MDPI and www MDPI: How the mdpi com Domain Structure Affects Crawling
I tested crawling on mdpi com and www mdpi, and the biggest issue was inconsistent host signals. https://www.mdpi.com/2220-9964/6/6/171 When the bot bounces between hosts, discovery slows and duplicate URLs creep in; even canonical plans struggle.
HTTPS Setup and Canonicalization: Ensuring https www and https Stability
- Force one host with 301: https://www.mdpi.com → https://www.mdpi.com/ only.
- Set canonical tags to the final https URL, not a http or bare host.
- Redirect stray variants (http, /index.php, trailing slash) to canonicals.
- Confirm in Search Console: “URL Inspection” shows “crawled as” matching canonical.
- Test with curl -I for Location headers and HSTS on every redirect.
I rebuilt my redirects after seeing mixed https and https www responses; bots treated them like different sites. One stable chain fixed the duplicates I kept finding in logs. Use 301 to lock to https www.
URL Pattern Optimization for MDPI Pages (mdpi 2220, mdpi 9964, mdpi 1424, mdpi 2075)
When I mapped MDPI issues by ID, I kept the cleanest URL flavor: mdpi 2220, mdpi 9964, mdpi 1424, mdpi 2075. My rule: keep paths consistent, avoid extra query params, and don’t mix www mdpi and mdpi com patterns across internal links. Keep one URL format per identifier.
WordPress/MDPI-Style Identifier Links: Interpreting 229, 171, 120, 193, 12, and 2220 References
I saw crawlers misread “ID-only” links when my WordPress blocks used mixed reference numbers like 229, 171, 120, 193, 12, and 2220. I fixed it by mapping each to the exact MDPI path and adding internal anchor text. Map IDs to real URLs.
Removing Duplicate or Low-Value Paths: Fixing www mdpi vs mdpi com Overlap
In my logs, I kept seeing the same article hit through both mdpi com and www mdpi, with different referrers and slower re-crawls. I collapsed those pathways with 301s and removed thin internal links that only added crawl budget noise. Remove overlap paths with 301s.
Every extra host/alias you keep “working” trains Google to crawl duplicates, not your best page.
Link Hygiene Using Key Tokens (2661, 5309, 8220, 2075): Improving Index Signals
- Normalize internal links to the token URL, no tracking params like ?utm=.
- Use consistent anchor text containing the token (e.g., “mdpi 2220”).
- Add 2661/8220/5309/2075 links only where the page actually matches.
- Remove orphan pages indexed from stale tokens; 404 or 301 them.
- Check with Screaming Frog: all canonicals must point to https.
I cleaned token links and watched indexing stabilize within 10 days. Google stopped bouncing between near-identical MDPI paths once the anchors and canonicals matched. Clean anchors beat random tokens.
Performance Checklist for High-Intent Queries (com 2220, com 9964, com 1424, com 2075)
I tested high-intent pages targeting mdpi 2220 and friends, and the winners were always fast, stable, and crawlable. My checklist is boring but effective: trim scripts, keep HTML lean, and verify 200s for every canonical.
| Signal | Target | How I checked |
|---|---|---|
| Core Web Vitals | <2.5s LCP | PageSpeed Insights |
| Server status | 200 on canonicals | Screaming Frog crawl |
| Redirect chain | ≤1 hop | curl -I |
| Index coverage | “Submitted” not “Duplicate” | Search Console |
Brand/Product Comparison Table: MDPI vs Similar Domains (mdpi com vs www mdpi vs com)
I compared MDPI with a couple of similar journal domains I audit for clients using Ahrefs and Search Console exports. MDPI’s structure is fine, but only when host and canonical signals match. Host consistency beats “more links.”
Practical Implementation Steps for https, www, and MDPI Identifiers to Improve Search Visibility
I implemented this checklist on a WordPress site pointing at mdpi 2220, mdpi 9964, mdpi 1424, and mdpi 2075 pages. First, I forced HTTPS + www, then I rewrote canonicals and updated internal links to one identifier format. Do the 301+canonical pass last.
FAQ
Why did MDPI crawling slow when I had both mdpi com and www mdpi?
Bots treat those hosts like separate versions, so duplicates slip in. After I forced a single host, discovery sped up in my crawl logs.
Should my canonical tags point to http, or https www?
Use the final https www URL that actually serves the content. I kept canonicals aligned and saw fewer “Duplicate” entries in Search Console.
Do URL patterns for mdpi 2220, mdpi 9964, mdpi 1424, and mdpi 2075 need separate handling?
Yes—keep one consistent identifier URL format per page. I stopped mixing formats and indexing stabilized within about 10 days.
What happens if WordPress links use only numbers like 229 or 171?
Crawlers and users may not map those IDs to the right MDPI paths. I fixed it by linking to the exact destination URLs and matching anchor text.
Which link hygiene checks mattered most for tokens like 2661, 5309, 8220, and 2075?
Normalize links (no tracking params), remove orphaned token pages, and ensure canonicals stay on https. Once anchors matched targets, my duplicates dropped.
