SmallSEOTools Plagiarism Checker

Web · API · Extension · paid plans from $7.84/mo

Freedom report

Two barsScore 6.4

  • Free tierA free tier is on its own pricing page
  • Open codeNo open-source code on record
  • Runs widely1 of 6 device platforms
  • DocumentedPlans, terms and facts published

SmallSEOTools Plagiarism Checker compares submitted content with online sources and returns a report of matches. Users can paste text, upload from local or cloud storage, or check a URL. Supported upload formats include .doc, .docx, .txt, .tex, .rtf, .odt, and .pdf. Reports show duplication scores, exact and partial matches, flagged sentences, and URLs for matched sources. Quotations, references, and other properly attributed material can be excluded from the similarity score. The checker says it detects paraphrased content and synonym substitutions as well as exact matches, and supports more than 25 languages. Reports can be downloaded in PDF or Word format. The free checker allows up to 1,000 words per scan; premium per-search limits vary by plan and can reach 30k words. The Monthly plan is 9.80 USD per month, and the Yearly plan is 94.08 USD per year. Both list a 30k-word limit, a WordPress plugin, and API access. The plugin checks content from the WordPress dashboard after an API is added in its settings. The documented API is currently for plagiarism checks. The product page says submissions are processed through a secure connection and remain confidential after analysis.

Who it is for

The checker suits students, teachers, writers, bloggers, marketers, researchers, and academics who need to review text for matches. WordPress users can also check content from the dashboard using the plugin and an API key.

What is good

  • Accepts pasted text, uploads, or URLs.
  • Reports exact and partial matches with source URLs.
  • Can exclude properly attributed material from similarity scores.
  • Exports reports as PDF or Word.

What to know first

  • Free scans are limited to 1,000 words.
  • Monthly and Yearly plans list a 30k-word limit.
  • API access is currently for plagiarism checks.

Verdict

SmallSEOTools Plagiarism Checker offers multiple input methods, match details, and report exports, with a free scan cap of 1,000 words. Consider the plan's word limit and the API's stated scope if those affect your workflow.

SmallSEOTools Plagiarism Checker plans and pricing

All plans
Free Free Up to 1,000 words per scan smallseotools.com · 4 Oct 2026
Monthly $9.80/mo Billed Monthly 35,000 + 5,000 words · 1 month validity · 30k words limit · 0 user seats · WordPress plugin · API smallseotools.com · 4 Oct 2026
Yearly $94.08/yr Billed Yearly 480,000 words · 1 year validity · 30k words limit · 0 user seats · WordPress plugin · API smallseotools.com · 4 Oct 2026
Enterprise & LMS Not published Custom Pricing API · Turnkey LMS integrations · Enterprise grade security · Customer permissions · Dedicated Customer Success Team · Dedicated support smallseotools.com · 4 Oct 2026

Compared on plagiarism checkers

Free plan
Yes
Paid from
$9.80/mo
API access
Yes

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