Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
C
Image Optimization
Action
81 images, 0 KB saveable
REVIEW
81 images, 0 KB saveable
Warning::
!
https://static.pib.gov.in/WriteReadData/RelatedLin... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://static.pib.gov.in/WriteReadData/RelatedLin... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.pib.gov.in/images/blog_icon.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.pib.gov.in/images/sitemap.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.pib.gov.in/images/media-icon.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.pib.gov.in/images/infographics-icon.pn... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://static.pib.gov.in/WriteReadData/RelatedLin... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://static.pib.gov.in/WriteReadData/specificdo... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://static.pib.gov.in/WriteReadData/RelatedLin... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://static.pib.gov.in/WriteReadData/specificdo... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.pib.gov.in/images/prime-minister.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://static.pib.gov.in/WriteReadData/RelatedLin... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.pib.gov.in/images/most_viewed.png?v=1 is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.pib.gov.in/images/handicape-icon.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.pib.gov.in/images/theme.png?v=1 is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.pib.gov.in/images/search.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://static.pib.gov.in/WriteReadData/RelatedLin... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.pib.gov.in/images/indian-emblem.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://static.pib.gov.in/WriteReadData/specificdo... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://newindiasamachar.pib.gov.in/NISCMS/WriteRe... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.pib.gov.in/images/e-book.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://static.pib.gov.in/WriteReadData/specificdo... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://static.pib.gov.in/WriteReadData/RelatedLin... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.pib.gov.in/images/shadow-banner.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://static.pib.gov.in/WriteReadData/specificdo... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://static.pib.gov.in/WriteReadData/Banner/202... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://static.pib.gov.in/WriteReadData/RelatedLin... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.pib.gov.in/images/ios.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
81images3.6 MB
0oversized-0 KB
77legacy format
28missing dimensionsCLS risk
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW
Green Hosting
No green hosting detected
A+
Text Compression
All text resources are compressed
PASS
All text resources are compressed
Info::
✓
All text resources are compressed
All text resources are properly compressed.
A+
Font Loading
6 fonts (297 KB)
PASS
6 fonts (297 KB)
Info::
i
6 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
6
297 KB total
Render-blocking
0
of 6
Dominant font-display
swap
Most common across fonts
Font loading timeline
TransferFOIT (block)FOUT (swap)
Aparajita-Bold.woffwoffswap
Size115 KB
Load time265 ms
Start3.7 s
RiskFOUT — text flashes from fallback to web font
Convert to woff2 for ~30% smaller file size
Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
fontawesome-webfont.woffwoffswap
Size96 KB
Load time29 ms
Start3.7 s
RiskFOUT — text flashes from fallback to web font
Convert to woff2 for ~30% smaller file size
swiper-icons.ttfttfswap
Size1 KB
Load time420 ms
Start3.7 s
RiskFOUT — text flashes from fallback to web font
Convert to woff2 for ~30% smaller file size
KFO7CnqEu92Fr1ME7kSn66a...woff2swap
Size34 KB
Load time66 ms
Start3.9 s
RiskFOUT — text flashes from fallback to web font
Oswald-Regular.woffwoffswap
Size28 KB
Load time23 ms
Start4.0 s
RiskFOUT — text flashes from fallback to web font
Convert to woff2 for ~30% smaller file size
glyphicons-halflings-re...woffswap
Size23 KB
Load time20 ms
Start4.5 s
RiskFOUT — text flashes from fallback to web font
Convert to woff2 for ~30% smaller file size
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)
Fixing the unchecked items could save ~136 KB and ~272 ms
A+
Resource Caching
All resources properly cached
PASS
All resources properly cached
Info::
✓
No caching issues found
All static resources have appropriate caching headers.
A+
Critical Rendering Path
No render-blocking resources
PASS
No render-blocking resources
Info::
✓
No render-blocking resources detected
A+
Resource Hints
No optimization needed
PASS
No optimization needed
Info::
✓
No resource hint issues
A+
Render-Blocking Resources
No render-blocking resources detected
PASS
No render-blocking resources detected
Info::
✓
No render-blocking resources detected in <head>
A+
Third-Party Resources
No third-party resources detected
PASS
No third-party resources detected
Network Waterfall
165 requests over 7569ms
INFO
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
100%of JavaScript execution is third-party
First-party Third-party7771ms · 924KB · ₹1150/mo
Script
Category
Execution
Transfer
Unused
Monthly Cost
Verdict
www.pib.gov.in
www.pib.gov.in
Other
2611ms
91 KB
—
₹386/mo
Costly
www.pib.gov.in
www.pib.gov.in
Other
1502ms
48 KB
47%
₹222/mo
Costly
Unattributable
Unattributable
Other
1323ms
0 KB
—
₹196/mo
Costly
Google Tag Manager
www.googletagmanager.com
Tag Manager
382ms
146 KB
45%
₹57/mo
Costly
s.go-mpulse.net
s.go-mpulse.net
Other
328ms
0 KB
73%
₹49/mo
Costly
Google Tag Manager
www.googletagmanager.com
Tag Manager
312ms
146 KB
43%
₹46/mo
Costly
static.pib.gov.in
static.pib.gov.in
Other
292ms
73 KB
47%
₹43/mo
Costly
Google Tag Manager
www.googletagmanager.com
Tag Manager
260ms
125 KB
52%
₹38/mo
Costly
Facebook Pixel
connect.facebook.net
Advertising
232ms
78 KB
65%
₹34/mo
Costly
Google Analytics
www.google-analytics.com
Analytics
165ms
21 KB
—
₹24/mo
Optional
chromewebdata
chromewebdata
Other
115ms
0 KB
—
₹17/mo
Optional
Google Tag Manager
www.googletagmanager.com
Tag Manager
92ms
125 KB
74%
₹14/mo
Optional
static.pib.gov.in
static.pib.gov.in
Other
87ms
30 KB
—
₹13/mo
Optional
www.pib.gov.in
www.pib.gov.in
Other
71ms
41 KB
66%
₹10/mo
Optional
www.pib.gov.in
Other
Costly
Execution2611ms
Transfer91 KB
Monthly Cost₹386/mo
www.pib.gov.in
Other
Costly
Execution1502ms
Transfer48 KB
Unused47%
Monthly Cost₹222/mo
Unattributable
Other
Costly
Execution1323ms
Transfer0 KB
Monthly Cost₹196/mo
Google Tag Manager
Tag Manager
Costly
Execution382ms
Transfer146 KB
Unused45%
Monthly Cost₹57/mo
s.go-mpulse.net
Other
Costly
Execution328ms
Transfer0 KB
Unused73%
Monthly Cost₹49/mo
Google Tag Manager
Tag Manager
Costly
Execution312ms
Transfer146 KB
Unused43%
Monthly Cost₹46/mo
static.pib.gov.in
Other
Costly
Execution292ms
Transfer73 KB
Unused47%
Monthly Cost₹43/mo
Google Tag Manager
Tag Manager
Costly
Execution260ms
Transfer125 KB
Unused52%
Monthly Cost₹38/mo
Facebook Pixel
Advertising
Costly
Execution232ms
Transfer78 KB
Unused65%
Monthly Cost₹34/mo
Google Analytics
Analytics
Optional
Execution165ms
Transfer21 KB
Monthly Cost₹24/mo
chromewebdata
Other
Optional
Execution115ms
Transfer0 KB
Monthly Cost₹17/mo
Google Tag Manager
Tag Manager
Optional
Execution92ms
Transfer125 KB
Unused74%
Monthly Cost₹14/mo
static.pib.gov.in
Other
Optional
Execution87ms
Transfer30 KB
Monthly Cost₹13/mo
www.pib.gov.in
Other
Optional
Execution71ms
Transfer41 KB
Unused66%
Monthly Cost₹10/mo
These scripts may cost more than they're worth
www.pib.gov.in adds 2611ms and costs ~₹386/month
www.pib.gov.in adds 1502ms and costs ~₹222/month
Unattributable adds 1323ms and costs ~₹196/month
Google Tag Manager adds 382ms and costs ~₹57/month
s.go-mpulse.net adds 328ms and costs ~₹49/month
Google Tag Manager adds 312ms and costs ~₹46/month
static.pib.gov.in adds 292ms and costs ~₹43/month
Google Tag Manager adds 260ms and costs ~₹38/month
Facebook Pixel adds 232ms and costs ~₹34/month
100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.
Why this matters
When third-party JS execution time exceeds your own, performance gains from frontend work are capped by code you don't own.
Learn more ▾▴
Every millisecond of third-party JS competes with your own for main-thread time. If their share is bigger than yours, optimization on your code base barely moves the needle. Audit, defer, or remove third-parties before further frontend optimization. Use Lighthouse's third-party audit to identify the worst offenders.
Source: web.dev
www.pib.gov.in takes 2611ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
Why this matters
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
www.pib.gov.in takes 1502ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
Why this matters
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Unattributable takes 1323ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
Why this matters
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Google Tag Manager takes 382ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
Why this matters
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
s.go-mpulse.net takes 328ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
Why this matters
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
73% of s.go-mpulse.net's code is unused. The script may be loading features you don't use.
Why this matters
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
Google Tag Manager takes 312ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
Why this matters
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
static.pib.gov.in takes 292ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
Why this matters
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Google Tag Manager takes 260ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
Why this matters
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
52% of Google Tag Manager's code is unused. The script may be loading features you don't use.
Why this matters
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
Facebook Pixel takes 232ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
Why this matters
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
65% of Facebook Pixel's code is unused. The script may be loading features you don't use.
Why this matters
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
74% of Google Tag Manager's code is unused. The script may be loading features you don't use.
Why this matters
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
66% of www.pib.gov.in's code is unused. The script may be loading features you don't use.
Why this matters
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.