How to Fix Crawl Errors (Step-by-Step)

Crawl Errors is the kind of issue that quietly burns through your crawl budget while you're focused on content. It rarely shows up as a single dramatic problem — it accumulates across hundreds of pages, suppressing rankings invisibly.

This is the no-fluff fix guide. Diagnostic in 5 minutes, fix in 30, verify in 10.

What Causes Crawl Errors?

Crawl Errors usually comes from one of three sources:

Configuration drift — settings that were correct once but broke during a deploy or theme update
Template-level bug — the issue affects every page that shares a template, not just one
Third-party interference — a plugin, CDN, or external service silently introduced the problem

Crawl Errors diagnosis workflow on a development screen

How to Diagnose Crawl Errors

Before fixing anything, confirm the scope. Run these three checks:

Crawl the site. A free atlookup audit will tell you how many pages have crawl errors and which templates they share.
Check Search Console. Look for related coverage warnings, performance drops, or mobile usability flags.
Spot-check three different page types. Confirm whether crawl errors is site-wide or template-specific.

The key is identifying the template pattern. Fixing 100 individual pages takes a week; fixing the template once takes an hour and resolves all 100.

Step-by-Step: How to Fix Crawl Errors

Apply these in order. Each step takes 5–30 minutes and resolves the most common cause first.

Step 1 — Confirm the scope

Run a full crawl. Note exactly how many URLs are affected and which templates they belong to. Fix the template, not the symptoms.

Step 2 — Check the source

Inspect the rendered HTML of an affected page. Compare to a healthy page of the same type. The diff usually points straight at the cause.

Step 3 — Apply the template-level fix

For most causes of crawl errors, the fix lives in your theme/template files or CMS configuration. Make the change in the source, not on individual pages.

Step 4 — Clear caches

Page cache, CDN cache, browser cache. Many "the fix didn't work" reports are actually "the fix is cached behind a stale layer".

Step 5 — Re-crawl and verify

Run another audit. Confirm the affected URL count drops to zero (or close). If it doesn't, you're seeing a different cause — go back to Step 2.

Crawl Errors fix being verified in an audit dashboard

Preventing Crawl Errors from Coming Back

The same issue resurfacing six weeks later is the most common pattern in audits. Three preventive measures:

Add a CI/CD audit step. Crawl staging before every deploy goes live.
Monitor weekly. Set up automated re-crawls so issues surface in days, not quarters.
Document the fix. Add a comment in the template explaining what was fixed and why, so the next dev doesn't undo it.

If your site has any of the issues above, you're losing rankings every week. Free audit, 60 seconds — it'll show you exactly what's wrong.

When Crawl Errors Is a Symptom of Something Bigger

Sometimes crawl errors is a downstream effect of a deeper architectural problem. Watch for these red flags:

Multiple unrelated issues appearing on the same set of pages
Issues that resolve temporarily then reappear after a deploy
Issues only visible to crawlers (not to logged-in users)

If any of these match, audit the underlying template, build pipeline, or third-party integration before patching the symptoms.

Architecture diagram showing systemic causes of crawl errors

Where Most Teams Get Stuck

The most common failure mode isn't lack of knowledge — it's lack of execution discipline. Teams audit, build a fix list, ship the easy wins, then drift away from the harder ones.

Three discipline patterns separate the teams that compound from the teams that stall:

Weekly audit cadence. Not monthly, not quarterly. Drift accumulates fast.
Fix at the template level. Patching individual pages is slow and recurs. Template fixes scale.
Verify every fix. "Should be fixed" is not the same as "verified fixed". Re-crawl, confirm, then move on.

Skip the manual checks. atlookup runs every check in this guide automatically — full report in under 60 seconds, no signup.

If this guide was useful, the following articles go deeper on adjacent topics:

Crawl Errors — Frequently Asked Questions

Can crawl errors cause a manual penalty?

Rarely on its own, but persistent crawl errors combined with other quality signals can contribute to algorithmic suppression. Fix it as soon as you spot it.

Will fixing crawl errors improve my rankings?

If crawl errors is hurting crawlability, indexability, or Core Web Vitals — yes, often within 2–6 weeks. If it's a minor UX issue, the impact is smaller and slower.

How long does it take to fix crawl errors?

For a single template-level fix, 30 minutes to 2 hours. For sites with multiple cascading causes, half a day to a day. Re-crawl verification adds another hour.

Do I need a developer to fix crawl errors?

For root-cause fixes, often yes. For configuration tweaks via your CMS admin, usually no. Identify the cause first; the right hire follows.

Is crawl errors affecting all my pages or just some?

Run a full crawl to find out. Crawl Errors usually clusters by template — fixing the template fixes every affected page in one move.