Supported File Formats

To get started with document import, see Build a Document Vault.

Supported formats

Format	Extensions	Conversion method	Notes
PDF	.pdf	EdgeParse WASM	Structured Markdown extraction (no OCR for scanned PDFs)
Microsoft Word	.docx	Mammoth (DOCX → HTML → text)	Modern .docx only, not legacy .doc
Plain text	.txt	Direct read	UTF-8 assumed
HTML	.html, .htm	Turndown (HTML → Markdown)	Strips scripts, styles, and navigation
PowerPoint	.pptx	Text extraction from slides	Slide text only, no speaker notes or images
Excel	.xls, .xlsx	Cell text extraction	Text content from cells, not formulas
Markdown	.md	Direct read	Preserved as-is

Conversion pipeline

1. Format detection — Daneel infers the format from the file extension.
2. Conversion — The CompositeConverter delegates to the appropriate converter (PdfConverter, DocxConverter, or HtmlDocumentConverter).
3. Text output — All formats are converted to plain text or Markdown.
4. Chunking — The text is split into overlapping chunks (default: 512 tokens, 64 token overlap).
5. Embedding — Each chunk is embedded using the active embedding model.
6. Deduplication — SHA-256 content hash prevents duplicate imports.

Size limits

Limit	Free plan	Paid plan
Max file size	1 MB	10 MB
Max converted characters	50,000	500,000
Max chunks per document	100	1,000
Max documents per vault	5	50
Max vaults	1	Unlimited

Page content extraction

For web pages (Page Chat and Site Search modes), Daneel uses a three-strategy extraction pipeline:

1. Readability.js — Mozilla’s reader-mode extractor. Best for articles and blog posts.
2. CSS cascade + Turndown — Selects the main content area via CSS heuristics, converts to Markdown. Used when Readability fails.
3. Plain-text fallback — Strips all HTML and returns raw text. Last resort.

YouTube pages use a separate transcript extraction pipeline.