Tool Nova / Collection
Developer Tools
Format, convert, inspect, and test code snippets, data formats, timestamps, tokens, and developer values locally.
Regex TesterTest JavaScript regular expressions against sample text and inspect matches.ConvertersOpen ↗Markdown EditorWrite Markdown and preview rendered HTML instantly.ConvertersOpen ↗JWT DecoderDecode JWT header and payload locally without sending tokens to a server.ConvertersOpen ↗XML FormatterFormat compact XML into readable, indented XML locally in your browser and copy the cleaned output.ConvertersOpen ↗YAML JSON ConverterConvert simple YAML to JSON or JSON to YAML in your browser.ConvertersOpen ↗Timestamp ConverterConvert Unix timestamps to readable local and UTC dates.ConvertersOpen ↗Number Base ConverterConvert numbers between binary, octal, decimal, and hexadecimal.ConvertersOpen ↗Cron Expression GeneratorBuild a standard five-part cron expression and plain-English description.ConvertersOpen ↗Chmod CalculatorConvert file permission checkboxes into chmod octal and symbolic notation.ConvertersOpen ↗Cookie ParserParse a Cookie or Set-Cookie header into readable key-value rows.ConvertersOpen ↗HTTP Status Code LookupLook up common HTTP status codes and what they usually mean.ConvertersOpen ↗REST ClientSend a simple browser fetch request to CORS-enabled APIs and inspect the response.ConvertersOpen ↗CSS Unit ConverterConvert pixels into rem, em, vw, and vh values using custom root font size and viewport dimensions.ConvertersOpen ↗CSS Minifier & BeautifierMinify or beautify CSS locally for cleanup, inspection, and copying into projects.ConvertersOpen ↗SQL FormatterFormat common SQL queries with readable line breaks around clauses, joins, commas, and conditions.ConvertersOpen ↗Border Radius GeneratorAdjust each corner visually and copy a CSS border-radius value for cards, buttons, and panels.ConvertersOpen ↗