While working on my blog I discovered that some of the image and link sources in different posts had become broken without me noticing. Outside of “hugo says OK” I don’t have any other validation running on my blog so I decided to look for something that could lint the rendered output for dead links and other issues. I tried a number of different tools but ended up using htmltest. It runs after hugo renders the static output of my blog in a public/ directory in the project root.