Base64 Encode / Decode
Convert plain text to Base64 representation or decode Base64 strings back to their original text format with full UTF-8 support.
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Help & answers
Frequently Asked Questions
What is Base64 encoding?
Base64 converts binary data into a printable ASCII text string using only letters, numbers, and a few symbols. It is used when binary content needs to pass safely through text-only systems like JSON APIs and HTTP headers.
Is Base64 the same as encryption?
No. Base64 is encoding, not encryption. Anyone can decode a Base64 string back to the original content in seconds. Never use it to hide sensitive data — use proper encryption for that.
Can I decode a JWT token with this tool?
Yes. Copy the middle section of a JWT token — the payload — and decode it to read the claims such as user ID, roles, and expiry time in plain JSON.
Does this tool store my encoded or decoded data?
No. Encoding and decoding runs in your browser and nothing is uploaded or saved by Alexonic Tools.
Important disclaimer: Alexonic Tools is completely free to use. There is no charge, and we do not save tool inputs or generated results. We value customer privacy and keep building and fixing each day. Always verify important financial, payroll, legal, tax, business, or production-code results before relying on them. If you see an issue, need a tool, or require an update, send feedback to the developer.