Base64 text encoder and decoder
Convert UTF-8 text and Base64 in this browser. Input and output are not uploaded or stored.
Text only, up to 64 KB after UTF-8 encoding.
What Base64 does
Base64 represents bytes as ASCII characters. It is useful in MIME and development workflows, but it is not encryption.
Text and standard Base64 only
This tool handles UTF-8 text and standard Base64, not files, Base64URL or secret protection.
Local conversion
Conversion starts only after you click a button. Nothing is sent to a server, URL, storage or analytics.
Frequently asked questions
Does this tool send my input to a server?
No. The tool runs in this browser after you choose to use it. Your pasted content or generated result is not added to URLs, storage, analytics or server requests.
Does a clean result guarantee that an email or account is safe?
No. These tools explain technical clues and reduce routine risk, but they cannot replace your judgment, malware protection, account security controls or advice from a qualified security professional.
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