RunJsOnPageStart is a developer tools chrome extension. it's a free extension , it has 8 active users since released its first version, it earns an average rating of 0.00 from 0 rated user, last update is 1490 days ago.
Use this extension if you need to run javascript code before any other scripts on the page
You could download the latest version crx file or older version files and install it.
English.
You could find more help information from runjsonpagestart support page.
You could send emails to publisher, or check publisher's website.
More about manifest_file of runjsonpagestart.
You could click to report abuse of runjsonpagestart.