Base64 Decode Online

How to Use

1. 1

   Paste your Base64 string

   Copy and paste the Base64 encoded string into the input field.

2. 2

   Click Decode

   Press "Decode from Base64" to convert the encoded string back to readable text.

3. 3

   Copy the result

   Use the Copy button to copy the decoded text to your clipboard.

Features

• Decode any Base64 string to plain text
• Supports Unicode-encoded Base64 strings
• Instant decoding with clear error feedback
• Works entirely in your browser
• No data sent to any server
• Free with no limits or sign-up

Frequently Asked Questions

QWhat is Base64 decoding?

Base64 decoding is the reverse of encoding — it converts a Base64 ASCII string back into the original binary data or text.

QWhat does 'Invalid Base64' mean?

This error means the input is not valid Base64. Common causes include missing padding characters (=), invalid characters, or whitespace. Try trimming whitespace from your input.

QIs decoded data safe to use?

Base64 decoding just converts data format. Always be cautious with decoded content from untrusted sources, especially if it contains HTML or executable code.

QCan I decode Base64 images?

This tool decodes Base64 to text. For Base64-encoded images (data URLs), the decoded output will show binary data. Use a dedicated image decoder for visual output.

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