YouTube Bumper Ads: How 6-Second Non-Skippable Ads Work

YouTube bumper ads are non-skippable video ads of up to 6 seconds (Google's format table sets a 5-second minimum) that play before, during or after other videos on YouTube and on Google video partner sites and apps. You buy them with Target CPM bidding, which means you pay per thousand impressions, not per view, so they are a reach and frequency tool rather than a click or conversion tool.

That short definition hides most of the decisions that matter: which campaign subtype to put bumpers in, how to bid, how often one person should see them, and how to tell whether a six-second ad did anything. This guide walks through each one using the mechanics Google documents in the Google Ads Help Center, and flags the places where the documentation is silent so you do not plan around assumptions.

What is a YouTube bumper ad?

A bumper is the shortest in-stream video format Google Ads sells. Google's own description is a non-skippable video ad lasting between 5 and 6 seconds. The viewer has no skip button, so the whole message plays every time the ad serves. That is the defining trade: you get a guaranteed full play of a very short message, and in exchange you give up length.

Bumpers appear in the same slots as other in-stream ads. They can run on YouTube videos and across websites and apps in the Google video partners network. In the campaign setup screens, Google groups them with skippable ads under "in-stream ads (bumper, skippable)", alongside in-feed and Shorts formats that some reach subtypes also use.

Bumper vs skippable in-stream vs non-skippable in-stream

The three in-stream formats differ on length, whether the viewer can skip, and how you are charged. These are the documented rules:

Read the table as a decision aid. If you need people to hear one specific line, such as a product name and a price, a bumper guarantees it plays. If you need 20 seconds to explain an offer, a bumper cannot hold it and a skippable ad is the better carrier, with the risk that viewers skip once the skip button appears after five seconds. A non-skippable in-stream ad sits between them: a longer guaranteed message, but a longer interruption for the viewer.

How are YouTube bumper ads bought and billed?

Bumper ads use Target CPM bidding. You set the average amount you are willing to pay per thousand impressions, and Google charges based on impressions served. Google lists no cost-per-view option for bumpers.

Two practical consequences follow. First, compare bumper costs with other reach buys on a CPM basis, not on a CPV basis. A skippable campaign reporting a cost per view is not directly comparable to a bumper campaign reporting a CPM. Second, the bid level affects which formats can serve. Google's reach campaign instructions warn that a bid that is too low may result in your ads not serving in all selected formats. If you combine bumpers with other formats in one campaign and see impressions only from some of them, check the bid before rebuilding the creative.

Illustrative example (made-up numbers for arithmetic only): if a campaign spends 30,000 baht at an average CPM of 60 baht, it buys 500,000 impressions. If reporting shows an average frequency of 2.5 impressions per user, that is about 200,000 unique users reached. The math is simple, which is part of the appeal: in a CPM buy, your levers are price per thousand impressions and how those impressions are spread across people.

Which campaign types and goals allow bumper ads?

Bumpers live inside Video campaigns. The Google Ads Help Center documents them in these setups:

• Video reach campaign, Efficient reach subtype. Built under the "YouTube reach, views, and engagements" objective. Google describes this subtype as using bumpers (along with skippable in-stream, in-feed and Shorts ads) to reach more unique users at a lower cost. You set a Target CPM bid.
• Video reach campaign, Non-skippable reach subtype. Uses Auction buying and the Reach goal. It delivers your entire message with bumpers and non-skippable in-stream ads, again on Target CPM.
• Target frequency subtype. Uses Auction buying and the Reach goal and lets you aim for a number of impressions per person. For skippable in-stream and bumper ads, the supported targets are 2 to 4 per week or 4 to 8 per month.
• Video ad sequence campaigns. Sequencing supports bumper ads, skippable in-stream ads, non-skippable in-stream ads, or a combination of them, with Target CPM bidding.

Menu labels in Google Ads change over time, and the exact path you see may differ slightly from the help pages. The principle holds: bumpers are a reach and awareness format, so you find them under reach-oriented goals and subtypes, not in conversion-focused setups.

Choosing between the subtypes

Pick Efficient reach when the goal is the largest number of unique people for the budget and you are comfortable letting Google mix formats. Pick Non-skippable reach when every impression must carry the full message, for example a launch date or a legal line that must be seen. Pick Target frequency when you care about how many times each person sees you in a week, such as a short promotion where one exposure is unlikely to be enough. Pick a sequence when the order of messages matters more than raw reach.

How to write a bumper ad that works in 6 seconds

Google sets the length limit; the rest is craft. Six seconds is roughly one sentence of voiceover and two or three shots, so the brief must be ruthless. These guidelines follow from the format itself:

1. One idea per bumper. A product, a benefit, a date. If you have three messages, make three bumpers and rotate them or put them in a sequence.
2. Brand in the first two seconds. There is no skip button, but people still look away. Put the logo or product on screen early and keep it there.
3. Design for sound off and sound on. Use on-screen text for the main line, and keep the voiceover saying the same thing, so the ad works either way.
4. Cut from a longer edit, then re-edit. Trimming the first six seconds of a 30-second spot usually gives you a setup with no payoff. Build the bumper edit around the payoff shot instead.
5. Keep it legible on a phone. Large type, high contrast, and few words. A line that reads well on a desktop monitor can be unreadable on a small screen.

The video itself is hosted on YouTube and added to the ad by its URL, so upload the six-second cut to your channel before you build the campaign.

Frequency and ad sequencing for bumper ads

Frequency caps

In Video campaigns, frequency caps are set at campaign level only. For an existing campaign, open the campaign's Settings, expand Additional settings and choose Frequency capping. You can cap impressions, views, or both, with a whole number per day, week or month. Google notes the cap applies to in-stream and bumper ads in the auction, and if the same video runs in other Video campaigns, those impressions and views also count toward this campaign's cap.

Caps are counted by cookie, not by person, according to Google's frequency distribution documentation. Someone who watches on a phone and a laptop can be counted as two users, so treat a cap as a ceiling per browser or device rather than a hard per-human limit.

Ad sequencing

A video ad sequence campaign shows people a series of videos in the order you define. Each step is an ad group, and a person moves to the next step only when the previous step's condition is met: an impression, a view or a skip, depending on what you set. Because bumpers are billed on impressions, an impression is the natural condition for a bumper step.

Google offers four templates during setup only: Introduce and reinforce, Prompt and inspire, Attract and direct, and Engage and differentiate. Bumpers can fit the short "prompt" or "reinforce" steps around a longer story. The sequence itself has a frequency cap that defaults to one sequence per person per 7 days and can be changed to 30 days. Sequence campaigns run on YouTube only, cannot target keywords, placements or topics, and Google does not provide traffic estimates for them, so plan budgets without a forecast.

Illustrative sequence (example structure, not a benchmark): step 1 is a 30-second skippable story about a new menu, step 2 is a bumper with the dish and the price, step 3 is a bumper with the delivery app and the promotion end date. Each bumper step advances on impression, so a person who saw step 2 moves to step 3 on their next eligible ad slot.

How to measure YouTube bumper ads

Because bumpers are bought on impressions to build reach, measure them on reach, frequency and brand outcomes rather than on clicks or last-click conversions.

• Impressions and CPM. The base cost metric for any bumper buy.
• Unique users and average frequency. Go to Campaigns, open Assets, then Videos, click the Columns icon, open Reach and frequency metrics and add Frequency distribution. Google splits people into 1+, 2+, 3+, 4+, 5+ and 10+ buckets, and the 1+ bucket shows total unique users for the date range. The report covers date ranges of 31 days or less.
• Sequence path. In sequence campaigns, the Sequence path column shows each step's required interaction and ad, and metrics are available per step.
• Brand Lift. Brand Lift studies measure effects on metrics such as ad recall, awareness, consideration and brand association, rather than clicks or views. Google states that Brand Lift is not available for all Google Ads accounts and that you need to contact your Google account representative to use it. It also has a minimum spend that the campaign should meet within the first 10 days for the study to have the best chance of completing. Google does not publish a single spend figure on that page, so ask for the threshold that applies to your market before you plan a study.

The honest limit: a bumper campaign that reports a low CPM and high reach has done its job as a media buy, but that alone does not prove anyone remembers the brand. Without Brand Lift or another controlled measure, look for indirect signals such as branded search volume and direct site traffic over the flight period, and treat them as directional because many other factors move them.

Common mistakes with bumper ads

• Judging bumpers on clicks. The format is bought per impression for reach. Optimizing it toward click-through rate pushes you to the wrong placements and creative.
• Trimming a long ad instead of editing a bumper. The first six seconds of a long spot rarely contain the brand and the message together.
• No frequency control. Without a cap or a Target frequency setup, a small audience can see the same six seconds many times. Set a cap at campaign level and check the frequency distribution after the first week.
• Bidding too low in a mixed-format campaign. Google warns that low bids can stop some selected formats from serving.
• Running one bumper for months. A six-second ad wears out quickly with a repeated audience. Plan several variants from the start.

YouTube bumper ads in the Thai market

For Thai campaigns, the main local decision is language and on-screen text. Thai script stacks vowels and tone marks above and below the line, so on-screen Thai text needs a font size large enough that those marks stay readable on a phone, and a six-second line in Thai should carry one short phrase rather than a full sentence. If you target both Thai and English speakers, build separate bumpers per language rather than one ad with two languages crammed into six seconds.

Bumpers also suit Thai brands that already run longer YouTube creative, because a sequence can follow a long story ad with short bumper reminders in Thai, such as a price, a promotion code or a store name. Promotions tied to local shopping dates benefit from Target frequency or a weekly cap so the reminder lands a few times in the days before the date, without flooding the same viewers. Placement control is worth reviewing too: bumpers can run on Google video partner sites and apps as well as YouTube, so check where impressions are serving once the campaign has data.

Bumper ads FAQ

How long can a YouTube bumper ad be?

A YouTube bumper ad can be up to 6 seconds long, with a 5-second minimum listed in Google's format table. Longer videos need a different format, such as non-skippable in-stream (60 seconds or shorter) or skippable in-stream.

Can viewers skip bumper ads?

No, viewers cannot skip bumper ads. Google classes them as non-skippable, so the full six seconds play whenever the ad serves.

How are bumper ads charged?

Bumper ads are charged per impression through Target CPM bidding. There is no cost-per-view billing for bumpers, so compare them with other reach buys on CPM.

Can I use bumper ads in an ad sequence?

Yes, video ad sequence campaigns support bumper ads, skippable in-stream ads, non-skippable in-stream ads, or a combination. Each step advances on an impression, view or skip, and the sequence defaults to one run per person per 7 days.

Do bumper ads work for conversions?

Bumper ads are designed for reach and awareness, not direct conversions. They are bought per impression in reach-focused campaign subtypes, so judge them on reach, frequency and brand measures such as Brand Lift where available.

Getting bumper ads into your media plan

Bumpers work best as one part of a video plan: a longer story ad to explain, and short bumpers to repeat the brand and the offer at a controlled frequency. If you want help setting up reach and sequence campaigns, the YouTube Ads service from Relevant Audience is the place to start. For Thai-language video inventory beyond YouTube, see the Thai video network. Bumpers often sit alongside search activity in the same account, which the Google Ads management team can coordinate, and if you need short-form edits produced for the format, see the AI video service page for production options.