mediabiascheck does only work on the actual news media source page
factlayer works on sites like CoSo and a few others and colour codes URL's
like i said both have there own merits
also worth pointing out you can contribute to mediabiascheck
https://mediabiasfactcheck.com/submit-source/
If your source is not listed please let us know in the form below. If the source you searched for is listed as “Sources Pending” please do not submit it as it has already been submitted and will get done in the near future
or you can use the quick MBC method via chrome 😉
instead of having both factlayer and MBC extensions running