DevTools Hub
A developer platform for diagrams, formatters, and encoders with account-based project saving.
Sequence Diagram
Visualize interactions between actors and systems over time using Mermaid sequence diagrams.
Database Diagram
Design ER diagrams to model database entities and relationships using Mermaid.
Flowchart
Build process and decision flow diagrams quickly with Mermaid flowchart syntax.
Gantt Chart
Plan schedules and milestones with Mermaid gantt charts.
Class Diagram
Describe object-oriented structures and relationships using Mermaid class diagrams.
Base64 Encoder / Decoder
Encode and decode UTF-8 text to and from Base64 directly in the browser.
JSON Formatter / Validator
Format, minify, and validate JSON with clear syntax errors.
XML Formatter / Validator
Format, minify, and validate XML with browser-side parsing.
REST API Client
Send browser-based HTTP requests with params, headers, body, and auth.
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