Paste it. Understand it.

Decode and verify JSON Web Tokens (JWT) on the spot. View header, payload, and signature details with easy-to-read timestamps

Decode SAML assertions from Base64-encoded XML

Decode X.509 SSL/TLS certificates in PEM format

Parse Set-Cookie headers and document.cookie strings

Validate, format, minify, and query JSON using JSONPath — all in your browser with instant error feedback

Format, validate, and query XML documents with XPath support

Parse CSV data into a visual table with configurable delimiter and column stats

Parse and convert YAML to JSON and back with validation

Parse TOML configuration files and convert to JSON

Parse INI files into sections and key-value pairs

Test regular expressions with live match highlighting, token-by-token breakdowns, and sample string generation

Parse cron expressions into human-readable schedules and preview next execution times

Validate JSON data against JSON Schema definitions

Decode and encode Base64, parse URL-encoded strings, preview Base64 images, and decode JWT header or payload segments

Parse any URL into its components — scheme, host, port, path, query parameters, and fragment

Encode and decode HTML entities — convert between special characters and entity references

Convert between hexadecimal and text — supports configurable delimiter and prefix options

Convert between Unicode escapes and readable text

Encode and decode Quoted-Printable format used in email

Parse user-agent strings to detect browser, OS, device type, and rendering engine

Parse raw HTTP headers into a structured table with cookie extraction

Parse cURL commands and generate fetch() code equivalents

Parse and analyze IPv4 and IPv6 addresses with CIDR subnet info

Look up MIME types by file extension and vice versa