TOOL
Base64 Encoder / Decoder
Encode text to Base64 and back. UTF-8 aware, with a URL-safe option. Runs locally.
Processing happens locally in your browser. Nothing you type is sent to BlackhawkHub.
How to use it
Choose encode or decode, type or paste your text, and the result appears with a copy button. It handles full UTF-8, so accented characters and emoji encode and decode correctly. The URL-safe option uses - and _ instead of + and / and strips padding.
Base64 is not security
Base64 turns binary data into text using 64 printable characters, so it can travel through systems that expect text (email, URLs, JSON, HTTP headers). It is not encryption: there is no key, and decoding is instant. A Basic authentication header (401) is base64, which is exactly why Basic auth is only safe over HTTPS. For protecting data, see encryption in transit; for verifying integrity, see hashing.
Frequently asked questions
Is Base64 encryption?
No. Base64 is an encoding that represents binary data as text; it is fully reversible with no key and provides no security whatsoever. Anyone can decode it instantly. It is used to carry binary safely through text-based systems, not to protect data. See hashing explained.
What is URL-safe Base64?
A variant that replaces the + and / characters (which have meaning in URLs) with - and _, and often omits the = padding. It is used in JWTs, URL parameters and filenames.