Base64 Encode / Decode
Convert text to and from Base64 — Unicode-safe, no uploads.
See how it works
Watch a quick simulation of this tool in action — no file needed.
How to use Base64 Encode / Decode
Follow these steps — everything happens instantly in your browser.
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Step 1. Pick the mode: Encode (text → Base64) or Decode (Base64 → text).
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Step 2. Type or paste your input — the output updates live.
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Step 3. Use the swap button to feed the output back as input.
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Step 4. Click Copy to grab the result.
Why use this tool
Private by design
All processing happens locally in your browser. Open DevTools → Network and you'll see zero file uploads. Ever.
Instant
No upload wait, no queue, no server round-trip. Results appear the moment you drop a file.
Free & unlimited
No accounts, no watermarks, no daily caps. Use it as many times as you like, forever.
Works everywhere
Desktop, tablet or phone — every tool is responsive and installable as a PWA for offline use.
Frequently asked questions
Everything you might want to know about base64 encode / decode.
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