Data & calculations
Compare advertising CSV reports
Turn two reporting periods into one comparison table. Review metric changes, add your interpretation and share the result with your team or client.
First period
Second period
Files and text are processed on your device and are not sent to the blog server. Individual tool settings are saved only in this browser.
How to use it
- Upload two reports using the same currency and attribution rules.
- Map columns in each file. Remove total rows before uploading to avoid double counting.
- Label the periods, add your own commentary and export the result.
The tool compares row totals. Period length, time zones and attribution affect interpretation. It does not invent reasons for performance changes.
Questions and answers
Which metrics can I compare?
Spend, clicks, conversions, CPC and CPA. Map impressions in both files for CTR, and revenue for ROAS. Results show each value, the absolute difference and percentage change.
Why remove total rows and check attribution?
The tool sums file rows. A total row would double-count values, while different currencies or attribution windows make comparison misleading. Prepare comparable periods before uploading.
How do I save a client report?
Label the periods, set a title and add commentary. Export CSV or use Print / save PDF and choose PDF in your browser. Your own commentary explains the changes.