Developer
XML Formatter/Validator
Use an XML formatter/validator to pretty print XML, validate structure, and inspect parser errors for feeds, configs, exports, and sitemaps in the browser.
Tool category
Developer tools
Browse all developer tools in one indexed category hub.
This hub page links every developer tool together so search engines and users can move between closely related pages.
Developer
Cron Expression Builder
Use a cron expression builder to create cron schedules, inspect field meanings, and explain recurring job timing in plain English.
Developer
Unix Timestamp Converter
Use a Unix timestamp converter to switch between timestamps, UTC time, local time, ISO date strings, and epoch values in the browser.
Developer
JSON Schema Validator
Use a JSON Schema validator to validate JSON payloads against schema rules, required properties, nested objects, and data formats in the browser.
Developer
HTML Entity Encoder/Decoder
Use an HTML entity encoder/decoder to convert text between raw characters and HTML entity strings for templates, markup, CMS content, and debugging.
Developer
UUID Generator
Use a UUID generator to create v4 UUIDs, GUIDs, and random unique IDs for records, fixtures, and test data.
Developer
JSON Converter
Use a JSON converter to convert JSON files, arrays, and nested JSON data into CSV, XML, YAML, or compact string output.
Developer
XML Converter
Use an XML converter to turn XML content into JSON, CSV, YAML, or compact string output for feeds, exports, and apps.
Developer
YAML Converter
Use a YAML converter to turn YAML content into JSON, CSV, XML, or compact string output for configs and manifests.
Developer
Base64 Encoder/Decoder
Use a Base64 encoder/decoder to convert text to Base64, decode Base64 strings, and inspect encoded data in the browser.
Developer
JSON Formatter/Validator
Use a JSON formatter/validator to pretty print JSON, validate syntax, and minify JSON in the browser.
Developer
URL Encoder/Decoder
Use a URL encoder/decoder to convert links, query strings, and text between readable and percent-encoded formats.
Developer
HTML Viewer
Use an HTML viewer to preview HTML code online in a sandboxed browser frame and inspect fragments or full documents quickly.
Developer
HTML Link Code Generator
Use an HTML link code generator to create anchor tags with titles, classes, aria labels, and target blank links.
Developer
HTML Table Generator
Use an HTML table generator to turn tabular text into semantic table markup with headers and captions.
Developer
Regex Tester
Use a regex tester to check patterns, flags, capture groups, and match results against sample text in the browser.
Developer
Robots.txt Generator
Use a robots.txt generator to create crawl rules, sitemap entries, and simple robots files for websites and SEO workflows.