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Turnitin checking FAQ
Whether your document enters the repository, how the international edition differs from the UK one, how long a report takes, what the AI percentage means, and how to pay — the questions students ask most.
Will my document be added to the Turnitin repository?
No. Our instructor account is configured as "No Repository", so your file is not stored by Turnitin after the check. When you later submit the real thing, it will not match against your own draft.
Do you use the international or the UK edition of Turnitin?
We use the international edition (turnitin.com), which covers the global database and suits most Hong Kong institutions. It is not the UK edition (turnitinuk.com).
How long does a report take?
Usually between 5 and 30 minutes. Larger files and busy periods can take somewhat longer.
Is your report the same one my university sees?
Yes. We use an instructor account, so the report is identical to what your professor or tutor sees in Turnitin — the similarity percentage, the source list and the AI detection result.
Which file formats are supported?
PDF, Microsoft Word (.doc / .docx), plain text (.txt), RTF and PowerPoint (.pptx). Maximum 50MB per file.
What does *% mean in the AI detection result?
Turnitin shows *% when it cannot determine the proportion of AI content with confidence. This usually happens with short documents (under 300 words) or mixed content. You can request the AI highlight report for a more detailed breakdown.
How do I pay?
We accept FPS, PayMe and AlipayHK. After buying credits, upload your payment screenshot; once an admin approves it, the credits are ready to use. Selected packages also support instant card payment via Stripe.
How many times can I check one document?
Each submission costs 1 credit. Re-checking after edits costs another credit. Finish a complete draft before checking so you do not spend credits on partial work.
What similarity percentage is considered safe?
Most Hong Kong institutions publish no hard limit; 15%–20% is commonly treated as the point where a report deserves a closer look. What matters is not the total but whether one source accounts for a long continuous overlap.
Does using a third-party checker breach academic integrity?
Checking your own work and fixing your citations before submitting is self-checking, not plagiarism. Do note your institution's rules on resubmission, and use the service on the basis that the writing is your own.
Still curious
Want to go deeper?
We have written a few articles on how to read a similarity score, the limits of AI detection results, and how Hong Kong universities actually run Turnitin.