Glossary

Link terminology

Link previews, prefetch and click counts

Link previews and prefetches are automated or speculative requests made before a person deliberately navigates to a destination.

Also called: link preview bot, prefetch request, speculative click

Definition in plain language

Link previews and prefetches are automated or speculative requests made before a person deliberately navigates to a destination.

Link previews, prefetch and click counts request flow
  1. 1
    Request

    Inspect HTTP method, purpose headers, and known preview or crawler signals.

  2. 2
    Evaluate

    Serve a safe response where appropriate without treating the request as engagement.

  3. 3
    Decide

    Exclude speculative requests from normal capture and human-click counters.

  4. 4
    Report

    Record separately only when the product has a meaningful classified event.

Why link previews, prefetch and click counts matters

Messaging apps fetch page metadata for previews, security products inspect links, and browsers may preload likely destinations. Counting those requests as deliberate visits inflates engagement and can prematurely exhaust usage limits.

The useful question is not merely whether a request happened. It is what kind of request it was, which rule handled it, and what conclusion the resulting data can support. Clear terminology prevents teams from treating every technical event as a person, every redirect as engagement, or every click as a conversion.

How it works step by step

A short-link system evaluates a request in a defined order. The exact sequence matters because an earlier status, access, or routing decision can prevent later rules from running.

For this concept, the practical workflow is:

  1. Inspect HTTP method, purpose headers, and known preview or crawler signals.
  2. Serve a safe response where appropriate without treating the request as engagement.
  3. Exclude speculative requests from normal capture and human-click counters.
  4. Record separately only when the product has a meaningful classified event.

How to interpret the result

Read the result in the context of the configured link and the evidence available at request time. Browser signals, network location, cookies, referrers, and user agents are useful but imperfect.

Compare like with like: use the same date range, traffic filters, link ownership, and campaign definition. A change in classification or routing can change a report even when audience demand has not changed.

Deterministic example

The values below are example data, shown so every total can be checked from the visible rows.

Email security checkScannerExcluded from human click cap
Slack unfurlPreview botClassified as automation
Browser prefetchSpeculativeNot captured as normal engagement
User tapHumanCounts as qualifying redirect

Deliberate click compared with Preview or prefetch

QuestionDeliberate clickPreview or prefetch
What it representsA visitor intentionally follows the link.A client fetches the link automatically or in anticipation.
Best useMeasure qualifying redirect activity.Build previews, inspect safety, or reduce perceived latency.

Frequently asked questions

Why did my link get opened before I clicked it?

A messaging, email, security, or browser client may fetch it automatically.

Should previews be blocked?

Usually not categorically. They support useful previews and security checks, but should be classified separately.

Can a preview trigger an expiring link?

It can reach the link, but recognized speculative or bot traffic should not consume a human-click limit.