Text & Dev Tools

Encoders, formatters and parsers for developers — Base64, JSON, YAML, JWT, regex, cron and more.

19 tools

Base64 Encoder & DecoderEncode text to Base64 or decode Base64 back to text, with full UTF-8 support.
URL Encoder & DecoderPercent-encode text for URLs or decode an encoded URL component.
JSON FormatterPretty-print or minify JSON and catch syntax errors.
Case ConverterChange text to UPPERCASE, lowercase or Title Case.
Roman Numeral ConverterConvert numbers 1–3999 to Roman numerals and back, rejecting invalid numerals.
Morse Code TranslatorTranslate text to International Morse code and back.
NATO Phonetic AlphabetSpell text with the NATO phonetic alphabet (Alfa, Bravo, Charlie…) and back.
Word CounterCount words, characters, sentences, paragraphs and lines.
Text ReverserReverse text character by character and check whether it is a palindrome.
Markdown to Plain TextStrip Markdown formatting and keep the plain text.
CSV to JSON ConverterTurn CSV with a header row into a JSON array, with quoted fields handled.
SHA Hash GeneratorGenerate SHA-1, SHA-256 and SHA-512 hashes of text in your browser.
Lorem Ipsum GeneratorGenerate 1–10 paragraphs of lorem ipsum placeholder text.
Unix Timestamp ConverterConvert Unix timestamps (seconds or milliseconds) to dates, and dates to timestamps.
JWT DecoderDecode a JSON Web Token's header and payload (it does not verify the signature).
Regex TesterTest a JavaScript regular expression against text and see every match and group.
JSON ↔ YAML ConverterConvert JSON to YAML and YAML to JSON, with errors reported instead of data dropped.
Cron Expression ParserExplain a 5-field cron expression in plain English.
IP Address ToolsMap IPv4 to IPv6 and back, and calculate subnet details from CIDR notation.