📖 What is Base64 Encoder/Decoder?
Base64 is an encoding scheme that converts binary data into ASCII text using 64 characters (A-Z, a-z, 0-9, +, /). It is widely used to encode data in JWTs, embed images in CSS/HTML, transmit binary data in JSON, and encode credentials in HTTP Basic Auth.
💡 Example
Input
Hello DevNova Tools!
Output
SGVsbG8gRGV2Tm92YSBUb29scyE=
🛠️ Common Use Cases
- Encoding images for embedding in HTML/CSS as data URLs
- Decoding JWT token payloads
- HTTP Basic Auth (username:password) encoding
- Encoding binary data for JSON APIs
- Storing binary data in text-only formats like XML
❓ Frequently Asked Questions
Is Base64 encryption? ▾
No — Base64 is encoding, not encryption. It can be decoded by anyone. Use it for format conversion, not security. For encryption, use AES or similar algorithms.
Why does Base64 end with == signs? ▾
The '=' characters are padding. Base64 encodes 3 bytes at a time; if the input isn't divisible by 3, padding is added to make the output length a multiple of 4.
What is URL-safe Base64? ▾
Standard Base64 uses + and / which have special meaning in URLs. URL-safe Base64 replaces + with - and / with _ so it can be safely used in URLs and filenames.
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