Environment variables for settings (web / Docker)

These variables override app settings on first run when no persisted settings exist. They are injected via settings.js (from settings.js.template) and only apply to the web build.

Format: All values are strings; booleans use true/false, numbers are numeric strings. Leave unset or empty to use the default.

General

Setting	Default	Env variable	Available values / Description
`general.accent`	`rgb(53, 116, 252)`	`FS_GENERAL_ACCENT`	CSS `rgb(r, g, b)` string (e.g. `rgb(53, 116, 252)`). Invalid values are ignored.
`general.albumBackground`	`false`	`FS_GENERAL_ALBUM_BACKGROUND`	`true` / `false` — Show album background image.
`general.albumBackgroundBlur`	`3`	`FS_GENERAL_ALBUM_BACKGROUND_BLUR`	Blur amount for album background (number).
`general.artistBackground`	`true`	`FS_GENERAL_ARTIST_BACKGROUND`	`true` / `false` — Show artist background image.
`general.artistBackgroundBlur`	`3`	`FS_GENERAL_ARTIST_BACKGROUND_BLUR`	Blur amount for artist background (number).
`general.blurExplicitImages`	`false`	`FS_GENERAL_BLUR_EXPLICIT_IMAGES`	`true` / `false` — Blur explicit images.
`general.combinedLyricsAndVisualizer`	`false`	`FS_GENERAL_COMBINED_LYRICS_AND_VISUALIZER`	`true` / `false` — Combine lyrics and visualizer panel.
`general.enableGridMultiSelect`	`false`	`FS_GENERAL_ENABLE_GRID_MULTI_SELECT`	`true` / `false` — Enable multi-select in grid views.
`general.externalLinks`	`true`	`FS_GENERAL_EXTERNAL_LINKS`	`true` / `false` — Show external links in UI.
`general.followCurrentSong`	`true`	`FS_GENERAL_FOLLOW_CURRENT_SONG`	`true` / `false` — Follow current song in list.
`general.followSystemTheme`	`false`	`FS_GENERAL_FOLLOW_SYSTEM_THEME`	`true` / `false` — Use OS light/dark preference.
`general.homeFeature`	`true`	`FS_GENERAL_HOME_FEATURE`	`true` / `false` — Show home featured carousel.
`general.homeFeatureStyle`	`single`	`FS_GENERAL_HOME_FEATURE_STYLE`	`multiple` / `single` — Home featured carousel style.
`general.language`	`en`	`FS_GENERAL_LANGUAGE`	UI language code (e.g. `en`, `de`, `fr`).
`general.theme`	`defaultDark`	`FS_GENERAL_THEME`	One of: `ayuDark`, `ayuLight`, `catppuccinLatte`, `catppuccinMocha`, `defaultDark`, `defaultLight`, `dracula`, `githubDark`, `githubLight`, `glassyDark`, `gruvboxDark`, `gruvboxLight`, `highContrastDark`, `highContrastLight`, `materialDark`, `materialLight`, `monokai`, `nightOwl`, `nord`, `oneDark`, `rosePine`, `rosePineDawn`, `rosePineMoon`, `shadesOfPurple`, `solarizedDark`, `solarizedLight`, `tokyoNight`, `vscodeDarkPlus`, `vscodeLightPlus`.
`general.themeDark`	`defaultDark`	`FS_GENERAL_THEME_DARK`	Same as theme (used when system is dark).
`general.themeLight`	`defaultLight`	`FS_GENERAL_THEME_LIGHT`	Same as theme (used when system is light).
`general.lastfmApiKey`	(empty)	`FS_GENERAL_LASTFM_API_KEY`	Last.fm API key.
`general.lastFM`	`true`	`FS_GENERAL_LAST_FM`	`true` / `false` — Enable Last.fm.
`general.musicBrainz`	`true`	`FS_GENERAL_MUSIC_BRAINZ`	`true` / `false` — MusicBrainz links.
`general.nativeAspectRatio`	`false`	`FS_GENERAL_NATIVE_ASPECT_RATIO`	`true` / `false` — Use native cover art aspect ratio.
`general.pathReplace`	(empty)	`FS_GENERAL_PATH_REPLACE`	Path pattern to replace (e.g. server path in Docker).
`general.pathReplaceWith`	(empty)	`FS_GENERAL_PATH_REPLACE_WITH`	Replacement path.
`general.playerbarOpenDrawer`	`false`	`FS_GENERAL_PLAYERBAR_OPEN_DRAWER`	`true` / `false` — Open queue/lyrics as drawer from player bar.
`general.primaryShade`	`6`	`FS_GENERAL_PRIMARY_SHADE`	Mantine primary shade 0–9 (number).
`general.resume`	`true`	`FS_GENERAL_RESUME`	`true` / `false` — Resume playback on load.
`general.showLyricsInSidebar`	`true`	`FS_GENERAL_SHOW_LYRICS_IN_SIDEBAR`	`true` / `false` — Show lyrics in sidebar.
`general.showRatings`	`true`	`FS_GENERAL_SHOW_RATINGS`	`true` / `false` — Show star ratings.
`general.showVisualizerInSidebar`	`true`	`FS_GENERAL_SHOW_VISUALIZER_IN_SIDEBAR`	`true` / `false` — Show visualizer in sidebar.
`general.sidebarCollapsedNavigation`	`true`	`FS_GENERAL_SIDEBAR_COLLAPSED_NAVIGATION`	`true` / `false` — Start with collapsed sidebar nav.
`general.sidebarCollapseShared`	`false`	`FS_GENERAL_SIDEBAR_COLLAPSE_SHARED`	`true` / `false` — Share sidebar collapse state.
`general.sidebarPlaylistList`	`true`	`FS_GENERAL_SIDEBAR_PLAYLIST_LIST`	`true` / `false` — Show playlist list in sidebar.
`general.sidebarPlaylistSorting`	`false`	`FS_GENERAL_SIDEBAR_PLAYLIST_SORTING`	`true` / `false` — Enable playlist sorting in sidebar.
`general.sideQueueType`	`sideQueue`	`FS_GENERAL_SIDE_QUEUE_TYPE`	`sideDrawerQueue` / `sideQueue` — Side play queue style.
`general.sideQueueLayout`	`horizontal`	`FS_GENERAL_SIDE_QUEUE_LAYOUT`	`horizontal` / `vertical` — Attached side queue layout orientation.
`general.useThemeAccentColor`	`false`	`FS_GENERAL_USE_THEME_ACCENT_COLOR`	`true` / `false` — Use theme’s accent color instead of custom.
`general.useThemePrimaryShade`	`true`	`FS_GENERAL_USE_THEME_PRIMARY_SHADE`	`true` / `false` — Use theme’s primary shade.
`general.zoomFactor`	`100`	`FS_GENERAL_ZOOM_FACTOR`	UI zoom percentage (number).

Playback

Setting path	Default	Env variable	Available values / Description
`playback.mediaSession`	`false`	`FS_PLAYBACK_MEDIA_SESSION`	`true` / `false` — Media Session API (e.g. browser/media keys).
`playback.webAudio`	`true`	`FS_PLAYBACK_WEB_AUDIO`	`true` / `false` — Use Web Audio for playback.
`playback.audioFadeOnStatusChange`	`true`	`FS_PLAYBACK_AUDIO_FADE_ON_STATUS_CHANGE`	`true` / `false` — Fade on play/pause.
`playback.preservePitch`	`true`	`FS_PLAYBACK_PRESERVE_PITCH`	`true` / `false` — Preserve pitch when changing speed.
`playback.scrobble.enabled`	`true`	`FS_PLAYBACK_SCROBBLE_ENABLED`	`true` / `false` — Enable scrobbling.
`playback.scrobble.notify`	`false`	`FS_PLAYBACK_SCROBBLE_NOTIFY`	`true` / `false` — Scrobble notifications.
`playback.scrobble.scrobbleAtDuration`	`240`	`FS_PLAYBACK_SCROBBLE_AT_DURATION`	Seconds of playback before scrobble.
`playback.scrobble.scrobbleAtPercentage`	`75`	`FS_PLAYBACK_SCROBBLE_AT_PERCENTAGE`	Percentage of track before scrobble.
`playback.transcode.enabled`	`false`	`FS_PLAYBACK_TRANSCODE_ENABLED`	`true` / `false` — Enable transcoding.

Discord

Setting path	Default	Env variable	Available values / Description
`discord.enabled`	`false`	`FS_DISCORD_ENABLED`	`true` / `false` — Discord rich presence.
`discord.clientId`	(built-in)	`FS_DISCORD_CLIENT_ID`	Custom Discord application ID.
`discord.displayType`	`feishin`	`FS_DISCORD_DISPLAY_TYPE`	`artist` / `feishin` / `song`.
`discord.linkType`	`none`	`FS_DISCORD_LINK_TYPE`	`last_fm` / `musicbrainz` / `musicbrainz_last_fm` / `none`.
`discord.showAsListening`	`false`	`FS_DISCORD_SHOW_AS_LISTENING`	`true` / `false`.
`discord.showPaused`	`true`	`FS_DISCORD_SHOW_PAUSED`	`true` / `false` — Show paused state.
`discord.showServerImage`	`false`	`FS_DISCORD_SHOW_SERVER_IMAGE`	`true` / `false`.
`discord.showStateIcon`	`true`	`FS_DISCORD_SHOW_STATE_ICON`	`true` / `false`.

Lyrics

Setting path	Default	Env variable	Available values / Description
`lyrics.fetch`	`true`	`FS_LYRICS_FETCH`	`true` / `false` — Fetch lyrics.
`lyrics.follow`	`true`	`FS_LYRICS_FOLLOW`	`true` / `false` — Follow current line.
`lyrics.delayMs`	`0`	`FS_LYRICS_DELAY_MS`	Sync delay in milliseconds.
`lyrics.preferLocalLyrics`	`true`	`FS_LYRICS_PREFER_LOCAL`	`true` / `false` — Prefer local lyric files.
`lyrics.showMatch`	`true`	`FS_LYRICS_SHOW_MATCH`	`true` / `false`.
`lyrics.showProvider`	`true`	`FS_LYRICS_SHOW_PROVIDER`	`true` / `false`.
`lyrics.enableAutoTranslation`	`false`	`FS_LYRICS_ENABLE_AUTO_TRANSLATION`	`true` / `false`.
`lyrics.translationApiKey`	(empty)	`FS_LYRICS_TRANSLATION_API_KEY`	API key for lyric translation.
`lyrics.translationTargetLanguage`	`en`	`FS_LYRICS_TRANSLATION_TARGET_LANGUAGE`	Target language code.
`lyrics.alignment`	`center`	`FS_LYRICS_ALIGNMENT`	`center` / `left` / `right`.

Auto DJ

Setting path	Default	Env variable	Available values / Description
`autoDJ.enabled`	`false`	`FS_AUTO_DJ_ENABLED`	`true` / `false`.
`autoDJ.itemCount`	`5`	`FS_AUTO_DJ_ITEM_COUNT`	Number of items to add.
`autoDJ.timing`	`1`	`FS_AUTO_DJ_TIMING`	Timing value (number).

CSS

Setting path	Default	Env variable	Available values / Description
`css.content`	(empty)	`FS_CSS_CONTENT`	Custom CSS string (sanitized like in-app custom CSS). Set `FS_CSS_ENABLED=true` to apply.
`css.enabled`	`false`	`FS_CSS_ENABLED`	`true` / `false` — Enable custom CSS.

Font

Setting path	Default	Env variable	Available values / Description
`font.type`	`builtIn`	`FS_FONT_TYPE`	`builtIn` / `system` / `custom`.
`font.builtIn`	`Inter`	`FS_FONT_BUILT_IN`	Built-in font name.
`font.system`	(empty)	`FS_FONT_SYSTEM`	System font name (when type is `system`).

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