Developer tools
Formatters, encoders, and converters for everyday development work.
DeveloperToken CounterCount tokens exactly, check the context window, estimate the cost.
DeveloperJSON FormatterFormat, beautify, and validate JSON right in your browser.- DeveloperText Diff CheckerCompare two texts and see exactly which words changed.
DeveloperBase64 Encoder / DecoderEncode text, images and files to Base64, and decode them back.
DeveloperTimestamp ConverterConvert Unix timestamps to dates and back, in any unit.
DeveloperSlugifyTurn any text into a clean URL slug, one or a whole list.
DeveloperRegex TesterTest a regular expression live and see what every part does.
DeveloperHash GeneratorHash text or files, and check a download really is what it claims.
DeveloperCSV to JSON ConverterTypes decided per column, so ZIP codes keep their zeros.
DeveloperJWT DecoderClaims explained, and the nbf claim behind mystery 401s.
DeveloperSQL FormatterFormats your query, and warns before a DELETE without WHERE.
DeveloperSchema Markup GeneratorJSON-LD that says whether Google still shows that rich result.
DeveloperCron Expression GeneratorReads your cron line and warns about the traps it hides.
DeveloperYAML to JSON ConverterConverts both ways, and says what changed meaning.
DeveloperMeta Tag GeneratorMeasures in pixels, and drops the tags that do nothing.