A third useful web browser add-on I’d like to draw to your attention after KeywordsEverywhere and Hunter is Check My Links, a Chrome extension which does exactly what its name suggests. Publish a web page, click on the browser toolbar button, and all the links on your page are instantly checked. Simple as that. You can filter out internal links if you just need to check external ones. Checking links is an essential part of the publication procedure for any web page, in my opinion, and this makes it really easy. More information here.