The Copyfish it is not the first expansion visualof character recognition (Optical Character Recognition or OCR), as Project Naptha already exists.
But the extension seems to extend functionality by adding new options that Project Naptha does not have.
Probably the biggest addition to Copyfish's features is that it lets you select text from videos and PDF documents that appear on browsers Chrome, Edge and Firefox, as well as text from images. It should be noted that Project Naptha limits its translation to images only.
The second new feature is a direct translation. Imagine watching a YouTube video showing subtitles in a foreign language that you do not understand. 
Using Copyfish you can watch the video with translated subtitles!
Copyfish adds icon in the address bar of browsers.
Note that the extension requires permission to read and change the data on all the websites you visit.
The icon appears in red or black, depending on whether you can use the OCR extension features on a page or not.
If the icon is red and you click on it, the extension will show an overlay on your screen and ask you to draw a rectangle around the text you want to translate.
The text is automatically processed and opens an overlay in the lower right corner of your screen that displays the copied text as a top and bottom translation.
The latest version of it additionalIt also has a Screenshot Reader, for text editing on your desktop.
Copyfish is a useful extension and you can try it from the ink below
Copyfish OCR for Chrome
Copyfish OCR for Firefox
Copyfish OCR for Edge
Watch the video
