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A focused, browser-only toolkit for the work between writing code: format, inspect, convert, generate, and get back to building.
✓ 43 focused utilities✓ No sign-up✓ Your data stays local
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{}JSON FormatterFormat, validate, and minify JSON data.›.*Regex PlaygroundTest patterns with live matches and groups.›↗URL Encode / DecodeEncode or decode URL components safely.›
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{}JSON FormatterFormat, validate, and minify JSON data.Data›.*Regex PlaygroundTest patterns with live matches and groups.Text›↗URL Encode / DecodeEncode or decode URL components safely.Web›⌁URL ParserInspect protocol, host, path, and parameters.Web›?Query String ParserTurn URL parameters into readable JSON.Web›◇JWT DecoderInspect token headers and payloads locally.Security›⌘SHA-256 HashCreate a cryptographic checksum locally.Security›✦Password GeneratorCreate strong random passwords in-browser.Security›#UUID GeneratorGenerate v4 UUIDs in batches.Data›⋮Random String GeneratorGenerate random hexadecimal strings.Data›◷Timestamp ConverterConvert Unix timestamps and ISO dates.Time›◴Cron ExplainerUnderstand standard five-part cron expressions.Time›64Base64 StudioEncode strings to Base64 without uploads.Data›◉Data URL GeneratorTurn text into a portable data URL.Web›⇣CSV to JSONConvert simple CSV rows to JSON objects.Data›⇡JSON to CSVExport JSON arrays as spreadsheet-ready CSV.Data›⇄Text DiffCompare two snippets, line by line.Text›AaCase ConverterConvert text to camel, snake, kebab, and more.Text›/Slug GeneratorCreate clean URL slugs from text.Text›≡Text StatisticsCount characters, words, lines, and reading time.Text›</>HTML Escape / UnescapeSafely encode or decode HTML entities.Web›<>HTML Parser & CSS SelectorParse HTML locally and test CSS selectors.Web›U+Unicode InspectorSee code points for every character.Text›◐Color ConverterConvert HEX colors to RGB and HSL.Web›↔CSS Unit ConverterConvert px values into rem and em.Web›▤SQL FormatterMake compact SQL queries easier to read.Data›¶Lorem Ipsum GeneratorGenerate placeholder text for interfaces.Text›TSJSON to TypeScriptInfer TypeScript interfaces from JSON samples.Data›Y:JSON ↔ YAMLConvert configuration data between JSON and YAML.Data›<>JSON ↔ XMLConvert structured JSON and XML locally.Data›MDMarkdown PreviewWrite Markdown and preview safe rendered HTML.Text›▧Image to Base64Create data URIs from local image files.Web›▦QR Code GeneratorGenerate a downloadable QR code for text or URLs.Web›⚿.env → K8s SecretTurn environment variables into Kubernetes Secret YAML.Security›rwxChmod CalculatorTranslate Linux numeric and symbolic permissions.Security›1,0CSS SpecificityCalculate the specificity of a CSS selector.Web›\\String Escape / UnescapeEscape strings for JavaScript, JSON, HTML, and XML.Text›T:JSON ↔ TOMLConvert structured configuration between JSON and TOML.Data›▣Docker Run → ComposeTurn common docker run commands into Compose YAML.Web›⌁cURL → Fetch / AxiosGenerate browser request code from a cURL command.Web›IPIPv4 Subnet CalculatorCalculate network, range, mask, and usable hosts from CIDR.Web›200HTTP Status CodesLook up common HTTP response codes and their meaning.Web›UAUser-Agent ParserIdentify browser, operating system, and device from a user agent.Web›
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