What is Base64 Encoding?
Base64 converts binary data into a text-based format using 64 characters (A–Z, a–z, 0–9, +, /). It’s widely used to transmit data over text-only protocols like JSON, XML, or email.
Why Use Base64 Encoding?
- Embed images, audio, or video in HTML/CSS.
- Transmit binary data in text-only systems.
- Store small configuration files in databases.
Base64 Example
Text: Hello
Encoded: SGVsbG8=
Advantages & Limitations
Base64 is simple and reliable but increases data size by ~33%. For large files, direct binary transfer is more efficient.
Common Uses
- Email attachments (MIME format).
- Embedding images/icons in web pages.
- Storing cryptographic keys/certificates.
Tip: Use Base64 for transport and embedding, but avoid permanent storage for large files. Decode a Base64 string here.