Search tools and pages.
Regex tester, diff checker, JSON/XML/HTML viewers, Markdown editor
Search regular expression tokens, examples, flags, groups, and copy-ready recipes
Test and debug regular expressions
Compare two texts and highlight differences
View and explore JSON data
View and explore XML documents
View and explore YAML data
View and preview HTML
Edit and preview Markdown with live preview
Preview Markdown as rendered HTML
Test JSONPath expressions against JSON data
Test XPath expressions against XML
Compare two JSON documents with a structure-aware diff tree, ignore-order options, and JSON Patch (RFC 6902) plus jsondiffpatch delta export
Explore any JSON document as an interactive node-link graph with collapsible nodes, $ref/href detection, and PNG plus DOT export
Paste, upload, or fetch an OpenAPI spec and render readable, navigable API documentation with copy-as-curl per operation
Visualize OpenAPI / Swagger endpoint relationships, schema dependencies, and request flows as an interactive node-link graph with PNG export
Visualize SQL CREATE TABLE or DBML as an ERD with table cards, primary-key badges, foreign-key arrows, and per-table detail panels
Test internet ping, download speed, and upload speed in your browser with a live gauge, connection details, and same-origin Mbps measurements.
