Prooflytics
Marketing Analytics Blog
Benchmarks, attribution frameworks, and platform guides for performance marketers. How to diagnose, decide, and act — without the dashboard fatigue.
- SEO
llms.txt: How to Make Your Marketing Site Readable by AI Agents
Google added llms.txt to Lighthouse agentic audits in May 2026, making it a measurable signal for how well sites expose their content to AI crawlers. llms.txt is a plain-text file at the root of your domain that tells AI agents what content is available, how to use it, and what is off-limits -- a robots.txt for the agentic web. Here is what to put in it.
9 min read - SEO
Canonical Tag Antipatterns: Why Google Ignores Your Consolidation Signals
Canonical tags are hints, not directives. Google ignores a canonical that points to a 404, a redirect chain, a noindex page, or a relative URL. When canonicals are misconfigured, duplicate pages split ranking signals instead of consolidating them. Here are the six antipatterns that silently break canonicalization.
8 min read - SEO
Mobile-First Indexing: Why Content Hidden on Mobile Is Missing from Google's Index
Since 2023, Google crawls and ranks all sites using the mobile version of the page. Content that exists on desktop but is hidden or absent on mobile is not indexed. If your rankings underperform relative to your content investment, a desktop/mobile content parity gap may be the cause. Here is how to diagnose and fix it.
9 min read - SEO
Core Web Vitals Thresholds 2026: LCP, INP, and CLS Benchmarks for Marketers
Google updated its Core Web Vitals in 2024 with INP replacing FID as the interactivity metric. In 2026, these three thresholds determine whether a page earns Google's "Good" CWV label and passes the page experience ranking signal. Here is what each metric measures, the exact thresholds, and how to prioritize fixes.
9 min read - SEO
JavaScript CSR Pages Are Invisible to AI Search Crawlers: What to Fix
AI answer engines including ChatGPT, Perplexity, and Google AI Overviews use bots that do not execute JavaScript. If your pages use client-side rendering, AI crawlers see an empty shell -- not your content. Here is how to diagnose the problem and what server-side rendering fixes it.
9 min read - SEO
Robots.txt vs Noindex: What Each Controls and When to Use Which
Robots.txt blocks crawlers from reading a page. Noindex prevents a page from appearing in search results. They are not interchangeable -- using the wrong one can cause pages to surface in SERPs despite your intent. This guide clarifies which control to use for SEO, AI crawlers, and staging environments.
9 min read
