Check BIMI DNS records and parse logo and authority directives to validate brand indicator setup for email clients - free to use.
Guided breathing exercises with animated visual cues. Practice Box Breathing, 4-7-8, Wim Hof, Deep Breathing, and Resonant Breathing with audio phase cues and session tracking.
Check a domain's CAA DNS records to see which certificate authorities can issue SSL certificates - free tool, no account required.
Build cURL commands with method, headers, query params, auth, and body. Generate copy-ready shell requests for APIs and debugging.
Check and parse the DMARC DNS TXT record for any domain to verify email authentication policy, alignment settings, and reporting addresses.
Parse raw email headers to trace routing path, verify SPF and DKIM authentication, detect delays, and debug email delivery issues.
Generate signed JWT tokens from JSON payloads using HS256, HS384, HS512, or alg none with instant token preview and copy support.
Verify JWT signatures online using a secret or public key for HS256, HS384, HS512, and RS256 tokens. Instantly confirm validity and expiry. Free, client-side tool.
Generate RSA and EC key pairs in PEM format for signing JWTs with RS256, PS256, or ES256 directly in your browser. Free, private, no signup required.
Generate a valid package.json file for npm projects. Configure name, version, scripts, license, author, module type, engines, and repository fields. Auto-derives bugs and homepage from GitHub URL. Free, browser-based.
Look up authoritative NS records for any domain and verify nameserver delegation with TTL details in one fast DNS query.
PDF metadata viewer shows page count, title, author, creation and modified dates straight from the file, all inside your browser. Free, no signup, no upload.
Generate OAuth 2.0 PKCE code verifiers and S256 code challenges instantly using the Web Crypto API. Build a ready-to-use authorization URL. Free, runs entirely in your browser.
Boost your productivity with the Pomodoro Technique. Customizable work and break intervals, session tracking, audio notifications, and focus statistics.
Search and discover 1,400+ free public APIs across 50+ categories. Filter by authentication type, CORS support, and HTTPS to find the perfect API for your next project.
SAML decoder that turns a SAMLRequest or SAMLResponse into readable XML in your browser. Handles URL encoding, Base64 and raw DEFLATE, then pulls out Issuer, ACS URL and NameID.
Generate live TOTP 2FA codes from a base32 secret key. Compatible with Google Authenticator and Authy. Supports 6/8 digits and 30/60s periods. Runs entirely in your browser.
Decode WebAuthn passkey attestation and assertion responses into readable flags, AAGUID, and COSE keys. Free client-side debugger, no signup, no data leaves your browser.