Google Ads Image Sizes: A White-Label Guide

Google Ads display campaigns run on a defined set of image sizes, and the highest performers are 300×250, 336×280, 728×90, 300×600, and 320×100, plus a small kit of responsive assets Google resizes on its own. If you run paid media for other people's brands, though, the winning size isn't the real question. The real question is how you produce every size, for every client, on brand, fast enough that your design queue never caps how many accounts you can take on.

This guide covers the specs your clients' campaigns actually need, then the part generic size charts skip: how a delivery team builds, packages, and QAs display creative at agency scale.

What image sizes does Google Ads need?

Google Ads display creative falls into two buckets: fixed-size uploaded banners and responsive display assets. For uploaded ads, these are the sizes that carry the most inventory and are worth producing for nearly every client:

Size (px)	Common name	Where it runs
300×250	Medium rectangle	Desktop and mobile — the workhorse
336×280	Large rectangle	In-content, desktop
728×90	Leaderboard	Top/bottom of desktop pages
300×600	Half page (large skyscraper)	High-impact desktop sidebar
160×600	Wide skyscraper	Desktop sidebar
320×100	Large mobile banner	Above-the-fold mobile
320×50	Mobile banner	Standard mobile
250×250 / 200×200	Square / small square	Flexible fill
970×250	Billboard	Premium desktop placement

A few technical constraints matter for every one of them: uploaded display images cap at 150KB, accepted formats are JPG, PNG, and GIF, and the creative has to render cleanly without being cropped or letterboxed. Note that the leaderboard is 728×90 — a spec worth double-checking against out-of-date charts that still list it as 780×90.

How do responsive display ads change the workload?

Responsive display ads (RDAs) let Google auto-generate size variations from a handful of assets, which is the single biggest lever an agency has for cutting production time. Instead of hand-cutting a dozen fixed banners per concept, you supply a small asset set and Google fits it to available inventory:

Asset	Ratio	Recommended size
Landscape image	1.91:1	1200×628
Square image	1:1	1200×1200
Portrait image	4:5	960×1200
Logo (square)	1:1	1200×1200
Logo (landscape)	4:1	1200×300

For a delivery team, RDAs are the default starting point: they get a client live across the most inventory with the least design labor, and they leave your team to hand-build fixed sizes only for the placements or brands where pixel control genuinely matters. The trade-off is less control over exactly how each combination renders, so the QA step below still applies. Previewing combinations before launch — whether in Google's own tools or a mockup workflow — is worth building into your process so a client never sees a broken crop first.

Why sizing is a delivery problem, not a design detail

For an agency, image sizing is a capacity question before it's a creative one. A single display concept done properly means producing the core fixed sizes plus the RDA asset kit — call it six to eight deliverables per concept. Multiply that by the number of concepts you test, then by every client on your roster, and creative production quickly becomes the constraint that decides how many PPC accounts you can actually service. It sits alongside the core principles of running Google Ads that clients assume are handled — the difference is that sizing scales with headcount unless you systematize it.

That math is why the sizing decision cascades into everything downstream. Standardize on a tight, high-inventory size list and a repeatable RDA kit, and one designer can keep many accounts fed. Let each account manager improvise a bespoke size list per client and your throughput collapses. In our delivery, we treat the size set as a fixed template — the same core banners and RDA assets every account gets — so producing creative for a new client is assembly, not invention.

The market context makes this sharper. According to a Search Engine Land survey published in March 2026, 73% of in-house marketing teams now keep PPC management fully in-house, up from 44% just two years earlier. The clients who still outsource expect agency-grade speed and polish in return — and for agencies that sell PPC without a paid-media or design bench, white-label PPC delivery is how you offer the service without hiring the team to build the banners.

Packaging display creative production for clients

Sizing decisions map directly onto how you scope and price paid-media work, so build the size template into your engagement model rather than treating creative as an open-ended extra. A few ways delivery teams structure it:

• Per-task resizing. A client or their in-house designer supplies a master concept and you adapt it to the full Google size set. Clean, bounded, easy to quote — good for agencies whose clients already have brand creative.
• White-label retainer. Your brand covers concepting, the full size kit, RDA assets, and ongoing refreshes as part of managed PPC. The client sees one partner; the resizing labor is invisible to them.
• Reserved capacity. For clients running many campaigns or frequent seasonal pushes, hold standing design and media hours so new creative never waits in a queue.

The point is to decide up front how many sizes and concept refreshes a package includes. Creative that sprawls without a defined size list is where paid-media retainers quietly lose margin.

Responsive formats also earn their place in the packaging conversation because richer creative can outperform static banners on the same spend — a reminder that the size kit is a floor, and testing format alongside dimensions is where the performance upside sits.

An agency QA checklist for display creative

Before any client campaign goes live, run every size through a short, standard check so sizing errors don't reach the account. A repeatable checklist is what keeps quality flat as volume grows:

• Every core size present — the fixed banners and the full RDA asset kit, no gaps.
• Under 150KB each, in an accepted format (JPG, PNG, GIF).
• Legible at the smallest size — the 320×50 mobile banner is where copy and logos break first.
• Safe cropping in RDAs — check how Google fits your landscape, square, and portrait assets; keep key elements away from the edges.
• On-brand — fonts, colors, and logo lockups match the client's guidelines, not your house defaults.
• Clear CTA in every size, not just the roomy ones.

Reporting creative performance back to clients

Tie display creative results to outcomes the client cares about, or the size work reads as busywork instead of performance marketing. That means connecting ad clicks to pipeline and deals, not stopping at impressions and CTR. Where a client runs on HubSpot, we build campaign reporting that carries Google Ads conversion quality through to the CRM, so the story a client sees is closed-loop — which creative and which placements produced real conversions, not just cheap clicks. Success on that front depends on a clear set of KPIs agreed up front and a named contact on the client's sales side to validate lead quality; without both, even flawless creative reporting stays one-sided.

That closed-loop view is also what justifies the production discipline. When you can show which sized formats and concepts drove qualified pipeline, the size template stops being a cost center and becomes evidence of the delivery system clients are paying for.

The takeaway for agencies

Get the Google Ads image sizes right — the core fixed banners, a lean RDA kit, under 150KB, on brand — and you've solved the creative-spec problem. The bigger win is treating that size set as a fixed, repeatable template so producing display creative for one more client is assembly-line work, not a bespoke project every time. That's what lets you scale paid media across a roster without your design queue setting the ceiling. If building or staffing that production line is the bottleneck, white-label PPC management runs it under your brand so you can keep selling the service and keep the wins yours.