Back to Tools

Core Update Analyser

Use cases

Diagnosing core update impact Finding affected site sections Prioritising recovery efforts Reporting on algorithm changes

Analyses Ahrefs position change data to identify which site sections gained or lost rankings.

Groups by URL folder at multiple depth levels, with metrics for keyword counts and search volume changes across position ranges: Top 3, Pages 1-10, and Pages 11-100.

Calculates median position shifts per folder.

Streamlit App

Platform

Browser-based (no installation required)

Input

Ahrefs Position Changes CSV (Organic Keywords 2.0 report)

Ahrefs position changes CSV

Output

Excel with ranking changes by folder

Launch App View Source

Features

  • Hierarchical folder analysis (all URL depth levels)
  • Position range breakdown: Top 3, Pages 1-10, Pages 11-100
  • Keyword count and search volume change metrics
  • Median position shift calculation per folder
  • Multi-sheet Excel export (domain summary + depth-specific sheets)

How to use

  1. 1 Export position changes from Ahrefs comparing before/after core update dates
  2. 2 Upload the CSV (handles UTF-8 and Latin-1 encoding)
  3. 3 View domain-level summary stats (keyword/volume gains and losses)
  4. 4 Filter by URL depth to drill into specific folder levels
  5. 5 Download Excel with domain summary, all folders, and depth-specific sheets

Want me to run this for you?

I offer this as a managed service. You get the insights without touching the tool.

Get in Touch

Related Tools

Google Trends Forecasting

Reporting

Forecast search trends using NeuralProphet ML.

BCG Matrix Generator

Reporting

Generate BCG matrix visualisations from GA landing page reports with cascading folder analysis.

Resolution Screenshot Tool

Reporting

Capture screenshots at GA visitor resolutions using Pyppeteer async browser automation.

Let's work together

Monthly retainers or one-off projects. No lengthy reports that sit in a drawer.

Let's Talk