Question 1

How does the SEO Experiment Tracker work?

Accepted Answer

Paste before and after CSV data (one row per page: page,metric_value). The tool computes per-page deltas, % change, classifies winners/losers/neutral pages, calculates aggregate totals and averages, runs a basic significance check (winner count + magnitude of change), and produces a recommendation: roll out, roll back, or extend the test.

Question 2

What experiment types are supported?

Accepted Answer

Five preset types: title-tag, meta-description, content-change, url-structure, and internal-linking. Each preset ships with a default hypothesis template. Control metric can be organic-traffic, rankings, clicks, impressions, or conversions.

Question 3

How is significance determined?

Accepted Answer

Basic heuristic: if winners > losers AND average % change > +5%, the experiment is 'winning'. If losers > winners AND average % change < -5%, it's 'losing'. Otherwise 'inconclusive'. The confidence score (0-100) combines sample size (pages affected) and magnitude of change.

Question 4

What extra features does this tool have compared to others?

Accepted Answer

(1) Before/after CSV parser with header detection. (2) Per-page delta calculator. (3) Per-page % change calculator. (4) Aggregate metrics (total, average). (5) Winners/losers/neutral categorizer. (6) Basic statistical significance checker. (7) Recommendation generator (roll out / roll back / extend). (8) Experiment status tracker (planned/running/completed/paused). (9) Experiment type presets (5 types). (10) Control metric presets (5 options). (11) Text report. (12) CSV export. (13) Copy + Download .txt + Download CSV. (14) History (localStorage, last 20). (15) Shareable URL. (16) Filter (winners/losers/all). (17) Summary stats. (18) Confidence score (0-100).

Question 5

Is my data sent anywhere?

Accepted Answer

No. All parsing, scoring, and reporting happens locally in your browser. History is stored in localStorage on this device only.

SEO Experiment Tracker

How to use