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Free video fact-check tools: verify any video
The free tools fact-checkers use to verify videos: keyframes, reverse search, InVID-WeVerify, Google Lens, fact-check databases and AI checks, step by step.
Video Verifier team · · 3 min read
Professional fact-checkers don't have secret software. Most of what they use to verify a video is free, and you can follow the same steps from your phone or laptop in about ten minutes. Here's the toolkit, in the order they use it.
Step 1: Pull out a few clear frames
Search engines can't search a video directly, but they can search its frames. Pause on moments with something distinctive (a face, a shop sign, a landmark, a vehicle) and take screenshots. Three or four different frames work better than one.
On a laptop, the free InVID-WeVerify browser plugin, built for journalists by European verification projects, splits videos from YouTube, Facebook, Instagram and other sites into keyframes for you, and can send each one to several search engines at once. Some of its advanced tools need a free registration.
Step 2: Reverse-search the frames
- Google Lens: the quickest first pass, on any phone. Search with a screenshot.
- Bing Visual Search, Yandex and TinEye: each finds different copies. TinEye is good at finding the oldest indexed copy of an image.
You're looking for the earliest copy. A clip that "happened today" but turns up in a 2019 news report has its answer. Remember that finding the same frame elsewhere only shows where else it was posted; keep looking for the original.
Step 3: Search existing fact-checks
Viral fakes are often checked within hours. Search the claim in Google Fact Check Explorer (toolbox.google.com/factcheck/explorer), which collects fact-checks from organisations around the world, and on Indian fact-checkers' sites: BOOM, Alt News, Factly, Vishvas News, Newschecker and The Quint's WebQoof. For claims about the government, check PIB Fact Check.
Step 4: Check whether it was made by AI
Reverse search can't tell you whether a video was generated by AI, and a brand-new AI clip has no older copies to find. Paste the link into our free checker: it looks at how the picture moves over time, the individual frames, the voice, any AI watermark and the post's text, and also searches published fact-checks for the claim, then shows the evidence behind its answer.
Step 5: Check the details against the claim
- Place: do signs, shop names, language and number plates match where it supposedly happened? Compare landmarks with Google Maps and Street View.
- Time: do the weather, season, light and shadows match the claimed date?
- Sound: does the audio match what you see, or does it sound added on?
Step 6: Find the person who filmed it
Look for the first account that posted it. Check their history: do they usually post from that place? Did they film it, or re-share it? When it really matters, message them and ask.
The toolkit at a glance
- Frames: screenshots, or the InVID-WeVerify plugin (free).
- Reverse search: Google Lens, Bing, Yandex, TinEye (free).
- Existing fact-checks: Google Fact Check Explorer, Indian fact-checkers, PIB Fact Check (free).
- AI detection: Crackly Video Verifier (Quick Scan free, no sign-up).
- Place and time: Google Maps, Street View, weather archives (free).
No single tool settles it. Two or three that agree usually do. For a walk-through on WhatsApp forwards specifically, see how to verify a WhatsApp forward, and for old clips posted as new, how to find when a video was filmed.