What is UGC (user-generated content) in advertising?

Short answer. In advertising, UGC (user-generated content) is ad creative that looks like it was made by a real person rather than a brand, usually a creator or customer talking to camera. In our experience most UGC ads are briefed and paid for, so the term now describes a style and a format more than who made the video.

What UGC means, and how the meaning drifted

The dictionary meaning is about where content came from. Oxford Learner's Dictionaries defines user-generated as "relating to material on a website that has been contributed by the people who use the website."

In paid media the word has moved. Motion, a creative analytics company, defines a UGC ad as "Ads shot in a lo-fi, authentic style that looks like it came from a real person, not a brand. It typically features creators or customers speaking directly to the camera." That definition is about how the ad looks, not about who owns it. In our experience a UGC ad is usually a commissioned piece: a brief, a script or talking points, a creator who is paid, and an edit.

How UGC runs on the platforms

TikTok's own format for running creator posts as ads is Spark Ads, which its help center describes as "a native ad format that allows you to leverage organic TikTok posts and their features in your advertising." TikTok lists two uses: publishing ads from your own account's posts, and publishing "organic posts made by other creators (with their authorization)". The authorization step matters: running someone else's post as an ad is a permission question before it is a creative one.

A worked example (illustration)

These numbers are made up to show the arithmetic, not results. Brief four creators. Each records one body section and three different opening lines. In the edit that is 4 x 3 = 12 ads, and pairing each with two end screens makes 24 variants from four shoots. The volume comes from the edit, not from booking more creators.

What a good or bad reading tells you

UGC is a format, so judge it on the same outcomes as anything else: cost per install, cost per purchase, return on spend. A UGC ad that stops the scroll but does not convert usually means the opening promised something the product or the landing page did not deliver. A UGC ad that converts with a weak hook rate may simply need a new first three seconds.

In games and in consumer brands

Our read: in mobile games, UGC tends to work as a person reacting to the game with gameplay on screen, because the game is the proof. For consumer brands it carries trust: a person using the product, a before and after, an honest objection answered. In both, the person on screen is a cast role, and the brief should say which motivation they speak to.

Common mistakes

• Treating "make it feel organic" as a brief. As we argue in organic is not a brief, it means four different things.
• Testing one creator's single video and concluding that UGC does not work for you, instead of testing hooks and people as separate variables.
• Running a creator's post as an ad without the creator's authorization or agreed usage rights.
• Letting the look become the goal, so the ad feels real and says nothing.

Flixr's view

We make UGC and creator video ourselves, with 7,600+ creators ready to brief, and we use generative AI where it earns its place and cast actors where trust has to land. Our view is that UGC is a casting and editing discipline, not a vibe, which is why we usually cast actors rather than influencers. The full argument is in our UGC ads guide, and how we make it is on our UGC ads page.