MarkItDown Online

MarkItDown Online is a free document-to-Markdown converter focused on turning common file types into clean, reusable text. It supports PDF, DOCX, PPTX, XLSX, HTML, CSV, JSON, and XML, and is designed for workflows where Markdown is the preferred format for notes, documentation, and AI prompts.

The core feature is browser-based conversion. Basic mode processes files locally on the device, so users can convert without uploading to a server. An Advanced mode is available for eligible scanned or complex files and uses OCR to handle layouts that basic conversion may not capture well. The interface accepts a single file up to 10 MB per conversion.

The site is useful for writers, developers, researchers, and AI users who need to move content from office documents or structured data into Markdown. It fits tasks such as preparing prompts, building knowledge bases, summarizing slides, or converting spreadsheets into Markdown tables for reports.

Because support can vary depending on file structure and converter limits, users should check output quality, especially for scanned PDFs or complex layouts. For straightforward documents, the local browser mode offers a quick, privacy-friendly option. Overall, MarkItDown Online is a practical utility for everyday document-to-Markdown conversion.