Tools & Wizards About Us
swapbooks.com screenshot

Report Summary

  • 41

    Performance

    Renders faster than
    60% of other websites

  • 55

    Accessibility

    Visual factors better than
    that of 23% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 67

    SEO

    Google-friendlier than
    25% of websites

swapbooks.com

Sell Used Textbooks + Buy Used Books = Swapbooks.com

Page Load Speed

1.1 sec in total

First Response

250 ms

Resources Loaded

662 ms

Page Rendered

160 ms

swapbooks.com screenshot

About Website

Welcome to swapbooks.com homepage info - get ready to check Swapbooks best content right away, or after learning these important things about swapbooks.com

Swapbooks.com - Buy and sell new and used textbooks and books. Swapbooks.com enables everyone to transact safely and conveniently

Visit swapbooks.com

Key Findings

We analyzed Swapbooks.com page load time and found that the first response time was 250 ms and then it took 822 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 15% of websites can load faster.

Performance Metrics

swapbooks.com performance score

41

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.2 s

99/100

10%

LCP (Largest Contentful Paint)

Value2.8 s

83/100

25%

SI (Speed Index)

Value14.5 s

1/100

10%

TBT (Total Blocking Time)

Value41,450 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.18

67/100

15%

TTI (Time to Interactive)

Value52.1 s

0/100

10%

Network Requests Diagram

swapbooks.com

250 ms

show_ads.js

54 ms

clear10pixel.gif

250 ms

swapbooks_logo_01.gif

251 ms

corner_yellow.gif

250 ms

Our browser made a total of 10 requests to load all elements on the main page. We found that 80% of them (8 requests) were addressed to the original Swapbooks.com, 20% (2 requests) were made to Pagead2.googlesyndication.com. The less responsive or slowest element that took the longest time to load (253 ms) belongs to the original domain Swapbooks.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 30.7 kB (61%)

Content Size

50.1 kB

After Optimization

19.4 kB

  • HTML
  • JavaScript

In fact, the total size of Swapbooks.com main page is 50.1 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. 15% of websites need less resources to load. HTML takes 35.8 kB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 30.7 kB

  • Original 35.8 kB
  • After minification 29.5 kB
  • After compression 5.1 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 6.2 kB, which is 17% 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 30.7 kB or 86% of the original size.

JavaScript Optimization

-0%

Potential reduce by 12 B

  • Original 14.4 kB
  • After minification 14.4 kB
  • After compression 14.4 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.

Requests Breakdown

We found no issues to fix!

Requests Now

9

After Optimization

9

  • Images
  • JavaScript

The browser has sent 9 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Swapbooks. According to our analytics all requests are already optimized.

Network Requests Diagram

swapbooks.com

swapbooks.com

250 ms

show_ads.js

show_ads.js

54 ms

clear10pixel.gif

clear10pixel.gif

250 ms

swapbooks_logo_01.gif

swapbooks_logo_01.gif

251 ms

corner_yellow.gif

corner_yellow.gif

250 ms

divider_but.gif

divider_but.gif

251 ms

sell.gif

sell.gif

252 ms

buy.gif

buy.gif

252 ms

isbn1.gif

isbn1.gif

253 ms

show_ads_impl.js

show_ads_impl.js

149 ms

Accessibility Review

swapbooks.com accessibility score

55

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-*] attributes do not match their roles

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

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

Best Practices

swapbooks.com best practices score

58

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

High

Page has valid source maps

SEO Factors

swapbooks.com SEO score

67

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

Image elements do not have [alt] attributes

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Swapbooks.com can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Swapbooks.com main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

swapbooks.com

Open Graph description is not detected on the main page of Swapbooks. 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: