It is a tool which analyzes and process the image data and convert it into base64.
Any type of image such as jpg,png,jpeg..etc. it can extract.So, image is nothing but pixels data and this data is processed by tool and convert it to base64.
You can also try Base64 to image converter.
So,to use this tool in calcont ,
1.You can click on upload button or can drag and drop image in above field and other option is you can just enter the url of online image
2.Press the convert button and wait for some seconds.
3.Now,you can see the base64 format in output textarea or if their is some error it'll also notifies you below in output field.
Sometimes you have to send or output an image within a text document (for example, HTML, CSS, JSON, XML), but you cannot do this because binary characters will damage the syntax of the text document. To prevent this, for example, you can encode image to Base64 and embed it using the data URI.It's also fast when you include base64 in html because browser don't has to send a request to fetch an image.