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Developer · April 4, 2026 · 3 min read

How to Encode and Decode Base64 Online

How to Encode and Decode Base64 Online

Base64 encoding is used everywhere - from embedding images in HTML and CSS to encoding API authentication tokens. ToolForte's free Base64 tool handles encoding and decoding instantly in your browser.

Base64 turns binary data into safe ASCII text, making it indispensable for web development and API integration.
Developer working with encoding and data transformation
Developer working with encoding and data transformation
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Step 1: Open the Base64 Encoder

Go to the Base64 Encoder/Decoder tool on ToolForte. It handles both text and file encoding.

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Step 2: Enter Your Text or Upload a File

Type or paste the text you want to encode, or upload a file to convert it to a Base64 string.

Base64 encoded data used in API authentication
Base64 encoded data used in API authentication
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Step 3: Choose Encode or Decode

Select Encode to convert to Base64, or Decode to convert a Base64 string back to its original form.

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Step 4: Copy the Result

Copy the encoded or decoded output to your clipboard. Use it in your code, emails, or wherever you need it.

Key takeaway

Copy the encoded or decoded output to your clipboard.

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Base64 is a fundamental encoding format in web development. With ToolForte, you can encode and decode without installing any software or sending data to external servers.