How we store settings

Where we store settings

Persisted data is stored in SumatraPDF-settings.txt file.

In portable version the file is stored in the same directory as SumatraPDF executable. In non-portable version, it's in %LOCALAPPDATA%\SumatraPDF directory.

Starting with version 1.6 we also persist thumbnails for "Frequently read" list. They are stored in subdirectory sumatrapdfcache as .png files.

See https://www.sumatrapdfreader.org/settings/settings for information about all the settings.

How to add more settings

Don’t manually edit Settings.h file. Settings and their html documentations are generated via Go script.

To add more settings:

you need to have Go installed
edit https://github.com/sumatrapdfreader/sumatrapdf/blob/master/do/settings_def.go to add/remove settings
run doit.bat -gen-settings to regenerate the files
checkin regenerated files