📝 Text & Content
Base64 Encoder & Decoder
Encode plain text to Base64 or decode Base64 back to text — entirely in your browser.
How Base64 Encoding works
Base64 encodes binary data as a sequence of printable ASCII characters, using 64 symbols (A–Z, a–z, 0–9, +, /). It increases data size by approximately 33% but ensures safe transmission over text-based channels. Common uses include encoding images in HTML/CSS data URIs, transmitting binary data in JSON APIs, and encoding credentials in HTTP Basic Authentication headers. All processing happens locally — nothing is sent to a server.
Frequently Asked Questions
People also ask — answers optimized for search engines and voice queries.
What is Base64 encoding?
Base64 is a binary-to-text encoding scheme that represents binary data as a string of ASCII characters. It is commonly used to encode data for transmission over text-based protocols like email or HTTP headers.
How do I encode text to Base64?
Paste your plain text into the input box above and click "Encode to Base64". The encoded output appears instantly below.
How do I decode Base64?
Paste your Base64 string into the input box and click "Decode from Base64". The plain-text output appears instantly — if the input is invalid Base64, an error is shown.
Is my data safe when using this tool?
Yes. All encoding and decoding happens entirely in your browser using JavaScript. No data is sent to any server, making it safe for sensitive strings.
Is this Base64 tool free?
Yes, the Base64 Encoder & Decoder on Potential Daily is completely free with no sign-up required.