Encode UTF-8 text
Convert ordinary text, JSON snippets, identifiers, and other UTF-8 content into a standard Base64 string.
Base64 utility
Online Base64 Encoder
Encode plain text to Base64 in your browser with UTF-8 support. Copy the output or download a text file; processing stays on your device.
- Browser-based
- No upload
- Instant output
How it works
Paste plain text Enter the UTF-8 string to encode
Encode Base64 Convert to a Base64 string
Use the result Copy or download your text
Supports emoji and non-Latin text
Standard Base64 string
About the Base64 Encoder
Convert UTF-8 text into Base64 in the browser for configuration values, API fixtures, test payloads, and other text that needs a Base64 representation.
Prepare Base64 for development work
Encoding turns plain text into a portable ASCII form that travels safely through JSON fields, headers, and configs. Verify the result by decoding it again before shipping fixtures.
Confirm output with the Base64 Decoder. Encode query-safe strings with the URL Encoder. Convert images on Base64 to Image. Auth-token workflows often continue on the JWT Decoder / Generator.
Build API test data
Generate values for request bodies, integration fixtures, and manual API checks without a helper script.
Copy or download output
Copy the Base64 string immediately or save it as a text file for another workflow.
Verify and related encodings
Check results in the Base64 Decoder, prepare URL values with the URL Encoder, or continue with JWT tooling.