A lot of tutorials which can be downloaded have the file type of `.chm`, `.pdf`, `.html`, etc. I downloaded a Java SE tutorial of Java SE in HTML format. When I use chrome to view it and everything is good. But I just wonder how could I just directly highlight some useful information (e.g. text) when I use chrome to view it? The html files are local, I know that I could use some software to edit it, like using HTML tag `<font color:>` etc. 

But I just want to highlight it directly in the browser like editing it in word. Is there any suggestion? Dose chrome support such kind of plugin? If you still don't understand what i mean, please refer to "clip to evernote", which is a plugin of chrome and can cut the pages and upload them to the evernote server. when I use evernote client to read them, I can directly highlight some words which is useful to me.