Private digital intelligence bureau Lawful OSINT — Cyber monitoring — Due diligence

Public research resources · FR / EN

Web archives and preservation · OSINT

What did a page show at a particular time ? Practical method, external tools, source log and interpretation limits.

External services · no results hosted here · queries sent only when you click a provider link.

References reviewed · Published

Bookshelves in a library
Context photograph · Karina Lysenko · Licence

What did a page show at a particular time ?

  1. Identify the precise URL, including path and parameters relevant to the page.
  2. Inspect several snapshots around the period and record their dates.
  3. Check whether images, links, scripts and documents belong to the same snapshot.
  4. Compare with the current page and retain a description of observed differences.

Keep these fields in the source log

  • Requested URL and archive URL
  • Capture timestamp and timezone
  • Missing elements or content loaded from the live site

What the method cannot establish alone

An archive establishes an available capture, not initial publication or author identity. Do not make sensitive information public by archiving it.

External tools for this pathway

Editorial selection of external services and resources, described using their portals or documentation. References reviewed on 3 October 2026; availability, prices, quotas and interface languages can change. Subscriptions and paid features were not tested.

3 catalogue entries

Web archives and preservation

Wayback Machine ↗

International · Public entry point

Inspect historical URL snapshots and compare page changes.

Limit: Capture time is not publication time; scripts and media may be missing.

Publisher reference ↗

Web archives and preservation

Internet Archive ↗

International · Access / quotas vary

Locate collections, books, recordings and documents in a digital library.

Limit: Metadata and rights vary by collection; check the specific item.

Publisher reference ↗

Web archives and preservation

Perma.cc ↗

International · Account for some actions

Preserve a web reference and retain its archive link with a citation.

Limit: Creating captures depends on the account; avoid archiving sensitive content.

Publisher reference ↗

These downloads contain tool descriptions and links, not provider search results. Retain limitations, references and review dates when reusing the catalogue.

Questions about tools and external searches

Where are search results displayed?

On the selected provider’s website, in a new tab. IIS does not retrieve, host or display investigation results. Directory filters only filter the editorial catalogue.

Is the typed query stored?

The launchpad builds links inside your browser, without sending the query to IIS or storing it in browser storage. Clicking a prepared link sends the query to the named provider, under its own rules.

Are all tools free and available in every language?

No. Access may require an account, subscription, software or quota. The catalogue is available in French and English; providers set their interface languages, coverage and conditions.

Does no result prove that a fact is false?

No. Index coverage, spelling, language, access limits and capture dates can explain a missing result. Record what was searched and what remains unknown.