ZeroNote

Markdown scratchpad

Write Markdown before your idea disappears.

ZeroNote is an online Markdown scratchpad for quick notes, snippets, prompts, checklists, and rough drafts. It opens fast, previews Markdown, and saves your text locally in this browser without an account.

Start writing Plain text mode

Try a README draft

Open the app, create a file and choose Markdown format. Paste this example into the editor, inspect the preview, then use the preview menu to download the file.

# Project notes

## Setup
1. Install dependencies.
2. Run the development server.

## Links
[Project documentation](https://example.com)

```sh
npm run dev
```

The preview displays headings, a numbered list, a link and a fenced code block. Download preserves Markdown source; it does not publish your README or synchronize it with GitHub.

Open the Markdown editor

Built for temporary Markdown, not heavy knowledge management

Use it when you need a clean Markdown buffer before text moves into GitHub, Notion, Slack, an email, a blog editor, or an AI chat.

No account

Open the page and type. There is no workspace, onboarding flow, or sign-up screen between you and the first sentence.

Local autosave

Your drafts are saved with IndexedDB in the same browser profile, so the app stays useful even when you are offline.

Live preview

Write Markdown on the left and inspect the rendered result on the right before copying it elsewhere.

Common ways to use this Markdown scratchpad

  • Draft README sections. Shape headings, bullet lists, code blocks, and links before pasting into a repository.
  • Clean up AI prompts. Keep role, task, constraints, examples, and output format in a readable Markdown structure.
  • Write quick publishing drafts. Prepare short posts, changelog notes, meeting summaries, or support replies without opening a heavy editor.
  • Hold temporary snippets. Keep commands, Markdown tables, or copied text in one place while you work across tabs.

Markdown-focused features

Preview before copying

Check headings, lists, links, tables, quotes, and fenced code blocks before pasting into another editor.

Draft technical text

Use it for README paragraphs, issue templates, release notes, command snippets, and documentation outlines.

Export as Markdown

Download a draft as an `.md` file when it becomes more than a temporary browser note.

Choose the format that fits your draft

  • Choose Markdown Scratchpad for structure. Use headings, code blocks and lists to organize a draft and check it in the preview.
  • Choose Online Notepad for plain quick notes. If formatting does not matter, the general online notepad page is simpler.
  • Use a knowledge base when permanence matters. If a note needs collaboration, backlinks, sync, or long-term organization, move it to your main system after drafting.

Local storage and privacy

Your Markdown stays in your browser. ZeroNote stores drafts locally with IndexedDB. Clearing site data, changing browser profiles, or switching devices can remove access, so download important notes as `.md` when they become worth keeping.

FAQ

Where is my data stored?

Notes are stored locally in your browser. Clearing site data or switching browsers can remove them, so download important drafts.

Is this a Notion or Obsidian replacement?

No. ZeroNote is a fast scratchpad for first drafts and temporary notes, not a long-term knowledge base.

Can I use it as an online Markdown editor?

Yes, for lightweight drafting and previewing. It is best for short to medium notes that you plan to copy, download, or move elsewhere.

Do I need to sign in to save Markdown notes?

No. Drafts autosave locally in the browser profile you are using, without a ZeroNote account.

Does the Markdown preview support code blocks?

Yes. ZeroNote supports common Markdown formatting, including headings, lists, links, tables, blockquotes, and fenced code blocks.

Related ZeroNote tools

AI Prompt ScratchpadDraft and refine prompts before sending them to ChatGPT, Claude, Gemini, or another AI tool. No-login NotepadOpen a simple browser notepad when Markdown preview is not needed. Local-first NotesLearn what browser-local storage means for privacy, backup, and device switching. Privacy NoteRead how ZeroNote handles local drafts and browser storage boundaries.