https://blog.afro.co.ke
Performance
· 22 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.SCORE
98
GRADE
A+
FIX
0
REVIEW
1
PASS
18
INFO
3
Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
100
85
92
100
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
449 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
556 ms
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
0 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.001
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
449 ms
Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.
556 ms
Page Load Progression
375 ms 750 ms 1.1 s 1.5 s 1.9 s 2.2 s 2.6 s 3.0 sChecks
2218 PASS 1 REVIEW
BHTTP Cachingpublic, max-age=0, must-revalidateREVIEW
HTTP Caching
public, max-age=0, must-revalidate
public, max-age=0, must-revalidate
Info::
Cache-Control header is set
Got: public, max-age=0, must-revalidate
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control
public, max-age=0, must-revalidate
| Directive | Value | Meaning |
|---|---|---|
| public | — | Any cache may store this response |
| max-age | 0 | Cache for 0 seconds |
| must-revalidate | — | Must recheck with server after expiry |
A+Page Weight Budget365 KB transferred, 27 requestsPASS
Page Weight Budget
365 KB transferred, 27 requests
365 KB transferred, 27 requests
Info::
Page weighs 436 KB (365 KB transferred)
Info::
27 HTTP requests
Info::
Estimated 0.07 g CO2 per page load
365 KB transferred
27 requests
0.07 g CO2 per page load
Images 278.1 KiB 76%
Fonts 57.2 KiB 16%
CSS 11.0 KiB 3%
HTML 7.4 KiB 2%
JavaScript 6.7 KiB 2%
Other 2.9 KiB 1%
Other 1.1 KiB 0%
Other 380 B 0%
0 2.4 MB 4.9 MB
Under budget
A+Third-Party Impact1% third-party, 0 ms blockingPASS
Third-Party Impact
1% third-party, 0 ms blocking
1% third-party, 0 ms blocking
Info::
Third-party code accounts for 1% of page weight (3.7 KiB of 364.8 KiB)
Info::
Third-party blocking time is low (0 ms)
99%
First-party Third-party
A+Text CompressionAll text resources are compressedPASS
Text Compression
All text resources are compressed
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A+Image Optimization15 images, 0 KB saveablePASS
Image Optimization
15 images, 0 KB saveable
15 images, 0 KB saveable
Info::
All images are well-optimized
15 images 278 KB
0 oversized -0 KB
0 legacy format
0 missing dimensions CLS risk
A+JS Execution Cost145ms total JS executionPASS
JS Execution Cost
145ms total JS execution
145ms total JS execution
Info::
https://blog.afro.co.ke/: 91ms CPU time
Info::
Unattributable: 55ms CPU time
Main Thread Breakdown
Other 42% Style & Layout 32% Rendering 12% Script Evaluation 10% Parse HTML & CSS 4%
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://blog.afro.co.ke/ | 91ms | 4ms | 0ms | 1st |
| Unattributable | 55ms | 2ms | 0ms | 1st |
A+Font Loading3 fonts (57 KB)PASS
Font Loading
3 fonts (57 KB)
3 fonts (57 KB)
Info::
3 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
3
57 KB total
Render-blocking
0
of 3
Dominant font-display
swap
Most common across fonts
Font loading timeline
Transfer FOIT (block) FOUT (swap)
inter-latin-400-normal.... woff2 swap
Size 24 KB
Load time 81 ms
Start 141 ms
Risk FOUT — text flashes from fallback to web font
cookie-latin-400-normal... woff2 swap
Size 15 KB
Load time 39 ms
Start 141 ms
Risk FOUT — text flashes from fallback to web font
inter-latin-700-normal.... woff2 swap
Size 18 KB
Load time 65 ms
Start 141 ms
Risk FOUT — text flashes from fallback to web font
Optimization checklist
- Preload critical fonts (priority=high)
- Use woff2 format for all fonts
- Set font-display to swap, optional, or fallback
- Subset large fonts (≤100 KB each)
A+JS Bundles4 scripts, 0 KB unusedPASS
JS Bundles
4 scripts, 0 KB unused
4 scripts, 0 KB unused
0 KB unused JavaScript
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://blog.afro.co.ke/js/theme.7db1c91609389fac7f75370031b99c095b6085722d1edce631d74be182a92341.js | 2 KB | — | ✓ | 1st |
| https://blog.afro.co.ke/js/main.48cb69ff329aa4fa1e8ee43c0124eb795a53cab30ffe68f2b22fff21d74c5c35.js | 2 KB | — | ✓ | 1st |
| https://gc.zgo.at/count.js | 3 KB | — | ✓ | 3rd |
| https://static.cloudflareinsights.com/beacon.min.js/v833ccba57c9e4d2798f2e76cebdd09a11778172276447 | 0 KB | — | ✓ | 3rd |
A+Resource CachingAll resources properly cachedPASS
Resource Caching
All resources properly cached
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+Critical Rendering PathNo render-blocking resourcesPASS
Critical Rendering Path
No render-blocking resources
No render-blocking resources
Info::
No render-blocking resources detected
A+Resource HintsNo optimization neededPASS
Resource Hints
No optimization needed
No optimization needed
Info::
No resource hint issues
A+HTTP/3 (QUIC)HTTP/3 advertised via Alt-SvcPASS
HTTP/3 (QUIC)
HTTP/3 advertised via Alt-Svc
HTTP/3 advertised via Alt-Svc
Info::
HTTP/3 (QUIC) is supported
First-load mobile users on cellular networks see meaningful latency improvements with HTTP/3. The QUIC transport collapses TLS + TCP handshakes into one and recovers faster from packet loss.
A+Compression AlgorithmMain response uses brotliPASS
Compression Algorithm
Main response uses brotli
Main response uses brotli
Info::
Main HTML response uses brotli (Content-Encoding: br)
Brotli is the best text-compression algorithm for general use, ~20% smaller than gzip on average (40% on smaller files). Modern browsers all support it.
A+LCP Image PreloadLCP preload audit not availablePASS
LCP Image Preload
LCP preload audit not available
LCP preload audit not available
Info::
LCP image preload audit not available for this scan
A+Main HTML Cache-ControlMain HTML max-age=0 (≤ 5min) is appropriatePASS
Main HTML Cache-Control
Main HTML max-age=0 (≤ 5min) is appropriate
Main HTML max-age=0 (≤ 5min) is appropriate
Info::
Main HTML max-age=0 (≤ 5min) is appropriate
Got: public, max-age=0, must-revalidate
A+Server-Timing Observability3 Server-Timing entries advertisedPASS
Server-Timing Observability
3 Server-Timing entries advertised
3 Server-Timing entries advertised
Info::
Server-Timing header advertises 3 timing entries
AServer Response Intelligence2 server-response signal(s) detectedPASS
Server Response Intelligence
2 server-response signal(s) detected
2 server-response signal(s) detected
Warning::
Compressed response missing `Vary` header
The page is served with `Content-Encoding: br` but has no `Vary` header. Without `Vary: Accept-Encoding`, intermediary caches (corporate proxies, ISP caches) may serve the compressed variant to clients that didn't send the matching `Accept-Encoding` -- the client sees garbled bytes. Add `Vary: Accept-Encoding` whenever the response is conditionally compressed.
Info::
No `ETag` or `Last-Modified` -- conditional GET not supported
Without either header, browsers can't issue conditional GETs and refresh always re-downloads the full response body even when nothing changed. Add `ETag: "<hash>"` (or `Last-Modified: <date>`) on cacheable responses; the server returns 304 Not Modified when the client's cached copy is still valid, saving bandwidth.
A+Page Weight Inventory27 resources · 365 KB · 0 KB savings availablePASS
Page Weight Inventory
27 resources · 365 KB · 0 KB savings available
27 resources · 365 KB · 0 KB savings available
Info::
Within 1MB page-weight target
Got: 365 KB
Info::
3 third-party resources (1% of weight)
27 resources · 364.8 KiB · 3 third-party Within 1MB page-weight target
Image 77% · 281.4 KiB
Font 16% · 57.2 KiB
CSS 3% · 11.0 KiB
Document 2% · 7.4 KiB
JavaScript 2% · 6.7 KiB
Other 0% · 1.1 KiB
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 27 resources | 364.8 KiB | ||||||
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
Whether the site is served from green-energy infrastructure
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
Network Waterfall27 requests over 684msINFO
Network Waterfall
27 requests over 684ms
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Real-User Performance (CrUX)Field metrics from the Chrome User Experience ReportINFO
Real-User Performance (CrUX)
Field metrics from the Chrome User Experience Report
Chrome User Experience (CrUX)
Real-user metrics from the Chrome UX Report (2026-04-17 — 2026-05-14)
LCP (p75)
1435 ms
90% good
INP (p75)
78 ms
95% good
CLS (p75)
0.000
99% good
FCP (p75)
1419 ms
TTFB (p75)
844 ms
This origin passes Core Web Vitals assessment
Image Optimization28 images, 159 KB total, 0 KB wastedINFO
Image Optimization
28 images, 159 KB total, 0 KB wasted
Image Optimization Audit
Total Images
28
Total Size
159 KB
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.