The platform
One scan, two scores.
Upload, scan, compare, and report happen in the same system, so every document is checked against the same sources with the same rules — not a different tool for each step.
The rise of distributed systems has reshaped how
engineering teams reason about failure modes and
recovery, shifting focus from prevention alone
toward graceful degradation under load.
This shift is most visible in how teams design
for partial outages rather than treating every
component as equally critical to uptime.
Similarity score
Paraphrase score
How it works
Four stages. One originality report.
Upload
Any format, no cleanup.
Drop in PDFs, Word docs, or plain text — individually or in a batch. Plagion extracts and normalizes the text automatically.
Scan
Every sentence fingerprinted.
Text is broken into overlapping fragments and fingerprinted for comparison, so partial matches and rearranged passages don't slip through.
Compare
Checked against real sources.
Fragments are matched against billions of web pages, journals, and a database of previously submitted work — updated continuously.
Report
Two scores, one clear report.
Get a similarity score for direct matches and a paraphrase score for reworded text, with every flagged passage linked to its source.
The difference
What changes when every document gets scanned
Works where you already do
Connects to the tools you already teach and publish in
Privacy
Documents stay yours
Uploaded documents are used only to generate your report and are never shared with other institutions or publishers.
Accuracy
Every flag is explainable
Each flagged passage links directly to the matched source, so reviewers see exactly why a sentence was scored the way it was.
Extensibility
Built on an open API
Trigger scans from your LMS or CMS pipeline and pull reports back into the tools your reviewers already use.
Questions
Frequently asked
What's the difference between the similarity score and the paraphrase score?+
The similarity score measures direct or near-direct text matches against web and academic sources. The paraphrase score separately flags text that appears reworded or AI-spun to evade a standard similarity check.
How long does a scan take?+
Most documents return a full report in under a minute. Batch scans of a full class set or manuscript queue typically finish within a few minutes.
What sources are documents compared against?+
Web pages, academic journals and repositories, and a continuously updated database of previously submitted work, so resubmitted or shared essays are also caught.
Can we integrate Plagion with our LMS?+
Yes. Plagion connects to Canvas, Moodle, Blackboard, Google Classroom, and others, or you can call the API directly from your own submission pipeline.
Is student or author data kept private?+
Documents are used only to generate your report and are not shared with other institutions. Retention settings and deletion controls are available on Scale and Enterprise plans.