Overall Browser Coverage: Deduplication Key Coverage

Overall Browser Coverage measures the percentage of browser pixel events that include a deduplication key, reflecting how well your setup prevents duplicate conversion reporting.

Formula

Overall Browser Coverage = Browser Events with Dedupe Key ÷ Total Browser Events × 100

Formula Components

Metric	Definition
Browser Events with Dedupe Key	Count of browser pixel events containing a deduplication identifier
Total Browser Events	Total count of browser pixel events sent to Meta

Metadata
Type	Percentage
Data Source	Meta Ads
Aggregation	Average

Example

Your store sends 12,450 browser events to Meta, with 11,580 including deduplication keys.

Metric	Value	Interpretation
Events with Dedupe Key	11,580	Browser events with event IDs
Total Browser Events	12,450	All browser pixel events
Overall Browser Coverage	93.0%	Strong deduplication coverage

How It Works

When both browser pixel and server Conversions API send the same conversion event, Meta uses deduplication keys to avoid double-counting. This metric shows the percentage of your browser events that include the required identifier (typically event_id) for accurate deduplication.

When to Use

Scenario	Action
Coverage below 90%	Check pixel configuration for missing event IDs
Seeing duplicate conversions	Verify browser events include matching dedupe keys
Setting up redundant tracking	Ensure browser and server events share identifiers
Auditing data quality	Compare with server coverage for full picture

Metric	Relationship
Browser Dedupe Coverage	Per-event breakdown of browser deduplication
Server Dedupe Coverage	Server-side deduplication key coverage

See all EMQ metrics →

Server Dedupe Coverage

⌘I

​Formula

​Formula Components

​Example

​How It Works

​When to Use

​Related Metrics

Formula

Formula Components

Example

How It Works

When to Use

Related Metrics