sympdocu.com
Sympdocu — ความรู้สุขภาพที่เชื่อถือได้ ตรวจสอบโดยทีมบรรณาธิการ · Sympdocu
2 failed · 8 warnings · 20 passed
Audited Tue, 28 Jul 2026 13:30:08 GMT · https://www.sympdocu.com/th
Meta & Head
18.1/25
Title, description, canonical, social tags — what search engines read first.
Title taghigh impactlow effort
<title> is "Sympdocu — ความรู้สุขภาพที่เชื่อถือได้ ตรวจสอบโดยทีมบรรณาธิการ · Sympdocu" (73 characters)
Search engines truncate titles past roughly 60 characters and often rewrite very short or vague ones, so the message you wrote may never actually be shown. Rewrite the title to 30–60 characters that lead with the primary keyword and end with your brand, e.g. "Merge PDF Files Online Free | YourBrand". Front-load the important words, since truncation always cuts from the end. Don't pad a short title with repeated keywords just to hit the range — clarity wins clicks, not length.
Meta descriptionhigh impactlow effort
Meta description is "ความรู้สุขภาพที่เชื่อถือได้ ตรวจสอบโดยทีมบรรณาธิการ" (51 characters)
Search engines truncate descriptions past roughly 160 characters, and very short ones waste the snippet space that persuades searchers to pick your listing over the next one. Rewrite it to 70–160 characters: state what the page offers, work the primary keyword in naturally (matching words get bolded in results), and end with a benefit or call to action. Don't cram in keywords — the description influences clicks, not rankings, so write it for humans.
Canonical URLmedium impactlow effort
Canonical href is "https://sympdocu.com/th" (host sympdocu.com does not match page host www.sympdocu.com)
This canonical tells search engines that another host owns the content, so they will typically index that URL and drop this one from results entirely. Unless this is deliberate syndication, update the href to this page's own URL on its own host — and make sure www vs non-www matches your preferred domain. The usual cause is a template copied between environments, so check that a staging or legacy domain isn't hard-coded in the site layout.
Open Graph tagsmedium impactlow effort
Missing Open Graph tags: og:image, og:url
Your Open Graph markup is incomplete, so social platforms fall back to guessed text or drop the preview image entirely when this page is shared — a broken card gets far fewer clicks than a complete one. Add the missing og:image, og:url tags to <head>. For og:image, use an absolute https:// URL to an image around 1200x630 pixels; relative paths are the usual reason previews break. Re-check with a platform's sharing debugger afterwards, since preview cards are cached.
5 passing checks
- Viewport meta tagViewport is "width=device-width, initial-scale=1"
- Character encoding declaredCharacter encoding is declared
- FaviconA <link rel="icon"> is present
- Twitter card tagtwitter:card is "summary"
- Page allows indexingNo restrictive robots meta tag
Content & Structure
22.1/25
Headings, copy depth, images, structured data, internal linking.
Image alt textmedium impactlow effort
0 of 6 images have alt text
Alt text is how search engines understand what an image shows — it feeds image-search rankings and is what screen readers announce to blind visitors. Add a short, specific alt attribute to every meaningful image, describing the content rather than listing keywords: alt="Golden retriever puppy playing in snow" beats alt="dog puppy pet animal". Give purely decorative images an empty alt="" instead of omitting the attribute, so assistive technology knows to skip them rather than reading out the filename.
8 passing checks
- Single H1 heading1 h1 found: "ความรู้สุขภาพที่เชื่อถือได้ ตรวจสอบโดยทีมบรรณาธิการ"
- Heading hierarchy7 headings in order without skipped levels
- Word count679 words of visible text
- Structured data (JSON-LD)JSON-LD types found: WebSite, Organization
- Hreflang annotations5 valid hreflang link(s) including x-default
- HTML lang attribute<html lang="th-TH">
- JavaScript-dependent contentvisible text ~1905 chars in the initial HTML
- Internal linking40 internal, 0 external links
Technical
17.6/25
HTTPS, redirects, robots, sitemap, speed, crawlability.
Fast time to first bytehigh impactmedium effort
1603 ms
Time to first byte is the floor under every other speed metric — the browser can't parse, render, or fetch anything until the first byte arrives, so a slow TTFB drags down all Core Web Vitals and tests crawlers' patience. Add caching in front of the origin: full-page caching at a CDN (Cloudflare, Fastly) helps most, followed by server-side caches (Redis, object caching) and indexes on slow database queries. Measure from locations near your actual users — tuning only your fastest region leaves distant visitors just as slow.
HTTP redirects to HTTPSmedium impactlow effort
http:// version serves content without redirecting
Your http:// URLs serve content instead of redirecting, so search engines can crawl and index two parallel copies of every page and split ranking signals between them. Add a permanent 301 redirect from http to https at the server or CDN level — in nginx, "return 301 https://$host$request_uri;" in the port-80 server block; in Apache, a RewriteRule in .htaccess; on Cloudflare, enable "Always Use HTTPS". Use a 301, not a 302 — temporary redirects don't consolidate ranking signals — and preserve the full path in the redirect target.
Short redirect chainmedium impactlow effort
https://sympdocu.com/ (308) → https://www.sympdocu.com/ (307) → https://www.sympdocu.com/th
Every redirect hop adds a round-trip before the visitor sees anything, each hop can leak a little link equity, and crawlers abandon long chains — which can leave the destination page undiscovered. Trace the chain above and point the first URL directly at the final destination in a single 301; commonly this means merging separate http-to-https and non-www-to-www rules into one combined redirect. Also update internal links to reference the final URL directly, so most visitors never enter the chain at all.
XML sitemap availablemedium impactlow effort
sitemap.xml is valid but robots.txt does not reference it
Your sitemap is valid, but robots.txt never mentions it, so crawlers you haven't manually notified may never find it — the robots.txt reference is the universal discovery mechanism. Add one line to robots.txt: "Sitemap: https://www.example.com/sitemap.xml", using the full absolute URL (a relative path is invalid here). The line can go anywhere in the file, and you can list several sitemaps. Also submit it in Google Search Console to get indexing-coverage reporting on top of discovery.
Response compression enabledlow impactlow effort
no content-encoding header
This HTML is served uncompressed, so every visitor downloads far more bytes than necessary — text compresses extremely well, and the savings directly speed up first render on slow connections. Enable Brotli or gzip on your server or CDN: in nginx it's "gzip on;" (or the brotli module), in Apache it's mod_deflate via .htaccess, and on most CDNs it's a single toggle. Make sure compression covers all text types (HTML, CSS, JS, JSON, SVG), but skip already-compressed images — recompressing them wastes CPU for no gain.
7 passing checks
- Served over HTTPSfinal URL uses https://
- No mixed content0 http:// subresource references
- robots.txt present and permissiverobots.txt exists and allows crawling
- Reasonable HTML size58.2 KB
- Missing pages return 404missing paths return HTTP 404/410
- www and non-www resolve consistentlywww and non-www converge on the same host
- HTML5 doctype<!DOCTYPE html> present
Performance
Core Web Vitals scoring via Google PageSpeed is coming soon.
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