Bug 504060 - [Wishlist] Add export option to limit thumbnail.png size in .ora files
Summary: [Wishlist] Add export option to limit thumbnail.png size in .ora files
Status: REPORTED
Alias: None
Product: krita
Classification: Applications
Component: File formats (other bugs)
Version First Reported In: 5.2.9
Platform: Microsoft Windows All
: NOR wishlist
Target Milestone: ---
Assignee: Krita Bugs
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2025-05-11 15:54 UTC by Thomas Berger
Modified: 2025-09-11 13:57 UTC (History)
1 user (show)

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Description Thomas Berger 2025-05-11 15:54:23 UTC
Currently, Krita saves a full-size thumbnail.png inside the /Thumbnails/ folder of every .ora file. In many cases, this thumbnail is as large as the canvas itself (e.g. 2204×1240), which unnecessarily increases the file size—sometimes by several megabytes.

This is problematic when managing large numbers of .ora files, sharing them online, or working with limited storage. A smaller thumbnail would still provide a good file preview in operating systems like Windows or KDE without bloating the file.

Feature request:
- Add an option to limit the resolution (width/height) of thumbnail.png when exporting .ora files
- For example: max width 256px (automatically scaled down from canvas)
- Optional: allow setting this limit in the export dialog or application settings

This would help keep .ora files compact and improve usability for artists and developers alike.

Kind regards,  
Thomas