Chrome extension to reload page on load error

Use chrome.webNavigation.onErrorOccurred or chrome.webRequest.onErrorOccurred to detect navigation errors. These APIs cannot be used in a content script, so you have to add a background page or event page to your extension.

I recommend to use the webNavigation API because these can also be used with event pages (unlike the webRequest API). Here is an example, use chrome.tabs.reload instead of chrome.tabs.update to get what you want.