Base64 Converter

Encode and decode data to/from Base64 format with URL-safe options

Key Facts

Category
Conversion & Encoding
Input Types
textarea, select, checkbox
Output Type
text
Sample Coverage
4
API Ready
Yes

Overview

The Base64 Converter is a reliable utility designed to quickly encode plain text into Base64 format or decode existing Base64 strings back into readable text, supporting specialized requirements like URL-safe encoding and character set selection.

When to Use

  • •When you need to embed binary data or text strings into URLs or HTML without character corruption.
  • •When you are debugging API responses that return Base64-encoded payloads.
  • •When you need to prepare data for systems that require Base64-encoded authentication headers or configuration files.

How It Works

  • •Paste your source text or Base64 string into the input area.
  • •Select your desired operation: 'Encode' to transform text to Base64, or 'Decode' to revert it.
  • •Toggle optional settings like 'URL-Safe' for web compatibility or 'Add Line Breaks' for readability.
  • •Click the convert button to instantly generate your processed output.

Use Cases

Encoding sensitive configuration strings for use in environment variables.
Decoding Base64-encoded API responses to verify data integrity during development.
Formatting data for inclusion in data URIs for CSS or HTML images.

Examples

1. Encoding API Credentials

Web Developer
Background
A developer needs to include an 'Authorization' header in an API request using Basic Auth.
Problem
The credentials 'user:password' must be converted to Base64 format to be accepted by the server.
How to Use
Enter 'user:password' into the input field, select 'Encode', and click convert.
Outcome
The tool outputs 'dXNlcjpwYXNzd29yZA==', which can be directly copied into the request header.

2. Decoding URL Parameters

QA Tester
Background
A tester is investigating a bug where user data is passed through a URL parameter in Base64 format.
Problem
The tester needs to see the raw content of the parameter 'SGVsbG8gV29ybGQ=' to verify it matches the expected input.
How to Use
Paste 'SGVsbG8gV29ybGQ=' into the input, select 'Decode', and click convert.
Outcome
The tool displays the decoded text 'Hello World', confirming the data was transmitted correctly.

Try with Samples

base64, text
Hex/Unicode Encoding Format Samples
Examples of hex (\xXX) and unicode (\uXXXX) escape sequence encoding formats
matched family text
text
Text Case Format Samples
Examples of different text case formats: camelCase, snake_case, kebab-case, PascalCase, and more
matched family text
text
Nginx Log Parser Samples
Comprehensive Nginx log samples for testing log-parser tool, including access logs and error logs with various formats and scenarios
matched family text
text
Text with Date Samples
Text containing various date formats for testing date extraction and parsing
matched family text
text

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FAQ

What is Base64 encoding?

Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format, commonly used to transmit data over media that only support text.

What does the URL-Safe option do?

Standard Base64 uses '+' and '/' characters, which can cause issues in URLs. The URL-safe option replaces these with '-' and '_' to ensure the string remains valid in web addresses.

Can I decode any Base64 string?

Yes, as long as the string is valid Base64. If the input is malformed or contains invalid characters, the tool will notify you of the error.

Does this tool support different character encodings?

Yes, you can choose between UTF-8 and ASCII to ensure the character mapping matches your specific data requirements.

Is my data sent to a server?

This tool performs the conversion locally in your browser, ensuring your data remains private and is not transmitted to external servers.

API Documentation

Request Endpoint

POST /en/api/tools/base64-converter

Request Parameters

Parameter Name Type Required Description
inputText textarea Yes -
operation select No -
urlSafe checkbox No -
lineBreaks checkbox No -
characterEncoding select No -

Response Format

{
  "result": "Processed text content",
  "error": "Error message (optional)",
  "message": "Notification message (optional)",
  "metadata": {
    "key": "value"
  }
}
Text: Text

AI MCP Documentation

Add this tool to your MCP server configuration: 

{
  "mcpServers": {
    "elysiatools-base64-converter": {
      "name": "base64-converter",
      "description": "Encode and decode data to/from Base64 format with URL-safe options",
      "baseUrl": "https://elysiatools.com/mcp/sse?toolId=base64-converter",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

You can chain multiple tools, e.g.: `https://elysiatools.com/mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp`, max 20 tools.

If you encounter any issues, please contact us at [email protected]