The background of the experiment

After completing the multi-round optimization of WordPress, I made a key adjustment to the site:

• Old theme: Hueman
• New Topic: Twenty Twenty-Five (WordPress 2025 official theme)

Site size:

• About 2000+ articles
• 18,000+ tags
• Chinese + English bilingual structure

Target of this test:

Quantize the impact of topic switching on website performance and establish baseline data for subsequent CDN launches.

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2. Old theme Hueman performance (baseline data)

🌐 Domestic Dial (BOCE)

📊 Core data:

• Average response time:4.493s
• Fastest node: 0.07s
• Slowest node: 10s
• Telecom Average: 4.359s
• Moving Average: 5.198s
• Unicom average: 3.833s

👉 Features:

• Significant difference between operators
• 10-second latency of access in some areas

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🌍 Overseas Visit (WebPageTest)

📊 Core metrics:

• ttfb:1.499s
• FCP: 2.706s
• LCP: 3.106s
• CLS: 0.127
• SPEED INDEX: 3.353
• Fully loaded: 12.73s
• Number of requests: 101

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🧠 Problem analysis:

1️⃣ High number of requests (101)

→ Too many resources are split

2️⃣ LCP High (3.1s)

→ The first screen rendering is slower

3️⃣ Long load time (12.7s)

→ JS/CSS/ font link longer

For more data, please refer to:WordPress Performance Benchmark and CDN Selection Record: From Domestic Dial to Overseas WebpageTest, how 1-core 2G server is global

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3. New theme Twenty Twenty-Five performance

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📸 Figure 1: BOCE national speed test results

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📊 Domestic visit performance:

• Average response:4.78s
• Telecom: 4.24s
• Mobile: 4.81s
• Unicom: 5.31s
• Slowest node: 10s

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🧠 Interpretation:

• The whole country is still affected by the network structure
• Theme optimization has limited impact on domestic networks

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Figure 3: Overview of WebPageTest

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🌍 Core metrics:

• ttfb:0.668s
• FCP: 2.053s
• LCP: 2.261s
• CLS: 0.066
• Speed Index: 2.353
• Total Load: 8.601s
• Number of requests: 76

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🧠 Analyze:

✔ TTFB (0.668s)

→ Entered the excellent section (<1s)

✔ LCP (2.26s)

→ Up to Google Recommended (<2.5s)

✔ CLS (0.066)

→ Excellent page layout stability

✔ Decrease in the number of requests (101 → 76)

→ The theme structure is significantly lighter

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Figure 4: Request Table Analysis

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🧩 Resource structure changes:

• Decrease in CSS quantity
• js calls are reduced
• Font loading is more concentrated
• The image loading path is clearer

👉 Description:

The page resource link has been significantly optimized

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🌊 Network loading path analysis (based on request table)

This analysis is based on the request table for resource loading path restoration:

• HTML first byte save 0.7s
• CSS/JS parallel loading
• There is a time-consuming independent connection of font resources
• Image resource loading is scattered
• Total request link about 70–100 resources

👉 Conclusion:

Page performance bottlenecks are mainly focused on ‘number of resources + network round trip’, rather than server processing capacity

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Four, Hueman vs Twenty Twenty-Five comparison

Index	hueman	Twenty Twenty-Five	Variety
ttfb	1.499s	0.668s	🔽 Significantly optimized
LCP	3.106s	2.261s	🔽 Clearly optimized
CLS	0.127	0.066	🔽 more stable
Load time	12.73s	8.60s	🔽 Greatly optimized
requests	101	76	🔽 25% reduced
speed index	3.35	2.35	🔽 faster

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The core conclusion

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🧠 1️⃣ The theme optimization effect is obvious

From Hueman → Twenty Twenty-Five:

• The first screen loads faster
• Reduced number of requests
• Rendering path is shorter
• The page structure is lighter

👉 Conclusion:

WordPress official 2025 theme is significantly better than older themes Hueman

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🧠 2️⃣ The current bottleneck has changed

Before optimization:

Server Performance + Theme Structure Issues

After optimization:

🌍 Network Distribution + Global Access Delay Issues

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🧠 3️⃣ CDN online necessity judgment

Current status:

✔ Optimized part:

• TTFB has been excellent
• LCP has reached the standard
• CLS has been excellent

❗ Unresolved problems:

• Overseas load time still 8s+
• Domestic cross-operator fluctuations are large
• Resources are still all returned to the source

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👉 Conclusion:

CDN has entered the ‘necessary stage’ rather than ‘optional optimization’

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6. CDN Next experimental plan

This data as:

📌 CDN pre-launch baseline data (Baseline)

The next step will proceed:

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🚀 Step 1: Access Cloudflare CDN

• DNS switching
• static resource cache
• bypass wp-admin

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🚀 Step 2: Repeat the test

Stay exactly the same:

• same page
• Same WebPageTest node (OHIO)
• Same Boce Configuration

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🚀 Step 3: Comparative analysis

Highlights:

• Does TTFB drop?
• Is LCP improved?
• Whether the domestic is affected
• Fully loaded

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7. Tool description (optional affiliate marketing points)

Tools used for this test:

• webpagetest(Overseas real browser simulation)
• BOCE website speed measurement(Domestic multi-node dial test)

👉 The CDN plan involves:

• cloudflare(to be verified online)

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8. Summary

This test completes a key stage of WordPress optimization:

✔ The theme optimization has been completed
✔ Performance bottleneck has shifted from ‘server/theme’ to ‘cdn distribution’

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🧠 Summary in one sentence

The front-end performance of WordPress has entered a stable stage, and the next step is to optimize the CDN and global distribution network.