Question 1

What is Base64 encoding?

Accepted Answer

Base64 is an encoding scheme that converts binary data into a string of ASCII characters. It is used to safely transfer binary data over channels that only support text, such as email attachments or JSON fields in APIs.

Question 2

Is Base64 a form of encryption?

Accepted Answer

No. Base64 is encoding, not encryption. Anyone who has the Base64 string can decode it instantly without a key. Do not use Base64 to protect sensitive data -- use proper encryption for that.

Question 3

Can I encode any file to Base64?

Accepted Answer

Yes. The tool reads the file bytes in your browser and converts them to a Base64 string. Note that Base64 output is about 33% larger than the original file, so large files will produce very long strings.

Question 4

Why does my decoded text look like garbage?

Accepted Answer

If the original data was a binary file (an image, PDF, etc.) rather than plain text, decoding to text will produce unreadable characters. Base64-encoded binary files are meant to be decoded back to their file format, not to text.

Question 5

What are common uses of Base64 in web development?

Accepted Answer

Base64 is used in data URIs (embedding images directly in HTML or CSS), storing binary blobs in JSON, encoding credentials in HTTP Basic Authentication headers, and passing binary payloads in email protocols.

Base64 Tool

Three steps to done

When to use this

Decode auth tokens

Encode API keys

Convert data

Free Base64 encoder and decoder

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