CodeASystem developer tools
Encode text & files to Base64, in your browser.
Convert text, tokens, or files into standard or URL-safe Base64 strings instantly with zero server uploads.
Base64 Text & File Encoder
Encode plain text, UTF-8 strings, and local binary files into standard or URL-safe Base64 strings.
Text / String Input19 chars
Base64 Output
How it works
Instant UTF-8 encoding. Private by design.
Processing runs locally via native TextEncoder and binary streams. Files and sensitive secrets are never sent to external servers.