How to Fact-Check an Online Claim: A Practical, Repeatable Method

Start with the exact claim

Copy the smallest checkable statement. “Scientists proved this is dangerous” is too broad; a named study, date, place, number or quotation can be tested. Separate facts from opinion and note what the post asks you to conclude.

Find the earliest accountable source

Look for the original report, study, official record, full speech or first publication—not a cropped screenshot of someone describing it. Check who published it, when, and whether the page identifies an author or organisation that can be contacted.

Read beyond the headline

Headlines compress. Read the full item, including the method, qualifiers and linked evidence. A survey can describe what respondents said; it cannot automatically prove a wider fact. A single incident may be real without establishing a trend.

Check context and corroboration

Search for independent reporting from credible sources with relevant expertise. Compare dates, locations, images and quotations. If every result repeats one unattributed post, you have repetition, not confirmation.

Decide what you know

Use precise language: confirmed, supported but incomplete, disputed, unverified, or false. It is responsible to pause. Before sharing, explain what source you checked and what remains unknown.

A quick evidence routine

Work from the original material whenever possible. Keep a note of the source, the date and the specific claim you are checking, then distinguish what you directly observed from what an account or caption says. Search for independent evidence that could confirm or challenge it. This simple record makes it easier to revisit a conclusion if new information appears.

Good verification is often less dramatic than a quick verdict. If the evidence is mixed, say so. If you cannot establish the source or context, treat that uncertainty as part of the result rather than filling the gap with an assumption. A careful pause can prevent a false claim from travelling further.

Before you share

Ask whether your wording reflects the strength of the evidence. Link to the original source when it is available, avoid attacking the person who posted the material, and correct a previous share if better information emerges. These habits improve the quality of the information around a claim as well as the accuracy of one post.

Useful primary resources

• Google Search: evaluate content
• Reuters Fact Check