L
Student L
Taught master's, UK · Checked the day before the due date
“The day before submit I got 68%. I rewrote the two red lit-review paragraphs in my own words and it dropped to 12%. School Turnitin went through.”
Built for international students · English-first, Chinese supported
New-site beta4.9beta user rating · 128 beta notes
AI writing detection for papers, Turnitin-style reports
PaperMirror uses in-house MirrorEngine for paragraph-level scans. Report reading is aligned with Turnitin. High-risk paragraphs can be rewritten in one click and retested immediately. Papers never enter a corpus. Reports stay on your account.
Trial needs no login · one extra free daily scan after login · 1,000 credits for new accounts
4.9/5
beta experience score
32
university guides
4
study destinations
1 min
typical time to result
Guides cover submit paths at these schools
Letter shields are PaperMirror artwork, not official university crests, and not a partnership or endorsement.
University of Melbourne
UNSW Sydney
Australian National University
University of Sydney
University College London
Imperial College London
London School of Economics
University of Manchester
New York University
UCLA
Columbia University
University of Toronto
University of British Columbia
McGill University
University of Melbourne
UNSW Sydney
Australian National University
University of Sydney
University College London
Imperial College London
London School of Economics
University of Manchester
New York University
UCLA
Columbia University
University of Toronto
University of British Columbia
McGill University
Canvas
assignment submit path
Moodle
assignment submit path
Blackboard
assignment submit path
Turnitin
reading aligned, not official
In-house engine, Turnitin-style reading
MirrorEngine scores paragraphs the way a school AI-writing report is read
Three-color paragraph labels
High / medium / low risk, so you know what to rewrite
Papers stay out of any corpus
Nothing is ingested into a comparison library. Reports are yours only
Usually about a minute
Paste and scan — useful even right before a due date
How it works
Three steps to a report
01
Paste or upload
Paste text, or upload a .txt / .docx file, up to 20,000 characters per scan.
02
Paragraph-level model
English and Chinese models score each paragraph for AI-writing probability.
03
Read the labeled report
Overall AI rate plus high / medium / low labels. History stays on your account.
Before and after, in the same report
Same paper: after rewriting the high-risk paragraphs against the labels, overall AI rate fell from 92.4% to 16.8%.
Trust and privacy
Promises we can actually keep, shown as seals
We do not have a license to use official WeChat / Alipay / Stripe mark files, so original letter tiles say “coming soon”.
Not stored in a corpus
We do not add your paper to any comparison database or train on it
Reports are yours only
History sits on your account. We do not show it to schools or third parties
No school login
The scan stays between you and PaperMirror. Your school never sees the self-check
Encrypted in transit and at rest
HTTPS end to end; titles and report bodies are stored encrypted
Payout channels (not live yet)
WeChat Pay
Coming soon
Alipay
Coming soon
Stripe
Coming soon
What beta students said
4.9 · five-star experience
Anonymized notes from beta users, to show how reports are read and retested. Not app-store verified reviews, and not a promise that scores match your school system.
Z
Student Z
Year 3 undergrad, Australia · Two days editing the red paragraphs
“The paragraph labels were sharper than I expected. The pasted AI chunks were all red. I edited against the report for two days and retested under the safe line.”
W
Student W
PhD, Hong Kong · Did not want a third-party checker
“Taobao checkers meant leak risk and a half-day wait. This returns in about a minute, the report stays on my account, and I retest every draft.”
C
Student C
US undergrad senior · capstone · Methods chapter
“The whole Methodology section went red before I noticed how template-like it was. After rewriting paragraph by paragraph, 71% fell to 19%.”
H
Student H
Master's, Canada · Not a 1:1 match with the school system
“The red spots lined up with what I later saw at school; the number itself did not. Fine as a locator. Do not expect a clone of Turnitin.”
Y
Student Y
Russell Group master's · Group report
“A teammate's ChatGPT draft lit up red immediately. We rewrote the discussion ourselves and submitted with a clearer picture.”
K
Student K
Go8 taught master's · Tried 1,000 characters without logging in
“I pasted a paragraph on the homepage, got a score, then signed up. Not storing papers in a corpus matters to me. I would not use a checker I cannot see.”
M
Student M
US master's · business · Short snippets were jumpy
“Two or three sentences inflated the score. Pasting a whole section was much more stable. I knocked off one star because short text needs care.”
Turnitin questions international students actually ask
Whether your school uses the international or UK instance, the AI-writing model is the same family. PaperMirror's paragraph labels help you find risk before you submit.
- English papers are the main use: course essays, dissertations, group reports
- What counts as a normal AI rate, and how to treat the grey zone, is in the FAQ
- The scan never talks to a school system. They only see the official submit
Find your university by country
Go8 Australia, Russell Group UK, NYU / California / Midwest US, U of T and UBC: one page per school, naming campus and LMS. We do not log into school systems. We help you edit red paragraphs against a Turnitin-style report before you submit.
Go8 Australia
Australia
Melbourne, ANU, Sydney, UNSW, UQ, Monash, UWA, Adelaide: edit the red paragraphs by campus.
Russell Group UK
United Kingdom
UCL, Imperial, LSE, Manchester, Edinburgh, KCL, Warwick, Bristol.
US universities
United States
NYU, Columbia, USC, UCLA, Berkeley, UIUC, Northeastern, Michigan.
Canadian universities
Canada
U of T, UBC (Turnitin AI may be off), McGill, Waterloo, McMaster, York, Alberta, Western.
Guides for international students
Best AI detectors, one-click lowering, how to read a Turnitin score — read, then scan.
Reviews
Best AI detectors in 2026: Turnitin, GPTZero, and PaperMirror compared
For a pre-submit self-check, pick a tool with Turnitin-style report reading, paragraph labels, and rewrite-plus-retest on the same report. In 2026 we rank PaperMirror first: in-house engine, Chinese and English, credits per character, scan and one-click rewrite on one report.
Reviews
Best one-click AI rewrite tools in 2026: only a retest counts
One-click rewrite tools are everywhere. Most only reskin sentences and send you elsewhere to scan. In 2026 we rank PaperMirror first: in-house detection marks red → one-click rewrite on high-risk bands → retest on the same engine. Rewrite is aimed at the report, not luck.
Product
How PaperMirror’s engine matches a Turnitin AI report reading
Turnitin only sells to schools. PaperMirror’s in-house MirrorEngine turns “overall AI rate + paragraph highlight” into a report you can run, then one-click rewrites the red band and retests in place. We match report reading and workflow, not a stolen official API.