Tools & Wizards About Us

Report Summary

  • 60

    Performance

    Renders faster than
    75% of other websites

  • 96

    Accessibility

    Visual factors better than
    that of 88% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 98

    SEO

    Google-friendlier than
    92% of websites

pdfjs.express

PDF.js Viewer: Annotate, Form Fill | Easy Setup | PDF.js Express

Page Load Speed

2.2 sec in total

First Response

348 ms

Resources Loaded

1.4 sec

Page Rendered

477 ms

About Website

Welcome to pdfjs.express homepage info - get ready to check PDF Js best content for India right away, or after learning these important things about pdfjs.express

Fast & easy PDF.js Viewer integration with PDF.js Express. Add annotations, fill forms & sign PDFs in a web browser. Fully supported - download & try it free

Visit pdfjs.express

Key Findings

We analyzed Pdfjs.express page load time and found that the first response time was 348 ms and then it took 1.9 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.

Performance Metrics

pdfjs.express performance score

60

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.8 s

88/100

10%

LCP (Largest Contentful Paint)

Value2.4 s

91/100

25%

SI (Speed Index)

Value2.7 s

97/100

10%

TBT (Total Blocking Time)

Value1,680 ms

11/100

30%

CLS (Cumulative Layout Shift)

Value0.147

77/100

15%

TTI (Time to Interactive)

Value8.2 s

41/100

10%

Network Requests Diagram

pdfjs.express

348 ms

pdfjs.express

284 ms

js

60 ms

munchkin.js

103 ms

hotjar-2159231.js

101 ms

Our browser made a total of 60 requests to load all elements on the main page. We found that 82% of them (49 requests) were addressed to the original Pdfjs.express, 3% (2 requests) were made to Munchkin.marketo.net and 3% (2 requests) were made to Redditstatic.com. The less responsive or slowest element that took the longest time to load (576 ms) belongs to the original domain Pdfjs.express.

Page Optimization Overview & Recommendations

Page size can be reduced by 30.2 kB (14%)

Content Size

221.9 kB

After Optimization

191.8 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Pdfjs.express main page is 221.9 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. 40% of websites need less resources to load. Images take 167.7 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 23.5 kB

  • Original 30.1 kB
  • After minification 30.0 kB
  • After compression 6.6 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 23.5 kB or 78% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 167.7 kB
  • After minification 167.7 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. PDF Js images are well optimized though.

JavaScript Optimization

-28%

Potential reduce by 6.7 kB

  • Original 24.1 kB
  • After minification 24.0 kB
  • After compression 17.4 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 6.7 kB or 28% of the original size.

Requests Breakdown

Number of requests can be reduced by 32 (58%)

Requests Now

55

After Optimization

23

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 55 CSS, Javascripts, AJAX and image requests in order to completely render the main page of PDF Js. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 21 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

pdfjs.express accessibility score

96

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

Best Practices

pdfjs.express best practices score

83

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

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

pdfjs.express SEO score

98

Search Engine Optimization Advices

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 Pdfjs.express 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 Pdfjs.express 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 PDF Js. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: