Document tools

Prepare a readable reference file, check the output, and keep the original source.

Excel and CSV to Markdown

Choose a worksheet and range, export stored values or formula text, and copy or download the table. Files are processed in your browser without an account.

Word to Markdown

Convert DOCX headings, lists and table text, inspect conversion notes, then copy or download Markdown.

PDF to Markdown

Preview the text extracted from each page and identify missing text before downloading.

PowerPoint AI summarizer

Review selected slide text, optionally include speaker notes, then send it to OpenAI for a concise summary with source passages.

Markdown table validator

Find row-width and delimiter issues with line diagnostics and safe padding repairs. Runs locally; checks pipe-table structure only.

AI text and context-size estimator

Measure exact text counts and compare an explicitly rough token estimate with your own budget. No upload or model-specific token guarantee.

Knowledge base starter kit

Download editable source registers, page templates and example files for a mixed-file library.