What is Base64 encoding?

Base64 represents binary or text data using a restricted set of ASCII characters. It is commonly used in data URLs, APIs, email attachments, and configuration values.

Is Base64 encryption?

No. Base64 is an encoding format, not encryption. Anyone can decode a Base64 value, so it should not be used to protect secrets.

What is URL-safe Base64?

URL-safe Base64 replaces plus and slash characters with hyphen and underscore and commonly removes trailing padding. JWT segments use this Base64URL format.

Base64 Encoder & Decoder

Text Input

0 bytes

Base64 Output

0 bytes

Encode or Decode Base64 Online

Convert normal UTF-8 text into Base64 or decode a Base64 value back into readable text. The converter supports Unicode characters and both standard and URL-safe Base64 formats. Everything runs locally in your browser.

Common Base64 Uses

API and Configuration Values

Inspect encoded credentials, configuration strings, webhook values, and text fields returned by APIs.

Data URLs and Embedded Content

Encode small text resources for data URLs or decode embedded Base64 content while debugging web pages.

Base64URL and JWT Segments

Work with URL-safe Base64 values that replace unsafe characters and omit padding.

Unicode Text

Safely encode and decode UTF-8 content instead of limiting input to basic ASCII characters.

Related Developer Tools

Decode complete tokens with the JWT Decoder, format decoded objects with the JSON Formatter, or generate checksums with the Hash Generator.