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YouTube bumper ad specs
A bumper is the one YouTube ad format with a duration Google states as a flat number. Drop a clip to see whether it clears six seconds, and what else the format asks for.
Every figure checked against the platform’s own documentation on 2026-08-08, with the source beside it.
Drop a clip to see it in every placement
Video or still. It stays in your browser — nothing is uploaded.
Every check below runs against these numbers.
Your clip as a bumper
YouTube bumper
FitsBumper ads
- Aspect ratio — 16:9 — accepted
- Resolution — 1920×1080 clears the 1280×720 minimum
- Duration — 6 s is within 6 s
- File size — 4 MB against a 256 GB cap
What YouTube bumper publishes
- Recommended resolution
- 1920 × 1080
- Aspect ratio
- 16:9
- Duration
- Up to 6 s
- Maximum file size
- 256 GB
- File types
- .mp4, .mov, .avi, .wmv, .webm, .mpeg, .3gpp
Google Ads Help — Video ad formats · checked 2026-08-08
Six seconds is a cap, not a target
Every other YouTube duration is a range or a recommendation. Skippable in-stream has no published ceiling at all, Shorts recommends under sixty seconds without enforcing it, and non-skippable in-stream runs fifteen to sixty depending on campaign subtype. The bumper is the only one Google writes as a single number.
That makes it the one YouTube duration worth checking before you upload rather than after. A six-second cut passes; anything past it is the format telling you no, not advising you against it.
A bumper is not a shortened in-stream ad
A bumper cannot be skipped, so all six seconds play. There is no skip button at five seconds to write around, which is what a skippable in-stream ad is structured for — the front-loaded hook exists because the viewer is about to be given a way out.
The nearest format by length is non-skippable in-stream, and it starts at fifteen seconds. There is nothing between the two: a nine-second cut is not a valid version of either.
The frame is 16:9, and 720p still passes
Google recommends 1920×1080 and accepts down to 1280×720. A 720p export is a valid bumper, which is worth knowing before re-rendering an archive clip that never existed at 1080.
File size is capped at 256 GB — effectively no cap for a six-second video, and the reason file size is never the thing that rejects a bumper.
There is no bumper-specific safe zone
Google publishes a safe zone for Shorts, and a wider one for an ad that may serve anywhere on YouTube: 15% top, 35% bottom, 17.8% right, 4.4% left. It publishes nothing for bumpers as such, so the all-placements zone is the one to design against.
With six seconds and no skip, a bumper usually carries one line of text for its whole length — which makes the margin it sits inside the difference between a legible ad and a covered one.
No safe zone is published for this placement, so no margins are drawn over the frame above. The safe-zone reference covers the placements that have one.
Shorts, skippable and non-skippable in-stream are covered in the full YouTube ad specs.
FAQs
Frequently Asked Questions
What are the YouTube bumper ad specs?
Six seconds maximum, 16:9, with 1920×1080 recommended and 1280×720 the accepted minimum. Files go up to 256 GB in .mp4, .mov, .avi, .wmv, .webm, .mpeg or .3gpp. The six-second cap is the only figure of those that Google states as a hard limit rather than a recommendation.
How long can a YouTube bumper ad be?
Six seconds. Google publishes it as a maximum, so a shorter bumper is valid and a longer one is not accepted as a bumper at all — the next format up, non-skippable in-stream, starts at fifteen seconds.
What size should a YouTube bumper ad be?
1920×1080 is what Google recommends, at 16:9. The accepted minimum is 1280×720, so a 720p export is valid even though 1080p is the norm.
Can you skip a YouTube bumper ad?
No. Bumpers are non-skippable, which is why the format is capped at six seconds — the whole ad plays, so the length is the limit rather than the viewer’s patience.
Is a bumper ad the same as a non-skippable in-stream ad?
Both are non-skippable, but the durations do not overlap. A bumper is six seconds or less; non-skippable in-stream runs fifteen to sixty seconds depending on campaign subtype. Nothing valid sits between them.
What file format does a YouTube bumper ad need?
Nothing specific to bumpers — Google names MPG as recommended and MP4 is the practical choice, with .MOV, .AVI, .WMV, .FLV, .WebM, MPEG, 3GPP, ProRes, DNxHR, CineForm and HEVC also accepted. The cap is 256 GB, which six seconds of video will never approach.
