This refers to the degree to which you can trust that the information is accurate. To what extent is the information credible? To what extent is the information objective? You can judge the reliability of information by:
Authority of source (author/organization) and creation of document
Is the author an authority? Is he a recognized author in his field? For which organization does he work? What is known about the author?
Is it a reputable organization? Who is the website owner? A paper or website from a respected well-known organization is generally more trustworthy than that of a vague foundation with dubious or unclear objectives
Is there sponsorship of author or organization? Sponsorship need not be a problem, but be aware that commercial interests may be involved.
Is there quality control? If so, is there an editorial board? Are articles peer-reviewed? Especially with peer review, there is a high degree of reliability because several experts/scientists have already critically assessed such an article
Correctness
Are the facts correct? Check if they are confirmed in another source. Note that if you keep seeing the literal text, then the information has been cut and pasted and it is unlikely that the creators of the website checked the information.
Are opinions supported by facts?
Does the information come from a primary source or second hand?
Objectivity
What is the purpose of the information? Is the purpose informational, opinion formation, propaganda, etc.?
Is it about (hard) facts or opinions?
Is the subject highlighted from multiple angles?
Quality of information source
Does the information source look professional?
Verifiability
Is there source citation? What is the quality of those sources? Is it verifiable that information is accurate and complete?