Base64 Encode/Decode v1.0
Encode and decode Base64 strings instantly. Essential for working with data URIs, API authentication, and embedded content.
No data uploaded – runs 100% in your browser
Used by developers in 120+ countries
v1.0 • Updated Nov 2025
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How to Use the Base64 Encode/Decode
- Enter text or paste content in the input field
- Select 'Encode' or 'Decode' mode
- View the result instantly
- Copy the output with one click
What is Base64 Encode/Decode?
Base64 encoding converts binary data into ASCII text format. It's commonly used for embedding images in HTML/CSS, sending data through APIs, and storing binary data in text-based formats.
Why Use a Base64 Encode/Decode?
- Essential for data URI generation
- Required for many API authentications
- Encode images for inline HTML/CSS
- Works with any text or binary data
- Instant encode/decode switching
Frequently Asked Questions
What is Base64 encoding?
Base64 encoding converts binary data into a text format using 64 printable ASCII characters, making it safe for text-based systems.
Is this Base64 tool free?
Yes, this Base64 encoder/decoder is completely free and runs entirely in your browser.
Is my data secure?
All processing is done locally in your browser. No data is uploaded or stored.