All Ad Specs

You can access a comprehensive, free directory containing hundreds of digital ad specifications across dozens of major publishers. This tool helps you find up-to-date publisher technical requirements in one place, making it easier to prepare creative assets for your digital marketing campaigns. Core Features Unified Ad Specs Directory Browse ad specifications from multiple publishers in one centralized platform instead of searching separate help centers. Accurate Dimensions & Ratios Quickly access: * Pixel dimensions * Aspect ratios * Orientation requirements * Resolution guidance File & Format Validation See: * Maximum file sizes * Accepted image formats * Supported video codecs * Audio requirements Safe Zones & Creative Guidance View safe zones and placement guidance to reduce rejected ads and cropped creatives. Copy Limits Find character limits for: * Headlines * Primary text * Descriptions * CTAs Cross-Platform Comparison Compare formats across publishers side-by-side to streamline campaign planning. Searchable & Filterable Search by: * Publisher * Ad format * Placement * Dimension * Media type Continuously Updated Specifications are aligned with official publisher documentation and reviewed when platforms update their requirements. Free Access No login or subscription required.