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Cifrivo
Developer

Base64 encode text

Encode Unicode text as Base64 instantly in the browser and copy or download the exact result.

Processed locallyYour files never leave your device.

Everything is processed locally in your browser.

How it works

  1. Paste or type the source text.
  2. Press Encode.
  3. Copy the Base64 output or download it as a text file.
  4. Use Clear to remove both fields.

Practical example

The UTF-8 text Cifrivo ✓ becomes Q2lmcml2byDinJM=. Accented characters and emoji are encoded as UTF-8 bytes before Base64.

Formula and explanation

Base64 represents binary bytes using a safe alphabet of letters, digits, + and /. It is useful when a text-only format needs to carry bytes, such as a Data URI, MIME message or some API payloads.

Base64 is not compression and normally increases size by roughly one third, plus optional padding. It is also not encryption: anyone can decode it without a password or secret key.

Cifrivo converts the text to UTF-8 first, so international characters round-trip correctly. Encoding occurs entirely in this tab and the source is never included in analytics events.

Frequently asked questions

Is Base64 encryption?

No. Base64 is a reversible representation and provides no confidentiality or authentication.

Why is the output larger?

Every three input bytes become four Base64 characters, so size usually grows by about 33%.

Does it support emoji and accents?

Yes. The tool encodes Unicode text as UTF-8 bytes before producing Base64.

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Base64 decode

Decode valid Base64 into readable Unicode text with strict error detection and no upload.

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Image to Base64

Turn JPG, PNG, WebP or SVG images into raw Base64 or a ready-to-use Data URI.

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Base64 to image

Validate Base64 or a Data URI, detect its image type, preview it and download the file.