Bulk Base64 Encoder / Decoder

Encode or decode multiple lines of text to and from Base64 at once. Each line is processed individually for efficient bulk operations.

About Our Bulk Base64 Encoder / Decoder

Why Bulk Processing?

While single-string converters are useful, developers and data analysts often work with lists, logs, or datasets containing hundreds of entries. This tool eliminates the tedious task of processing each line one by one. Simply paste your entire list, and the tool will handle each line as a separate entry, providing a corresponding list of encoded or decoded strings.

Line-by-Line Operation

Each line in the input field is treated as an independent string. The tool iterates through your list, applies the selected operation (encode or decode) to every line, and presents the output in the same line-by-line format. Empty lines in the input will result in empty lines in the output, preserving your list's structure.

How It Works

  • Paste Your List: Enter your text into the input field, with each item on a new line.
  • Choose an Action: Click 'Encode' or 'Decode' to process every line in your list.
  • Copy the Result List: The processed list will appear in the output field, maintaining the original line structure.

Practical Use Cases

1. Decoding Lists of Credentials

When analyzing configuration files (like .htpasswd) or API logs, you might encounter lists of Base64-encoded usernames and passwords. This tool allows you to decode the entire list in one go to quickly review the contents.

2. Preparing Data for APIs

Some APIs require that individual pieces of data in a batch request be Base64 encoded. You can prepare your list of raw data here, encode it, and then easily integrate the output into your API call payload.

3. Analyzing Encoded Log Files

Certain systems or applications might store log entries or specific fields within logs in Base64 format. This tool helps you quickly decode a large chunk of logs for analysis without needing to write a custom script.

Frequently Asked Questions

Have questions? We have answers.

What happens if one line is invalid?
The tool processes each line independently. If a line cannot be decoded (e.g., it's not a valid Base64 string), it will be marked with an error message like <INVALID> in the output, but the other lines will still be processed correctly.
Is there a limit to the number of lines I can process?
While there's no hard limit, performance may decrease with extremely large lists (tens of thousands of lines) as all processing is done in your browser. For typical use cases, the tool is very fast.

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