Thanks, OP has been updated.
Be careful about adding every suggestion to your OP.
Browser extensions are an easy way to distribute malicious code, since if your extension looks good/professional enough, many people will download it without really thinking about it. I've not even heard of some of these extensions, which is usually a warning sign for me given how much attention I pay to online security and privacy. I would certainly be considering checking the code out for yourself before recommending it to others.