LibreWolf Overrides Exporter

This tool generates a librewolf.overrides.cfg file from your current LibreWolf profile, exporting only stable, user‑intentional policy preferences.

It mirrors what you see in:

about:config → Only show modified preferences

while deliberately excluding runtime state, identifiers, timestamps, counters, migration flags, and UI bookkeeping.

LibreWolf settings and override precedence documentation: https://librewolf.net/docs/settings/

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What is exported (examples)

Only policy knobs — settings that answer “what should the browser do?”:

• Privacy & tracking protection
  privacy.trackingprotection.*, browser.contentblocking.*
• Network privacy
  beacon.enabled, network.trr.*, network.dns.*
• Telemetry / reporting policy (not cached IDs)
  toolkit.telemetry.*, datareporting.policy.*
• Security posture
  dom.security.*, selected security.*
• Form autofill policy
  dom.forms.autocomplete.formautofill (KeePassXC unaffected)
• DRM / EME toggle (if intentionally set)
  media.eme.enabled
• Bookmarks auto‑export path (if intentionally set)
  browser.bookmarks.file

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What is intentionally excluded

The script will never export or pin:

Identifiers / per‑profile data

• extensions.webextensions.uuids
• *Id, *UUID, profileId, storeID, clientID
• Nimbus / Push / per‑install identifiers

Timestamps, counters, lifecycle state

• last*, next*, *_date, *_time, *_seconds
• browser.search.totalSearches
• privacy.purge_trackers.last_purge
• browser.startup.lastColdStartupCheck

UI, migration, and bookkeeping state

• browser.uiCustomization.state
• browser.pageActions.persistedActions
• *.has-used, *.ever*, *.seen, *.pending
• extensions.*Schema, *migration*

Component / hardware bookkeeping

• media.gmp-*
• gfx.blacklist.*
• sandbox temp directory suffixes, failure IDs, hashes

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Command‑line flags

• --base-dir PATH
  Explicit LibreWolf base directory

• --profile-dir PATH
  Explicit profile directory (overrides profiles.ini)

• --output PATH
  Output path for librewolf.overrides.cfg

• --print-skipped
  Print skipped preferences as commented user_pref(...) lines for audit

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License

GPL‑3.0‑only. See LICENSE.