In a digital market that thrives on attention, your ad format is as important as the content it surrounds. For publishers, choosing the right Ad types is a strategic decision that directly impacts revenue, user experience, and the technical health of your site. In 2025, with the rise of mobile traffic and the demand for non-intrusive advertising, ad formats have evolved to become a key component of an intelligent monetization strategy.

This definitive guide is crafted for you, the publisher. We will demystify Grumft’s ad formats, explaining not only what they are but how our technology optimizes them for your site, ensuring maximum revenue without compromising your audience’s experience.

1. The Essentials of Ad Formats: What and Why to Use Them

Ad formats are the different shapes and sizes in which digital advertising is displayed. For publishers, the goal is to use a combination of formats that maximize revenue and viewability while offering a professional user experience.

Why Use Optimized Formats?

• Higher eCPM: Certain formats, like video and rich media, command higher CPMs because they offer greater visual impact and engagement for advertisers.
• Better Viewability: Formats that are optimized to adapt to a site’s layout ensure the ad is seen by the user, which is the most valued metric by advertisers.
• UX Compliance: Formats that are non-intrusive and load quickly are fundamental to keeping a user on your site, which positively impacts your ranking.

2. Grumft’s Ad types: A Journey from the Basics to the Innovative

Grumft offers a complete variety of ad formats, designed to integrate seamlessly with your site and maximize revenue without compromising user experience.

Standard and Responsive IAB Formats

These formats are the foundation of display advertising. They are universally recognized by advertisers and have the highest demand, ensuring consistent revenue.

• Medium Rectangle (300×250) and Large Rectangle (336×280): These are the most popular and versatile formats for both desktop and mobile. Grumft optimizes their placement so they integrate perfectly with your content, boosting the eCPM and click-through rate.
• Leaderboard (728×90) and Half Page (300×600): High-impact formats for desktop, ideal for the header and sidebar of your site. Grumft ensures these formats are lightweight and do not harm your site’s speed.
• Responsive Formats: Our technology ensures that ads automatically adapt to any screen size, from desktop to mobile, maximizing inventory fill rate and revenue across all devices.

Video and Rich Media Ad Formats

Video and rich media ads offer a more engaging experience and, consequently, a higher eCPM.

• Out-stream Video Ads: This video format is displayed in non-video spaces, such as between the paragraphs of your article. The ad only starts playing when it is visible on the screen, which guarantees viewability and value for the advertiser.
• Rich Media Ads: These are ads that allow user interaction with audio, video, or animations. Grumft optimizes these formats so they are lightweight and do not harm your site’s speed, which is crucial for UX.

Special and High-Impact Formats

These formats are designed for maximum viewability and engagement, but they must be used with a careful strategy.

• Sticky Top Tag and Sticky Bottom Tag (Sticky Ads): Ads that remain fixed at the top or bottom of the screen as the user scrolls. They have high viewability and are ideal for mobile, ensuring a high eCPM without being overly intrusive.
• Sticky Ad (320×100): An optimized version of a sticky banner for mobile, with dimensions that offer greater visual impact and fit perfectly on a smartphone screen.
• Up Image: A high-impact ad format that overlays images in your content. It leverages the user’s natural attention to visual content to deliver a more integrated ad experience.
• Interstitial Ads: Full-screen ads that appear during content transitions. They generate the highest eCPMs but must be used with moderation and in full compliance with Google’s policies.
• Rewarded Ads: The user watchezs an ad in exchange for a reward (e.g., access to premium content or a virtual item). High engagement and eCPMs, as the interaction is voluntary.
• Open App Ads: Full-screen ads that appear during the transition from one app to another, leveraging full-screen viewability and user engagement.
• GPush (Web Push Notifications with Ads): An innovative solution from Grumft that allows you to monetize your web push notification channel with ads. It’s a new revenue stream and an effective way to re-engage your audience.

Technologies that Optimize Our Ad Formats

Grumft goes beyond simply providing formats. We use technology and expertise to ensure they generate maximum revenue for you.

• Header Bidding: Our unified auction technology puts all your site’s ad formats into a simultaneous competition, which ensures the highest bid wins and boosts your eCPM.
• AI and Optimization: We use artificial intelligence to analyze the performance of each format in real-time and optimize the auction, ensuring the most profitable format is displayed at the right time.
• Core Web Vitals: Our experts ensure your ad formats are lightweight and asynchronous, which improves your ranking and user experience.

3. Frequently Asked Questions (FAQs) About Grumft Ad Formats

Conclusion

The choice of ad formats is a pillar of your monetization strategy. By using optimized formats that balance revenue with user experience, you ensure your audience stays engaged and your site becomes a sustainable and profitable source of revenue.

Ready to optimize your ad formats and boost your revenue? Grumft specializes in publisher revenue optimization. Our technology and expertise ensure you receive the highest value for every impression. Connect with our experts and let’s plan a strategy that takes your earnings to the next level.

Further Reading & Resources

• IAB Tech Lab: Ad Formats and Guidelines
• Google Ad Manager Help Center: About Ad Formats
• MonetizeMore Blog: Ad Formats Guide
• [Grumft]: How to Increase eCPM in 2025: The Definitive Guide with 25 Expert Strategies
• [Grumft]: Programmatic Media: The Definitive Guide for Publishers (2025)

Leia também:

LTV vs CAC: A Matemática da Sobrevivência Digital

Ad Mediation is Broken. The Unified Auction is How You Fix Your Revenue.

Análise do Ciclo de Vida do Assinante: Guia de Engajamento e Receita para Publishers