Visual & Testing Tools
Regex tester, diff checker, JSON/XML/HTML viewers, Markdown editor
Regex Tester
Test and debug regular expressions
Diff Checker
Compare two texts and highlight differences
JSON Viewer
View and explore JSON data
XML Viewer
View and explore XML documents
YAML Viewer
View and explore YAML data
HTML Viewer
View and preview HTML
Markdown Editor
Edit and preview Markdown with live preview
Markdown Preview
Preview Markdown as rendered HTML
JSON Path Tester
Test JSONPath expressions against JSON data
XPath Tester
Test XPath expressions against XML
Internet Speed Test
Test internet ping, download speed, and upload speed in your browser with a live gauge, connection details, and same-origin Mbps measurements.