla:5792: SVG→PNG and baseline-shift
- bugzilla:5933: Incorrect scaling of .svg->.png images
- bugzilla:7914: Strange behaviour with SVG figure
- bugzilla:8566: Thumbnail rendering of SVGs broken
- bugzilla:9832: SVG thumbnail is cropped when displayed at natural size
- bugzilla:10501: SVG: installed fonts not being rendered
- bugzilla:13387: SVG: Missing implementation for textLength
- bugzilla:13494: SVG font scaling bug ("%" and "em" misconverted to "px")
- bugzilla:13495: SVG text-decoration (including underlining) doesn't render
- bugzilla:16284: Support Linux Libertine Font for SVG rendering
- bugzilla:17187: SVG to PNG conversion broken for text
- bugzilla:17845: DejaVu Sans font renders incorrectly in SVG thumbnails
- bugzilla:18463: SVG thumbnailing issues - part of the image not rendered
- bugzilla:18900: probably bug in SVG→PNG rendering mechanism
- bugzilla:19053: Some arrows direction in SVG are wrongly rendered
- bugzilla:19224: SVG rendering: problems with paths beyond page extend
- bugzilla:19633: Scale up thumbnails of small SVG
- ? bugzilla:21474: Updating SVG with image of same optimal dimensions does not update png render
- ? bugzilla:16368: [SVG Rendering] Worsening of font rendering quality