ANALYTICS
SEO Before/After Comparison
After a migration, a redesign or a content update, the question is simple: what changed? Comparing two exports row by row in a spreadsheet is slow. This tool joins them by query or page and shows the totals and the biggest movers.
- Runs in your browser
- Nothing you paste is uploaded
- Free, no sign-up
- CheckTotals before and after
- CheckBiggest gains and losses
- CheckNew and lost queries or pages
- CheckPosition before and after
Free
no sign-up, no usage limit
0 uploads
what you paste stays on your device
4 checks
what the tool looks at
Offline
works once the page has loaded
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HOW IT WORKS
How to use the SEO Before/After Comparison
Two Search Console exports of the same kind and length.
Export the same report for equal periods before and after the change.
Paste both and choose queries or pages.
Read the losses first: they show what the change broke.
WHAT IT CHECKS
What it looks at, and how to read it.
Changes in clicks, impressions and position, with the biggest gains and losses.
What it checks
- Totals before and after
- Biggest gains and losses
- New and lost queries or pages
- Position before and after
How to read the results
- Compare equal periods, ideally the same days of the week.
- A drop across every row points to a site-wide cause; a few big losses point to specific pages.
GOOD TO KNOW
Common mistakes, an example and the limits.
Common mistakes
- Comparing a holiday month with a normal one.
- Judging a migration after one week.
A worked example
After a theme change, clicks fall 18%; the losses table shows category pages dropped while products held, which leads to the new theme’s missing category text.
Limitations
- Your export is read in your browser and never uploaded.
- Search Console exports show at most 1,000 rows per report and hide rare queries for privacy, so totals can be lower than in the Search Console interface.
- Shows what changed, not why: seasons, Google updates and other work all show up together.
FAQ
Questions about the SEO Before/After Comparison
Straight answers about what it does and where its limits are.
Can I compare pages and queries?
Compare like with like: two queries exports, or two pages exports.
Is my data uploaded?
No. Both exports are read in your browser.
Annotate changes and compare periods automatically.
Free tools check one thing at a time. The NdovuSEOLabs platform connects your own Search Console, analytics and server logs, and keeps checking every page.