Encoding Tools — Base64, URL, HTML, JWT, Hash & HMAC

Paste-local Base64, URL, HTML entity, JWT, hash and HMAC utilities — client-side only. Pair with the PHP serialize tool for WordPress-style blobs or the JSON Formatter for structured payloads.

  • Encode or decode Base64, URL components and HTML entities without CLI flags on shared machines.
  • Inspect or mint JWT segments, generate SHA digests and HMAC signatures for dev workflows.
  • Convert pasted images to Base64 data URLs for inline HTML or CSS snippets.

Back to Encoding on the hub

Base64

Encode Unicode text or decode Base64 without juggling CLI flags on shared machines.

URL encode

Percent-encode query components or full URIs — encodeURIComponent, encodeURI, or form scopes.

URL decode

Decode percent-encoded query strings and URI components back to readable text.

HTML entities

Escape or unescape HTML entities for attributes, text nodes and legacy markup.

Image to Base64

Drop an image file and copy a Base64 data URL for inline HTML or CSS.

JWT Encode

Build unsigned or signed JWTs from header and payload JSON — local only, no issuer fetch.

JWT Decode

Decode JWT header and payload segments without verifying signatures or calling an issuer.

Hash Generator

Generate SHA-256, SHA-512, MD5 and other digests from pasted text in the browser.

HMAC Generator

Compute HMAC-SHA256 and related MACs from a secret key and message — client-side only.