Free tools
Free, private tools for writing with Markdown and AI: they run in your browser, need no sign-up, and open your work in the HermesMarkdown editor.
Markdown Table Generator
Edit a table like a spreadsheet and copy clean Markdown. No syntax to remember.
Mermaid in Markdown
Write a diagram as text, watch it draw itself, and drop it into any Markdown file.
Markdown Cleaner
Paste anything with text in it and get clean, standard Markdown back.
AI Tokenizer
See how language models read your text: every token, highlighted, with a live count.
Token Cost Calculator
Paste a prompt or a document and see what it costs on each model, input and reply.