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https://ornl.gov

Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
71
GRADE
C
FIX
5
REVIEW
3
PASS
5
INFO
2

Performance-focused optimization plan with CWV assessment, top offenders, and time estimates

75
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
95
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
96
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
92
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

1.15 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

4.41 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

8 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.035

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

1.39 s

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

4.77 s

Page Load Progression

375 ms
750 ms
1.1 s
1.5 s
1.9 s
2.2 s
2.6 s
3.0 s
Checks
15
5 PASS 3 REVIEW 5 FIX
F
Page Weight Budget
Action
12.1 MB transferred, 64 requests
FIX
12.1 MB transferred, 64 requests
Critical::
Page weighs 14.4 MB (12.1 MB transferred)
Warning::
Images are 10.9 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 10.9 MB
Warning::
JavaScript is 968 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 968 KB
Info::
64 HTTP requests
Info::
Estimated 2.5 g CO2 per page load
12.1 MB / 2.4 MB budget
12.1 MB transferred
64 requests
2.5 g CO2 per page load
Images 10.9 MiB 90%
JavaScript 967.6 KiB 8%
Fonts 188.8 KiB 2%
CSS 58.8 KiB 0%
HTML 16.4 KiB 0%
Other 6.3 KiB 0%
Other 1.1 KiB 0%
Other 752 B 0%
Other 556 B 0%
Other 396 B 0%
0 2.4 MB 4.9 MB
Over budget

Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.

Why this matters

Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.

Source: web.dev

Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.

Why this matters

JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.

Source: web.dev

D
Third-Party Impact
Action
100% third-party, 0 ms blocking
FIX
100% third-party, 0 ms blocking
Warning::
Third-party code accounts for 100% of page weight (12.1 MiB of 12.1 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
JS Bundles
Action
22 scripts, 314 KB unused
FIX
22 scripts, 314 KB unused
Warning::
https://www.googletagmanager.com/gtag/js?id=G-CSLL...: 106 KB unused (72%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-CSLL...: 63 KB unused (43%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-N5V...: 62 KB unused (52%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-TGYF...: 62 KB unused (39%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://static.addtoany.com/menu/modules/core.ydpp...: 21 KB unused (82%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 314 KB
314 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L&cx=c&gtm=4e64h1147 KB106 KB (72%)3rd
https://www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L147 KB63 KB (43%)3rd
https://www.googletagmanager.com/gtm.js?id=GTM-N5VHQ6M2119 KB62 KB (52%)3rd
https://www.googletagmanager.com/gtag/js?id=G-TGYF36HYE6&cx=c&gtm=4e64h1158 KB62 KB (39%)3rd
https://static.addtoany.com/menu/modules/core.ydpp7jcu.js26 KB21 KB (82%)3rd
https://cdnjs.cloudflare.com/ajax/libs/ScrollMagic/2.0.7/ScrollMagic.min.js6 KB3rd
https://siteimproveanalytics.com/js/siteanalyze_6024880.js21 KB3rd
https://www.ornl.gov/sites/default/files/js/js_pEyWYYs2P5YOe8P2DrIpwusHJSXaJiPqURmaqoC0ST8.js?scope=footer&delta=7&language=en&theme=ornl&include=eJxNy0EOgCAMRNELiZzDU5gqFWugxVJNuL0kunA3_yUDIZgANw_fGDcVtkGUk49JFkiuWkvE8TXKENGtUIyE62vHeaE2t8uNOrFh_1cynCkX7eb_8QDUrSyU1 KB3rd
https://use.fontawesome.com/releases/v5.0.8/js/all.js247 KB3rd
https://www.ornl.gov/sites/default/files/js/js_f57zbLLLi7ZM3iIXOVkARtNNsYejqHS3_LQvPHWbm4U.js?scope=footer&delta=9&language=en&theme=ornl&include=eJxNy0EOgCAMRNELiZzDU5gqFWugxVJNuL0kunA3_yUDIZgANw_fGDcVtkGUk49JFkiuWkvE8TXKENGtUIyE62vHeaE2t8uNOrFh_1cynCkX7eb_8QDUrSyU1 KB3rd

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

D
Page Weight Inventory
Action
64 resources · 12.1 MB · 314 KB savings available
FIX
64 resources · 12.1 MB · 314 KB savings available
Warning::
Page weight 11.1 MB over 1MB target
Got: 12.1 MB Expected: ≤ 1 MB
Info::
~314 KB of savings available
Warning::
63 third-party resources (100% of weight)
Info::
9 resources over 200KB
64 resources · 12.1 MiB · 63 third-party 11.1 MiB over 1MB target
Image 90% · 10.9 MiB
JavaScript 8% · 967.6 KiB
Font 2% · 188.8 KiB
CSS 0% · 58.8 KiB
Document 0% · 16.4 KiB
Other 0% · 2.9 KiB

~313.6 KiB of savings available

Remove unused JavaScript: 313.6 KiB
F
HTTP Caching
Action
No cache headers
FIX
No cache headers
Warning::
No Cache-Control header found
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
19 images, 0 KB saveable
REVIEW
19 images, 0 KB saveable
Warning::
https://www.ornl.gov/themes/custom/ornl/images/orn... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.ornl.gov/themes/custom/ornl/images/bat... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.ornl.gov/themes/custom/ornl/images/doe... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
19 images 10.9 MB
0 oversized -0 KB
19 legacy format
3 missing dimensions CLS 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

B
JS Execution Cost
631ms total JS execution
REVIEW
631ms total JS execution
Info::
https://www.ornl.gov/: 229ms CPU time
Info::
Unattributable: 202ms CPU time
Info::
https://www.googletagmanager.com/gtag/js?id=G-CSLL...: 72ms CPU time
Info::
https://www.googletagmanager.com/gtag/js?id=G-TGYF...: 69ms CPU time
Info::
https://www.googletagmanager.com/gtm.js?id=GTM-N5V...: 59ms CPU time
Warning::
Third-party scripts: 631ms (100% of total)

Main Thread Breakdown

Script Evaluation 36% Other 25% Style & Layout 22% Script Parsing & Compilation 12%
ScriptTotalScriptingParse/CompileParty
https://www.ornl.gov/229ms4ms1ms3rd
Unattributable202ms30ms0ms3rd
https://www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L72ms59ms13ms3rd
https://www.googletagmanager.com/gtag/js?id=G-TGYF36HYE6&cx=c&gtm=4e64h169ms53ms15ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-N5VHQ6M259ms47ms11ms3rd
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
7 fonts (189 KB)
PASS
7 fonts (189 KB)
Info::
7 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

7

189 KB total

Render-blocking

0

of 7

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 1.0 s 2.0 s 3.0 s 4.0 s FCP 1.2 s LCP 4.4 shttps://fonts.gstatic.com/s/roboto/v51/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2KFO7CnqEu92Fr1ME7kSn66a... https://fonts.gstatic.com/s/roboto/v51/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2 — 36.7 KiB — 43 ms — font-display: swaphttps://fonts.gstatic.com/s/opensans/v44/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTS-mu0SC55I.woff2memvYaGs126MiZpBA-UvWbX... https://fonts.gstatic.com/s/opensans/v44/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTS-mu0SC55I.woff2 — 42.0 KiB — 25 ms — font-display: swaphttps://fonts.gstatic.com/s/lato/v25/S6u9w4BMUTPHh6UVSwiPGQ3q5d0.woff2S6u9w4BMUTPHh6UVSwiPGQ3... https://fonts.gstatic.com/s/lato/v25/S6u9w4BMUTPHh6UVSwiPGQ3q5d0.woff2 — 13.9 KiB — 19 ms — font-display: swaphttps://fonts.gstatic.com/s/lato/v25/S6uyw4BMUTPHjx4wXiWtFCc.woff2S6uyw4BMUTPHjx4wXiWtFCc... https://fonts.gstatic.com/s/lato/v25/S6uyw4BMUTPHjx4wXiWtFCc.woff2 — 13.7 KiB — 21 ms — font-display: swaphttps://fonts.gstatic.com/s/opensans/v44/memtYaGs126MiZpBA-UFUIcVXSCEkx2cmqvXlWqWuU6FxZCJgg.woff2memtYaGs126MiZpBA-UFUIc... https://fonts.gstatic.com/s/opensans/v44/memtYaGs126MiZpBA-UFUIcVXSCEkx2cmqvXlWqWuU6FxZCJgg.woff2 — 44.0 KiB — 41 ms — font-display: swaphttps://fonts.gstatic.com/s/roboto/v51/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMaxKUBHMdazTgWw.woff2KFO7CnqEu92Fr1ME7kSn66a... https://fonts.gstatic.com/s/roboto/v51/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMaxKUBHMdazTgWw.woff2 — 16.3 KiB — 40 ms — font-display: swaphttps://fonts.gstatic.com/s/opensans/v44/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTUGmu0SC55K5gw.woff2memvYaGs126MiZpBA-UvWbX... https://fonts.gstatic.com/s/opensans/v44/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTUGmu0SC55K5gw.woff2 — 22.2 KiB — 38 ms — font-display: swap
KFO7CnqEu92Fr1ME7kSn66a... woff2 swap
Size 37 KB
Load time 43 ms
Start 374 ms
Risk FOUT — text flashes from fallback to web font
memvYaGs126MiZpBA-UvWbX... woff2 swap
Size 42 KB
Load time 25 ms
Start 375 ms
Risk FOUT — text flashes from fallback to web font
S6u9w4BMUTPHh6UVSwiPGQ3... woff2 swap
Size 14 KB
Load time 19 ms
Start 378 ms
Risk FOUT — text flashes from fallback to web font
S6uyw4BMUTPHjx4wXiWtFCc... woff2 swap
Size 14 KB
Load time 21 ms
Start 378 ms
Risk FOUT — text flashes from fallback to web font
memtYaGs126MiZpBA-UFUIc... woff2 swap
Size 44 KB
Load time 41 ms
Start 379 ms
Risk FOUT — text flashes from fallback to web font
KFO7CnqEu92Fr1ME7kSn66a... woff2 swap
Size 16 KB
Load time 40 ms
Start 379 ms
Risk FOUT — text flashes from fallback to web font
memvYaGs126MiZpBA-UvWbX... woff2 swap
Size 22 KB
Load time 38 ms
Start 379 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+
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
Network Waterfall
64 requests over 1343ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s FCP 1.2 s LCP 4.4 shttps://ornl.gov// https://ornl.gov/ — 301 — 204 B — 19 ms — h2https://www.ornl.gov/www.ornl.gov/ https://www.ornl.gov/ — 200 — 15.5 KiB — 21 ms — h2https://www.ornl.gov/sites/default/files/css/css_j91sP-M1huywZEf5vKsWjop5RzzjNWx-4T6dKW5ciNI.css?delta=0&language=en&theme=ornl&include=eJx1kGGOAyEIhS_k6JEaVDqaOmAA03r7utvNbrKJvx68j0cIkLMx0AzwU_i7MJlLDVRnIM7oEguGxFdnQjL1LNSOIw4zpg1M0BoP29CCkFul3eaiR-Q8N_RR0wNlAwmfKww7bAiKsuRl7qpUWYBOvClcLfzrPeTluK9cOBtHaIfaXFefH--J8b4epd_dTREklfCR38EOAqdALxqyjA7N_zl-UB-xVS2YnU41vEJc170B9uOaxwwww.ornl.gov/sites/default/files/cs... https://www.ornl.gov/sites/default/files/css/css_j91sP-M1huywZEf5vKsWjop5RzzjNWx-4T6dKW5ciNI.css?delta=0&language=en&theme=ornl&include=eJx1kGGOAyEIhS_k6JEaVDqaOmAA03r7utvNbrKJvx68j0cIkLMx0AzwU_i7MJlLDVRnIM7oEguGxFdnQjL1LNSOIw4zpg1M0BoP29CCkFul3eaiR-Q8N_RR0wNlAwmfKww7bAiKsuRl7qpUWYBOvClcLfzrPeTluK9cOBtHaIfaXFefH--J8b4epd_dTREklfCR38EOAqdALxqyjA7N_zl-UB-xVS2YnU41vEJc170B9uOaxw — 200 — 4.2 KiB — 25 ms — h2https://www.ornl.gov/sites/default/files/css/css_ROl_CPO1oqaBgKFpuWfrPMHz5lvWQ4WCjnQ52RtMHz8.css?delta=1&language=en&theme=ornl&include=eJx1kGGOAyEIhS_k6JEaVDqaOmAA03r7utvNbrKJvx68j0cIkLMx0AzwU_i7MJlLDVRnIM7oEguGxFdnQjL1LNSOIw4zpg1M0BoP29CCkFul3eaiR-Q8N_RR0wNlAwmfKww7bAiKsuRl7qpUWYBOvClcLfzrPeTluK9cOBtHaIfaXFefH--J8b4epd_dTREklfCR38EOAqdALxqyjA7N_zl-UB-xVS2YnU41vEJc170B9uOaxwwww.ornl.gov/sites/default/files/cs... https://www.ornl.gov/sites/default/files/css/css_ROl_CPO1oqaBgKFpuWfrPMHz5lvWQ4WCjnQ52RtMHz8.css?delta=1&language=en&theme=ornl&include=eJx1kGGOAyEIhS_k6JEaVDqaOmAA03r7utvNbrKJvx68j0cIkLMx0AzwU_i7MJlLDVRnIM7oEguGxFdnQjL1LNSOIw4zpg1M0BoP29CCkFul3eaiR-Q8N_RR0wNlAwmfKww7bAiKsuRl7qpUWYBOvClcLfzrPeTluK9cOBtHaIfaXFefH--J8b4epd_dTREklfCR38EOAqdALxqyjA7N_zl-UB-xVS2YnU41vEJc170B9uOaxw — 200 — 48.3 KiB — 33 ms — h2https://fonts.googleapis.com/css?family=Roboto:100,100i,200,200i,300,300i,400,400i,500,600,700,900fonts.googleapis.com/css?family=Rob... https://fonts.googleapis.com/css?family=Roboto:100,100i,200,200i,300,300i,400,400i,500,600,700,900 — 200 — 2.5 KiB — 139 ms — h2https://fonts.googleapis.com/css?family=Oswald:200,300,400,500,600fonts.googleapis.com/css?family=Osw... https://fonts.googleapis.com/css?family=Oswald:200,300,400,500,600 — 200 — 742 B — 131 ms — h2https://fonts.googleapis.com/css?family=Open+Sans:300,300i,400,400i,500,600fonts.googleapis.com/css?family=Ope... https://fonts.googleapis.com/css?family=Open+Sans:300,300i,400,400i,500,600 — 200 — 2.5 KiB — 129 ms — h2https://fonts.googleapis.com/css2?family=Lato:ital,wght@0,300;0,400;0,700;1,300;1,400;1,700fonts.googleapis.com/css2?family=La... https://fonts.googleapis.com/css2?family=Lato:ital,wght@0,300;0,400;0,700;1,300;1,400;1,700 — 200 — 607 B — 183 ms — h2https://www.ornl.gov/sites/default/files/js/js_wX6TUH86GsC9P-56QWK-k6EU_igJWPdXkSyu-1K52DM.js?scope=header&delta=0&language=en&theme=ornl&include=eJxNy0EOgCAMRNELiZzDU5gqFWugxVJNuL0kunA3_yUDIZgANw_fGDcVtkGUk49JFkiuWkvE8TXKENGtUIyE62vHeaE2t8uNOrFh_1cynCkX7eb_8QDUrSyUwww.ornl.gov/sites/default/files/js... https://www.ornl.gov/sites/default/files/js/js_wX6TUH86GsC9P-56QWK-k6EU_igJWPdXkSyu-1K52DM.js?scope=header&delta=0&language=en&theme=ornl&include=eJxNy0EOgCAMRNELiZzDU5gqFWugxVJNuL0kunA3_yUDIZgANw_fGDcVtkGUk49JFkiuWkvE8TXKENGtUIyE62vHeaE2t8uNOrFh_1cynCkX7eb_8QDUrSyU — 200 — 34.9 KiB — 30 ms — h2https://www.ornl.gov/themes/custom/ornl/images/ornl-logo-green.svgwww.ornl.gov/themes/custom/ornl/ima... https://www.ornl.gov/themes/custom/ornl/images/ornl-logo-green.svg — 200 — 9.7 KiB — 27 ms — h2https://www.ornl.gov/themes/custom/ornl/images/ornl-logo.svgwww.ornl.gov/themes/custom/ornl/ima... https://www.ornl.gov/themes/custom/ornl/images/ornl-logo.svg — 200 — 9.7 KiB — 26 ms — 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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-party 631ms · 439KB · $8/mo
www.ornl.gov
Other
Costly
Execution 229ms
Transfer 15 KB
Monthly Cost $3/mo
Unattributable
Other
Costly
Execution 202ms
Transfer 0 KB
Monthly Cost $3/mo
Google Tag Manager
Tag Manager
Optional
Execution 72ms
Transfer 147 KB
Unused 43%
Monthly Cost $1/mo
Google Tag Manager
Tag Manager
Optional
Execution 69ms
Transfer 158 KB
Unused 39%
Monthly Cost $1/mo
Google Tag Manager
Tag Manager
Optional
Execution 59ms
Transfer 119 KB
Unused 52%
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • www.ornl.gov adds 229ms and costs ~$3/month
  • Unattributable adds 202ms and costs ~$3/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.ornl.gov takes 229ms 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 202ms 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

How third-party costs are calculated

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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