Supported File Formats
Notes
Coeus reads .md (Markdown) files. All notes are stored in this format.
Images
Coeus can import and display: JPEG, PNG, GIF, WebP, HEIC.
Imported images are copied to your assets/ folder and embedded in notes.
Documents
| Format | What Coeus does with it |
|---|---|
Copies to assets/, extracts text for search and AI | |
| TXT | Copies to assets/, indexes text |
| CSV | Copies to assets/, indexes content |
| JSON | Copies to assets/, indexes content |
| Markdown (.md) | Treated as a note if in the notes folder, or as an attachment if imported separately |
Audio and Video
These formats can be transcribed:
| Format | Extension |
|---|---|
| MP3 | .mp3 |
| WAV | .wav |
| M4A / AAC | .m4a, .aac |
| MP4 / MOV | .mp4, .mov |
| OGG / OGA | .ogg, .oga |
| WebM | .webm |
| FLAC | .flac |
Transcription requires a transcription mode to be configured (local Whisper or OpenAI API). See Voice Transcription.
URLs
Coeus can fetch and import web pages. The content is extracted and saved as Markdown. Source URL is stored in frontmatter.
YouTube URLs are handled separately: Coeus downloads the audio and transcribes it.