diagram.ch

Place

#31 of 32

Chart

Score

5.8

The facts below are what the maker publishes about diagram.ch, checked and dated. Our editors have not written about it yet.

Plans and prices

From diagram.ch's own pricing page, checked 8 Oct 2026.

Plan	Price	What it gives you
Free	Free	Several diagrams · lightweight rate limit · no account required

Each one read from diagram.ch's own pages, with the date it was checked.

Account: The service does not require an account.checked 8 Oct 2026
Data handling: User text is sent securely to the AI service to produce Mermaid code, and temporary infrastructure logs may be created for security and reliability.checked 8 Oct 2026
Diagram types: The MVP supports flowcharts, process diagrams, mind maps, sequence diagrams, and system or software architecture diagrams.checked 8 Oct 2026
Editing: Users can edit the original description and regenerate, or edit copied Mermaid code in a compatible Mermaid editor.checked 8 Oct 2026
Exports: Users can download diagrams as SVG or PNG, or copy the Mermaid source code.checked 8 Oct 2026
Generation: The AI selects a diagram format and creates Mermaid syntax from the user's description.checked 8 Oct 2026
Prompt storage: Prompts and generated diagrams are processed for the request and are not intentionally saved in a product database.checked 8 Oct 2026
Purpose: diagram.ch turns plain-language descriptions of processes, ideas, systems, or workflows into editable diagrams.checked 8 Oct 2026
Sensitive data: The site advises users not to enter passwords, health data, financial details, or other highly sensitive information.checked 8 Oct 2026
Usage limit: Free generation is subject to a lightweight rate limit intended to protect the service from abuse.checked 8 Oct 2026