What this test checks
Reachability and HTTPS
Whether the page answers with HTTP 200 over HTTPS, and whether plain-HTTP requests are sent to HTTPS with a permanent 301 or 308 redirect.
Redirects and www consolidation
How many redirects the URL takes to reach the final page, and whether the www and non-www versions of your domain lead to one preferred host.
Server response time (TTFB)
Time to the first byte of the HTML, measured from our test server in Virginia, USA.
Size, compression and HTTP version
HTML document size, gzip, Brotli or zstd compression, and whether the server supports HTTP/2 or HTTP/3.
Indexing blocks
An X-Robots-Tag: noindex response header, a common leftover from staging setups that keeps the page out of search results.
H1 and heading outline
Exactly one H1 that states the topic, H2 subheadings, and no skipped levels such as an H2 followed directly by an H4.
Text in the HTML
How much readable body text the raw HTML contains, which exposes pages that are drawn entirely by JavaScript.
Images and internal links
Alt text and width and height on images, lazy loading on image-heavy pages, the number of internal links and how descriptive their link text is.
Sample result
A real result for devteam.co.kr, tested 1 hour ago.
SEO essentials
The homepage responded in 825 ms and landed on www.devteam.co.kr. H1 "MVP부터 AI·앱 개발까지,실제로…", 4,756 characters of text, 12 images, 26 internal links.
Server response time (TTFB) (Improve)
Time to first byte, measured from our test server in the US (Virginia), is slow. Check page caching and server performance.
825 ms
Homepage response (Good)
Search engines can load the homepage normally.
HTTP 200
HTTPS enabled (Good)
The site is served over a secure connection (HTTPS).
HTTPS
HTTP → HTTPS redirect (Good)
HTTP requests are permanently redirected (301) to HTTPS.
301
www vs. non-www (Good)
devteam.co.kr redirects to www.devteam.co.kr.
www.devteam.co.kr
Redirect chain (Good)
The URL loads directly, with no redirects.
None
How the home page responded
| Final URL | https://www.devteam.co.kr/ |
|---|---|
| Response | HTTP 200 · HTTP/2 · 104.21.34.129 |
| First byte | 825 ms (from our US server) |
| server | cloudflare |
| content-type | text/html; charset=utf-8 |
| cache-control | no-cache, private |
| cf-cache-status | DYNAMIC |
| content-encoding | zstd |
| strict-transport-security | max-age=15552000; includeSubDomains; preload |
How it works
- Our test server in Virginia, USA, requests the URL you enter together with its http://, www and non-www versions, following up to 5 redirects.
- Requests identify themselves as WebPSQCBot/3.0, time out after 15 seconds and read up to 3 MB of HTML.
- The HTML is analyzed as delivered, without running JavaScript, so text that scripts add later is not counted.
- Every URL and redirect hop must use http or https on port 80 or 443 and resolve to public IP addresses; private and internal addresses are refused.
- Only the URL you enter is analyzed, usually in about 6 seconds; the site crawl test checks your other pages.
How it is scored
The score uses our item-weighted formula: a pass earns full credit, a warning half and a fail none. Page status, HTTPS, server response time and the H1 count 3×; the HTTPS redirect, www consolidation, redirect chain, compression, body text, image alt text and internal links 2×; HTML size, HTTP version, heading order, image dimensions, lazy loading and link text 1×. A noindex header, or a script-heavy page with almost no text in its HTML, counts 3× when it fails.
| Check | Good | Needs work | Poor |
|---|---|---|---|
| Server response time (TTFB, from Virginia) | 0.8 s or less | 0.8–1.8 s | Over 1.8 s |
| Redirects before the final URL | 0–1 | 2 | 3 or more |
| HTTP to HTTPS redirect | 301 or 308 | 302 or 307 (temporary) | No redirect |
| H1 headings | Exactly one, with text | Several, or empty | None |
| Text in the HTML (characters, not counting spaces) | 300 or more | Under 300 | Under 150 with 3+ external scripts |
| Images without an alt attribute | None | Up to 20% | Over 20% |
| Unique internal links | 5 or more | 1–4 | None |
Grades: A+ 95–100 · A 90–94 · B 80–89 · C 70–79 · D 60–69 · F below 60.