Dynamic Keyword Insertion Done Right

DKI is either +33% ROAS or a brand safety disaster. Depends entirely on your setup.

Dynamic Keyword Insertion automatically swaps your headline text with whatever the user searched. When it works, your ad matches their exact intent. Relevance goes up. Quality Score improves. CPC drops. ROAS climbs.

When it doesn't work, your headline displays raw search queries including typos, competitor names, and phrases that make your brand look like it was set up by someone who left early on a Friday.

We inherited an account last year where DKI was running across 40+ ad groups with zero fallbacks.

One headline literally read "cheap knockoff [brand name]" because that's what someone typed into Google and DKI faithfully inserted it. Another showed a competitor's name in the headline. A third had a typo so bad it looked like the brand was having a stroke.

(The client didn't know. They hadn't looked at ad previews in 6 months.)

Here's how to set it up so it actually helps:

1. Strategic fallbacks. Your fallback headline should be your best-performing static headline. When the query doesn't fit the character limit or sounds weird - that's what shows. Most people leave this blank. Don't.

2. Keyword list hygiene. DKI pulls from whatever keywords trigger your ads. If your keyword list includes broad match garbage, competitor terms, or long-tail phrases that don't make sense as headlines - DKI will use them. Clean the list first.

3. Character limits. Your fallback must fit the headline slot. If your default is 35 characters and your fallback is 42, it breaks. Test every fallback in ad preview.

4. Negative keyword alignment. Block queries you don't want inserted into headlines. Competitor names, profanity, terms that imply low quality. DKI doesn't filter. You have to.

We fixed this account in 20 minutes. Set fallbacks, cleaned keywords, added negatives. ROAS jumped 33% in the first month.

Same budget. Same campaigns. Same landing pages.

DKI isn't broken. The setup is.