Free Google Ads script · Keywords

Keyword isolation

Create exact-match negatives that reduce overlap between Search campaigns and ad groups, with a manifest and dry-run safeguards.

ModeDry run by default; can add and remove managed negatives

Suggested frequencyAfter structural changes, then weekly

What it is for

A faster check.
Not automatic judgement.

Keyword overlap can make closely related campaigns and ad groups compete for the same query. This script builds exact-match isolation negatives, records what it created in a manifest and can safely remove only its own obsolete entries on later runs.

What the script does

Builds campaign-level and ad-group-level exact negatives
Skips a negative when the target already contains the positive keyword
Tracks script-managed negatives in a Google Sheet manifest
Starts in dry-run mode and limits changes per run

Before the first run

01Keep DRY_RUN enabled for the first run
02Choose campaign and status filters
03Review the proposed additions and safety skips
04Use a dedicated manifest Sheet before live sync

Important

Isolation is not appropriate for every account structure. Review close variants, match behaviour and intentional overlap before switching off dry run.

Use this script at your own risk. Google Ads interfaces and reporting fields change. Always run Preview in the intended account and read the logs before enabling or scheduling it.

Copyable source