Base64 Encoder / Decoder
Encode and decode Base64 strings instantly. Supports standard text, URLs, and binary data encoding.
Output will appear here...
Runs locally in your browser. 100% private & secure.
About Base64 Encoder / Decoder
What is Base64 Encoding?
Base64 is a binary-to-text encoding scheme. It takes binary data (like an image or a complex string of special characters) and translates it into a standard ASCII string format using a specific 64-character alphabet (A-Z, a-z, 0-9, +, and /).
Why use Base64?
The primary purpose of Base64 is to safely transmit data across networks or systems that were originally designed to only handle basic text.
- Data URIs: You can convert small images into Base64 strings and embed them directly into HTML or CSS files, saving HTTP requests.
- Email Attachments: The MIME standard uses Base64 to encode email attachments.
- API Payloads: Safely transmit binary data inside JSON payloads.
Is Base64 Encryption?
No. Base64 is an encoding format, not an encryption algorithm. It does not use a secret key or password. Anyone who sees a Base64 string can easily decode it back to its original form. Never use Base64 to hide passwords or sensitive data.
Frequently Asked Questions
Is Base64 considered encryption?
No. Base64 is an encoding scheme, not encryption. It does not use keys or passwords, and anyone can decode a Base64 string back to its original format. Do not use Base64 to secure sensitive data like passwords.
Is the data sent to a server for decoding?
No, this tool performs all Base64 encoding and decoding operations locally in your browser using standard Web APIs, guaranteeing your data remains entirely private.