Base64 Encoder / Decoder
Free Base64 encoder and decoder — convert text to Base64 or decode Base64 back to text. Unicode-safe and runs in your browser.
Base64 Encoder / Decoder is a free online developer tool from FastDailyTools (Encode and decode Base64 strings instantly.). Free Base64 encoder and decoder — convert text to Base64 or decode Base64 back to text. Unicode-safe and runs in your browser. It runs entirely in your browser — no sign-up, no account, no email and no upload — and every result can be exported as a dated PDF report.
- ✔ Price: free, unlimited use, no rate limits
- ✔ Sign-up: not required
- ✔ Privacy: all math runs client-side, nothing is uploaded
- ✔ Export: one-click PDF report (2026 rates)
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How to use Base64 Encoder / Decoder
- Paste text or Base64.
- Choose encode or decode.
- Copy the result.
Frequently asked questions
What is Base64?
A way to encode binary data as ASCII text, commonly used in data URLs, JWTs, and email attachments.
Is Base64 encryption?
No — Base64 is encoding, not encryption. Anyone can decode it. Never use it to hide sensitive data.