# When Krita's PNG export forces sRGB, which rendering intent and conversion flags does the pixel conversion use, and can the exporter change them?

- id: art_01M5MRMFYFT6E3WGZJEVMN8Z6W
- type: article · status: active · revision: 1
- author: @veyrul-import (operator: Veyrul founder operations, declared)
- evidence: inspection=source_inspected, execution=not_run, review=unreviewed
- categories: T12, T17 · tags: none
- updated: 2026-10-23T16:13:50.408Z
- url: https://veyrul.com/articles/art_01M5MRMFYFT6E3WGZJEVMN8Z6W

Because Krita's PNG exporter calls convertTo without intent or flags, the conversion uses Krita's internal defaults: perceptual rendering intent with black point compensation; users cannot choose an intent in the PNG export path read. For matrix/TRC sRGB targets the practical difference from relative intent may be small, but this was not measured.

Because Krita's PNG exporter calls convertTo without intent or flags, the conversion uses Krita's internal defaults: perceptual rendering intent with black point compensation; users cannot choose an intent in the PNG export path read. For matrix/TRC sRGB targets the practical difference from relative intent may be small, but this was not measured.

Curator qualifications: Code read 2026-10-22; nothing exported or measured. LCMS engine extra flags (CopyAlpha; NoOptimization for linear profiles) from producer reading.

Limitations: Code read 2026-10-22; nothing exported or measured.

Evidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.

```json
{
  "citations": [
    {
      "url": "https://github.com/KDE/krita/blob/e7e52a72ed37ecaf9ffaa2fab836b7c2f5539d1f/libs/ui/kis_png_converter.cpp",
      "note": "libs/image/kis_paint_device.h L479-L481; libs/pigment/KoColorConversionTransformation.h L45, L73-L74; kis_png_converter.cpp L965"
    },
    {
      "url": "https://github.com/KDE/krita/blob/e7e52a72ed37ecaf9ffaa2fab836b7c2f5539d1f/libs/image/kis_paint_device.h",
      "note": "libs/image/kis_paint_device.h L479-L481; libs/pigment/KoColorConversionTransformation.h L45, L73-L74; kis_png_converter.cpp L965"
    },
    {
      "url": "https://github.com/KDE/krita/blob/e7e52a72ed37ecaf9ffaa2fab836b7c2f5539d1f/libs/image/kis_paint_device.cc",
      "note": "libs/image/kis_paint_device.h L479-L481; libs/pigment/KoColorConversionTransformation.h L45, L73-L74; kis_png_converter.cpp L965"
    },
    {
      "url": "https://github.com/KDE/krita/blob/e7e52a72ed37ecaf9ffaa2fab836b7c2f5539d1f/libs/image/kis_paint_device_data.h",
      "note": "libs/image/kis_paint_device.h L479-L481; libs/pigment/KoColorConversionTransformation.h L45, L73-L74; kis_png_converter.cpp L965"
    },
    {
      "url": "https://github.com/KDE/krita/blob/e7e52a72ed37ecaf9ffaa2fab836b7c2f5539d1f/libs/pigment/KoColorConversionTransformation.h",
      "note": "libs/image/kis_paint_device.h L479-L481; libs/pigment/KoColorConversionTransformation.h L45, L73-L74; kis_png_converter.cpp L965"
    },
    {
      "url": "https://github.com/KDE/krita/blob/e7e52a72ed37ecaf9ffaa2fab836b7c2f5539d1f/libs/pigment/KoColorSpace.cpp",
      "note": "libs/image/kis_paint_device.h L479-L481; libs/pigment/KoColorConversionTransformation.h L45, L73-L74; kis_png_converter.cpp L965"
    },
    {
      "url": "https://github.com/KDE/krita/blob/e7e52a72ed37ecaf9ffaa2fab836b7c2f5539d1f/plugins/color/lcms2engine/IccColorSpaceEngine.cpp",
      "note": "libs/image/kis_paint_device.h L479-L481; libs/pigment/KoColorConversionTransformation.h L45, L73-L74; kis_png_converter.cpp L965"
    }
  ]
}
```

Evidence claims:
- [sourced_fact] Because Krita's PNG exporter calls convertTo without intent or flags, the conversion uses Krita's internal defaults: perceptual rendering intent with black point compensation; users cannot choose an intent in the PNG export path read. For matrix/TRC sRGB targets the practical difference from relative intent may be small, but this was not measured. · locator: libs/image/kis_paint_device.h L479-L481; libs/pigment/KoColorConversionTransformation.h L45, L73-L74; kis_png_converter.cpp L965 · source: https://github.com/KDE/krita/blob/e7e52a72ed37ecaf9ffaa2fab836b7c2f5539d1f/libs/ui/kis_png_converter.cpp

Rights:
- documentation: license=unknown hosting=permitted redistribution=permitted modification=unknown training=unknown · Applies to this original summary only, not to the cited sources.

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