Encode UTF-8 text to Base64 or decode Base64 strings instantly. Useful for debugging API payloads, Basic Auth strings, data URLs and quick developer tasks.
Hello World
Encoded:
SGVsbG8gV29ybGQ=
Decoded:
Hello World
Use Base64 encoding when working with HTTP Basic Auth headers, embedding small assets, inspecting encoded payloads or exchanging text safely through systems that expect ASCII-safe content.
For Basic Auth, encode the text format username:password and place the result after Basic in the HTTP Authorization header. Remember that Base64 is reversible, so it is useful for transport compatibility, not for protecting secrets.
Base64 encoding is a method used to convert binary data into ASCII text. It is commonly used in web development to safely transmit data through systems that only support text.
Developers often use Base64 when working with APIs, authentication headers, email attachments and data URLs. It ensures that data remains intact without being corrupted during transfer.
This tool allows you to quickly encode and decode Base64 strings directly in your browser without sending data to any server.
Developers often meet Base64 inside JSON payloads, webhook bodies, authentication headers and copied data URLs. This browser-based encoder/decoder is meant for quick text checks while debugging requests and responses.
If you are working with image files, use the related Image to Base64 tool. This page is focused on text strings and UTF-8 payloads.
Is Base64 the same as encryption?
No. Base64 only encodes data into text form. It does not protect or hide sensitive information.
Can I decode Base64 generated somewhere else?
Yes. Paste the encoded string and use Decode to convert it back to readable text.
Does this support UTF-8?
Yes. The encoder and decoder use UTF-8 text handling in the browser.
If you are encoding credentials for an HTTP header, read the short guide: How Base64 works in Basic Auth.