Base64 Encoder, Decoder
Encode and decode Base64 text quickly, securely, and directly in your browser. Fully supports Unicode & Emojis.
What is Base64?
Base64 is a data encoding scheme used to convert binary data into a readable ASCII string format. It represents data using 64 standard characters (A-Z, a-z, 0-9, +, /) and is commonly used for transmitting data over protocols that are designed to handle text, such as HTTP and SMTP.
How to Use Base64 Encoder
1. Select the Encoder tab.
2. Type or paste your plain text, including emojis or Unicode characters, into the left text area.
3. The tool will automatically convert it into a valid Base64 string in real-time in the right text area.
4. Click the Copy button to copy the encoded string.
How to Use Base64 Decoder
1. Select the Decoder tab.
2. Paste your Base64 string into the left text area.
3. The tool will instantly decode it back to plain text.
4. If the input is invalid, an error message will appear seamlessly.
Privacy First
This Base64 tool is designed with your privacy in mind. All encoding and decoding processes happen directly within your browser using client-side JavaScript. No data is ever sent to, stored on, or processed by our servers.
Frequently Asked Questions
A Base64 Encoder converts plain text or binary data into a string of 64 standard ASCII characters. This ensures the data remains intact without modification during transport across various systems.
A Base64 Decoder does the reverse of an encoder. It takes a Base64 encoded string and translates it back into its original plain text or binary format.
Yes! Our tool uses modern UTF-8 encoding mechanisms (TextEncoder/TextDecoder) meaning it fully supports Emojis, symbols, and non-Latin scripts perfectly without breaking the characters.
The "=" sign is used for padding. Because Base64 processes data in 3-byte blocks, if the data doesn't evenly divide by 3, padding characters are added at the end to complete the final block.