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What Is Base64 Encoding?

Learn what Base64 encoding does, where it is used, and why it is not encryption.

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What Base64 does

Base64 represents binary or text data using a limited character set. It appears in data URLs, email payloads, API examples, tokens, and configuration snippets.

What it does not do

Base64 is encoding, not encryption. Anyone with the encoded text can usually decode it back to the original content.

Common mistakes

Do not publish encoded secrets, credentials, private keys, or confidential files just because the output looks unreadable. Treat Base64 strings as readable data.

FAQ

Why does Base64 sometimes end with equals signs?

Padding may be added so the encoded data aligns correctly.

Can images be Base64 encoded?

Yes, but large images create long strings that are hard to manage.

This guide is practical information, not a substitute for official rules, professional advice, or your own review before important use.

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