FREE TOOL · DEVELOPER

Encode and decode Base64 (UTF-8 safe)

Base64 turns bytes into plain text so they can travel in URLs, emails and JSON. It is encoding, not encryption — anyone can decode it. Encode, decode, then crack the challenge message.

⏱ 5–10 min · Runs in your browser · No signup

You will practise

What Base64 is (and is not)
UTF-8 vs bytes
URL-safe Base64 variants

⚙Use the tool

🔒 Runs entirely in your browser. Nothing is uploaded.

Text or Base64

Mhoro! Sawubona! Hello! 👋

URL-safe

Result

✓Practice challenge

Decode this message and type it below:

S2V5cyBiZWxvbmcgaW4gc2VjcmV0cywgbm90IGluIGNvZGUu

Your answer

Questions people ask

Is Base64 secure?

No. It hides nothing — it is a reversible encoding. Never use it to protect passwords or keys.

What is URL-safe Base64?

A variant that replaces + and / with - and _ and drops = padding so the text is safe in URLs.

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