Base64 Encoder

Convert text, JSON and API values into Base64 encoding instantly.

Browser Processing Free Forever No Signup Mobile Friendly

🔒 Your Base64 data is processed locally. Nothing is stored.

Text Input

Base64 Output

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Encoding Tool

Free Base64 Encoder for Text, JSON and API Data

Convert text, JSON strings, credentials and API values into Base64 format for development, testing and debugging workflows.

Base64 encoder text to Base64 JSON to Base64 encode Base64 online

What is Base64 Encoding?

Base64 encoding converts data into an ASCII-safe string. It is commonly used when data needs to move through systems that expect plain text, such as HTTP headers, emails, configuration values and API payloads.

Base64 is encoding, not encryption. Anyone with the encoded value can decode it, so it should not be used as a security layer.

Key Features

Text to Base64

Encode plain text, JSON snippets or API values into Base64 output.

Quick Decode Option

Switch from encoding to decoding when validating a value.

Size Analysis

Compare input and output character counts.

Copy Output

Copy encoded values into API clients, code or documentation.

Common Use Cases

Prepare basic auth test values

Encode JSON snippets

Debug API headers

Inspect configuration values

Create documentation examples

Test encoded payloads

How to Use This Tool

1 Paste text or JSON into the input editor.
2 Click Encode Base64.
3 Review the generated Base64 output.
4 Copy the result for your test or development workflow.

Frequently Asked Questions

Is Base64 secure?

No. Base64 is reversible encoding and should not be treated as encryption.

Can I encode JSON?

Yes. Paste JSON as text and encode it into a Base64 string.

Why does Base64 output become longer?

Base64 usually increases data size because binary-safe data is represented as text.