Base64 Encoder / Decoder
PopularConvert between plain text and Base64. Supports UTF-8 and works entirely offline in your browser.
Last updated June 2025 2 min read Works in browser Privacy first
Base64 Encoder / Decoder
UTF-8-safe text encoding plus drag-and-drop file uploads. Live image preview when decoding.
Valid
Max 5 MB — files never leave your browser.
SGVsbG8sIFRvb2xNaW50IQ==
Steps
How to use
- Toggle Encode or Decode mode.
- Type or paste your text.
- Copy the result to your clipboard.
Why you’ll love it
Benefits
Free forever
No trials, no paywalls, no ads inside the tool.
Zero friction
No sign up, no email, no cookies you didn’t ask for.
Fast by design
Interactions render in under 200ms on modern devices.
In practice
Examples
- Encode a JWT payload preview.
- Decode a data URI to inspect its contents.
Tips
Pro tips
- UTF-8 is handled automatically. Emoji round-trip losslessly.
- For URL-safe Base64, replace + with - and / with _.
Watch out
Common mistakes to avoid
- Confusing Base64 with encryption — Base64 is encoding, not security.
Frequently asked questions
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