What are the Lenses?
Lenses are a new way to navigate Oncrawl analyses. They group related insights into predefined entry points based on common SEO use cases.
Instead of switching between menus, reports, or configurations, you can start directly with the analysis you need.
The four lenses available are:
Crawl Discovery: Jump-start your SEO analysis with clear, easy to understand reports that track site health.
Content: Run an audit to identify duplicate and thin content issues.
Sanity Check: Run quick checks on key pages to catch and fix critical technical issues before they escalate.
Performance: Track Core Web Vitals and page load times to spot performance issues.
Focus on the project page
The project page is the hub for lenses.
When you open a project, you'll see entry points for each available lens. From here you can:
Create a crawl configuration
Choose a custom strategy or pick a lens
Launch a crawl with the lens and its built-in dashboards
Focus on each lens
1. Crawl Discovery
The Crawl Discovery lens gives you an overview of crawls in your project. It helps you quickly find the right crawl for deeper analysis.
How to use it:
Go to your Project page.
Clic on “Create configuration”
Click on "Discovery"
Click on: "Use this crawl configuration"
Click on: "Create & launch crawl configuration"
Make the most of it:
Use this lens as your first step when starting with Oncrawl.
2. Content
The Content Lens checks your site’s content. It flags thin content, duplicate pages, and missing metadata and provides a structured audit view.
How to use it:
Go to your Project page.
Clic on “Create configuration”
Click on "Content"
Select your main content by excluding CSS attributes before launching this lens
Make the most of it:
Exclude repeated elements like headers and footers using CSS extraction rules.
Management of pages with Content duplication issues is the most useful chart. (CS explanation 42.25)
3. Sanity Check
The Sanity Check Lens validates crawl configurations. It detects errors and ensures everything is correct before launching a crawl.
How to use it:
Go to your Project page
Clic on “Create configuration”
Click on "Sanity check"
Upload a seed file that meets these rules:
.ZIP format
File size under 10 MB
One column with URLs
Make the most of it:
Highlight business-critical pages
Set up a daily schedule
Activate template alerts after your first crawl
4. Performance
The Performance Lens adds site performance data to your crawl. It shows how technical performance impacts SEO.
How to use it:
Go to your Project page
Clic on “Create configuration”
Click on "Performance"
Upload a seed file that meets these rules:
.ZIP format
File size under10 MB
One column with URLs
Make the most of it:
Monitor Core Web Vitals and page speed on key pages
Set up a daily schedule
Create template alerts after your first crawl