Ad-Preflight
Audits HTML5 creatives locally to catch rejections before handoff and ad server submission
The product is a local auditing tool for HTML5 display creatives that checks for missing clickTags, file packaging errors, size budget violations, and runtime issues that cause ad server rejections. It is for designers, marketers, and developers in businesses that produce display ads and need to validate creatives before handoff. Unlike online validators that require uploads and check after handoff, it runs entirely on the user's machine via a CLI with CI/CD integration and an optional real-browser deep audit.
Key features
- HTML5 creative auditing
- clickTag and exit validation
- IAB standard size checks
- Google display budget validation
- File packaging and ZIP validation
- Auto-fix with backup
- Upload-ready ZIP generation
- Live browser preview
- CI/CD JSON and exit codes
- MCP server for AI agents
- Real-browser deep audit
- Heavy Ad Intervention checks
- JS runtime error diagnostics
- Network waterfall auditing
- Mixed content detection
- Per-size screenshot generation
- Blank render detection
- Border and overflow checks
- 30-second animation limit check
- No social media activity within the last 30 days
GTM channels
- Docs
ICP
- Marketing teams
- Design teams
- Software developers