Free Base64 encoder and decoder for text, files, and images. Convert images to data URIs. Preview decoded images. All client-side.
Use the Text tab for string encoding, or the File tab for binary files and images.
Conversion happens live as you type. For files, drop or select a file to encode.
Copy the Base64 output. For decoded files, download the result or view image previews.
Varstatt is a one-person product studio run by Jurij Tokarski, product engineer since 2011. These tools are free and open — no signup, no catch.