Speed
Table of Contents
General
- Installation
- Installation on Windows
- Installation on macOS
- Installation on Ubuntu
- Installation on Fedora
- Crawling
- Saving, opening, exporting & importing crawls
- Configuration
- Scheduling
- Exporting
- Robots.txt
- User agent
- Memory
- Checking memory allocation
- Cookies
- XML sitemap creation
- Visualisations
- Reports
- Command line interface set-up
- Command line interface
- User Interface
- Search function
- Auto Updates
Configuration Options
Spider Crawl Tab
- Images
- Media
- CSS
- JavaScript
- SWF
- Internal hyperlinks
- External links
- Canonicals
- Pagination (rel next/prev)
- Hreflang
- AMP
- Meta refresh
- iframes
- Mobile alternate
- Check links outside of start folder
- Crawl outside of start folder
- Crawl all subdomains
- Follow internal or external ‘nofollow’
- Crawl linked XML sitemaps
Spider Extraction Tab
Spider Limits Tab
Spider Rendering Tab
Spider Advanced Tab
- Cookie storage
- Ignore non-indexable URLs for Issues
- Ignore paginated URLs for duplicate filters
- Always follow redirects
- Always follow canonicals
- Respect noindex
- Respect canonical
- Respect next/prev
- Respect HSTS policy
- Respect self referencing meta refresh
- Extract images from img srcset attribute
- Crawl fragment identifiers
- Perform HTML validation
- Green hosting carbon calculation
- Assume pages are HTML
- Response timeout
- 5XX response retries
Spider Preferences Tab
Other Configuration Options
- Content area
- Duplicates
- Spelling & grammar
- Robots.txt
- URL rewriting
- CDNs
- Include
- Exclude
- Speed
- User agent
- HTTP header
- Custom search
- Custom extraction
- Custom link positions
- Custom JavaScript
- Google Analytics integration
- Google Search Console integration
- PageSpeed Insights integration
- Majestic
- Ahrefs
- Moz
- Authentication
- Segments
- Crawl analysis
- User Interface
- Language
- Proxy
- Storage mode
- Memory allocation
- Trusted Certificates
- Mode
Tabs
Top Tabs
- Internal
- External
- Security
- Response Codes
- URL
- Page titles
- Meta description
- Meta keywords
- h1
- h2
- Content
- Images
- Canonicals
- Pagination
- Directives
- hreflang
- JavaScript
- Links
- AMP
- Structured data
- Sitemaps
- PageSpeed
- Mobile
- Custom search
- Custom extraction
- Custom JavaScript
- Analytics
- Search Console
- Validation
- Link Metrics
- Change Detection
Lower Window Tabs
Right Side Window Tabs
Speed
Configuration > Speed
The speed configuration allows you to control the speed of the SEO Spider, either by number of concurrent threads, or by URLs requested per second.
When reducing speed, it’s always easier to control by the ‘Max URI/s’ option, which is the maximum number of URL requests per second. For example, the screenshot below would mean crawling at 1 URL per second –
The ‘Max Threads’ option can simply be left alone when you throttle speed via URLs per second.
Increasing the number of threads allows you to significantly increase the speed of the SEO Spider. By default the SEO Spider crawls at 5 threads, to not overload servers.
Please use the threads configuration responsibly, as setting the number of threads high to increase the speed of the crawl will increase the number of HTTP requests made to the server and can impact a site’s response times. In very extreme cases, you could overload a server and crash it.
We recommend approving a crawl rate and time with the webmaster first, monitoring response times and adjusting the default speed if there are any issues.
