Option #1:
This rubric will help you assess how trustworthy (credible) a website is. Download the PDF here.

Global Digital Citizen Foundation. (2017). Gauging website credibility rubric. Retrieved from https://globaldigitalcitizen.org/rubric-website-credibility?mc_cid=5e0dea435a&mc_eid=1fa31cf3e8
Option #2:
The Get REAL Test = Simple. Usually gets the job done. Download the PDF here.
Read the URL
Examine the Content
Ask about the Author
Look at the Links
Option #3:
The CRAAP Test = More detailed. Good for very tricky or more complicated sites. Download the PDF here.
Currency – the timeliness of the info
Relevance – the importance of the info for your needs
Authority- the source of the info
Accuracy – the reliability, truthfulness, correctness of the info
Purpose – the reason the info exists
Also Useful:
Is your info peer-reviewed and “scholarly” or is it “grey” literature (like a trade journal)?

Garofalo, J. (2013). Identifying scholarly articles. Retrieved from https://modernlibrarianmemoirs.wordpress.com/2013/03/12/identifying-scholarly-articles-chart/