Client-side tools
whoamiShows your IP and HTTP headers as seen by the server.Shippedurl-inspectParses a URL into protocol, host, path, query and hash.Shippedbase64Encode and decode text in both directions, standard and url-safe.Shippedjwt-decodePaste a token, get header, payload, exp and iat in a readable form.ShippeduuidGenerate UUID v4 and v7 with one-click copy.ShippedhashCompute MD5, SHA-1, SHA-256, SHA-512 and bcrypt hashes.Shippedscreen-infoScreen size, window dimensions, browser language and device capabilities.Shipped
timestampConvert Unix, ISO and human-readable dates across time zones.Planned
json-formatValidate, format and minify JSON; convert JSON to YAML.Planned
regex-testerMatch a regex against text with flags and group highlighting.Planned
number-baseConvert numbers between dec, hex, bin and oct.Planned
cron-explainTranslate cron expressions to plain text and the next run time.Planned
case-converterConvert between camelCase, snake_case, kebab-case and Title Case.Planned
markdown-previewLive Markdown preview with HTML export.ShippeddiffCompare two texts with side-by-side highlighting.ShippedqrGenerate a QR code from text, fully client-side.ShippedcolorConvert hex, rgb and hsl, plus WCAG contrast checks.ShippedgradientBuild a CSS gradient with a live preview.Planned
loremGenerate Lorem Ipsum and fake data: names, emails, IPs.Planned
metricsAI usage metrics: tokens by model, cost, daily breakdown.ShippedthemesColor scheme preview page with swatches and details.ShippedServer-side tools
dnsResolve A, AAAA, MX and TXT records for a domain.Shippedip-infoGeo and ASN info for an IP address.Shipped
pingRound-trip latency to the server.Planned
echoPOST /echo returns body and metadata, handy for webhook testing.Planned
request-binDisposable URL that captures incoming requests and shows them live.Planned
Workflow
ArchitectClaude Opus
BackendDeepSeek V3
FrontendDeepSeek V3
Review & deployClaude Sonnet
DesignGPT-5.4-nano
RouterDeepSeek V4 Flash