Base64 Encoder/Decoder

Use this free Base64 encoder and decoder to easily convert between plain text and Base64-encoded strings. This tool is perfect for decoding API responses. No need to sign up — just paste your data and convert instantly.

Base64 Converter

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How to Use the Base64 Decode Tool:

You can use this tool to decode Base64-encoded strings, or to convert Base64 text strings back to their original binary string. Just paste your data and copy the result. If you need to convert images to Base64 you can use this tool.

Data Conversion
Convert text strings to their original binary form, useful for handling encoded text data.
Debugging
Decode Base64 data when troubleshooting or analyzing web resources.

How Does the Base64 Tool Work?

Base64 encoding converts binary string into a text format that can be safely transmitted over text-based protocols like HTTP, email, and more. This process ensures that the data remains intact and prevents corruption during transmission.

Data IntegrityEnsures that binary data, special characters, and non-ASCII symbols are correctly transmitted over the internet without corruption.
Data EmbeddingAllows embedding binary data within text-based formats like JSON, XML, and HTML, making it useful for web applications and APIs.
CompatibilityFacilitates easier data sharing and exchange between different systems and platforms that handle text-based data.
ASCII DecodingConverts ASCII strings back to their original binary form, ensuring accurate data reconstruction.

Using Base64 in JavaScript:

javascript

Encoding Example

Encoding text to Base64 using JavaScript's built-in btoa() function

let text = "Hello, world!";

let encoded = btoa(text);

console.log(encoded); // Outputs: "SGVsbG8sIHdvcmxkIQ=="

SGVsbG8sIHdvcmxkIQ==

javascript

Decoding Example

Decoding Base64 back to text using JavaScript's built-in atob() function

let encoded = "SGVsbG8sIHdvcmxkIQ==";

let decoded = atob(encoded);

console.log(decoded); // Outputs: "Hello, world!"

Hello, world!

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This Base64 tool makes encoding and decoding simple, but collecting actionable feedback about your tools and applications requires a dedicated solution. Userback is a visual feedback platform that streamlines how teams gather and act on user input. With one-click capture, it automatically collects screenshots, browser information, console logs, and network activity—everything you need to understand and resolve issues quickly. When users encounter problems with Base64 encoding workflows or want to suggest improvements to this tool, Userback enables them to submit detailed feedback that includes all the technical context your development team needs, delivered in a single shareable report.

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Frequently Asked Questions

Can you decode Base64?

Yes, you can. Use this tool to decode online by pasting the text into the input box and copying the decoded output.

How to convert Base64 encoding?

Using our free online tool right here. Drop your file or text and get an ASCII string output that you can easily copy and use.

Can you encode Base64?

Yes, you can encode text using our online tool. Just paste your text and get the encoded result.

How to encode text to Base64 online?

Use our online tool by pasting your text into the input box and copying the output. In a few seconds, you’ll be effectively converting the characters to a web-safe format.

What is Base64?

It’s an encoding scheme used to convert binary data into a text format that can be safely transmitted over the internet, using a combination of ASCII characters.

What is the difference between encoding and decoding?

Encoding converts binary data to Base64 text format, while decoding converts Base64 text back to its original binary format.