Local developer utility

OAuth PKCE Generator

Generate a cryptographically random verifier and S256 code challenge. Your input stays in your browser while you work.

OAuth PKCE Generator🔒 Processed locally

How to use OAuth PKCE Generator

Complete the labeled fields above, choose an action, and inspect the result before copying or downloading it.

Processing runs locally in this browser. No input is uploaded or sent to a conversion service.

HTML Entity Encoder — Escape text for inclusion in HTML text content.
HTML Entity Decoder — Decode HTML entities into plain text without executing markup.
HMAC Generator — Generate HMAC-SHA-256, SHA-384, or SHA-512 using a local secret.
Base64 Encoder / Decoder — Encode and decode UTF-8 text locally in your browser.