Plagiarism Checker

A plagiarism checker that detects text similarity across sources, helping students, educators, and writers ensure originality and maintain academic integrity.

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About This Tool

The plagiarism checker analyzes input text to identify similarity with publicly available content and licensed sources. It returns a maximum similarity score, a structured list of matched sources with URLs, and a downloadable report suitable for records and audits. It supports long-form content, multiple languages, and configurable source scopes. Typical users include students validating assignments, educators screening submissions, researchers drafting manuscripts, and writers ensuring content originality and proper attribution.
The engine tokenizes text, builds vector representations, and compares them against an indexed source corpus using cosine similarity and paraphrase-aware heuristics. It detects reordered passages and near-duplicate phrasing, then marks matching passages and provides per-source excerpts and links. Results are delivered as an overall similarity percentage plus a detailed source-by-source breakdown, enabling precise review and citation planning.
Value proposition: It enables fast checks, scales to large documents, and produces exportable reports for compliance, editorial review, and workflow automation. By delivering shareable results with source references, it supports transparency, accountability, and scholarly integrity in educational, publishing, and corporate content pipelines. Privacy controls, data retention options, and user-defined retention periods are supported to protect sensitive materials.
Core features and use cases: input options (paste text, file uploads), language detection, adjustable source scopes, sensitivity thresholds, per-source excerpts, and export formats (JSON/CSV/PDF). It supports citations guidance and review workflows in schooling, research, and content creation.

How to Use

  1. Provide inputs: paste or upload text or documents (PDF, DOCX).
  2. Configure options: select language, source scope, and similarity threshold.
  3. Run check: initiate analysis and wait for results.
  4. Review outputs: view overall similarity, per-source matches, excerpts, and export the report.
How to use plagiarism checker kth

Frequently Asked Questions

Find Quick Answers

What sources are checked?
The checker compares input text against a broad index of publicly available web pages, online publications, and licensed academic databases. Paywalled content is included only if the user provides it. Results indicate overlap and proximity to sources, not a guaranteed quote-for-quote match.
How is similarity calculated?
The system tokenizes text into tokens and n-grams, creates TF-IDF vectors, and computes cosine similarity against the source index. It also flags paraphrase and reordered phrases using heuristic checks. The output includes an overall score plus per-source details and highlighted excerpts.
Is my data private?
Submissions may be processed in memory or stored temporarily for auditing and model improvement, with configurable retention policies. Privacy controls exist and data can be anonymized or removed after processing. Users should review terms and consent options to understand data handling.
Can I export reports?
Yes. The tool exports reports in JSON, CSV, or PDF formats, including overall similarity, per-source matches, excerpts, and source links. Reports support sharing with instructors, editors, or compliance teams and can be integrated into documentation workflows.

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