Current sizes, ratios, durations, file limits, and text limits for Streaming audio placements. Specs change several times a year; confirm against the platform's documentation before production.
| Element | Specification |
|---|---|
| Duration | 15 and 30 seconds standard; 60 on some inventory; 6-second on Spotify |
| File | MP3 or WAV, 44.1 kHz, 192 kbps or higher; -16 LUFS loudness commonly required |
| Companion | 300 x 250 or 640 x 640 image, platform dependent |
Build client-approval mockups at these dimensions with the free ad mockup generator. Terms are defined in the creative section of the glossary.
Cite this page:
Agency Echelon. "Streaming audio ad specs." Agency Echelon Reference, reviewed September 2026. https://agencyechelon.com/reference/specs/streaming-audio/