اللغات

Citation Gap Checker

Free, no signup. Find claims that need a source before an answer engine repeats them, and flag dated evidence for a human re-check.

Built by Patrick Stox

Before

“Studies show conversion rose 42% in 2021.”

After

“A 2021 study reported a 42% increase [source]” — then verify the statistic remains applicable.

Pasted content is analyzed in your browser. A URL is sent only to the protected fetch endpoint; paste content takes priority. After a successful URL check, only its domain is remembered locally.

Checks run from our server; we fetch the URL you enter and don't keep the results. The claim pass runs in your browser. Up to 25 cited URLs are sent to the bounded status checker; pasted prose is not sent. Anonymous run-level outcome counters may be used for aggregate research; URLs, domains, IPs, and identifiers are never included, and no statistic is released below 100 runs.

Feedback
Report a bug

Found something broken in Citation Gap Checker? Let us know what happened — this goes straight to a private triage queue, not a public list.

What will be sent 
 No tool inputs, uploads, pasted source, complete results, query parameters, or URL fragments are attached automatically. You can edit or remove the selected passage above. Browser and anti-abuse metadata is processed for spam prevention. 
  
 
  
 
 
  
 
 
  
 
Sample report Deterministic local example
 
For “A 2021 study shows checkout changes increased conversion by 42%.”, evaluated in 2026, the engine returns one likely claim and two findings:
 
1 likely claim checked · 2 findings
Missing adjacent source — This claim has no adjacent outbound source link.
Aging evidence — This numeric claim references evidence at least three years old; confirm it still applies.
 
Both findings can be true at once: the sentence needs a source, and the source’s continued applicability needs checking.
 
 
 
How to use it
 
  1. Paste article text or HTML. The content extractor removes markup before sentence analysis.
  2. Select Check citation gaps.
  3. Review every highlighted sentence; use the search link as a research starting point, not as evidence.
  4. Add the most direct primary source beside the claim, or revise the claim when no suitable evidence exists.
 
 
      
     
 
What the results mean
 
  • Missing adjacent source — a likely factual claim contains no URL in the same sentence.
  • Aging evidence — a detected year is at least three years behind the current year.
  • Broken citation / Verify citation — supported by the engine when link-status evidence is supplied, but live status is not evaluated by this page.
  • No finding — no matching pattern was found; it is not an accuracy certificate.
 
How it works
 
The claim pass runs in the browser. It extracts readable blocks, splits them into sentences, and selects likely claims using explicit markers: numbers, percentages, research language, and strong superlative or absolute wording. It checks the same sentence for an HTTP(S) URL, extracts four-digit years, and sends at most 25 cited URLs to the bounded status checker. Evidence at least three years old receives a review flag. No model writes or judges the result.
 
Features
 
  • Accepts plain text or HTML.
  • Finds numerical, comparative, absolute, and research-style claims.
  • Separates missing sourcing from aging-evidence review.
  • Builds a prefilled source-search query for each finding.
  • Keeps pasted content in the browser.
 
Limitations
 
Adjacency is a crude proxy: a URL in the sentence may be irrelevant, while a footnote or nearby citation may be perfectly valid but still missed. The three-year threshold is intentionally generic. The bounded status check does not read papers, assess source quality, or determine whether a citation entails the exact claim. Always verify the primary source and the claim’s scope yourself.
 
Frequently asked questions
What counts as a likely claim?
The checker conservatively looks for sentences with numbers, percentages, research language, or strong comparative and absolute terms such as best, largest, always, and proves. Short fragments are ignored.
Does the tool verify that a citation supports a claim?
No. It does not fetch links or interpret source material. It only checks whether a likely claim has an adjacent URL and whether dated evidence merits a new human review.
Why is a three-year-old statistic flagged?
Three years is a review trigger, not an expiration date. Some evidence remains valid for decades; volatile market, product, and behavior statistics can become stale much sooner.
Can a clean report prove an article is accurate?
No. A clean result only means the local heuristics did not find one of their known patterns. Qualitative assertions, misleading framing, and irrelevant sources still require editorial review.
Does the checker detect broken citation links?
Yes. After the local claim pass, the page sends up to 25 cited URLs to the bounded status checker. A failed status can flag a broken citation or a DOI that needs manual verification; source relevance still requires human review.
 
 
Next stepQuotability & Entity-Preserving Rewriter — generate the corrected version.

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Feature requests for Citation Gap Checker
 

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حول الأداة
العثور غير مدعوم يدّعي, تقادم إحصائيات, و citations ذلك merit واحد حي تحقّق.
مجاني, من دون تسجيل. العثور يدّعي ذلك يحتاج واحد مصدر قبل واحد إجابة محرك يكرر هم, و علامة مؤرّخ دليل من أجل واحد بشري re-check.
الميزات
  • Accepts عادي نص أو HTML.
  • Finds numerical, مقارن, مطلق, و research-style يدّعي.
  • يفصل مفقود sourcing من aging-evidence مراجعة.
  • يبني واحد prefilled source-search استعلام من أجل كل نتيجة.
  • يحتفظ ملصق محتوى في ال متصفح.
كيفية العمل
ال يدّعي اجتياز تشغيل في ال متصفح. إنه يستخرج readable يحظر, تقسيمات هم إلى جمل, و selects على الأرجح يدّعي استخدام صريح علامات: أرقام, نسب مئوية, بحث لغة, و strong superlative أو مطلق صياغة. إنه تحقّقات ال نفس جملة من أجل واحد HTTP(S) عنوان URL, يستخرج four-digit أعوام, و يرسل في معظم 25 مستشهد به عناوين عنوان URL إلى ال محدود حالة فاحص. دليل في الأقل three أعوام قديم receives واحد مراجعة علامة. لا نموذج writes أو judges ال نتيجة.
القيود
  • Adjacency هو واحد crude وكيل: واحد عنوان URL في ال جملة قد يكون irrelevant, بينما واحد footnote أو قريب citation قد يكون perfectly صالح لكن ما زال فائت. ال three-year عتبة هو عمدًا عام. ال محدود حالة تحقّق يفعل ليس اقرأ papers, assess مصدر جودة, أو حدّد ما إذا واحد citation entails ال دقيق يدّعي. دائمًا تحقّق ال رئيسي مصدر و ال claim’s نطاق بنفسك.
الأسئلة الشائعة
ما أعداد باعتباره واحد على الأرجح يدّعي?
ال فاحص conservatively يبدو من أجل جمل مع أرقام, نسب مئوية, بحث لغة, أو strong مقارن و مطلق مصطلحات مثل باعتباره الأفضل, الأكبر, دائمًا, و يثبت. قصير أجزاء هي متجاهل.
يفعل ال الأداة تحقّق ذلك واحد citation يدعم واحد يدّعي?
لا. إنه يفعل ليس جلب روابط أو interpret مصدر مادة. إنه فقط تحقّقات ما إذا واحد على الأرجح يدّعي يحتوي واحد مجاور عنوان URL و ما إذا مؤرّخ دليل merits واحد جديد مراجعة بشرية.
لماذا هو واحد three-year-old إحصائية موسوم?
Three أعوام هو واحد مراجعة مُشغّل, ليس واحد expiration تاريخ. بعض دليل يبقى صالح من أجل decades; volatile سوق, منتج, و سلوك إحصائيات يمكن become قديم كثير sooner.
يمكن واحد نظيف تقرير يثبت واحد مقال هو دقيق?
لا. واحد نظيف نتيجة فقط يعني ال محلي استدلالات فعل ليس العثور واحد من الخاص بهم معروف أنماط. Qualitative assertions, misleading تأطير, و irrelevant مصادر ما زال يتطلب تحريري مراجعة.
يفعل ال فاحص يكتشف معطّل citation روابط?
نعم. بعد ال محلي يدّعي اجتياز, ال صفحة يرسل up إلى 25 مستشهد به عناوين عنوان URL إلى ال محدود حالة فاحص. واحد فشل حالة يمكن علامة واحد معطّل citation أو واحد DOI ذلك يحتاج manual تحقّق; مصدر صلة ما زال يتطلب مراجعة بشرية.