Report Summary

  • 52

    Performance

    Renders faster than
    69% of other websites

  • 78

    Accessibility

    Visual factors better than
    that of 45% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 85

    SEO

    Google-friendlier than
    55% of websites

impdf.com

imPDF Online Tools | Best and Free Online PDF Tools for Everyone

Page Load Speed

1.2 sec in total

First Response

67 ms

Resources Loaded

550 ms

Page Rendered

537 ms

impdf.com screenshot

About Website

Visit impdf.com now to see the best up-to-date ImPDF content and also check out these interesting facts you probably never knew about impdf.com

imPDF Online Tools is an online service to work with PDF files completely free and easy to use. Merge PDF, split PDF, compress PDF, office to PDF, PDF to JPG and more!

Visit impdf.com

Key Findings

We analyzed Impdf.com page load time and found that the first response time was 67 ms and then it took 1.1 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 25% of websites can load faster.

Performance Metrics

impdf.com performance score

52

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.4 s

16/100

10%

LCP (Largest Contentful Paint)

Value9.1 s

1/100

25%

SI (Speed Index)

Value8.1 s

21/100

10%

TBT (Total Blocking Time)

Value20 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value8.8 s

35/100

10%

Network Requests Diagram

impdf.com

67 ms

impdf.com

80 ms

css

30 ms

aos.css

31 ms

bootstrap.min.css

106 ms

Our browser made a total of 38 requests to load all elements on the main page. We found that 61% of them (23 requests) were addressed to the original Impdf.com, 37% (14 requests) were made to Fonts.gstatic.com and 3% (1 request) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (163 ms) belongs to the original domain Impdf.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 759.8 kB (72%)

Content Size

1.1 MB

After Optimization

292.4 kB

In fact, the total size of Impdf.com main page is 1.1 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. CSS take 559.3 kB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 34.1 kB

  • Original 44.5 kB
  • After minification 40.2 kB
  • After compression 10.3 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 34.1 kB or 77% of the original size.

Image Optimization

-0%

Potential reduce by 380 B

  • Original 104.1 kB
  • After minification 103.8 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. ImPDF images are well optimized though.

JavaScript Optimization

-72%

Potential reduce by 247.0 kB

  • Original 344.4 kB
  • After minification 344.4 kB
  • After compression 97.4 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 247.0 kB or 72% of the original size.

CSS Optimization

-86%

Potential reduce by 478.4 kB

  • Original 559.3 kB
  • After minification 523.8 kB
  • After compression 80.9 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. Impdf.com needs all CSS files to be minified and compressed as it can save up to 478.4 kB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 15 (75%)

Requests Now

20

After Optimization

5

The browser has sent 20 CSS, Javascripts, AJAX and image requests in order to completely render the main page of ImPDF. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

impdf.com accessibility score

78

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

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

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

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

impdf.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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

impdf.com SEO score

85

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

High

robots.txt is not valid

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

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Impdf.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 Impdf.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 description is not detected on the main page of ImPDF. 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: