100
Continue
The server has received the headers and is waiting for the request to continue.
Network and API
HTTP status codes directory
The reference helps you quickly understand what server response code means and how it affects APIs, SEO, caching, redirects, and custom scripting.
FreeNo registrationOnline in browser
What the tool can do
- Search by status code or name.
- Division into groups 1xx–5xx.
- An explanation of the cases in which the code occurs.
How to use
- Enter the code or part of the status name.
- Open the desired card from the list.
- Use explanation for debug or documentation.
Where is this service useful?
Debugging APIs and web applications.
Checking SEO redirects and 404 pages.
Preparation of documentation and technical specifications.
FAQ
Why are HTTP statuses important for SEO?
Search engines rely on response codes. Errors 404, 5xx and incorrect redirects directly affect indexing and crawl quality.
Why know the difference between 301 and 302?
Because permanent and temporary redirects have different effects on indexing, signaling, and caching.
Related tools
All instruments🛰️🧭🧪
API tester online
Check the API request: method, URL, headers and body. Quickly view the status, response time, headers and JSON response of the server.
Full site audit
Check the site for SEO, security, indexing, accessibility and speed. Get a clear list of issues and priority fixes.
Regex tester online
Check the regular expression, flags, and matches found. The tool helps you quickly debug search, validation and text parsing.
NBM-IT
Need a tool for your process?
We can make a custom calculator, validator, integration helper or audit panel for your data, CRM and internal scripts.