Dashboard

Live Markdown Editor & Preview

Editor

Edit markdown with real-time split-screen preview, HTML export, word counters, and cheatsheet.

103 words • 703 characters
Markdown Source
Markdown
UTF-8•100% Local Sandbox
19 lines • 705 Bytes
Live HTML PreviewReal-time

DevTools Architecture Overview

DevTools is built from the ground up to run 100% locally in your browser.

Why Client-Side Execution Matters

When inspecting data, testing expressions, or formatting code, sensitive variables should never leave your machine.

Key Technical Pillars

  • Zero Server Uploads: W3C Web APIs and local V8 execution.
  • Hardware Acceleration: Web Cryptography API (crypto.subtle).
  • Privacy by Design: No telemetry, no third-party tracking cookies.
    • > "Security isn't a feature you add later — it's an architectural choice made on day one."

    Supported Workspaces

  • JSON Formatter & Validator
  • JWT Token Inspector
  • Regular Expression Workbench

    • About Live Markdown Editor & Preview

    Markdown is a lightweight markup language with plain-text formatting syntax designed to be converted into structurally valid HTML. A live markdown editor provides an immediate split-pane preview to verify headings, tables, code blocks, lists, and links.

    Zero-Upload Privacy Guarantee

    Drafting internal technical documentation, release notes, or personal notes locally prevents leaking draft content before publication.

    Client-Side Sandbox● 100% Air-Gapped

    Key Capabilities & Features

    Split-screen live interactive preview
    Supports headings, blockquotes, code fences, tables, task lists, and links
    Word counter, character counter, and estimated reading time stats
    Export options: Copy clean HTML, Download .md, or Download .html
    Built-in markdown syntax cheatsheet template

    How to use this markdown editor preview

    1

    Write Markdown

    Type your markdown syntax in the left editor panel.

    2

    Inspect Live Preview

    View the formatted document in the right panel with styling for headings, blockquotes, code, and tables.

    3

    Review Metrics

    Check real-time word count, character count, and estimated reading time.

    4

    Export HTML or Markdown

    Copy the generated HTML code or download the file directly.

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    HTML to JSX & React Converter

    Convert raw HTML markup and inline styles into clean React JSX components with camelCase attributes.

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    Regex Tester & Explainer

    Test regular expressions with real-time match highlighting, capture groups, and token explanation.

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    Frequently Asked Questions

    Yes, it supports tables, task lists [x], strikethrough, and fenced code blocks.