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Free research tools
Small, free tools for checking facts, sources and writing. Most run entirely in your browser.
105 free tools
Text & Writing
- Word & Character CounterCount words and characters and estimate reading time.Runs in your browser
- Character CounterMeasure text length and character counts.Runs in your browser
- Text Cleaner & Case Converter: Fix Copied TextClean copied text and change its capitalization.Runs in your browser
- Free Text Compare: See Differences Between Two TextsSee which words changed between two versions.Runs in your browser
- Two-Text Similarity CheckerCompare overlap between two text passages.Runs in your browser
- Readability ScorerEstimate how easy a passage is to read.Runs in your browser
- Passive Voice & Hedge DetectorHighlight possible passive phrasing and hedging.Runs in your browser
- Weasel Word DetectorFind vague wording that may need clearer support.Runs in your browser
- Cliché & Filler DetectorFlag common clichés and filler phrases.Runs in your browser
- Sentence Rhythm AnalyzerCompare sentence lengths and their variation.Runs in your browser
- Keyword Density CheckerMeasure how often terms appear in your text.Runs in your browser
- Title Case ConverterChange title capitalization using supported styles.Runs in your browser
- Slug & URL EncoderTurn a title into a URL-friendly slug.Runs in your browser
- Invisible Character DetectorFind hidden characters in pasted text.Runs in your browser
- Markdown Editor & PreviewWrite and preview Markdown text.Runs in your browser
- Free Headline Analyzer: Length, Clickbait and Absolute ClaimsCheck length, clickbait phrasing and absolute claims.Runs in your browser
- SERP & Open Graph PreviewPreview a page title and description as a search snippet.Runs in your browser
- No-AI Text SummarizerSelect key sentences using word frequency. No AI; see every selected sentence.Runs in your browser
- Word Frequency & N-gram CounterFind frequent words and phrases with an optional stopword filter.Runs in your browser
- Acronym ExtractorFind likely acronyms in text and show their surrounding context.Runs in your browser
Research & Citations
- Free DOI & Retraction CheckerCheck DOI records for listed retractions or corrections.Looks up public registries
- Free DOI Citation Generator: APA, MLA, Chicago, HarvardTurn DOIs into references in six citation styles.Looks up public registries
- ISBN Book CiterFind book metadata using an ISBN.Looks up Open Library
- arXiv Paper FinderSearch arXiv for research preprints.Looks up the public arXiv registry
- PubMed LookupRetrieve publication details from PubMed.Looks up the public PubMed registry
- Reference Format ConverterConvert reference data between supported formats.Runs in your browser
- Citation Reference CheckerVerfiai hesabıyla ücretsiz: kaynakçaları üst veriler, geri çekme bildirimleri ve atıf riskleri açısından kontrol edin.Herkese açık kaynaktan sonuç almak için Verfiai'ye ücretsiz giriş gerekir.
- Wikipedia Article Citation FormatterLook up a Wikipedia article and format a basic citation from its metadata.Uses a public keyless API
- Open Access Paper FinderCheck OpenAlex and Unpaywall for a legal open-access copy of a DOI.Uses a public keyless API
- Scholarly Works SearchSearch OpenAlex for scholarly works; results are cached per query this session.Uses a public keyless API
- bioRxiv & medRxiv Preprint FinderSearch recent bioRxiv and medRxiv metadata from their public APIs.Uses a public keyless API
- Connected PapersOpens an external free tool: a paper title search on Connected Papers.Opens an external free tool
- Google Scholar SearchOpens an external free tool: a title or author search in Google Scholar.Opens an external free tool
- DOAJ Dergi DenetleyicisiBir dergi veya makalenin Directory of Open Access Journals içinde listelenip listelenmediğini denetleyin.Queries the public DOAJ API from your browser
- Semantic Scholar AramaAtıflar, yıl, yayın yeri ve açık erişim bağlantılarıyla akademik makale ve yazarları bulun.Queries the public Semantic Scholar API from your browser
- OpenCitations DOI GezginiOpenCitations ile bir DOI için gelen atıfları ve kaynakçaları inceleyin.Queries the public OpenCitations API from your browser
- Veri Kümesi ve DOI BulucuZenodo veri kümelerini arayın ve DataCite üzerinden DOI üst verilerini görüntüleyin.Queries public Zenodo and DataCite APIs from your browser
- İngilizce Sözlükİngilizce tanımları, sözcük türlerini, eş anlamlıları, zıt anlamlıları ve telaffuzları bulun.Uses the keyless Free Dictionary API
Verification & OSINT
- Claim SpotterFind checkable claims and vague or absolute wording in text.Runs in your browser
- Claim Evidence MatrixOrganize excerpts and compare how sources relate to a claim.Runs in your browser
- Logical Fallacy SpotterFlag wording that may signal a reasoning fallacy.Runs in your browser
- Source Evaluation ChecklistReview a source's authorship, evidence and transparency.Runs in your browser
- Printable Evaluation ChecklistPrint a source evaluation worksheet for offline review.Runs in your browser
- Spot the Fake HeadlineTest your eye for misleading framing in a scored quiz.Runs in your browser
- Misinformation GlossaryBrowse plain-language definitions of reasoning and source-checking terms.Static reference
- Phishing Red-Flag ChecklistWork through a manual review of suspicious messages.Runs in your browser
- Link ExpanderFollow redirects to inspect a link's destination.Requests the linked website from your browser
- Photo Check: View Photo Metadata and Reverse Image SearchRead photo metadata and open reverse image searches.Metadata stays in your browser; search links open external services
- GDELT News Coverage SearchSearch GDELT's public news index with a single paced request per search.Herkese açık kaynaktan sonuç almak için Verfiai'ye ücretsiz giriş gerekir.
- Google Fact Check ExplorerOpens an external free tool: a prefilled Google Fact Check Explorer search.Opens an external free tool
- InVID-WeVerify Video VerificationOpens an external free tool: the InVID-WeVerify verification toolkit guide.Opens an external free tool
- Image Forensics ToolsOpens external free tools: FotoForensics and Forensically image checks.Opens an external free tool
- DNS DenetleyicisiAçık A, AAAA, MX, TXT, NS, CNAME ve SOA DNS kayıtlarını inceleyin.Queries Cloudflare DNS-over-HTTPS from your browser
- Sertifika GezginiAçık TLS sertifikalarının geçmişini, verenleri, tarihleri ve keşfedilen alt alan adlarını inceleyin.Queries the public crt.sh certificate database
- Telefon Numarası DoğrulayıcıTelefon numaralarını ülke, tür ve E.164 biçimiyle yerel olarak ayrıştırıp doğrulayın.Validates locally; no network request
- IP Adresi DenetleyicisiGenel IP adresinizi denetleyin veya IP adresi, konum, kuruluş ve ASN arayın.Uses the keyless ipwho.is public API
- Video Araştırma RehberiVideo dökümlerini araştırma, alıntıları doğrulama ve özgün kaynağı bulma için pratik rehber.Static guide
- Bilgiler Nasıl Kontrol EdilirFotoğrafları, kaynakları, alıntıları ve çevrimiçi iddiaları denetlemeye ilişkin yaygın sorulara yanıtlar.Static guide
- Ücretsiz Araştırma Şablonları ve Doğrulama Rehberleriİddialar, kanıtlar, atıflar ve uyumluluk için kontrol listeleri ve kayıtlar indirin.Static guide
Data & Numbers
- Numbers-in-News CheckerInspect numerical claims for issues worth checking.Runs in your browser
- Sample Size CalculatorEstimate a survey sample size from your assumptions.Runs in your browser
- CSV to JSON ConverterConvert structured data between CSV and JSON.Runs in your browser
- Timestamp ConverterConvert timestamps and readable dates.Runs in your browser
- Date & Deadline CalculatorCalculate days between dates, weekdays, and future deadlines.Runs in your browser
- Polling Margin of Error CalculatorEstimate a poll's margin of error from its sample size and proportion.Runs in your browser
- Birim DönüştürücüUzunluk, ağırlık, sıcaklık, hız, alan, hacim ve veri boyutunu çevrimdışı dönüştürün.Calculates offline in your browser
- Para Birimi DönüştürücüGeçmiş tarihler dâhil, ücretsiz Frankfurter kurlarıyla para birimlerini dönüştürün.Uses the keyless Frankfurter public API
- Yüzde HesaplayıcıBir değerin yüzdesini, yüzde payını veya yüzde değişimini hesaplayın.Calculates offline in your browser
- Hesap MakinesiKlavye desteği olan temel bir aritmetik hesap makinesi.Calculates offline in your browser
- Yaş ve Tarih HesaplayıcıYaşı, tarihler arasındaki günleri hesaplayın veya takvim günleri ekleyip çıkarın.Calculates offline in your browser
Email & Communication
- Subject Line PreviewPreview email subject lines and their length.Runs in your browser
- Email Header AnalyzerInspect pasted email headers for useful clues.Runs in your browser
- Disposable Email CheckerCheck an email domain against a disposable-domain list.Runs in your browser
- Mailto Link BuilderBuild an email link with subject and message fields.Runs in your browser
- Speech-to-Text DictationTranscribe speech with your browser's recognition service.Uses browser speech recognition; processing depends on the browser
- Text-to-Speech ReaderRead text aloud with available browser voices.Uses your browser's speech service
Developer & Utilities
- URL InspectorInspect a URL's structure and parameters.Runs in your browser
- File Hash VerifierCalculate a file digest without uploading the file.Runs in your browser
- QR Code GeneratorCreate a QR code from text or a URL.Sends entered text to the public QR Server service
- Password GeneratorGenerate random passwords in your browser.Runs in your browser
- Quote Card GeneratorFormat a quote and attribution as a shareable card.Runs in your browser
- Regex TesterTest a regular expression live and explore common pattern examples.Runs in your browser
- Cron Expression ExplainerExplain common five-field cron schedules and preview upcoming run times.Runs in your browser
- Color Contrast CheckerCheck WCAG contrast ratios and AA/AAA text accessibility thresholds.Runs in your browser
- QR Code ScannerRead a QR code from an image or camera in your browser.Runs in your browser
- Encode, Decode & SHA-256Encode Base64 or URL text and calculate a SHA-256 text digest locally.Runs in your browser
Productivity
- FOI Request GeneratorDraft a request for access to public information.Runs in your browser
- Random Picker & ShufflerChoose randomly from a list of options.Runs in your browser
- Pomodoro TimerTime focus sessions and breaks.Runs in your browser
- PDF Merge, Split & RotateWork with PDF files using browser-based utilities.Runs in your browser
- Image Compressor & ResizerCompress or resize JPG, PNG, and WebP images locally in your browser.Runs in your browser
- Image Text Extractor (OCR)Extract text from an image on-device with a lazily loaded OCR engine.Runs in your browser
- SRT Subtitle Timing ShifterShift subtitle timestamps by a fixed offset and correct SRT timing format.Runs in your browser
- Bilgi Kartı OluşturucuÖzel bilgi kartı desteleri oluşturun; kartları yerel olarak gözden geçirin, karıştırın ve takip edin.Saved only in your browser
- Kronometre ve ZamanlayıcıTur süreli kronometre veya görsel geri sayım zamanlayıcısı kullanın.Runs locally in your browser
- Hızlı NotlarÖzel notlar yazın, otomatik kaydedin ve metin dosyası olarak dışa aktarın.Saved only in your browser
- Ücretsiz ÇevirmenMetni cihazınızın yerleşik çevirmeniyle veya ücretsiz MyMemory API ile çevirin.On-device first; keyless MyMemory fallback
- Döküm ÇevirmeniUygun olduğunda dökümü yerel olarak veya ücretsiz, anahtarsız API ile yan yana çevirin.On-device first; keyless MyMemory fallback
Professional Sources
- ORCID Author LookupFind public researcher records by ORCID identifier.Looks up the public ORCID registry
- Wayback Machine CheckerLook for an archived capture of a web page.Looks up Internet Archive
- Domain Age CheckerLook up public domain registration information.Looks up public RDAP registration records
- Wikidata Entity LookupSearch Wikidata for entity labels, descriptions, and item identifiers.Uses a public keyless API
- Europe PMC Open Access ReaderFind biomedical articles and open available full text from Europe PMC.Uses a public keyless API
- SEC Filings Full-Text SearchSearch SEC EDGAR filing text for public company disclosures.Herkese açık kaynaktan sonuç almak için Verfiai'ye ücretsiz giriş gerekir.
- World Bank Data LookupLook up official country statistics using World Bank indicator codes.Uses a public keyless API
Research templates and verification guides
Download practical checklists and logs for claims, evidence, citations, and compliance. Browse free research templates and guides ↗
Executive tools directory
Explore a curated directory of external services for company research, media monitoring, documents, reporting, meetings and professional communication. Browse executive tools ↗
What these tools do not do
None of these tools tells you whether text was written by AI, and none of them proves that something is true. They point you to what is worth checking and show the evidence they found. Tools that look things up use public registries and have fair-use limits.