Tools & Wizards About Us
btg.ac screenshot

Report Summary

  • 59

    Performance

    Renders faster than
    74% of other websites

  • 73

    Accessibility

    Visual factors better than
    that of 38% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 74

    SEO

    Google-friendlier than
    31% of websites

btg.ac

Bishop Thomas Grant School - Home

Page Load Speed

3.4 sec in total

First Response

108 ms

Resources Loaded

3.1 sec

Page Rendered

237 ms

btg.ac screenshot

About Website

Welcome to btg.ac homepage info - get ready to check Btg best content right away, or after learning these important things about btg.ac

Welcome to the website for Bishop Thomas Grant School, Lambeth

Visit btg.ac

Key Findings

We analyzed Btg.ac page load time and found that the first response time was 108 ms and then it took 3.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

btg.ac performance score

59

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.7 s

30/100

10%

LCP (Largest Contentful Paint)

Value6.7 s

8/100

25%

SI (Speed Index)

Value6.0 s

46/100

10%

TBT (Total Blocking Time)

Value60 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.088

92/100

15%

TTI (Time to Interactive)

Value7.1 s

52/100

10%

Network Requests Diagram

btg.ac

108 ms

www.btg.ac

495 ms

www.btg.ac

1045 ms

c_boxes_buttons.css

207 ms

c.css

307 ms

Our browser made a total of 64 requests to load all elements on the main page. We found that 69% of them (44 requests) were addressed to the original Btg.ac, 17% (11 requests) were made to Fonts.gstatic.com and 6% (4 requests) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (1 sec) belongs to the original domain Btg.ac.

Page Optimization Overview & Recommendations

Page size can be reduced by 268.7 kB (18%)

Content Size

1.5 MB

After Optimization

1.2 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Btg.ac main page is 1.5 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 50% of websites need less resources to load. Images take 1.2 MB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 31.2 kB

  • Original 41.0 kB
  • After minification 35.2 kB
  • After compression 9.8 kB

HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. This page needs HTML code to be minified as it can gain 5.8 kB, which is 14% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 31.2 kB or 76% of the original size.

Image Optimization

-6%

Potential reduce by 76.7 kB

  • Original 1.2 MB
  • After minification 1.1 MB

Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. Btg images are well optimized though.

JavaScript Optimization

-55%

Potential reduce by 67.9 kB

  • Original 122.4 kB
  • After minification 122.4 kB
  • After compression 54.5 kB

It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 67.9 kB or 55% of the original size.

CSS Optimization

-80%

Potential reduce by 92.9 kB

  • Original 115.7 kB
  • After minification 109.8 kB
  • After compression 22.8 kB

CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Btg.ac needs all CSS files to be minified and compressed as it can save up to 92.9 kB or 80% of the original size.

Requests Breakdown

Number of requests can be reduced by 15 (30%)

Requests Now

50

After Optimization

35

  • Images
  • JavaScript
  • CSS

The browser has sent 50 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Btg. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and from 10 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

btg.ac

btg.ac

108 ms

www.btg.ac

www.btg.ac

495 ms

www.btg.ac

www.btg.ac

1045 ms

c_boxes_buttons.css

c_boxes_buttons.css

207 ms

c.css

c.css

307 ms

jquery.min.js

jquery.min.js

16 ms

element.js

element.js

46 ms

scripts.min.js

scripts.min.js

474 ms

cookies.js

cookies.js

474 ms

modal.css

modal.css

309 ms

gswMultiModal.css

gswMultiModal.css

344 ms

gswMultiModal.js

gswMultiModal.js

343 ms

js

js

50 ms

js

js

97 ms

icon

icon

29 ms

css2

css2

45 ms

greenhousefont.css

greenhousefont.css

224 ms

css

css

17 ms

css

css

22 ms

quick-bg.png

quick-bg.png

102 ms

arrow-quick-links.png

arrow-quick-links.png

101 ms

arrow-open-close.png

arrow-open-close.png

102 ms

bishop-logo.png

bishop-logo.png

100 ms

search-ic.png

search-ic.png

99 ms

translate-ic.png

translate-ic.png

139 ms

ceop-proper.png

ceop-proper.png

182 ms

Parent_Pay.jpg

Parent_Pay.jpg

185 ms

rm_unify.jpg

rm_unify.jpg

193 ms

tw-ic.png

tw-ic.png

201 ms

bullet_black.png

bullet_black.png

188 ms

welcome-h1.png

welcome-h1.png

193 ms

location-ic.png

location-ic.png

273 ms

phone-ic.png

phone-ic.png

276 ms

fax-ic.png

fax-ic.png

293 ms

mail-ic.png

mail-ic.png

287 ms

map.jpg

map.jpg

557 ms

1.%20Leading%20Edge%20Logo%202018%20Screen.png

1.%20Leading%20Edge%20Logo%202018%20Screen.png

292 ms

2.%20SGQM%20logo%20green%202018-21.png

2.%20SGQM%20logo%20green%202018-21.png

359 ms

3.%20SSAT%20Member%20Badge%20Colour.png

3.%20SSAT%20Member%20Badge%20Colour.png

367 ms

4.%20Outstanding_Colour_School.png

4.%20Outstanding_Colour_School.png

378 ms

SSAT_2023.jpg

SSAT_2023.jpg

391 ms

6.%20HSL%20logo.png

6.%20HSL%20logo.png

459 ms

close.png

close.png

444 ms

Open_Session_Leaflet_page-0001.jpg

Open_Session_Leaflet_page-0001.jpg

617 ms

S6uyw4BMUTPHjx4wWw.ttf

S6uyw4BMUTPHjx4wWw.ttf

43 ms

S6u9w4BMUTPHh7USSwiPHA.ttf

S6u9w4BMUTPHh7USSwiPHA.ttf

47 ms

S6u8w4BMUTPHh30AXC-v.ttf

S6u8w4BMUTPHh30AXC-v.ttf

52 ms

S6u9w4BMUTPHh6UVSwiPHA.ttf

S6u9w4BMUTPHh6UVSwiPHA.ttf

57 ms

S6u9w4BMUTPHh50XSwiPHA.ttf

S6u9w4BMUTPHh50XSwiPHA.ttf

57 ms

u-4n0qyriQwlOrhSvowK_l52xwNZWMf_.ttf

u-4n0qyriQwlOrhSvowK_l52xwNZWMf_.ttf

61 ms

u-4n0qyriQwlOrhSvowK_l52_wFZWMf_.ttf

u-4n0qyriQwlOrhSvowK_l52_wFZWMf_.ttf

62 ms

u-440qyriQwlOrhSvowK_l5-fCZJ.ttf

u-440qyriQwlOrhSvowK_l5-fCZJ.ttf

61 ms

u-4n0qyriQwlOrhSvowK_l521wRZWMf_.ttf

u-4n0qyriQwlOrhSvowK_l521wRZWMf_.ttf

61 ms

S6u_w4BMUTPHjxsI9w2_Gwfo.ttf

S6u_w4BMUTPHjxsI9w2_Gwfo.ttf

63 ms

S6u8w4BMUTPHjxsAXC-v.ttf

S6u8w4BMUTPHjxsAXC-v.ttf

63 ms

modal_public.css

modal_public.css

331 ms

1BTG154a.jpg

1BTG154a.jpg

424 ms

BTG002a.jpg

BTG002a.jpg

577 ms

BTG047a.jpg

BTG047a.jpg

497 ms

BTG067b.jpg

BTG067b.jpg

510 ms

BTG166.jpg

BTG166.jpg

602 ms

bell.png

bell.png

193 ms

nav-right-arrow-white.png

nav-right-arrow-white.png

185 ms

cookiecorner.png

cookiecorner.png

294 ms

Accessibility Review

btg.ac accessibility score

73

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

Names and labels

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

btg.ac best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

btg.ac SEO score

74

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Links do not have descriptive text

High

Image elements do not have [alt] attributes

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

Mobile Friendly

Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. [Learn more](https://developers.google.com/search/mobile-sites/).

Impact

Issue

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Btg.ac can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Btg.ac main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.

Social Sharing Optimization

btg.ac

Open Graph data is detected on the main page of Btg. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: