Yes. AfroTools Base64 tool has a dedicated File Upload tab where you can drag and drop or select any file to encode it to Base64. You can optionally include the data:mime;base64 prefix for use in HTML/CSS, and download the Base64 output as a .txt file.
Is there a file size limit for Base64 encoding?
Yes, the file upload limit is 10MB. Since Base64 encoding increases data size by approximately 33%, the output will be larger than the original file. Text encoding and decoding have no practical limit beyond your browser's memory.
Is my data secure when using the Base64 encoder?
Yes. All encoding and decoding happens entirely in your browser. No data is ever sent to any server. Important: Base64 is an encoding format, not encryption. It should not be used to protect sensitive data.
Does the tool support URL-safe Base64 encoding?
Yes. Toggle the URL-safe mode checkbox to use URL-safe Base64, which replaces + with -, / with _, and removes padding = characters. This is useful when embedding Base64 data in URLs or filenames.