Encode and decode Standard Base64 and Base64URL, with strict validation and lenient padding repair.
Open toolTools
Browser-based tools for encoding, data conversion, and security checks.
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Browse by taskEncoding and dataCommon encoding, byte, and structured data conversions.
Percent-encode or decode URL parameters, full URLs, and form values for batch debugging and report snippets.
Open toolSecurity and digestsToken parsing, digests, signatures, and web security checks.
Decode JWT header and payload, with optional pasted RSA JWK or JWKS public-key checks for RS256, RS384, and RS512.
Open toolParse Cookie and response cookie headers, then review Secure, HttpOnly, SameSite, Domain, Path, Expires, Max-Age, and Partitioned.
Open toolAnalyze pasted HTTP response headers for common security headers and response cookie attributes.
Open toolAnalyze pasted CORS response headers, with structured tables, policy summaries, and common risk hints.
Open toolLook up CSP sandbox directive behavior, iframe sandbox tokens, allow-* combinations, popups, downloads, and navigation limits.
Open toolCalculate SHA-1, SHA-256, SHA-384, and SHA-512 digests with Web Crypto for UTF-8, Hex, Base64, and Base64URL byte input.
Open toolCalculate HMAC with Web Crypto for webhook and API signature debugging, presets, and complete analysis verification reports.
Open toolLook up webhook signature headers, raw-body rules, timestamp and replay checks, payload joining, and server-side validation recipes without secret input.
Open toolNetwork and debuggingHelpers for URLs, addresses, HTTP behavior, and network troubleshooting.
Parse URLs for OAuth redirects, signed URLs, and complex query parameter debugging.
Open toolText processingFormat, transform, compare, and inspect text, logs, and data files.
Format and minify JSON, with a tree view, node counts, and path navigation.
Open tool