Fake language certificates exist on a spectrum. At one end are entirely fabricated documents from websites that sell certificates without any test. At the other end are genuine certificates where the score or level has been altered in a PDF editor. Both are fraudulent. Both are detectable.
How fake certificate websites operate
Dozens of websites sell language certificates with no assessment required. The buyer pays, fills in their name and desired level, and receives a PDF within minutes. These certificates often look professional, they use CEFR terminology, include official-sounding institution names, and mimic the format of legitimate certificates.
The institution names are usually invented or very close to real names. Searches for the organisation return no academic registry entries, no Ofqual accreditation in the UK, no recognition from the Council of Europe, and no presence in any language testing industry body. The addresses listed are typically false or belong to unrelated businesses.
How altered genuine certificates work
A candidate takes a real test, scores B1, and edits the PDF to show B2. The document looks identical to the original because it is the original, just altered. Visual inspection cannot detect this. Only database verification can.
When an employer enters the certificate code at the verification page, one of two things happens: the code does not exist in the database, which means the certificate was fabricated entirely, or the code exists but shows a different name, level, or date than what appears on the document submitted by the candidate.
Red flags on a CV
An unfamiliar institution name with no online presence. A certificate date that seems recent relative to when the candidate claims to have studied. A level that does not match the candidate's demonstrated ability in the interview. A certificate with no reference number or verification code. A document that looks like it was created in a word processor rather than issued by a testing organisation.
None of these alone confirms fraud. But each one is a reason to verify before proceeding.
What verification actually checks
For Examinizer certificates, entering the code at examinizer.net/verify/ returns the original unaltered record: the exact name used when the test was taken, the test name, the CEFR level, the score, and the date. If any of these differ from the submitted document, the document has been altered.
For IELTS, the verification system at ieltsverify.britishcouncil.org returns the original scores for each skill. A candidate who altered their overall band but not the individual skill scores will be caught immediately because the skills and overall score will not match.
What to do if you suspect fraud
Do not confront the candidate immediately. Verify the certificate first and document what the verification shows. If the verification confirms fraud, the decision about whether to withdraw the offer, involve HR and legal counsel, or report to authorities depends on the role, sector, and jurisdiction. In regulated sectors like healthcare, education, and aviation, certificate fraud in language proficiency may have legal consequences beyond employment.
Verify an Examinizer certificate in 10 seconds
Enter the 12-character code from the certificate PDF.
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