Base64 Encode and Decode JSON

Encode JSON objects to Base64 and decode Base64 strings back to JSON. Essential for JWT payloads, API tokens, and data transport. Free online Base64 JSON tool.

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What is URL-safe Base64 encoding?

Standard Base64 uses + and / characters which have special meaning in URLs. URL-safe Base64 replaces these with - and _ respectively, and omits trailing = padding. This variant is used in JWTs and URL parameters. Our tool handles both standard and URL-safe encoding automatically.

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