What is a redirect chain and why is it bad?

A redirect chain occurs when URL redirection happens consecutively multiple times, like "A → B → C". It not only slows down page load speed, but also causes search engine crawlers to give up tracking, negatively impacting SEO as pages may not be indexed.

What is the difference between 301 and 302 redirects?

A 301 is a "permanent" move that passes the SEO value (link juice) of the old URL to the new one. A 302 is a "temporary" move and generally does not pass this value. For site migrations, it is highly recommended to always use 301 redirects for SEO purposes.

Will having many 404 errors lower my site's ranking?

404 errors themselves do not directly cause a site-wide penalty. However, they increase the bounce rate because users cannot reach their desired content. Furthermore, broken links to important pages reduce crawler efficiency, so they should be fixed promptly.

A Soft 404 occurs when a server returns a "200 OK" status code even though the page does not exist (and should normally return a 404). Because search engines mistakenly recognize that content exists, it is a significant negative factor for SEO.

What causes a redirect loop?

It happens when there is a circular setting, such as "redirecting from URL A to B, and then from URL B back to A". Browsers will display an "ERR_TOO_MANY_REDIRECTS" error, preventing the page from loading and blocking access for both users and crawlers.

How often should I check status codes?

Depending on the scale and update frequency of the site, checking major pages or pages with many backlinks once a month is recommended. Also, you should definitely perform a full check immediately after a site renewal, domain change, or large-scale content deletion.

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status code,

HTTP Status Code Checker Tool

Instantly check the status code and redirect history (chain) of a URL.
Ideal for SEO optimization and verifying redirect settings during website migration.

⚡

Instant Check

Just enter the URL

🔄

Redirect Tracking

Visualize all routes

🆓

No Registration

Completely free to use

about,

Overview of the HTTP Status Code Checker

Accurately understanding HTTP status codes is crucial for website SEO and system operation. This tool allows you to instantly check what kind of response a specified URL returns (such as 200 OK, 404 Not Found, etc.).

Furthermore, it tracks and displays the entire redirect chain (chains of 301s and 302s) when a URL is forwarded to another page. This helps you quickly discover missing redirects during a site migration or performance drops caused by unnecessary redirects.

how to,

How to check status codes and redirects

STEP 1

Enter the URL

Enter the complete URL (starting with http:// or https://) of the page you want to check in the input field.

STEP 2

Execute the Check

Click the "Check" button. The backend server of this tool will start communicating with the target URL to check its status.

STEP 3

Analyze the Results

After a short wait, all routes and status codes from the entered URL to the final destination URL will be displayed in a table format. Confirm the meaning of the status codes and modify your site if necessary.

glossary,

Status Code Glossary

200 OK: The request succeeded, and the page was returned normally. This is the standard, most desirable status for both users and search engines.
301 Moved Permanently: Indicates a permanent URL redirection. It is used during site migrations or URL changes and effectively passes SEO value (link juice) to the new URL.
302 Found: Indicates a temporary redirect. It is used for temporary transfers like during maintenance, but caution is needed because using it for permanent changes will not pass on SEO value.
404 Not Found: Indicates that the requested page does not exist. It causes broken links, and a high number of them impairs user experience and crawler efficiency.
500 Internal Server Error: Indicates that an error occurred inside the server and the request could not be processed. This is mainly caused by program bugs or server misconfigurations.
Redirect Chain: Continuous redirection from URL A to B, and then from B to C. Search engine crawlers give up tracking if redirected too many times, which negatively impacts SEO.
Soft 404: A situation where the server returns a "200 OK" status code even though the page content implies it does not exist (like a "Not found" text). Google treats this as an error.
Crawlability: An indicator of how smoothly search engine robots (crawlers) can navigate and retrieve pages within a website. Returning appropriate status codes leads to improved crawlability.

faq,

Frequently Asked Questions (FAQ) about Status Codes

Q.What is a redirect chain and why is it bad?: A redirect chain occurs when URL redirection happens consecutively multiple times, like "A → B → C". It not only slows down page load speed, but also causes search engine crawlers to give up tracking, negatively impacting SEO as pages may not be indexed.
Q.What is the difference between 301 and 302 redirects?: A 301 is a "permanent" move that passes the SEO value (link juice) of the old URL to the new one. A 302 is a "temporary" move and generally does not pass this value. For site migrations, it is highly recommended to always use 301 redirects for SEO purposes.
Q.Will having many 404 errors lower my site's ranking?: 404 errors themselves do not directly cause a site-wide penalty. However, they increase the bounce rate because users cannot reach their desired content. Furthermore, broken links to important pages reduce crawler efficiency, so they should be fixed promptly.
Q.What is a Soft 404?: A Soft 404 occurs when a server returns a "200 OK" status code even though the page does not exist (and should normally return a 404). Because search engines mistakenly recognize that content exists, it is a significant negative factor for SEO.
Q.What causes a redirect loop?: It happens when there is a circular setting, such as "redirecting from URL A to B, and then from URL B back to A". Browsers will display an "ERR_TOO_MANY_REDIRECTS" error, preventing the page from loading and blocking access for both users and crawlers.
Q.How often should I check status codes?: Depending on the scale and update frequency of the site, checking major pages or pages with many backlinks once a month is recommended. Also, you should definitely perform a full check immediately after a site renewal, domain change, or large-scale content deletion.

scenes,

Use Cases

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API Development Reference

Quickly look up the meaning and proper usage of HTTP status codes when designing REST APIs or debugging errors.
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Infrastructure Error Investigation

Identify the meaning and causes of errors like 502 Bad Gateway found in server logs.