Encoder & Hash Tool

Base64, URL encoding/decoding, and cryptographic hashing — all client-side, nothing sent to servers

Convert text to and from Base64 and URL encoding, or generate cryptographic hashes of any input. All processing happens in your browser, so the data you paste is never uploaded to a server. More free security tools.

Base64

URL Encode

HTML Entities

Hash (SHA)

Hex / Binary

JWT Encode

Plain Text / Input

Base64 Output

URL-safe Base64

URL-safe variant will appear here…

Input

URL Encoded

URL Decoded

encodeURIComponent (strict)

Plain Text / HTML

HTML Entities Encoded

Decoded (Entities → Text)

Uses the Web Crypto API — fully client-side, no data leaves your browser.

Input Text

SHA-1

—

SHA-256

—

SHA-384

—

SHA-512

—

Input Text

Hexadecimal

Binary

Octal

Generates a signed JWT using HMAC-SHA256. For demonstration — do not use this secret in production.

Header (JSON)

Payload (JSON)

Secret Key

Generated Token

Need help securing data encoding and cryptography in your applications?

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