Where things live

Woofer follows each platform's conventions. On Linux:

What	Where	Safe to delete?
Settings	~/.config/woofer/settings.json	Yes, you lose preferences
Winamp skins	~/.config/woofer/skins/	Yes, you add them again
Shared Web API sign-in	~/.local/state/woofer/shared_web_api_token.json	Yes, you sign in again
Personal Web API sign-in	~/.local/state/woofer/personal_web_api_token.json	Yes, personal acceleration is removed
Playback credential	~/.local/state/woofer/credentials/	Yes, you approve playback again
Last session	~/.local/state/woofer/session.json	Yes
Audio cache	~/.cache/woofer/audio/	Always
Artwork cache	~/.cache/woofer/art/	Always
Lyrics cache	~/.cache/woofer/lyrics/	Always
Translations cache	~/.cache/woofer/translations/	Always
Account-scoped playlist cache	~/.cache/woofer/playlists/<account-id>/	Always
Installed plugins	~/.local/state/woofer/plugins/	No, they are uninstalled
Last run's log	~/.local/state/woofer/woofer.log	Always
Crash log	~/.local/state/woofer/panic.log	Always

Clearing caches never signs you out; credentials live in state, not cache. Web API token files are written with owner-only permissions. Signing out from Settings deletes both Web API grants and the separate playback credential.

On macOS, settings, state, and the logs are in ~/Library/Application Support/me.kreatzzz.woofer and the caches in ~/Library/Caches/me.kreatzzz.woofer. On Windows, settings are in %APPDATA%\kreatzzz\woofer\config, state and the logs in %LOCALAPPDATA%\kreatzzz\woofer\data, and the caches in %LOCALAPPDATA%\kreatzzz\woofer\cache.

settings.json

Settings are stored in one readable JSON file and written atomically. Its main fields are:

Field	Default	Meaning
device_name	Woofer	Name on Spotify Connect
bitrate	320	96, 160, or 320 kbps
normalisation	false	Volume normalisation
autoplay	true	Keep playing similar music at the end
gapless	true	Gapless playback
audio_backend	platform	pulseaudio or rodio on Linux
audio_cache_mb	1024	On-disk audio cache budget
theme	dark	dark, light, or system
accent_from_art	true	Tint pages with album art
winamp_window	false	The window is the Winamp mini player
skin	none	A file or folder name in the skins folder; the built-in skin when absent
skin_scale	by display	Screen pixels per skin pixel, 1 to 4
winamp_on_top	false	Keep the mini player above other windows
vis	bars	The mini player's visualiser: bars, scope, or off
playlist_open	false	The playlist window is open under the mini player
playlist_height	174	The playlist window's height in skin pixels
eq_open	false	The equalizer window is open under the mini player
eq_on	false	The equalizer shapes local playback
eq_preamp_db	0	The preamp, in decibels, never above zero
eq_bands_db	ten zeros	The bands from 60 Hz to 16 kHz, in decibels, -12 to 12
balance	0	Left to right, -1 to 1, for local playback
mono	false	Play both channels the same
playlist_shaded	false	The playlist window is rolled up to its title bar
winamp_shaded	false	The main window is rolled up to its title bar
keep_playing_in_background	true	Close to tray
check_for_updates	true	Ask GitHub once a day for a newer release
web_client_id	none	Optional personal Spotify app id used alongside shared coverage
lyrics_language	en	Language the lyrics panel translates into
lyrics_show_translation	false	Echo each lyric line in your language
lyrics_romanize	false	Write lyric lines in Latin letters

Command line

woofer [OPTIONS]

  --device-name <NAME>  Spotify Connect name for this session
  -v, --verbose         More logs from librespot and the API client

woofer.log in the state directory is what to attach to a bug report: it contains the last run's output, including the additional lines printed by woofer -v. If the app crashed, attach panic.log from the same directory as well.

Demo mode

Builds made with cargo build --features demo accept --demo, which fills the interface with sample data, useful for screenshots, theming, and interface work. Demo mode never writes settings.

--demo-page opens a page, such as home, playlist:pl1, or artist:art0, and --demo-show adds surfaces on top of it: a comma separated list of queue, devices, lyrics, shortcuts, premium, create, light, focus, winamp, playlist, eq, and eq-shade.

--demo-shot <PATH> writes the window to a PNG and exits, which is how the screenshots in these pages are made:

cargo run --release --features demo -- \
  --demo-shot docs/screenshot.png --demo-page playlist:pl1 --demo-show queue

The shot is the window's own frame buffer, so it comes out at whatever size the window is. --demo-shot-delay <MS> sets how long cover art has to arrive before the frame is taken.