Free Google Review QR Code Generator
Before you print
How big should it be?
Rule of thumb: printed width ≥ scanning distance ÷ 10. Pick the surface above and the studio sizes the code for you, then checks the printed module size against what a press can actually hold.
Questions people actually ask
Use Google's Place ID Finder at developers.google.com/maps/documentation/places/web-service/place-id: search your business name and copy the ID that appears (it looks like ChIJN1t_tDeuEmsRUsoyG83frY4). It identifies your listing permanently, so you only look it up once.
Receipts, table tents, counter cards, and packaging work best: anywhere a happy customer is holding their phone anyway. Add a short prompt like 'Enjoyed it? Leave us a review' so people know what the scan does.
Their phone opens Google's review form for your business with the star picker ready, no searching, no navigating your Maps listing. Fewer steps means more completed reviews.
Your Place ID stays with your listing through name changes and most edits. If you move to an entirely new Google Business Profile, you get a new Place ID and would need to reprint the code.
Yes: free forever, no signup, no watermark. The code is generated in your browser and belongs to you; it works as long as Google's review link does.
Want the detail? How google review QR codes work The payload format, what scanners do with it, and where it breaks.