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Head-to-head · Plagiarism Checkers

Crossref Similarity Check vs StrikePlagiarism

  • Updated Oct 2026
  • Both researched from official sources
  • 5 checks side by side
Higher score Crossref Similarity Check #2 in Plagiarism Checkers 9.2/10 Paid ✓ 3 of 4 features Visit Crossref
StrikePlagiarism #6 in Plagiarism Checkers 8.7/10 Paid ✓ 4 of 4 features Try StrikePlagiarism

Crossref Similarity Check leads on 0 checks, StrikePlagiarism on 0, and 5 are even. Who comes out ahead on the 5 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreCrossref Similarity Check · 9.2/10
  • Most featuresStrikePlagiarism · 4 of 4

Crossref Similarity Check scores higher on our rubric for plagiarism checkers: 9.2 against 8.7 out of 10; our editors rank them #2 and #6.

Crossref Similarity Check is the better fit for publishers and journals checking manuscripts. StrikePlagiarism is the better fit for academic institutions needing broad, deep checking.

  • Crossref Similarity Check fits best

    Publishers and journals checking manuscripts

  • StrikePlagiarism fits best

    Academic institutions needing broad, deep checking

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Side by side

Feature Crossref Similarity Check 9.2/10 Visit ↗ StrikePlagiarism 8.7/10 Visit ↗
At a glance
Editor score 9.2 8.7
Ranking #2 in Plagiarism Checkers #6 in Plagiarism Checkers
Best for Publishers and journals checking manuscripts Academic institutions needing broad, deep checking
Pricing model Paid Paid
Starting price — €2.33/unit usage-based
Free plan — —
Free trial — —
Deployment Cloud Cloud, Self-hosted
Platforms Web Web
Support Email, Phone, Docs Email, Phone, Tickets · 24/7
Integrations 5 integrations 7 integrations
Built for Small business, Mid-market, Enterprise Small business, Mid-market, Enterprise
Features Crossref Similarity Check 3/4 · StrikePlagiarism 4/4
Web source matching ✓ ✓
Academic source matching ✓ ✓
API access ✓ ✓
LMS integration Not checked yet ✓ (best)
Specs
Supported languages Not checked yet Not checked yet
Word limit Not checked yet Not checked yet
Report export formats PDF HTML, PDF
Our review
Pros
  • Compares manuscripts with academic content and current or archived web pages
  • Detailed reports include scores, highlighted matches, filters, and PDF export
  • API access supports manuscript submission systems, including OJS
  • Checks web, scholarly, academic, publisher, university, and partner sources
  • Adds paraphrase, translated-text, manipulation, and AI-content detection
  • Supports LMS integrations, assignment workflows, feedback, and REST API access
Cons
  • Available only to eligible Crossref members
  • Annual service fee is required
  • First 100 documents are limited to 25,000 words each
  • Paid individual access is priced per token rather than per month
  • Additional checking services may increase the final price
  • Free-plan terms vary by region
Our verdict

Crossref Similarity Check is a manuscript-screening service for Crossref members, powered by Turnitin’s iThenticate software. Publishers and editors can upload manuscripts or submit them through a manuscript submission system using an API.…

Read the review →

StrikePlagiarism is a web-based academic integrity system for universities, schools, publishers, researchers, and individual authors. Its core function is similarity checking across open internet sources, scientific journals, academic…

Read the review →
  1. Crossref Similarity CheckPlagiarism Checkers 9.2Paid
  2. StrikePlagiarismPlagiarism Checkers 8.7Paid

Strengths and trade-offs

  • Crossref Similarity Check — where it wins

    • Compares manuscripts with academic content and current or archived web pages
    • Detailed reports include scores, highlighted matches, filters, and PDF export
    • API access supports manuscript submission systems, including OJS

    Where it doesn't

    • Available only to eligible Crossref members
    • Annual service fee is required
    • First 100 documents are limited to 25,000 words each

  • StrikePlagiarism — where it wins

    • Checks web, scholarly, academic, publisher, university, and partner sources
    • Adds paraphrase, translated-text, manipulation, and AI-content detection
    • Supports LMS integrations, assignment workflows, feedback, and REST API access

    Where it doesn't

    • Paid individual access is priced per token rather than per month
    • Additional checking services may increase the final price
    • Free-plan terms vary by region

More comparisons

All plagiarism checkers comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update