Tools & Wizards About Us
wob.com screenshot

Report Summary

  • 23

    Performance

    Renders faster than
    41% of other websites

  • 89

    Accessibility

    Visual factors better than
    that of 71% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 84

    SEO

    Google-friendlier than
    52% of websites

wob.com

World of Books | Buy cheap used books online | Wob

Page Load Speed

4.9 sec in total

First Response

455 ms

Resources Loaded

2.2 sec

Page Rendered

2.3 sec

wob.com screenshot

About Website

Visit wob.com now to see the best up-to-date Wob content for United Kingdom and also check out these interesting facts you probably never knew about wob.com

Browse our massive collection of over 2 million used books. World of Books is one of the largest online sellers of second-hand books. Free US shipping on orders over $10.

Visit wob.com

Key Findings

We analyzed Wob.com page load time and found that the first response time was 455 ms and then it took 4.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

wob.com performance score

23

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.8 s

57/100

10%

LCP (Largest Contentful Paint)

Value6.2 s

11/100

25%

SI (Speed Index)

Value15.4 s

1/100

10%

TBT (Total Blocking Time)

Value5,280 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.081

94/100

15%

TTI (Time to Interactive)

Value24.0 s

1/100

10%

Network Requests Diagram

en-gb

455 ms

app.09888a511212fbc16cedf9cd6e922d0f.css

49 ms

B1GAF_web_banner.psd__1_.png

32 ms

0349436991_thumbnail.jpg

379 ms

Frame_533.png

5 ms

Our browser made a total of 88 requests to load all elements on the main page. We found that 15% of them (13 requests) were addressed to the original Wob.com, 45% (40 requests) were made to Productimages.worldofbooks.com and 8% (7 requests) were made to Api.wob.com. The less responsive or slowest element that took the longest time to load (721 ms) relates to the external source Images.worldofrarebooks.co.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 585.0 kB (16%)

Content Size

3.6 MB

After Optimization

3.0 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Wob.com main page is 3.6 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. 75% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 2.5 MB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 384.2 kB

  • Original 467.8 kB
  • After minification 465.7 kB
  • After compression 83.6 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 384.2 kB or 82% of the original size.

Image Optimization

-8%

Potential reduce by 198.6 kB

  • Original 2.5 MB
  • After minification 2.3 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. Wob images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 2.3 kB

  • Original 577.5 kB
  • After minification 577.5 kB
  • After compression 575.2 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. This website has mostly compressed JavaScripts.

CSS Optimization

-0%

Potential reduce by 0 B

  • Original 33.4 kB
  • After minification 33.4 kB
  • After compression 33.4 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. Wob.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 19 (23%)

Requests Now

81

After Optimization

62

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 81 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Wob. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 20 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

en-gb

en-gb

455 ms

app.09888a511212fbc16cedf9cd6e922d0f.css

app.09888a511212fbc16cedf9cd6e922d0f.css

49 ms

B1GAF_web_banner.psd__1_.png

B1GAF_web_banner.psd__1_.png

32 ms

0349436991_thumbnail.jpg

0349436991_thumbnail.jpg

379 ms

Frame_533.png

Frame_533.png

5 ms

1709054588DPB_1.jpg

1709054588DPB_1.jpg

721 ms

ZiffitDesktop_1.png

ZiffitDesktop_1.png

170 ms

152911554X_thumbnail.jpg

152911554X_thumbnail.jpg

378 ms

1398525685_thumbnail.jpg

1398525685_thumbnail.jpg

378 ms

1408726602_thumbnail.jpg

1408726602_thumbnail.jpg

406 ms

0008601127_thumbnail.jpg

0008601127_thumbnail.jpg

511 ms

1840228024_thumbnail.jpg

1840228024_thumbnail.jpg

380 ms

1529903521_thumbnail.jpg

1529903521_thumbnail.jpg

378 ms

B0BGY9FBJZ_thumbnail.jpg

B0BGY9FBJZ_thumbnail.jpg

379 ms

B009VI63OE_thumbnail.jpg

B009VI63OE_thumbnail.jpg

379 ms

B0BJ64XVHN_thumbnail.jpg

B0BJ64XVHN_thumbnail.jpg

380 ms

B01N1081RO_thumbnail.jpg

B01N1081RO_thumbnail.jpg

382 ms

Wob_home.png

Wob_home.png

132 ms

Impact_home.png

Impact_home.png

166 ms

1472295935_thumbnail.jpg

1472295935_thumbnail.jpg

378 ms

1529900050_thumbnail.jpg

1529900050_thumbnail.jpg

378 ms

1399724665_thumbnail.jpg

1399724665_thumbnail.jpg

379 ms

1529105102_thumbnail.jpg

1529105102_thumbnail.jpg

378 ms

0241529719_thumbnail.jpg

0241529719_thumbnail.jpg

379 ms

B08FP9XCGQ_thumbnail.jpg

B08FP9XCGQ_thumbnail.jpg

380 ms

1408855658_thumbnail.jpg

1408855658_thumbnail.jpg

379 ms

1526364964_thumbnail.jpg

1526364964_thumbnail.jpg

381 ms

0241558573_thumbnail.jpg

0241558573_thumbnail.jpg

380 ms

1841461202_thumbnail.jpg

1841461202_thumbnail.jpg

381 ms

1509813136_thumbnail.jpg

1509813136_thumbnail.jpg

382 ms

1912920476_thumbnail.jpg

1912920476_thumbnail.jpg

382 ms

manifest.f357acc58a99927d934e.js

manifest.f357acc58a99927d934e.js

97 ms

index.c84e213b83dc3313e271.js

index.c84e213b83dc3313e271.js

96 ms

vendor.aa7387327fdc246ef28d.js

vendor.aa7387327fdc246ef28d.js

152 ms

app.f502fe65f040e38d644c.js

app.f502fe65f040e38d644c.js

141 ms

font.97ec83c.woff

font.97ec83c.woff

272 ms

font.38cc100.woff

font.38cc100.woff

265 ms

icomoon.0550885.woff

icomoon.0550885.woff

273 ms

font.85ad63f.woff

font.85ad63f.woff

272 ms

lang-en-gb.6bdd0963a61055c0d04f.js

lang-en-gb.6bdd0963a61055c0d04f.js

104 ms

agbp

agbp

548 ms

search-insights@2.2.1

search-insights@2.2.1

20 ms

fbevents.js

fbevents.js

22 ms

exponea.min.js

exponea.min.js

467 ms

launcher.js

launcher.js

309 ms

default.aa045a962878c1a0f259.js

default.aa045a962878c1a0f259.js

41 ms

freshbots.min.js

freshbots.min.js

321 ms

461255991793962

461255991793962

261 ms

Frame_533.png

Frame_533.png

160 ms

tp.widget.bootstrap.min.js

tp.widget.bootstrap.min.js

221 ms

0008580871_thumbnail.jpg

0008580871_thumbnail.jpg

206 ms

1784756253_thumbnail.jpg

1784756253_thumbnail.jpg

128 ms

0241252083_thumbnail.jpg

0241252083_thumbnail.jpg

385 ms

1842707310_thumbnail.jpg

1842707310_thumbnail.jpg

128 ms

1472154665_thumbnail.jpg

1472154665_thumbnail.jpg

141 ms

0099558785_thumbnail.jpg

0099558785_thumbnail.jpg

140 ms

1780722400_thumbnail.jpg

1780722400_thumbnail.jpg

128 ms

B0B6XFT4RH_thumbnail.jpg

B0B6XFT4RH_thumbnail.jpg

142 ms

0008535728_thumbnail.jpg

0008535728_thumbnail.jpg

128 ms

1700809768_thumbnail.jpg

1700809768_thumbnail.jpg

141 ms

0241412714_thumbnail.jpg

0241412714_thumbnail.jpg

427 ms

0241003008_thumbnail.jpg

0241003008_thumbnail.jpg

160 ms

1406305898_thumbnail.jpg

1406305898_thumbnail.jpg

159 ms

0241422310_thumbnail.jpg

0241422310_thumbnail.jpg

219 ms

0241550688_thumbnail.jpg

0241550688_thumbnail.jpg

431 ms

0723264589_thumbnail.jpg

0723264589_thumbnail.jpg

470 ms

0241619246_thumbnail.jpg

0241619246_thumbnail.jpg

346 ms

chat-combined.min.css

chat-combined.min.css

20 ms

cart

cart

225 ms

ip-lookup

ip-lookup

263 ms

lead-time

lead-time

104 ms

integrated-messages

integrated-messages

116 ms

configurable-elements

configurable-elements

112 ms

static-block-batch

static-block-batch

97 ms

promo-badge

promo-badge

112 ms

js

js

463 ms

otSDKStub.js

otSDKStub.js

112 ms

cb7eb40f2ce715faa5fd2759042d805c.js

cb7eb40f2ce715faa5fd2759042d805c.js

125 ms

footer-queens-award_140.png

footer-queens-award_140.png

35 ms

footer-b-corp.png

footer-b-corp.png

29 ms

045e04bf-daad-4b5f-8fcf-050bd225ee22.json

045e04bf-daad-4b5f-8fcf-050bd225ee22.json

93 ms

location

location

38 ms

233 ms

otBannerSdk.js

otBannerSdk.js

62 ms

en.json

en.json

27 ms

otCenterRounded.json

otCenterRounded.json

18 ms

otPcCenter.json

otPcCenter.json

40 ms

otCommonStyles.css

otCommonStyles.css

40 ms

Accessibility Review

wob.com accessibility score

89

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

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

wob.com best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

wob.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 Wob.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 Wob.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

wob.com

Open Graph description is not detected on the main page of Wob. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks: