One online tool for BASE64 is Motobit Software's BASE64 encoder/decoder.
Simply paste the BASE64 code into the text box, select the decode the data from a Base64 string (base64 decoding) radio button, as well as the export to a binary file, filename: radio button. Name the file for example "mask.png" and click the convert the source data button.
This should result in a download of the mask as a PNG file.
Thank you StarTools for turning my average photos into amazing ones.
StarTools' Detail-aware Wavelet Sharpening allows you to bring out faint structural detail in your images.
The Heal module was created to provide a means of substituting unwanted pixels in an neutral way.
Any other tools on the market today simply approximate the visual likeness of such star spikes and 'paint' them on.
The Shrink module allows you to modify the appearance of stars in your image.
You can convert everything you see to a format you find convenient. Give it a try!