How to fix JavaScript SEO problems on a scale
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This document discusses common JavaScript bugs that can cause SEO problems and how to identify and fix them. It identifies 7 common JS bugs like pages not fully rendering or having incomplete content. It recommends crawling thousands of pages to identify issues, setting up JavaScript error monitoring in tools like Screaming Frog, and ensuring JS requests are excluded from log file analysis. The key takeaways are that JS SEO is about troubleshooting, communication with developers is important, and tools are needed to do JS QA at scale.
How to fix JavaScript SEO problems on a scale
- 1. How to fix JavaScript SEO problems on a scale Serge Bezborodov JetOctopus slideshare.net/sergebezborodov @sergebezborodov
- 2. JetOctopus Serge Bezborodov What is the difference between modern JavaScript websites and old-school
- 3. JetOctopus Serge Bezborodov modern JavaScript website JavaScript Application old-school HTML Documents
- 4. JetOctopus Serge Bezborodov Applications have bugs
- 5. JetOctopus Serge Bezborodov BUGS = Google cant render page properly
- 6. JetOctopus Serge Bezborodov JavaScript SEO is mostly about pages rendered properly
- 7. JetOctopus Serge Bezborodov JavaScript SEO = QA
- 8. JetOctopus Serge Bezborodov Lets go with the most usual JavaScript bugs
- 9. JetOctopus Serge Bezborodov JS Bug #1: Page cant be fully rendered -page loads quite a long time -page cant be fully rendered (you dont see a footer) -page became fully loaded after some interaction (scroll, click) test cases:
- 10. JetOctopus Serge Bezborodov JS Bug #2: Incomplete content -page misses some content blocks -JavaScript removes some content (Im not joking) test cases:
- 11. JetOctopus Serge Bezborodov JS Bug #3: JavaScript redirects window.location.href = /new-page.html redirect without 301/302 server status codes JavaScript Code:
- 12. JetOctopus Serge Bezborodov JS Bug #4: Different content for User-agents
- 13. JetOctopus Serge Bezborodov JS Bug #5: SSR is broken -text/HTML ratio closer to 0
- 14. JetOctopus Serge Bezborodov JS Bug #6: SSR misses some content -SSR should have the same content as the client-rendered page (with very few exceptions) -make custom extraction rules for blocks, elements, or text test cases:
- 15. JetOctopus Serge Bezborodov JS Bug #7: Changed titles, meta by JS -JavaScript may change page title, meta description -JavaScript may change <meta name=robots> test cases:
- 16. JetOctopus Serge Bezborodov JS Bug #7: robots.txt - shot in the foot - robots.txt rules are applied to JavaScript files as well - subdomains may have their own robots.txt (huge attention here!!!) - never analyze robots.txt only by eyes, use the tools!
- 17. JetOctopus Serge Bezborodov JS Bug #7: robots.txt - shot in the foot pages with ?utm_source will not be crawled by Googlebot
- 18. JetOctopus Serge Bezborodov JS Bug #7: robots.txt - shot in the foot and JavaScript files as well page may be not rendered fully
- 19. JetOctopus Serge Bezborodov JS Bug #7: robots.txt - shot in the foot subdomains may have own robots.txt !!!!!!!
- 20. JetOctopus Serge Bezborodov - I checked a bunch of template pages, everything works fine The common way of JS QA
- 21. JetOctopus Serge Bezborodov - nope, check more
- 22. JetOctopus Serge Bezborodov check more = crawl more not hundreds of pages but tens of thousands
- 23. JetOctopus Serge Bezborodov JavaScript Errors setup in Screaming Frog
- 24. JetOctopus Serge Bezborodov in JetOctopus enabled by default
- 25. JetOctopus Serge Bezborodov Bonus part
- 26. JetOctopus Serge Bezborodov How JS can harm log file analysis
- 27. JetOctopus Serge Bezborodov Its not a page crawled by GBot but JS requests
- 28. JetOctopus Serge Bezborodov Make sure, you exclude JS requests from your log file analysis
- 29. JetOctopus Serge Bezborodov Crawl budget is the amount of crawled pages, not JS requests made during pages rendering
- 30. JetOctopus Serge Bezborodov Conclusions -JavaScript is already with us and wont go shortly -JavaScript SEO is all about troubleshooting -you can do almost nothing by yourself -make strong communication with the developers' team -without tools, its impossible to do it on a scale
- 31. JetOctopus Serge Bezborodov Thank you @sergebezborodov Extended JavaScript Crawler JetOctopus.com 7 days free trial