tooly

Base64 encoder and decoder

Convert text to Base64 and back, or turn any file into a Base64 data URI for embedding. Unicode is handled correctly and everything runs locally in your browser.

Everything runs in your browser — nothing is sent anywhere

How to use

  1. 1

    Choose Encode or Decode.

  2. 2

    Type or paste your text, or pick a file to encode.

  3. 3

    Copy the result.

FAQ

Is my data uploaded?

No. Encoding happens in your browser; text and files never leave your device.

What is URL-safe Base64?

A variant that uses - and _ instead of + and / and drops padding, so the result can be placed in URLs and file names.

Does it work with emoji and non-Latin text?

Yes. Text is encoded as UTF-8 first, so any Unicode text round-trips correctly.

What does encoding a file produce?

A data URI (data:image/png;base64,…) that you can paste directly into HTML or CSS.

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