Question 1

What is Base64 encoding?

Accepted Answer

Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format. It is commonly used to encode data for transmission over text-based protocols like email and HTTP, or to embed binary data in JSON and XML.

Question 2

What is URL-safe Base64?

Accepted Answer

Standard Base64 uses + and / characters, which can cause issues in URLs. URL-safe Base64 replaces + with - and / with _, and removes padding = characters. This makes the encoded string safe to use in URLs and filenames.

Question 3

Is Base64 encryption?

Accepted Answer

No. Base64 is encoding, not encryption. It is easily reversible and provides no security. Anyone can decode a Base64 string. For security, use actual encryption like AES or RSA.

Question 4

When should I use Base64?

Accepted Answer

Use Base64 when you need to transmit binary data (like images) over text-only channels, embed binary data in JSON/XML, or store binary data in databases that only support text.

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How Base64 Works

Example

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