DB Diagram & ERD Editor
100% Client-Side Data & ERDInteractive database diagram editor with bidirectional DBML code sync, drag-and-drop relationship connections, SQL import, and export.
Initializing sandbox for DB Diagram & ERD Editor...
More in Developer (4)
View all Developer tools →JSON Formatter & Validator
Format, beautify, validate, and minify JSON with interactive collapsible tree explorer, line-number error markers, and JSON5 relaxed syntax support.
YAML Formatter & Validator
Format and validate YAML streams with multi-document support (---), tab indentation warning fixers, block/flow formatting, and YAML to JSON conversion.
XML Formatter & Validator
Format, beautify, and validate XML documents with interactive DOM tree exploration, line-number error reporting, attribute sorting, and XPath copy.
Base64 Encoder & Decoder
Encode and decode UTF-8 Unicode text, files, images, and Data URLs with URL-safe Base64 toggles, line wrapping, and live image preview thumbnails.
Need a customized utility or new feature?
Let us know what developer tool or data formatter you would like us to build next.