Single-File Markdown Editor

Write Markdown in one pane and see it rendered live, jump around via a heading outline, and open or save .md files.

Artifact by bugfishtm

IndexedGPL-3.0★ 1Text & writingNo sign-upRuns in your browser

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Opens bugfishtm.github.io in a new tab. Nothing to install.

Open Single-File Markdown Editor Source code

You provide: Markdown text or file
You get: Rendered preview and saved .md file
Account: No sign-up needed
AI: No AI: a plain tool
Your input: Processed in your browser, not uploaded (stated by the tool or its repo)
Price: Free to use
Made with: AI-built app
Source: Open source
Link check: Answered on Oct 31, 2026

About

Single-File Markdown Editor is an AI-built single-page app in the text writing category (markdown editor). It opens in your browser, so there is nothing to install. You provide markdown text or file and get rendered preview and saved .md file. Your input is processed on your device and not uploaded. It needs no account. It is a plain tool: no AI model is involved. The source code is public on GitHub (bugfishtm/js-markdown-editor).

Category: Text & writing · markdown editor

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Details

Auth: No auth
License: GPL-3.0
Repository: github.com/bugfishtm/js-markdown-editor
Website: bugfishtm.github.io/js-markdown-editor/
First seen: Oct 31, 2026
Last checked: Oct 31, 2026
Source: GitHub

Cite this page

Single-File Markdown Editor: free online. Agent Mart. https://agentmart.dev/artifacts/single-file-markdown-editor (last updated 2026-10-31)