Thumbnails: Reduce default JPEG quality from 92 to 85 to optimize storage and loading

[lastzero]

As a new user, I prefer a lower JPEG quality to reduce storage size and load time by default. Users with better hardware and higher quality expectations can increase the settings if needed, but most users will be happy with a lower setting.

This issue is only for documenting the change. It has already been implemented in 7c58f87.

Related Issues:

• Search: Performance Optimizations #1438
• Thumbnails: consider whether to change default jpeg quality #860

[kvalev]

Hi, what will happen when changing the value for already indexed data? Is the old one purged and recreated or does it only apply for newly indexed data? If its the latter, is there a recommended way to purge the old data?

And one more thing - which artifacts will be affected by this change, meaning where are the jpegs used? Album, Photo, Faces covers?

[lastzero]

@kvalev see https://docs.photoprism.app/user-guide/settings/advanced/#advanced-settings

Changing advanced settings always requires a restart to take effect. Selecting a different thumbnail quality or size won't replace existing thumbnails. You can regenerate them using the command-line interface.

All the images you see in the user interface are thumbnails, so basically everything is affected except downloading, sharing, and syncing the originals. Also, the JPEG quality of converted RAW images will be changed if the converter supports setting a quality.