Base64 / URL Encoder & Decoder

Use this free online Base64 / URL Encoder & Decoder to convert API payloads, tokens, query strings, callback URLs, and integration test values.

Common encoding and decoding tasks

Encode text to Base64 or decode Base64 back to UTF-8 text.
Use URL-safe Base64 for JWT-like payloads, signed URLs, and values that must avoid plus and slash characters.
Encode and decode URL components containing spaces, accents, reserved characters, and query-string values.
Validate Base64 input with strict decoding so malformed values are reported clearly.

Privacy note: Submitted values are processed only to produce the requested result and are not stored by this tool.

Operation

Base64 encode

Base64 decode

Base64 URL-safe encode

Base64 URL-safe decode

URL encode

URL decode

Input text

Paste the text, Base64 value, or URL component to process.