IAS Media Quality Report 2026: MFA and Viewability Data

The IAS Media Quality Report 2026 — the 21st edition of the industry's longest-running ad-quality benchmark — landed on July 9, 2026 with one statistic built to stop media buyers cold: mobile web display inventory carries a made-for-advertising (MFA) rate four times higher than desktop, 2.0% versus 0.5%. That multiple matters because mobile web is not a fringe channel — it accounts for 45.1% of all open-web impressions IAS measured, which means the single largest slice of programmatic supply is also its dirtiest.

The stakes are bigger than a hygiene metric. IAS estimates that MFA inventory wastes on the order of $10 billion in advertiser spend annually — a vendor-modeled figure, but directionally consistent with what independent MFA studies have found since 2023. And the report's viewability data hands planners a second structural argument: video reached 79.7% global viewability in 2025 against 67.9% for display, an 11.8-percentage-point gap that IAS says keeps widening.

This guide covers what the 21st MQR actually measured, the MFA and viewability benchmarks by device, region, and vertical, the CTV invalid-traffic gap, and — the part no other coverage has attempted — a programmatic inclusion-list decision matrix that translates the benchmarks into concrete buy-side actions.

IAS published the 21st edition of its flagship Media Quality Report on July 9, 2026. The dataset behind it is enormous — the company describes it as more than 300 billion daily digital interactions measured across the open internet, positioned as the industry's most comprehensive open-web benchmark set. The benchmarks reflect 2025 measurement data, and this edition adds monthly-trend granularity for the first time, which is what makes the ad-clutter and brand-safety trajectories in this report newly legible.

One disclosure worth making once, up front: all of this is IAS's own proprietary measurement. No independent audit of the underlying dataset exists, which is standard practice for ad-tech state-of-the-industry reports — the same caveat applies to DoubleVerify's competing media-quality data, which frames the same MFA problem from a rival measurement stack. Treat the figures as a vendor-measured census of the inventory IAS sees, not neutral arbitration.

The release also carries an organizational subtext. Lidiane Jones — the former Bumble and Slack chief executive — was appointed IAS CEO on July 7, 2026, two days before the report shipped. The 21st MQR is her first major public data moment in the role, and the framing she chose is telling: optimization as a performance engine, not verification as an insurance policy.

The report's lead finding is the device split on made-for-advertising inventory. During 2025, 2.0% of mobile web display impressions were classified as MFA, against 0.5% on desktop browsers — a 4x relative-rate multiple. Be precise about the unit: this is a multiple of rates, not a four-percentage-point difference. The absolute rates are small; the concentration is what should worry you.

Because mobile web display accounts for 45.1% of all open-web impressions IAS measured, that elevated rate compounds into a disproportionate share of everything that goes wrong in a programmatic buy. Mobile web generated 71.9% of all MFA impressions, 54.9% of brand-suitability failures, and 71.5% of global ad-clutter impressions. IAS's own summary rounds the pattern to a sentence: mobile web display accounts for 45% of impressions and 72% of MFA and 55% of brand suitability failures.

The regional cut adds one more layer. North America's MFA rate came in at 1.50%, APAC at 0.7%, and the Rest of World grouping highest among named regions at 2.3%. If your programmatic footprint extends beyond North America and Western Europe, your blended MFA exposure is likely higher than the global averages suggest — worth checking against the broader programmatic spend and waste picture when you model what that exposure costs.

On the cost of all this: IAS puts estimated annual advertiser waste tied to MFA inventory at around $10 billion. That is the vendor's own modeled estimate rather than an independently audited industry figure, so treat it as an order-of-magnitude signal — but even heavy discounting leaves a number large enough to justify page-level filtering on every open-web line item.

Global video viewability reached 79.7% in 2025; global display viewability came in at 67.9%. That is an 11.8-percentage-point advantage for video — and note the unit again: percentage points, not percent. IAS frames the gap as widening as attention becomes a defining currency of performance, which is the report's clearest structural argument for format mix rather than placement hygiene alone.

The device breakdown within display repeats the mobile-web pattern from the MFA data. Desktop browser display posted 71.6% viewability; mobile web display posted 64.5% — the weakest segment in the device split, a 7.1-point deficit against desktop. The same environment that carries the most MFA also delivers the fewest viewable impressions per dollar.

Geography moves the video numbers meaningfully. Poland led the named markets at 84.37% video viewability with Australia close behind at 84.05%, while Japan sat at 63.21% — the low end of the named top-10 set, more than 21 points below the leaders. Regionally, Rest of World posted 81.9%, EMEA 80.6%, APAC 80.2%, and North America 79.3%. If you plan international video against a single global benchmark, you are mispricing several markets at once — the same discipline we recommend when reading video ad benchmarks across CPV, CPM, and CTR, where country-level spreads routinely swamp the global average.

The global invalid-traffic rate held at 1.1% across 2025, which IAS describes as stable, with campaigns running optimization and anti-fraud tooling averaging roughly 1%. North America was the highest-IVT region at 1.36%, and the United States the highest top market at 1.40%. Read in isolation, that looks like a solved problem.

It isn't — the blended average hides the report's most dramatic split. Non-optimized CTV campaigns ran 9.1% invalid traffic; optimized CTV campaigns ran 0.1% — a roughly 91x gap between the two buying postures on the same channel. IAS attributes the clean end partly to its optimization infrastructure, including the Total TV show-level CTV transparency product it launched in April 2026. Whatever the tooling, the structural lesson stands: CTV is not a safe channel or a risky channel — it is both, depending entirely on whether verification sits in the buying path.

The prior edition supplies the trend line, with the usual cross-edition caution. The 20th MQR — published in 2025 on 2024 data — reported that fraud in non-optimized campaigns rose 19.0% year over year to a four-year high of 10.9%, running 15x higher than optimized campaigns. The metric slices differ between editions, but the direction is consistent across both: unprotected buying keeps getting more expensive while protected buying stays clean.

One genuinely encouraging monthly trend: brand-safety failure rates fell from 3.7x baseline in January 2025 to 1.0x baseline by December, and brand-suitability failures fell from 1.3x to 1.0x over the same window. Suitability risk still varies sharply by geography — EMEA ran highest regionally at 1.5x the North American baseline, with Spain at 2.5x the US baseline, Italy at 2.1x, and Canada lowest at 0.6x. The improvement is real; the variance is why blanket global suitability settings remain a blunt instrument.

The vertical breakdown is the most underused data in the report — most coverage leads with the mobile/desktop split and stops. The spread between the strongest and weakest measured verticals is wide enough to change how aggressively a media buyer should filter, which is exactly how we use it in the decision matrix in the next section.

The report also carries sustainability-linked quality data from IAS's partnership with Good-Loop, which should be read with a vendor-partner label attached: green-certified campaigns in EMEA posted quality-impression rates 3.9 percentage points higher than non-measured campaigns (75.1% versus 71.2%), the Travel and Entertainment vertical saw an 8.7-point quality lift from measured campaigns, and Good-Loop-measured impressions grew 37% between January and March 2026. Directionally interesting — especially the finding that the weakest vertical gains the most from measurement — but partner-reported, not independently verified.

Every piece of coverage of this report — including IAS's own summary — stops at the statistics. None of it tells a media buyer what to actually change in a deal ID, a PMP, or a DSP inclusion list. The matrix below maps the 21st MQR's benchmarks onto concrete buy-side actions. The benchmark columns are IAS's numbers; the recommended action column is our synthesis, the kind of decision framework we build inside paid media engagements — calibrate it to your own vertical's risk tolerance.

Three demands to put to your SSPs and curation partners when you operationalize this: page-level (not domain-level) MFA classification on mobile web, show-level transparency on every CTV path, and country-level viewability floors on video. All three are available in the market today; the report's data is the leverage to insist on them.

Step back from the individual benchmarks and one interpretive thread runs through the whole report. Every 2025 trend line that improved — brand-safety failures falling from 3.7x to 1.0x baseline, optimized CTV at 0.1% IVT — improved where verification tooling sat in the buying path, and every trend that worsened — ad clutter climbing from 0.3% to 0.8%, MFA concentrating on mobile web — worsened in the unmanaged open exchange. That is not a coincidence; it is the market splitting into a protected tier and an unprotected tier, with the price of the unprotected tier rising invisibly. As ppc.land's analysis put it, mobile web display is too large to abandon and too uneven to buy without page-level scrutiny — which is why the answer is precision, not avoidance.

Looking forward, we expect the 22nd edition to read worse before it reads better. AI-generated content has collapsed the cost of spinning up MFA sites, so the supply of low-quality inventory is likely to grow faster than classification catches it — the same AI-accelerated-content pressure Jones named in the launch release. The rational response for 2026-2027 planning is to move quality enforcement earlier: pre-bid filtering over post-bid reporting, inclusion lists over exclusion lists as the default posture on mobile web, and attention or outcome metrics layered on top of viewability, which is increasingly a floor rather than a goal. Viewability data should also feed your measurement stack — attribution models need to account for viewability quality, not just clicks, or the dirtiest inventory quietly claims credit it never earned.

The report's case studies point the same direction, with the standard caveat that they are single-advertiser, vendor-published results — not general benchmarks. A Kimberly-Clark campaign measured with NCSolutions reported a 36% average attention-score rise, with sales lift 313% higher for above-average-attention creative and ROAS 78% better than display-only; Danone's Activia reported a 56% attention-score increase; Stellantis reported a 165% engagement increase across 13 billion impressions in 19 countries. Directionally, they support the thesis that verified attention correlates with outcomes — proving that on your own spend is the kind of work we do in analytics engagements. IAS's companion Industry Pulse survey — vendor-commissioned, worth noting — found 88% of media and marketing experts ranking digital video and 84% ranking social media as top investment priorities, so the budget pressure toward the higher-viewability formats is already consensus.