BASE64 TOOL
Encode and decode Base64 data instantly in your browser — 100% private, no server uploads.
Options
Output
History
Frequently Asked Questions
What format is the output?
Are there any usage limits?
Does it work offline?
Which browsers are supported?
How do I encode text to Base64?
How do I decode Base64 back to text?
Is my data sent to a server?
Why do I get a decoding error?
How to Use
Enter Input
Type or paste your input data into the provided field or configure the options.
Generate
Click the generate button to create your output instantly in the browser.
Copy or Download
Copy the result to your clipboard or download it for use in your project.
Choose Mode
Select Encode to convert text to Base64, or Decode to convert Base64 back to text.
Enter Input
Type or paste your text into the input box. The result updates automatically as you type.
Copy Result
Click the Copy button to copy the encoded or decoded result to your clipboard.
About the Base64 Tool
The Base64 Tool lets you encode plain text to Base64 format or decode Base64 strings back to readable text. All processing happens locally in your browser using the built-in btoa() and atob() functions — your data never leaves your device.
Base64 encoding is commonly used for embedding binary data in text formats like JSON, HTML, or URLs. This tool makes it easy to quickly encode or decode without any external dependencies or server calls.