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Private Browser Converter 100% Client-Side • Private

Convert documents to clean Markdown.

Drop in a PDF, Word file, spreadsheet, or other supported format. The conversion runs locally in your browser.

Choose files or drop them here

Supports PDF, DOCX, HTML, CSV or TSV, TXT, ZIP, JSON, XML, XLSX, Markdown, or URL

Files are processed locally in your browser.

Built for

  • AI context & RAG datasets
  • Cursor, Copilot & Codex
  • Obsidian & Notion
  • Docs, READMEs & wikis

Convert files without sending them away.

Convert local files in your browser, review the output, and download only when it looks right.

Files stay on your device

Local document conversion runs in your browser. Your files are not sent to a conversion server.

Review before you download

Edit the generated Markdown beside a rendered preview, then download it when the structure looks right.

Convert several files

Drop multiple supported files at once and download the converted documents together in a ZIP archive.

Common formats included

Work with PDF, DOCX, HTML, CSV, TXT, ZIP, JSON, XML, and XLSX files in one consistent workflow.

No account or daily quota

Open a converter and get to work. Practical file-size limits depend only on your browser and device memory.

Nothing to install

There is no command line or local setup. Choose a file and let your browser handle the conversion.

All Tools

Everything you need to work with Markdown.

Convert documents, export finished notes, or clean up awkward syntax. Local file tools run in your browser.

Export & Utilities

Markdown to PDF

Turn Markdown notes and .md files into a styled PDF in your browser. Preview the document before you download it.

Markdown to DOCX

Convert Markdown notes into a native Word DOCX file that opens in Microsoft Word, Google Docs, LibreOffice, or Pages.

Markdown to HTML

Turn Markdown files or snippets into semantic HTML with optional syntax highlighting, heading IDs, and footnotes.

Markdown to Plaintext

Remove Markdown syntax from headings, links, lists, and emphasis to get clean, unformatted text.

Markdown Editor

Write and format Markdown beside a live preview, with Mermaid diagrams and table cleanup built in.

Mermaid Editor

Preview Mermaid diagrams from Markdown and export them as SVG, PNG, or PDF in your browser.

Mermaid Flowchart Editor

Create Mermaid flowcharts visually with editable nodes, shapes, connections, templates, and live browser-based export.

Pie Chart Maker

Build pie charts from labels and values, customize slice colors, preview Mermaid code, and export locally.

Markdown Table Generator

Build Markdown tables visually or paste from Excel and Google Sheets, then copy clean GFM syntax.

Mermaid Timeline Generator

Build Mermaid timelines visually, edit the syntax live, and export SVG, PNG, PDF, or Markdown privately.

Gantt Chart Maker

Build a project Gantt chart from tasks, dates, and dependencies, then export SVG, PNG, PDF, or Mermaid code.

Sequence Diagram Generator

Build sequence diagrams from participants, messages, notes, and control-flow blocks, then export image or text.

How it compares

Browser tool, CLI, or library?

Pandoc and MarkItDown cover more formats and automation use cases, but both need a local install. TheMarkdowner is built for quick, visual work in a browser.

TheMarkdowner Browser tool Pandoc CLI MarkItDown Python library
Setup None; runs in your browser Install CLI + dependencies pip install + Python
Your files Never leave your browser Local on your machine Local on your machine
Live preview & editor Built in No (command line) No (library)
Best for Quick, private conversions & cleanup Power users, scripting, huge format matrix LLM / RAG ingestion pipelines
Formats 22 tools, both directions 40+ formats Office, PDF, images, audio → Markdown
Price Free, no sign-up Free & open source Free & open source

Need batch automation or exotic formats like LaTeX, EPUB, or audio transcription? Reach for Pandoc or MarkItDown. For quick, private conversions and cleanup with nothing to install, stay here.

Convert, review, and edit Markdown in your browser

TheMarkdowner helps developers, technical writers, and product teams turn existing files into Markdown they can actually work with. Convert PDF to Markdown, move Word documents into Markdown, or bring spreadsheet data into a README without uploading the source document to a conversion server.

Copying text out of a PDF often flattens headings, lists, and tables. The PDF converter reads the selectable text layer, rebuilds the structure it can identify, and opens the result beside a live preview. Other converters handle Word, HTML, CSV, Excel, JSON, XML, and plain text. You can also drop a ZIP archive to process supported files in one pass.

Local conversion for files on your device

Local file converters use browser-side libraries, so PDFs, research drafts, and client documents stay on your machine during conversion. The separate URL converter is for public webpages and clearly discloses that it uses a public reader proxy.

Edit and format the result

The Markdown editor pairs source text with a live preview. Its formatter aligns tables, normalizes list markers, and tidies spacing. For a table from scratch, use the Markdown table generator or paste a range directly from Excel or Google Sheets.

Preview Mermaid diagrams

Paste Markdown with fenced Mermaid blocks into the Mermaid editor. It finds flowcharts, ER diagrams, sequence diagrams, timelines, and other supported diagrams in the document. Inspect the preview, then export PNG, SVG, or PDF.

Give AI tools cleaner source material

Markdown exposes headings, tables, and lists as plain text. That makes project guides, API specifications, and structured data easier to inspect before you add them to Cursor, Copilot, Codex, Claude, or a RAG pipeline. Every file-to-Markdown converter here produces GitHub-flavored Markdown.

Convert in both directions

Export notes back to standard formats when you need to share them: Markdown to PDF, Markdown to Word, or Markdown to HTML. You can also strip formatting with the Markdown to plain text tool. When you need a syntax reminder, the Markdown cheat sheet and Mermaid cheat sheet include examples you can copy and adapt.

Frequently Asked Questions

What is Markdown and what does it mean?

Markdown is a way to add structure and formatting to plain text. A few readable symbols mark headings, bold text, links, lists, tables, and other elements. A Markdown renderer can then turn that text into HTML or another display format.

What is a Markdown file (.md)?

A Markdown file is a plain text file with a .md or .markdown extension. You can open it in any text editor. A Markdown-aware editor also shows how the headings, links, lists, and other formatting will look when rendered.

What is Markdown formatting (or Markdown format)?

Markdown formatting is the small set of plain-text markers used to structure a document. Examples include # Heading, **bold**, *italic*, - list item, and [link text](url).

How do you use Markdown?

Write normal text, then add simple markers where you need structure. Put # before a top-level heading, wrap text in ** for bold, or begin a line with - for a bullet. The Markdown editor shows the rendered result while you type.

How do you bold text in Markdown?

Wrap the words in double asterisks or double underscores: **bold text** or __bold text__. Most Markdown renderers display either form as bold text.

How do you underline text in Markdown?

Standard Markdown has no underline marker. If your renderer allows inline HTML, use <u>underlined text</u>. Check your target platform first because some Markdown renderers remove raw HTML.

How do you make or create a table in Markdown?

Use pipes | to separate columns and a row of hyphens to separate the header from the body:

| Header 1 | Header 2 |
| -------- | -------- |
| Cell A   | Cell B   |

For a larger table, use the Markdown table generator or paste the full document into the Markdown editor to align it.

How do you view and preview Markdown files in VS Code?

Open the .md file and choose Open Preview, or press Ctrl + Shift + V on Windows and Linux or Cmd + Shift + V on macOS. VS Code opens a rendered view of the current file.

Do I need to create an account?

No. The converters and editors work without an account or subscription.