flatmark

PDF, Word, PowerPoint and Excel to Markdown

flatmark converts PDF, Word, PowerPoint, Excel and HTML to Markdown over a REST API and an MCP server. Files up to 8 MB convert in one call with MarkItDown. Files up to 25 MB and 200 pages go through a queue that runs Docling with OCR and table detection. The queue returns Markdown and a JSON structure file, by polling or a signed webhook. The servers are in Germany. The free plan has 100 credits a month and needs no card.

Links

• Website: https://flatmark.dev/go/github
• API docs: https://api.flatmark.dev/docs · OpenAPI
• Pricing: https://flatmark.dev/pricing
• Convert a PDF free: https://flatmark.dev/tools/pdf-to-markdown
• llms.txt: https://flatmark.dev/llms.txt

MCP server

Streamable-HTTP endpoint: https://api.flatmark.dev/mcp/ — the anonymous tier works without a key; an API key raises the limits.

Claude Code:

claude mcp add --transport http flatmark https://api.flatmark.dev/mcp/

Cursor / Windsurf / Cline / Claude Desktop:

{
  "mcpServers": {
    "flatmark": {
      "url": "https://api.flatmark.dev/mcp/"
    }
  }
}

One-click installs for every client: https://flatmark.dev/connect

API

Base URL https://api.flatmark.dev/ — authenticate with an X-API-Key header; anonymous calls work at a lower rate limit.