Tools & Wizards About Us
boltbio.com screenshot

Report Summary

  • 24

    Performance

    Renders faster than
    43% of other websites

  • 94

    Accessibility

    Visual factors better than
    that of 83% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 84

    SEO

    Google-friendlier than
    52% of websites

boltbio.com

Bolt Biotherapeutics - Unleashing the power of the immunity system

Page Load Speed

1.1 sec in total

First Response

46 ms

Resources Loaded

726 ms

Page Rendered

289 ms

boltbio.com screenshot

About Website

Click here to check amazing Bolt Bio content. Otherwise, check out these important facts you probably never knew about boltbio.com

Bolt Biotherapeutics is a community of fearless innovators committed to delivering transformative treatments to cancer patients with unmet medical needs.

Visit boltbio.com

Key Findings

We analyzed Boltbio.com page load time and found that the first response time was 46 ms and then it took 1 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 20% of websites can load faster.

Performance Metrics

boltbio.com performance score

24

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.3 s

18/100

10%

LCP (Largest Contentful Paint)

Value10.5 s

0/100

25%

SI (Speed Index)

Value9.3 s

13/100

10%

TBT (Total Blocking Time)

Value1,390 ms

16/100

30%

CLS (Cumulative Layout Shift)

Value0.061

98/100

15%

TTI (Time to Interactive)

Value11.9 s

17/100

10%

Network Requests Diagram

boltbio.com

46 ms

www.boltbio.com

44 ms

www.boltbio.com

104 ms

OtAutoBlock.js

59 ms

otSDKStub.js

67 ms

Our browser made a total of 78 requests to load all elements on the main page. We found that 85% of them (66 requests) were addressed to the original Boltbio.com, 6% (5 requests) were made to Fonts.gstatic.com and 4% (3 requests) were made to Cdn.cookielaw.org. The less responsive or slowest element that took the longest time to load (324 ms) belongs to the original domain Boltbio.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 249.7 kB (30%)

Content Size

843.3 kB

After Optimization

593.6 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Boltbio.com main page is 843.3 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 70% of websites need less resources to load. Javascripts take 482.5 kB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 96.0 kB

  • Original 116.4 kB
  • After minification 114.0 kB
  • After compression 20.4 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. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 96.0 kB or 82% of the original size.

Image Optimization

-0%

Potential reduce by 1 B

  • Original 121.5 kB
  • After minification 121.5 kB

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. Bolt Bio images are well optimized though.

JavaScript Optimization

-28%

Potential reduce by 133.7 kB

  • Original 482.5 kB
  • After minification 482.5 kB
  • After compression 348.8 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 133.7 kB or 28% of the original size.

CSS Optimization

-16%

Potential reduce by 20.0 kB

  • Original 122.9 kB
  • After minification 120.6 kB
  • After compression 102.9 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. Boltbio.com needs all CSS files to be minified and compressed as it can save up to 20.0 kB or 16% of the original size.

Requests Breakdown

Number of requests can be reduced by 58 (84%)

Requests Now

69

After Optimization

11

  • Images
  • JavaScript
  • CSS

The browser has sent 69 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Bolt Bio. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 27 to 1 for JavaScripts and from 33 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

boltbio.com

boltbio.com

46 ms

www.boltbio.com

www.boltbio.com

44 ms

www.boltbio.com

www.boltbio.com

104 ms

OtAutoBlock.js

OtAutoBlock.js

59 ms

otSDKStub.js

otSDKStub.js

67 ms

a00d65a039.js

a00d65a039.js

66 ms

grid.css

grid.css

149 ms

base.css

base.css

44 ms

layout.css

layout.css

48 ms

blog.css

blog.css

149 ms

postslider.css

postslider.css

47 ms

buttons.css

buttons.css

44 ms

comments.css

comments.css

54 ms

gallery.css

gallery.css

53 ms

grid_row.css

grid_row.css

57 ms

heading.css

heading.css

58 ms

hr.css

hr.css

61 ms

image.css

image.css

64 ms

social_share.css

social_share.css

74 ms

tabs.css

tabs.css

73 ms

video.css

video.css

74 ms

style.min.css

style.min.css

81 ms

tc-team.css

tc-team.css

75 ms

font-awesome.css

font-awesome.css

75 ms

magnific-popup.css

magnific-popup.css

80 ms

style2.css

style2.css

99 ms

shortcodes.css

shortcodes.css

98 ms

magnific-popup.css

magnific-popup.css

100 ms

avia-snippet-lightbox.css

avia-snippet-lightbox.css

101 ms

avia-snippet-widget.css

avia-snippet-widget.css

101 ms

enfold_child.css

enfold_child.css

103 ms

custom.css

custom.css

108 ms

style.css

style.css

108 ms

default.css

default.css

113 ms

font-awesome.min.css

font-awesome.min.css

111 ms

popupaoc-public.css

popupaoc-public.css

109 ms

jquery.min.js

jquery.min.js

114 ms

jquery-migrate.min.js

jquery-migrate.min.js

117 ms

main.js

main.js

138 ms

avia-compat.js

avia-compat.js

116 ms

adsbygoogle.js

adsbygoogle.js

205 ms

css

css

50 ms

rs6.css

rs6.css

298 ms

avia.js

avia.js

124 ms

shortcodes.js

shortcodes.js

90 ms

gallery.js

gallery.js

98 ms

tabs.js

tabs.js

97 ms

slideshow-video.js

slideshow-video.js

155 ms

video.js

video.js

148 ms

popupaoc-public.js

popupaoc-public.js

149 ms

rbtools.min.js

rbtools.min.js

324 ms

rs6.min.js

rs6.min.js

145 ms

jquery.magnific-popup.js

jquery.magnific-popup.js

141 ms

826150bd-2998-41a4-b06c-891a877655ee.json

826150bd-2998-41a4-b06c-891a877655ee.json

139 ms

css

css

12 ms

bolt2.js

bolt2.js

307 ms

jquery.magnific-popup.min.js

jquery.magnific-popup.min.js

131 ms

avia-snippet-lightbox.js

avia-snippet-lightbox.js

133 ms

avia-snippet-megamenu.js

avia-snippet-megamenu.js

134 ms

avia-snippet-sticky-header.js

avia-snippet-sticky-header.js

133 ms

avia-snippet-widget.js

avia-snippet-widget.js

133 ms

new-tab.js

new-tab.js

296 ms

avia_google_maps_front.js

avia_google_maps_front.js

128 ms

Bolt-Biotherapeutics_Logo-old-logo.png

Bolt-Biotherapeutics_Logo-old-logo.png

133 ms

dummy.png

dummy.png

61 ms

home_ourapproach_image2.png

home_ourapproach_image2.png

133 ms

home_patients_image.png

home_patients_image.png

179 ms

home_ourteam_image.png

home_ourteam_image.png

179 ms

heading-divider.png

heading-divider.png

180 ms

GenmabLogo.png

GenmabLogo.png

185 ms

InnoventLogo.png

InnoventLogo.png

186 ms

TorayLogo2.png

TorayLogo2.png

187 ms

7cHpv4kjgoGqM7E_DMs8.ttf

7cHpv4kjgoGqM7E_DMs8.ttf

133 ms

7cHqv4kjgoGqM7E3_-gs51op.ttf

7cHqv4kjgoGqM7E3_-gs51op.ttf

135 ms

7cHqv4kjgoGqM7E30-8s51op.ttf

7cHqv4kjgoGqM7E30-8s51op.ttf

181 ms

7cHqv4kjgoGqM7E3t-4s51op.ttf

7cHqv4kjgoGqM7E3t-4s51op.ttf

182 ms

7cHqv4kjgoGqM7E3p-ks51op.ttf

7cHqv4kjgoGqM7E3p-ks51op.ttf

45 ms

entypo-fontello.woff

entypo-fontello.woff

157 ms

Accessibility Review

boltbio.com accessibility score

94

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

Links do not have a discernible name

Best Practices

boltbio.com best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

boltbio.com SEO score

84

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

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 Boltbio.com 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 Boltbio.com 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

boltbio.com

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