Report Summary

  • 99

    Performance

    Renders faster than
    96% of other websites

  • 71

    Accessibility

    Visual factors better than
    that of 37% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 50

    SEO

    Google-friendlier than
    18% of websites

Page Load Speed

5.5 sec in total

First Response

1.5 sec

Resources Loaded

3.7 sec

Page Rendered

206 ms

onlinerarebooks.com screenshot

About Website

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

finding old books a good home since 1998

Visit onlinerarebooks.com

Key Findings

We analyzed Onlinerarebooks.com page load time and found that the first response time was 1.5 sec and then it took 4 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

onlinerarebooks.com performance score

99

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.6 s

94/100

10%

LCP (Largest Contentful Paint)

Value1.6 s

99/100

25%

SI (Speed Index)

Value1.6 s

100/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value1.6 s

100/100

10%

Network Requests Diagram

onlinerarebooks.com

1525 ms

analytics.js

70 ms

wp-emoji-release.min.js

310 ms

shape.css

343 ms

toolbar.css

331 ms

Our browser made a total of 90 requests to load all elements on the main page. We found that 44% of them (40 requests) were addressed to the original Onlinerarebooks.com, 8% (7 requests) were made to Apis.google.com and 4% (4 requests) were made to Youtube.com. The less responsive or slowest element that took the longest time to load (1.5 sec) belongs to the original domain Onlinerarebooks.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.8 MB (58%)

Content Size

3.0 MB

After Optimization

1.3 MB

In fact, the total size of Onlinerarebooks.com main page is 3.0 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. 60% of websites need less resources to load. Javascripts take 1.7 MB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 61.2 kB

  • Original 77.3 kB
  • After minification 77.3 kB
  • After compression 16.1 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. 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 61.2 kB or 79% of the original size.

Image Optimization

-3%

Potential reduce by 14.4 kB

  • Original 460.2 kB
  • After minification 445.8 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. Onlinerarebooks images are well optimized though.

JavaScript Optimization

-61%

Potential reduce by 1.0 MB

  • Original 1.7 MB
  • After minification 1.6 MB
  • After compression 651.1 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 1.0 MB or 61% of the original size.

CSS Optimization

-81%

Potential reduce by 670.3 kB

  • Original 823.2 kB
  • After minification 780.5 kB
  • After compression 152.9 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. Onlinerarebooks.com needs all CSS files to be minified and compressed as it can save up to 670.3 kB or 81% of the original size.

Requests Breakdown

Number of requests can be reduced by 61 (70%)

Requests Now

87

After Optimization

26

The browser has sent 87 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Onlinerarebooks. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 40 to 1 for JavaScripts and from 12 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

onlinerarebooks.com accessibility score

71

Accessibility Issues

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

Document doesn't have a <title> element

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

onlinerarebooks.com best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

SEO Factors

onlinerarebooks.com SEO score

50

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

Document doesn't have a <title> element

Crawling and Indexing

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

Impact

Issue

High

Page is blocked from indexing

Language and Encoding

  • Language Detected

    N/A

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Onlinerarebooks.com can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else), while the claimed language is English. Our system also found out that Onlinerarebooks.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

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