Issues

• Schedule generation within Nextcloud's "maintenance mode"

  enhancement
  nextcloud/previewgenerator#678 · Filter by author dennorske opened on Sep 19, 2026

• disabling the background job does not disable the preview generation in cron.php

  bug
  nextcloud/previewgenerator#676 · Filter by author BernieO opened on Sep 12, 2026

• Cleaning generated previews doesn't clean up database entries.

  bug
  nextcloud/previewgenerator#670 · Filter by author rustyscottweber opened on Jul 27, 2026
  1

• Error on preview generator of metadata/cache OS files.

  bug
  nextcloud/previewgenerator#667 · Filter by author nezumiwriter opened on Jul 12, 2026

• occ:preview:generate-all not supported

  nextcloud/previewgenerator#652 · Filter by author theking2 opened on Apr 25, 2026
  2

• preview:generate-all crashses without an error

  bugneeds info
  nextcloud/previewgenerator#641 · Filter by author Cattalins opened on Feb 26, 2026
  9

• Add preview:queue-all command to queue all media files for the background job

  1. to developenhancement
  nextcloud/previewgenerator#622 · Filter by author st3iny opened on Feb 1, 2026

• Preview is not generating for .jpg and .mp4

  bugneeds info
  nextcloud/previewgenerator#593 · Filter by author sirdrakeistda opened on Nov 21, 2025
  8

• Generating previews on encrypted files let generator fail

  1. to developbug
  nextcloud/previewgenerator#572 · Filter by author xundeenergie opened on Oct 23, 2025
  5

• Batch generation

  enhancement
  nextcloud/previewgenerator#555 · Filter by author stormsson opened on Jul 27, 2025
  3

• Peview Generator refueses to make thumbnails for videos from Samsung (any android version) phones

  bug
  nextcloud/previewgenerator#546 · Filter by author yoGhurrt1 opened on Jun 10, 2025
  11

• Limit the generated image dimension combinations

  0. to triagebugneeds info
  nextcloud/previewgenerator#529 · Filter by author nenatap opened on Dec 10, 2024
  2

• [Bug]: Max sized preview gets generated, regardless of specifications

  bug
  nextcloud/previewgenerator#518 · Filter by author marco-calautti opened on Oct 13, 2024
  5

• Generate Previews only for real files and not shared ones.

  enhancementneeds info
  nextcloud/previewgenerator#514 · Filter by author leinec opened on Sep 28, 2024
  3

• Add a limit to amount of previews that can be generated by a single call to pre-generate

  1. to developenhancement
  nextcloud/previewgenerator#513 · Filter by author Torbins opened on Sep 25, 2024
  1

• Question: what preview sizes are used in different apps?

  nextcloud/previewgenerator#502 · Filter by author Forza-tng opened on Aug 6, 2024
  1

• oc_filecache table with inconsistent entries (size = -1)

  nextcloud/previewgenerator#500 · Filter by author canchanchara opened on Aug 1, 2024
  3

• Add a timeout to preview generator.

  nextcloud/previewgenerator#489 · Filter by author Ramalama2 opened on Jul 1, 2024
  3

• Exclude folders from the initial generation by their names

  1. to developenhancement
  nextcloud/previewgenerator#486 · Filter by author bachmarc opened on Jun 25, 2024
  3

• Undefined array key "previews" at /var/www/nextcloud/apps/previewgenerator/lib/Command/Generate.php#160

  bugneeds info
  nextcloud/previewgenerator#465 · Filter by author srijansaxena11 opened on Apr 21, 2024
  9

• [OCP\Files\NotPermittedException] Could not create folder "/appdata_ocfmw89yr7pg/preview/a/b/a/d/2/c/9/34634" Version 5.4.0

  nextcloud/previewgenerator#453 · Filter by author coesy opened on Mar 2, 2024
  7

• TypeError: OC_Image::getOrientation(): Return value must be of type int, array returned

  bugdependenciesneeds info
  nextcloud/previewgenerator#452 · Filter by author frnmst opened on Feb 27, 2024
  4

• Preview-Generator + Groupfolder + read-only Link-Share = Previews cannot be loaded (404)

  nextcloud/previewgenerator#447 · Filter by author koelle25 opened on Feb 5, 2024
  1

• Optimization Python script

  performance
  nextcloud/previewgenerator#443 · Filter by author VilterPD opened on Jan 29, 2024
  6

• Error: Source file could not be loaded

  0. to triagebugneeds info
  nextcloud/previewgenerator#440 · Filter by author rustyscottweber opened on Jan 18, 2024
  16