Preview settings not described well

ℹ️ Support
,
9

  • Nextcloud Preview Providers that can be added to the enabledPreviewProviders array in the config/config.php file.

No External Dependencies

These providers can be enabled without any additional software dependencies.

  • OC\Preview\PNG
  • OC\Preview\JPEG
  • OC\Preview\GIF
  • OC\Preview\BMP
  • OC\Preview\XBitmap
  • OC\Preview\MarkDown
  • OC\Preview\MP3
  • OC\Preview\TXT
  • OC\Preview\Krita

ImageMagick Dependency

These providers require the ImageMagick extension to be installed and enabled.

  • OC\Preview\SVG
  • OC\Preview\TIFF
  • OC\Preview\PDF
  • OC\Preview\Illustrator
  • OC\Preview\Photoshop
  • OC\Preview\Postscript
  • OC\Preview\Font
  • OC\Preview\HEIC
  • OC\Preview\TGA
  • OC\Preview\SGI

Office Dependency

These providers require LibreOffice or OpenOffice to be installed.

  • OC\Preview\MSOfficeDoc
  • OC\Preview\MSOffice2003
  • OC\Preview\MSOffice2007
  • OC\Preview\OpenDocument
  • OC\Preview\StarOffice
  • OC\Preview\EMF

Imaginary Dependency

These providers require the Imaginary service to be set up.

  • OC\Preview\Imaginary
    Imaginary supports these MIME types:
    • image/bmp
    • image/x-bitmap
    • image/png
    • image/jpeg
    • image/gif
    • image/heic
    • image/heif
    • image/svg+xml
    • image/tiff
    • image/webp
    • application/illustrator
    • application/pdf (NC < 30)
  • OC\Preview\ImaginaryPDF (since NC 30)
    • application/pdf

AVConf/FFmpeg Dependency

These providers require AVConf/FFmpeg to be installed.

  • OC\Preview\Movie
    • All video MIME types supported by avconf/ffmpeg
      therefore this fantasy providers do not exist:
      • OC\Preview\MKV
      • OC\Preview\MP4
      • OC\Preview\AVI

Additional Providers

These providers support specific file types and might require additional configuration.

  • OC\Preview\WebP // // Requires PHP support for WebP images (php-gd)

  • Preview providers that do not need to be added to the enabledPreviewProviders array in the config/config.php file.

OC\Preview\Image: This provider is used internally and extended by other image providers. Adding OC\Preview\Image is unnecessary as it is automatically used by the specific image providers (PNG, JPEG, GIF, etc.).

  • Nextcloud Preview Providers that can NOT be added to the enabledPreviewProviders array in the config/config.php file.

Nextcloud Office

Nextcloud Office also creates thumbnails if the Collabora Office Server supports this. The Builtin CODE Server supports this and this support cannot be deactivated.
The Previews created by Nextcloud Office can not be changed in any way in the enabledPreviewProviders array in the config/config.php file.

  • image/emf
  • application/vnd.ms-excel
  • application/msword
  • application/vnd.openxmlformats-officedocument.*
  • application/vnd.oasis.opendocument.*
    • .odt, .ott, .oth, .odm, .odg, .otg, .odp, .otp, .ods, .ots, .odc, .odf, .odb, .odi, .oxt
  • application/pdf (only if OC\Preview\PDF is not set)

I hope I did not oversee any.
This is the actual situation. This may (/will) change in future.

Much and good luck,
ernolf