Developer
The formatting, decoding and checking jobs that interrupt everything else: pretty-printing JSON, reading what is inside a JWT, testing a regular expression, working out what a cron line actually does, hashing some text. Each opens instantly and runs on your own machine — and each is also a REST endpoint, so you can call the same code from a script or from an AI assistant.
16 tools and counting
What Is My IPWhat's my IP — the address the internet sees, and where it thinks you are.XML FormatterAn XML formatter that indents, minifies and checks a document in your browser.Base64 Encoder & DecoderBase64 encode and decode text instantly, with full Unicode support.URL Encoder & DecoderA URL encoder and decoder for links and query strings, percent-encoded properly.ASCII TableThe full ASCII table, with the control codes explained rather than left blank.Binary TranslatorA binary translator both ways — binary to text, text to binary, hex and decimal too.Cron Expression ParserRead a cron expression in plain English, and see exactly when it will next run.JWT DecoderA JWT decoder that inspects JSON Web Tokens safely.Subnet CalculatorA subnet calculator that gets /31 and /32 right, which most do not.Regex TesterA regex tester for regular expressions, run safely against your own text.Timestamp ConverterA Unix timestamp converter — timestamps to dates, and dates back to timestamps.JSON FormatterA JSON formatter that validates and beautifies instantly — or minifies.UUID GeneratorA UUID generator for random v4 identifiers, instantly.Internet Speed TestAn internet speed test that keeps the history — download, upload, ping and jitter, measured properly.Regex ExplainerA regex explainer: paste a pattern and read what every part of it does, in English.SQL FormatterAn SQL formatter for 21 dialects — paste unreadable SQL, get it laid out, nothing uploaded.