ToolsZone
Developer

Base64 Decoder

Decode Base64 encoded strings back to readable text.

Output Format
Go to Encoder
Input Base64
Decoded Output

How to use Base64 Decoder

  1. 1

    Paste Input

    Paste your standard Base64, URL-safe Base64, or Data URI into the text box.

  2. 2

    Choose Format

    Select whether you want to view the decoded data as UTF-8 Text, Hex string, or Binary.

  3. 3

    Preview Image

    If you paste an image Data URI, the tool will automatically detect and display the image.

  4. 4

    Copy or Download

    Copy the decoded text, or download the raw decoded data as a file directly to your device.

Related Tools

JSON Formatter

Format, prettify, and validate JSON with syntax highlighting.

JSON Validator

Validate your JSON and get clear, helpful error messages.

HTML Encoder

Encode special HTML characters to safe HTML entities.

HTML Decoder

Decode HTML entities back to readable text.

Frequently Asked Questions

What is Base64 decoding?

It's the reverse process of encoding. It takes a string of ASCII characters and converts them back into their original binary or text format.

Can this decode missing padding?

Yes, our decoder automatically handles Base64 strings that are missing the trailing '=' padding characters.

Can I decode a file?

Yes, you can paste the Base64 representation of a file and click 'Download File' to save the binary data back to your computer.

Why is the text output garbled?

If the original data was an image or binary file (like a PDF), viewing it as 'Text' will look like random characters. Switch to Hex or download the file instead.

What is a URL-safe Base64 string?

It's a variant where '+' and '/' are replaced with '-' and '_' so the string can be placed in URLs. Our tool auto-detects and decodes this seamlessly.