Is my text uploaded anywhere?

No. Encoding and decoding happen locally in your browser.

Does it support URL-safe Base64 (Base64URL)?

Yes — toggle URL-safe to use the '-' and '_' alphabet without padding, for tokens and URLs.

Yes — accented characters and emoji round-trip correctly in both directions.

Base64 Encoder & Decoder

Live

Encode and decode Base64 text.

All generated data is fictional and intended for development, testing, QA, prototyping, and automation only. Do not use it for fraud, impersonation, or illegal activity.

SGVsbG8sIENvZGVUb29sc0h1YiEg8J+Hp/Cfh7c=

About this tool

Encode text to Base64 (or Base64URL) and decode it back, fully UTF-8 safe. Runs entirely in your browser — nothing is uploaded.

How it works

Paste your text (or Base64) into the input.
Choose Encode or Decode, and toggle URL-safe (Base64URL) if needed.
Copy the result — fully UTF-8 safe and running locally in your browser.

Example output

SGVsbG8sIENvZGVUb29sc0h1YiEg8J+Hp/Cfh7c=

Frequently asked questions

Is my text uploaded anywhere?: No. Encoding and decoding happen locally in your browser.
Does it support URL-safe Base64 (Base64URL)?: Yes — toggle URL-safe to use the '-' and '_' alphabet without padding, for tokens and URLs.
Is it UTF-8 safe?: Yes — accented characters and emoji round-trip correctly in both directions.

Related tools

JWT Decoder URL Encode / Decode

Configuration

About this tool

How it works

Example output

Frequently asked questions

Related tools