Base64 Encoder / Decoder
Convert text to Base64 and back. Supports files and URL-safe mode.
Drop a file here or click to select
FAQ
What is Base64?
Base64 is a binary-to-text encoding scheme that represents binary data as ASCII characters. It's commonly used for embedding images in HTML/CSS, encoding email attachments, and transmitting data in URLs.
What is URL-safe Base64?
URL-safe Base64 replaces + with - and / with _ to avoid conflicts with URL special characters. It also removes trailing = padding.
Is there a size limit?
No hard limit — this tool runs entirely in your browser. Very large files may be slow but will still work.