Created
February 16, 2025 17:06
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Generate a markdown table of supported image file formats in iOS
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| let sourceUTIs = CGImageSourceCopyTypeIdentifiers() as? [String] ?? [] | |
| let destinationUTIs = CGImageDestinationCopyTypeIdentifiers() as? [String] ?? [] | |
| var markdownTable = """ | |
| | UTI | File Extensions | Source | Destination | Notes | | |
| | - | - | - | - | - | | |
| """ | |
| let allUTIs = Set(sourceUTIs).union(Set(destinationUTIs)) | |
| func fileExtension(for uti: String) -> String { | |
| if let type = UTType(uti), let extensions = type.tags[.filenameExtension] { | |
| return extensions.map { "`\($0)`" }.joined(separator: ", ") | |
| } | |
| return "N/A" | |
| } | |
| let sortedUTIs = allUTIs.sorted { uti1, uti2 in | |
| let isPublic1 = uti1.hasPrefix("public.") | |
| let isPublic2 = uti2.hasPrefix("public.") | |
| let inSource1 = sourceUTIs.contains(uti1) | |
| let inDest1 = destinationUTIs.contains(uti1) | |
| let inSource2 = sourceUTIs.contains(uti2) | |
| let inDest2 = destinationUTIs.contains(uti2) | |
| let both1 = inSource1 && inDest1 | |
| let both2 = inSource2 && inDest2 | |
| if both1 != both2 { | |
| return both1 | |
| } | |
| if isPublic1 != isPublic2 { | |
| return isPublic1 | |
| } | |
| return uti1 < uti2 | |
| } | |
| for uti in sortedUTIs { | |
| let ext = fileExtension(for: uti) | |
| let sourceCheck = sourceUTIs.contains(uti) ? "✅" : "❌" | |
| let destinationCheck = destinationUTIs.contains(uti) ? "✅" : "❌" | |
| markdownTable += "\n| `\(uti)` | \(ext) | \(sourceCheck) | \(destinationCheck) | |" | |
| } | |
| print(markdownTable) |
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public.heicheicpublic.heicsheicspublic.jpegjpeg,jpg,jpepublic.jpeg-2000jp2,jpf,jpx,j2k,j2cpublic.pbmpublic.pngpngpublic.pvrpublic.tifftiff,tifcom.adobe.photoshop-imagepsdcom.apple.atxcom.apple.icnsicnscom.compuserve.gifgifcom.ilm.openexr-imageexrcom.microsoft.bmpbmp,dibcom.microsoft.ddscom.microsoft.icoicocom.truevision.tga-imagetgaorg.khronos.astcorg.khronos.ktxorg.khronos.ktx2public.avciavcipublic.avifavifpublic.avispublic.heifheif,hifpublic.jpeg-xljxlpublic.mpo-imagempopublic.radiancecom.adobe.pdfpdfcom.adobe.raw-imagedngcom.canon.cr2-raw-imagecr2com.canon.cr3-raw-imagecr3com.canon.crw-raw-imagecrwcom.canon.tif-raw-imagetifcom.dxo.raw-imagedxocom.epson.raw-imageerfcom.fuji.raw-imagerafcom.hasselblad.3fr-raw-image3frcom.hasselblad.fff-raw-imagefffcom.kodak.raw-imagedcrcom.konicaminolta.raw-imagemrwcom.leafamerica.raw-imagemoscom.leica.raw-imagerawcom.leica.rwl-raw-imagerwlcom.microsoft.curcom.nikon.nrw-raw-imagenrwcom.nikon.raw-imagenefcom.olympus.or-raw-imageorfcom.olympus.raw-imageorfcom.olympus.sr-raw-imageorfcom.panasonic.raw-imagerawcom.panasonic.rw2-raw-imagerw2com.pentax.raw-imagepefcom.phaseone.raw-imageiiqcom.samsung.raw-imagesrwcom.sony.arw-raw-imagearwcom.sony.axr-raw-imageaxrcom.sony.raw-imagesrfcom.sony.sr2-raw-imagesr2org.webmproject.webpwebpUnless noted otherwise the format is supported since at least iOS 14.3 (18C66)