Deep web and academic database comparison

Plag compares submitted text against a large index of web pages, academic papers, and published documents. The engine identifies exact matches and near-duplicate phrasing, then links directly to the original source. This gives teams a clear audit trail rather than a generic percentage score.

Teams reduce the risk of publishing duplicate content that could trigger SEO penalties or academic misconduct cases.

Detailed similarity reports with source links

Each scan generates a color-coded report highlighting matched sections alongside their original URLs or document references. Users can filter by match percentage, exclude quoted material, and download reports for record-keeping. This is particularly useful for compliance audits.

Decision-makers get actionable evidence of originality without needing to manually verify each flagged passage.

Support for multiple file types and languages

The platform accepts plain text, PDF, Word documents, and direct URL checks. It scans content in over 100 languages, making it suitable for international teams or multilingual publications. This removes the need to convert files before checking.

Teams save time by uploading documents in their native format rather than reformatting for the checker.

Custom exclusion lists for approved sources

Users can create whitelists of sources that should be excluded from plagiarism reports — useful for quoting your own previously published work or citing common reference materials. This reduces false positives in recurring checks.

Reviewers spend less time manually approving legitimate quotations and focus only on genuinely problematic matches.

Batch processing for high-volume workflows

Paid plans allow uploading multiple documents simultaneously for bulk checking. This is essential for agencies or institutions processing dozens or hundreds of submissions in a single batch. Results are returned in a consolidated view.

Organizations handling large content volumes can maintain originality checks without creating a manual bottleneck.

Document privacy and data handling controls

Uploaded documents are not added to the public comparison database unless explicitly opted in. This matters for businesses handling sensitive or unpublished material that should not be indexed for future searches.

Legal and compliance teams can use the tool without risking exposure of confidential drafts or proprietary content.

• Confidentiality by designYour files are never added to comparison databases and are never shared with other plagiarism checkers, ensuring your work remains private.
• Multilingual supportOur plagiarism checker supports 129 languages, making it fully multilingual and suitable for users worldwide.
• Free for educatorsWe offer our plagiarism checker free of charge to teachers, lecturers, and professors from schools and universities globally, supporting academic integrity.
• Extensive scientific databaseUsers can compare documents against a database of over 80 million scientific articles from recognized academic publishers, ensuring comprehensive coverage.

• Real-time search capabilityOur checker can identify similarities with documents published as recently as 10 minutes ago on popular websites. This feature is valuable but may have limitations in coverage or speed depending on the source.
• Citation highlightingWe highlight correct citations in green and incorrect ones in purple. However, the accuracy of this feature may vary, and users should manually verify flagged citations.
• Free initial checkWe provide a free initial plagiarism check and similarity score. However, detailed reports may require purchase, and the extent of the free service is not fully specified.

Content agency quality control

Agencies producing hundreds of blog posts monthly can use Plag to verify each draft before client delivery. Batch processing and exclusion lists streamline the workflow, and detailed reports provide proof of originality for client audits.

University submission integrity

Academic departments can upload student essays and theses for originality checks. The multi-language support helps international programs, while exclusion lists handle common reference sources to reduce false flags.

Freelance writer self-checking

Freelancers can use the free tier to check their own work before submitting to clients, building a reputation for original content without paying for a subscription.

Publishing manuscript review

Publishing houses can scan incoming manuscripts against web sources and their own archives to identify potential copyright issues before committing to publication.

Go to Plag.lv and create a free account using your email address.

Upload a document (PDF, Word, or TXT) or paste text directly into the editor.

Click 'Check Plagiarism' and wait for the scan to complete — typically under 30 seconds.

Review the color-coded report, click flagged sources to verify matches, and download the report if needed.