Developer and data
The everyday desk tools: formatting, encoding, identifiers, networks.
Formatters, encoders, identifiers and network arithmetic: the small jobs a desk needs a dozen times a day. Each one keeps what other tools drop, long numbers, key order, emoji inside base64, and when a document is wrong it says where and why rather than only that it is.
JSON DiffCompare two documents structurallyXML FormatterIndent and check in the same momentSubnet CalculatorCIDR, masks, host ranges and splittingBase64 Encoder & DecoderEncode or decode, the direction is detectedUUID Generatorv4 and time-ordered v7, plus an inspectorSQL FormatterOne clause per line, subqueries nestedJSON FormatterFormat and validate, with errors that name the causeIBAN ValidatorCheck a bank number's country, length and checksumJWT DecoderRead a token's claims and expiry, never transmittedMAC Address LookupVendor from the first three bytes, offlineNumber Base ConverterAny base from 2 to 36, exact at any sizeJSON to JSON SchemaInfer a draft 2020-12 schema from a sampleMeta Tag GeneratorTitle, description and social tags, ready to pasteUser Agent ParserBrowser, engine, OS and device from a UA stringFavicon GeneratorEvery size, and a real .ico fileRAID CalculatorUsable capacity for every RAID levelIP Address LookupWhich network an IP belongs to, dated