How to Request Google to Recrawl Your URLs #
1. Using URL Inspection Tool (For a Few URLs) #
- Best for individual URLs or small batches.
- Requires you to be owner or full user in Google Search Console.
- Go to Search Console > URL Inspection > Enter your URL > Click Request Indexing.
- Note: There’s a quota limit, and multiple requests for the same URL won’t speed up crawling.
2. Submit or Resubmit a Sitemap (For Many URLs) #
- If you have many URLs, submitting a sitemap is the efficient way.
- A sitemap helps Google discover and prioritize pages.
- Useful when launching a new site, making major changes, or adding lots of new content.
- You can submit a sitemap via Google Search Console > Sitemaps > Add Sitemap URL.
- Sitemaps can also include metadata for videos, images, news, or alternate language pages.
Important Points #
- Hosted platforms like Blogger or WordPress often submit new content automatically — check their support docs.
- Crawling can take days or weeks — be patient and monitor progress.
- Requesting a crawl does not guarantee instant indexing or ranking; Google prioritizes quality and usefulness.
What’s the Issue with Faceted Navigation URLs? #
Faceted navigation lets users filter items (products, articles, events) by parameters in the URL query string, like:
https://example.com/items.shtm?products=fish&color=radioactive_green&size=tiny
The problem: Many filter combinations generate tons of URLs, which can lead to:
- Overcrawling: Googlebot wastes resources crawling many similar filtered URLs with little SEO value.
- Slower discovery: Crawlers spend time on filtered URLs instead of your important new content.
How to Manage Faceted Navigation URLs #
1. Prevent Crawling of Faceted URLs (If You Don’t Need Them Indexed) #
Use robots.txt to block crawling of URLs with specific query parameters:
User-agent: Googlebot
Disallow: /*?*products=
Disallow: /*?*color=
Disallow: /*?*size=
Allow: /*?products=all$
- Use URL fragments (#) for filters instead of parameters — Googlebot ignores fragments, so these URLs won’t be crawled.
- Use rel=”canonical” on filtered pages pointing to the main unfiltered URL to consolidate SEO signals.
- Use rel=”nofollow” on links pointing to filtered pages to discourage crawling.
Note: rel=”canonical” and rel=”nofollow” are less effective at saving crawl budget than robots.txt or URL fragments.
2. If You Need Faceted URLs to Be Crawled and Indexed (Use Best Practices) #
- Use standard & to separate URL parameters — avoid commas, semicolons, brackets.
- If filters are encoded in the URL path (e.g., /products/fish/green/tiny), keep filter order consistent and avoid duplicates.
- Return HTTP 404 status for:
- Filter combinations with no results.
- Duplicate or nonsensical filter combinations.
- Invalid pagination URLs.
- Filter combinations with no results.
- Don’t redirect these to a generic “not found” page; serve 404 on the actual URL to prevent indexing useless pages.
Summary Tips: #
- Block unnecessary filtered URLs with robots.txt if they don’t add value.
- Use canonical tags to point filtered pages to their main versions.
- Serve proper 404 errors for empty or invalid filters.
- Use standard URL syntax to help Google parse URLs properly.
Large Site Owner’s Guide to Managing Crawl Budget — Key Points #
Who Should Read This? #
- Sites with 1 million+ pages updating moderately (about weekly)
- Sites with 10,000+ pages updating very frequently (daily)
- Sites with lots of URLs marked as Discovered – currently not indexed in Search Console
If your site is smaller or pages get crawled quickly after publishing, this guide is not essential.
What Is Crawl Budget? #
Crawl Budget = How many pages Googlebot can and wants to crawl on your site within a given time.
It’s controlled by two main factors:
- Crawl Capacity Limit (Googlebot’s limit)
- Maximum simultaneous connections and crawl rate set by Google to avoid overloading your server.
- Adjusts dynamically based on your server’s health (fast responses = more crawl capacity, slow/errors = less).
- Limited by Google’s overall crawling resources too.
- Maximum simultaneous connections and crawl rate set by Google to avoid overloading your server.
- Crawl Demand (Googlebot’s interest)
- How much Google wants to crawl your site, based on:
- How many URLs it knows exist (including duplicates or low-value pages, which waste crawl budget)
- Popularity of URLs (more popular pages get crawled more often)
- How fresh/stale content is (frequent updates mean more crawl demand)
- How many URLs it knows exist (including duplicates or low-value pages, which waste crawl budget)
- Special events (like site moves) can temporarily boost crawl demand.
- How much Google wants to crawl your site, based on:
How to Increase Your Crawl Budget? #
Google allocates crawl budget based on:
- Serving Capacity: Make sure your server responds quickly and reliably to crawlers.
- Content Value: Publish unique, high-quality content that searchers find valuable.
- Site Structure: Reduce duplicate URLs and remove low-value or thin-content pages to avoid wasting crawl budget.
Important Tips for Large Sites #
- Keep server performance optimized to encourage higher crawl capacity.
- Regularly review and clean up duplicate or unnecessary URLs.
- Use tools like Search Console’s Index Coverage and URL Inspection to monitor crawl & index status.
- Maintain an updated sitemap to guide Google efficiently to important URLs.
- Avoid unnecessary URL parameters or faceted navigation that generate infinite URLs (manage via robots.txt or canonical tags).
What If Your Pages Aren’t Indexed? #
If pages have been around but never indexed, check their status with the URL Inspection tool rather than relying on crawl budget changes.
Best Practices to Maximize Google Crawling Efficiency #
1. Manage Your URL Inventory #
- Use tools (robots.txt, canonical tags, noindex) to guide Google on which URLs to crawl or avoid.
- Avoid letting Google waste crawl budget on URLs that are irrelevant for indexing.
- Consolidate duplicate content to focus crawling on unique pages.
2. Block Unwanted URLs with Robots.txt #
- Block crawling of low-value or duplicate pages (e.g., infinite scroll, sorted versions).
- Avoid using robots.txt as a temporary crawl budget reallocator.
- Don’t use noindex to block crawling — Google will still crawl and then drop those pages, wasting crawl time.
3. Handle Removed Pages Properly #
- Use HTTP status 404 (Not Found) or 410 (Gone) for permanently removed pages.
- Soft 404s (pages that appear empty but return 200 status) waste crawl budget — fix these.
4. Keep Sitemaps Fresh and Relevant #
- Include all URLs you want Google to crawl.
- Use the <lastmod> tag to indicate updated pages.
- Avoid submitting sitemaps with URLs you don’t want indexed.
5. Avoid Long Redirect Chains #
- They slow down crawling and reduce crawl efficiency.
6. Make Pages Fast and Efficient to Load #
- Speed up server response and rendering times.
- Block non-essential resources (like decorative images or large scripts) via robots.txt.
- Minimize heavy or slow resources to speed up crawling.
7. Use HTTP Caching Headers #
- Support If-Modified-Since and return 304 Not Modified when content hasn’t changed.
- Saves server resources and allows Googlebot to crawl more efficiently.
8. Monitor Crawl Activity and Site Availability #
- Use Google Search Console’s Crawl Stats report to detect availability issues or server overloads.
- Use URL Inspection tool to check crawl status of individual URLs.
- Check server logs for Googlebot crawl patterns.
- Increase server capacity if Google is hitting crawl limits.
9. Help Google Discover Important Content #
- Submit updated sitemaps regularly.
- Use crawlable, standard HTML <a> links for navigation.
- For mobile sites, ensure the same links exist as on desktop or include them in sitemaps.
- Use simple URL structures.
10. Avoid Over-Exposing Low-Value URLs #
- Faceted navigation, session IDs, duplicate content, soft 404 pages, hacked pages, infinite URL spaces — block or fix these.
- Shopping cart or “action” pages usually shouldn’t be crawled or indexed.
11. Don’ts #
- Don’t toggle robots.txt frequently to manipulate crawl budget.
- Don’t rely on noindex meta tags for blocking crawling.
- Don’t expect immediate crawling or indexing after sitemap submission.
- Don’t submit unchanged sitemaps multiple times per day.
12. Handling Overcrawling Emergencies #
- Temporarily return 503 Service Unavailable or 429 Too Many Requests when server overloads occur.
- Stop returning these errors after 1-2 days; prolonged usage will cause permanent crawl reduction.
- Monitor server logs for Googlebot request volume.
- For AdsBot crawl spikes, adjust Dynamic Search Ads targets or increase capacity.
How HTTP Status Codes, Network, and DNS Errors Affect Google Search #
What are HTTP Status Codes? #
- When Googlebot (or any browser) requests a page, the web server responds with a status code.
- Status codes tell Googlebot what happened with the request — success, redirect, error, etc.
- Different codes have different meanings, but many share similar outcomes (e.g., several types of redirects).
HTTP Status Code Categories & Impact on Google Search #
| Status Code Range | Meaning | Google Search Impact |
| 2xx (Success) | Request succeeded; page delivered | Page content can be indexed (but 2xx doesn’t guarantee indexing). |
| 3xx (Redirects) | Page moved or redirecting | Google follows redirect to new URL; if redirect fails, Search Console shows errors. |
| 4xx (Client errors) | Page not found, forbidden, etc. | Pages with 4xx errors aren’t indexed; Google reports these as errors. |
| 5xx (Server errors) | Server failed to respond properly | Crawling is delayed; Google may reduce crawl rate; pages won’t be indexed until fixed. |
Most Important Status Codes to Know #
- 200 OK: Page loaded fine; content eligible for indexing.
- 301 Moved Permanently: Permanent redirect to another URL; Google passes ranking signals to new URL.
- 302 Found / 307 Temporary Redirect: Temporary redirect; Google treats the original URL as the canonical one unless otherwise told.
- 404 Not Found: Page doesn’t exist; Google drops it from the index over time.
- 410 Gone: Page removed permanently; stronger signal than 404 to drop URL faster.
- 500 Internal Server Error: Server had an error; Google retries crawling later.
- 503 Service Unavailable: Server temporarily unavailable; signals Google to retry later without dropping URL.
- 429 Too Many Requests: Server rate-limiting requests; Google slows crawling.
Network and DNS Errors #
- If Googlebot cannot reach your server due to network errors (timeouts, connection failures) or DNS errors (domain name resolution fails), Google treats this as a temporary issue.
- Google will retry crawling but repeated failures can lead to crawl delays or drops.
- These errors show up as warnings or errors in Search Console under Coverage or Page Indexing reports.
Key Takeaways #
- Successful responses (2xx) mean Google can index your content — but indexing depends on quality, relevance, etc.
- Redirects (3xx) must be set correctly; broken redirects can cause crawl errors.
- Client errors (4xx) remove URLs from Google’s index.
- Server errors (5xx) slow crawling; fix quickly to maintain crawl budget.
- Temporary server unavailability (503) or rate-limiting (429) tells Google to back off temporarily.
- Network/DNS failures cause Googlebot to retry but too many failures will reduce crawl frequency.
| Status Code | Meaning | How Google Handles It |
| 2xx (Success) | Content considered for indexing, but indexing is not guaranteed. | |
| 200 | Success | Content passed to indexing pipeline. |
| 201, 202 | Created, Accepted | Googlebot waits briefly for content, then passes what it has to indexing. |
| 204 | No Content | Signals no content; may show soft 404 in Search Console. |
| 3xx (Redirects) | Googlebot follows up to 10 redirects; final URL content is indexed, intermediate redirect content ignored. | |
| 301 | Moved Permanently | Strong signal that target URL is canonical. |
| 302, 307 | Temporary Redirect | Weak signal that target URL is canonical. |
| 303 | See Other | Treated like 302. |
| 304 | Not Modified | Signals content unchanged since last crawl; no impact on indexing. |
| 308 | Permanent Redirect | Treated like 301. |
| 4xx (Client Errors) | URLs returning 4xx are not indexed; previously indexed URLs are removed from index. Content ignored by Googlebot. | |
| 400 | Bad Request | Signals content doesn’t exist; URL removed from index if previously indexed; crawling frequency reduces gradually. |
| 401 | Unauthorized | Treated like other 4xx; no effect on crawl rate. |
| 403 | Forbidden | Same as 401. |
| 404 | Not Found | Same as 400. |
| 410 | Gone | Same as 400; stronger signal to remove URL from index faster. |
| 411 | Length Required | Treated like 400. |
| 429 | Too Many Requests | Treated as a server error; signals server overload; Googlebot slows crawl. |
| 5xx (Server Errors) | Googlebot slows crawl rate; content ignored; URLs persistently failing are eventually dropped from index. | |
| 500 | Internal Server Error | Crawl rate decreased proportionally to number of errors. |
| 502 | Bad Gateway | Same as 500. |
| 503 | Service Unavailable | Same as 500; signals temporary server overload. |
Soft 404 Errors #
What is a Soft 404?
A page that shows a “not found” or error message but returns a 200 OK HTTP status code instead of a 404 or 410. Sometimes it’s an empty page or one missing content due to backend issues.
Why it’s bad:
- Confuses users who expect a working page.
- Wastes Googlebot’s crawl budget on pages that are essentially errors.
- These pages are excluded from Search and flagged in Search Console.
How to Fix Soft 404 Errors: #
- Page & Content No Longer Exists:
- Return a 404 (Not Found) or 410 (Gone) HTTP status code.
- Customize your 404 page for user experience: friendly message, navigation, popular links, report broken links option.
- Return a 404 (Not Found) or 410 (Gone) HTTP status code.
- Page or Content Moved Elsewhere:
- Use a 301 Permanent Redirect to the new URL.
- Verify correct response via URL Inspection Tool.
- Use a 301 Permanent Redirect to the new URL.
- Page & Content Still Exist:
- Check if Googlebot sees the full content or errors out during rendering.
- Use URL Inspection Tool to view rendered page.
- Fix missing or blocked critical resources (images, scripts).
- Ensure resources aren’t blocked by robots.txt.
- Improve page load time and fix server errors.
- Check if Googlebot sees the full content or errors out during rendering.
Network and DNS Errors #
Impact on Googlebot:
- Googlebot treats these errors like 5xx server errors.
- Causes immediate crawl slowdown.
- Google can’t get page content, so URLs are removed from index within days if errors persist.
- Errors show in Search Console reports.
How to Debug Network Errors #
- Check firewall rules — ensure Googlebot IPs aren’t blocked.
- Analyze network traffic with tools like tcpdump, Wireshark.
- Look for overloaded or misconfigured network interfaces or closed ports.
- Contact your hosting provider or CDN support if unsure.
How to Debug DNS Errors #
- Check firewall to allow DNS queries from Googlebot IPs (both UDP and TCP).
Verify DNS records with dig or similar tools:
dig +nocmd example.com a +noall +answer
dig +nocmd www.example.com cname +noall +answer
dig +nocmd example.com ns +noall +answer
- Confirm your name servers are correctly set and responding.
- If DNS changes were recent, wait up to 72 hours for propagation.
- Flush Google Public DNS cache to speed up propagation.
- Ensure your DNS server is healthy and not overloaded.