Historical Page Comparison
Free, no signup. Compare one bounded Common Crawl capture with the current public page. Coverage is sampled evidence—not proof of every version that existed.
Checks run from our server; we fetch the URL you enter and don't keep the results. The exact URL is sent in a POST body to this site, then used for bounded Common Crawl index/WARC lookup and a safe current-page fetch. Results may be cached; raw archived HTML is not returned. 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.
Site passport Local context for this saved site
Local data
Saved targets, named lists, and recent check summaries remain only in this browser.
Observed page signals
Bounded text changes
How to use it
- Enter one exact public HTTP(S) page URL.
- Optionally choose a before date to prefer an older capture.
- Run the comparison and verify the capture timestamp and crawl index.
- Review changed signals and excerpts. A difference is a review prompt, not an automatic SEO defect.
Example result
A bounded comparison can show a capture timestamp and crawl index alongside a changed title, canonical, or structured-data type. It reports only the selected capture and current raw HTML; a missing capture or a difference is evidence to review, not a complete version history or an automatic SEO defect.
How it works
The service selects one date-relevant Common Crawl index record, reads one bounded WARC byte range, and fetches the current public page through the guarded endpoint. It extracts comparable raw-HTML facts and capped text excerpts; it does not replay archived JavaScript or subresources.
What it checks
The result compares the title, description, H1, word count, canonical URLHow search engines pick one canonical URL among duplicates and consolidate signals onto it., robots directivesThe robots meta tag is an HTML element in a page's head — <meta name="robots" content="noindex"> — that tells search engines how to index and serve that page. It's crawl-then-obey: a page blocked in robots.txt is never fetched, so the tag is never seen., and JSON-LDJSON-LD (JavaScript Object Notation for Linked Data) is a script-based structured data format, typically paired with the schema.org vocabulary to describe page content for search engines and AI systems. Google recommends it over Microdata and RDFa because it's the easiest format to implement and maintain at scale — but all three work, and structured data isn't a ranking signal. types. Similarity and excerpts use normalized extracted text from bounded raw HTML; they are not a rendered-page replay.
Common Crawl attribution and limitations
Historical capture data comes from Common Crawl; this site is not affiliated with it. Common Crawl samples the web, so captures can be absent, incomplete, truncated, or represented by revisit records without a payload. The tool queries only a few date-relevant crawl indexes and never promises lifetime coverage.
The comparison shows derived observations and small bounded excerpts—not a license to republish a third party’s archived page. Review the Common Crawl Terms of Use and any rights or terms that apply to the originating page before commercial reuse.
Frequently asked questions
What does the tool compare?
It compares one exact URL’s selected Common Crawl capture with the current public page: title, H1, meta description, canonical, robots directives, word count, structured-data types, bounded text similarity, and capped added/removed excerpts. Capture and current HTTP statuses are shown separately as source observations, not as a status-history comparison.
Does a missing capture mean the page never existed?
No. Common Crawl samples the web and does not capture every URL on every crawl. Missing, incomplete, revisit-only, and truncated records are reported as coverage limits rather than converted into a pass or failure.
Can I view or download the complete archived page?
No. The service retrieves one exact WARC byte range and returns only derived facts and bounded text excerpts. It does not provide a full-page archive viewer, execute archived JavaScript, or load archived subresources.
Can I use the result commercially?
This tool reports derived observations and does not grant rights in third-party archived content. Review Common Crawl’s current terms and the originating site’s rights before relying on archived material in a commercial product.
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Sobre a ferramenta
Grátis, sem cadastro. Compare um limitado Comum Rastreamento captura com o atual público página. Coverage é sampled evidência—não prova de cada version que existed.
Compare um Comum Rastreamento captura com o atual page’s limitado raw-HTML SEO signals e extracted texto.
Recursos
- O service selects um date-relevant Comum Rastreamento índice registro, reads um limitado WARC byte intervalo, e busca o atual público página por o guarded endpoint. Isso extracts comparável raw-HTML facts e limitado texto excerpts; isso faz não replay archived JavaScript ou subresources.
- Isso compares um exato URL’s selecionado Comum Rastreamento captura com o atual público página: título, H1, meta descrição, canonical, robots directives, word count, structured-data tipos, limitado texto similarity, e limitado adicionado/removido excerpts. Captura e atual HTTP statuses são mostrado separately como origem observações, não como um status-history comparação.
- Um limitado comparação pode mostrar um captura timestamp e rastreamento índice alongside um changed título, canonical, ou structured-data tipo. Isso relatórios somente o selecionado captura e atual raw HTML; um ausente captura ou um difference é evidência para revisão, não um Concluído version histórico ou um automatic SEO defect.
- Observado página signals
Como funciona
O service selects um date-relevant Comum Rastreamento índice registro, reads um limitado WARC byte intervalo, e busca o atual público página por o guarded endpoint. Isso extracts comparável raw-HTML facts e limitado texto excerpts; isso faz não replay archived JavaScript ou subresources.
Limitações
- Histórico captura dados comes de Comum Rastreamento ; este site é não affiliated com isso. Comum Rastreamento amostras o web, so captures pode ser ausente, incompleto, truncado, ou represented por revisit registros sem um payload. O ferramenta consultas somente um few date-relevant rastreamento indexes e never promises lifetime coverage.
- Não. Comum Rastreamento amostras o web e faz não captura cada URL em cada rastreamento. Ausente, incompleto, revisit-only, e truncado registros são reported como coverage limites rather than converted em um pass ou failure.
Perguntas frequentes
O que faz o ferramenta compare?
Isso compares um exato URL’s selecionado Comum Rastreamento captura com o atual público página: título, H1, meta descrição, canonical, robots directives, word count, structured-data tipos, limitado texto similarity, e limitado adicionado/removido excerpts. Captura e atual HTTP statuses são mostrado separately como origem observações, não como um status-history comparação.
Faz um ausente captura mean o página never existed?
Não. Comum Rastreamento amostras o web e faz não captura cada URL em cada rastreamento. Ausente, incompleto, revisit-only, e truncado registros são reported como coverage limites rather than converted em um pass ou failure.
Pode I usar o resultado commercially?
Este ferramenta relatórios derived observações e faz não grant rights em third-party archived conteúdo. Revisão Comum Crawl’s atual termos e o originating site’s rights antes relying em archived material em um commercial product.
Pode I view ou download o Concluído archived página?
Não. O service retrieves um exato WARC byte intervalo e retorna somente derived facts e limitado texto excerpts. Isso faz não fornecer um full-page arquivo viewer, execute archived JavaScript, ou load archived subresources.