Convert Data to Markdown

Convert spreadsheet data into Markdown format that AI language models can read more effectively than raw CSV. Upload a CSV, TSV, or JSON file and the tool generates a properly formatted Markdown table with headers and alignment. Choose an optimization target (NotebookLM, Gemini, ChatGPT, Claude, or a custom word limit) and the tool automatically splits large datasets into multiple files that fit within each model's context window. Each output file includes YAML frontmatter with source info, part numbers, and row ranges for traceability. Download a single Markdown file or a ZIP of split parts. Word and token counts are shown for each file.