Prepostseo Plagiarism Checker
Verified working Sep 21, 2026
Checks pasted or uploaded text for web matches with percentage results.
Prepostseo Plagiarism Checker is a browser-based tool for comparing text against online sources and identifying potentially copied passages. It reports unique versus matched content as percentages, points to matching source URLs, and can generate downloadable reports.
Why it stands out
- Shows both plagiarism and uniqueness percentages at the top of the result.
- Identifies matched source URLs rather than only giving a single similarity score.
- Supports excluding a specific webpage, useful for checking content that may already exist on your own site.
- Makes the word-limit tiers explicit, from free visitor checks to higher premium allowances.
- Report download options make results easier to archive or share.
Good to know
- Free unregistered checks are capped at 1,000 words, and free registered checks are capped at 1,500 words.
- Larger checks, deep search, ad-free use, and higher word limits require premium or enterprise plans.
- The checker is described as matching against online sources via search engines, so it may not cover every private, paywalled, or offline text database.
Photos
Students, bloggers, and web writers can screen drafts for copied passages before publishing or submitting. Check an article, essay, or post by pasting text directly into the page. Upload common document files such as DOC, DOCX, PDF, or TXT for review. Exclude quoted text or a specific URL when known matches should not count. Download a PDF or HTML report to share results with an editor, teacher, or client.
Paste-text plagiarism checking, local file upload support, live word count, percentage breakdown of plagiarized and unique content, matched-source links, exact-match highlighting, URL and quote exclusions, report downloads in PDF and HTML, and a handoff to Prepostseo’s rewriting/paraphrasing tools.
Alternative listings
Checks essays for copied text while flagging writing and citation issues.
Writing & Content Creation ToolsGrammarly’s plagiarism checker lets users paste or upload a document and scan it for potential copied passages. It pairs originality checking with Grammarly’s broader writing feedback, including grammar, readability, word choice, citation formatting, and AI-use disclosure guidance.
0 votesVisit siteChecks writing for reused passages and points to matching sources.
Writing & Content Creation ToolsSmallSEOTools Plagiarism Checker is a web-based originality scanner for essays, articles, assignments, and other written work. Users can paste text, upload common document formats, or scan a URL, then review similarity scores, matched source links, and sentence-level flags.
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Similar sites elsewhere
- Quetext — quetext.com
- Copyleaks — copyleaks.com
- Scribbr Plagiarism Checker — scribbr.com/plagiarism-checker
- Grammarly Plagiarism Checker — grammarly.com/plagiarism-checker
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