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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Feature requests for Historical Page Comparison
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Tentang alat
alat laporan derived pengamatan dan tidak grant rights di third-party archived konten. Tinjau Umum Rayapi’s saat ini ketentuan dan originating situs’s rights sebelum mengandalkan pada archived material di commercial produk.
Apa melakukan alat bandingkan?
Historis tangkap data comes dari Umum Rayapi; situs tidak affiliated dengan ini. Umum Rayapi sampel web, so tangkapan dapat menjadi tidak ada, tidak lengkap, truncated, atau represented oleh mengunjungi ulang catatan tanpa payload. alat kueri hanya sedikit tanggal-relevan rayapi indexes dan tidak pernah promises lifetime cakupan.
Fitur
- Apa ini memeriksa
- Tidak. Umum Rayapi sampel web dan tidak tangkap setiap URL pada setiap rayapi. Hilang, tidak lengkap, mengunjungi ulang-hanya, dan truncated catatan adalah reported sebagai cakupan batasan daripada daripada converted menjadi lulus atau kegagalan.
- Umum Rayapi attribution dan batasan
- Hanya gunakan tangkapan pada atau sebelum (opsional)
- service selects satu tanggal-relevan Umum Rayapi indeks catat, membaca satu dibatasi WARC byte range, dan mengambil saat ini publik halaman melalui guarded endpoint. Ini mengekstrak sebanding mentah-HTML fakta dan capped teks excerpts; ini tidak replay archived JavaScript atau subresources.
Cara kerja
Ini membandingkan satu tepat URL’s dipilih Umum Rayapi tangkap dengan saat ini publik halaman: judul, H1, meta deskripsi, canonical, robots direktif, word count, structured-data jenis, dibatasi teks similarity, dan capped added/removed excerpts. Tangkap dan saat ini HTTP statuses adalah ditampilkan secara terpisah sebagai sumber pengamatan, tidak sebagai status-riwayat comparison. Bandingkan satu Umum Rayapi tangkap dengan saat halaman’s dibatasi mentah-HTML SEO sinyal dan diekstrak teks. Gratis, tanpa pendaftaran. Bandingkan satu dibatasi Umum Rayapi tangkap dengan saat ini publik halaman. Cakupan adalah diambil sampelnya bukti—tidak proof dari setiap versi yang existed. Tepat halaman URL
Batasan
- dibatasi comparison dapat tunjukkan tangkap timestamp dan rayapi indeks alongside berubah judul, canonical, atau structured-data jenis. Ini laporan hanya dipilih tangkap dan saat ini mentah HTML; hilang tangkap atau perbedaan adalah bukti untuk tinjau, tidak lengkap versi riwayat atau automatic SEO cacat.
- Melakukan hilang tangkap mean halaman tidak pernah existed?
- Dapat I gunakan hasil commercially?
- Dapat I lihat atau unduh lengkap archived halaman?
Pertanyaan umum
Gratis, tanpa pendaftaran. Bandingkan satu dibatasi Umum Rayapi tangkap dengan saat ini publik halaman. Cakupan adalah diambil sampelnya bukti—tidak proof dari setiap versi yang existed.
Tepat halaman URL
Teramati halaman sinyal
comparison menunjukkan derived pengamatan dan small dibatasi excerpts—tidak license untuk republish third party’s archived halaman. Tinjau Umum Rayapi Ketentuan dari Gunakan dan apa pun rights atau ketentuan yang apply untuk originating halaman sebelum commercial reuse.
Contoh hasil
hasil membandingkan judul, deskripsi, H1, word count,,, dan jenis. Similarity dan excerpts gunakan ternormalisasi diekstrak teks dari dibatasi mentah HTML; mereka tidak dirender-halaman replay.
Tidak. service retrieves satu tepat WARC byte range dan mengembalikan hanya derived fakta dan dibatasi teks excerpts. Ini tidak provide penuh-halaman archive viewer, execute archived JavaScript, atau muat archived subresources.
Bandingkan historis vs saat ini