Tools & Wizards About Us
blackout-pdf.online screenshot

Report Summary

  • 37

    Performance

    Renders faster than
    56% of other websites

  • 90

    Accessibility

    Visual factors better than
    that of 74% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

blackout-pdf.online

Blackout PDF Online | Use The Best PDF Editor To Change, Hide, Delete Sensitive Data

Page Load Speed

2.2 sec in total

First Response

16 ms

Resources Loaded

1.1 sec

Page Rendered

1 sec

blackout-pdf.online screenshot

About Website

Click here to check amazing Blackout PDF content. Otherwise, check out these important facts you probably never knew about blackout-pdf.online

Blackout PDF. Learn how to blackout or erase sensitive data in PDF documents. You can modify shape, color and size of a chosen area. Easy to use tools without software downloading. Just create your pe...

Visit blackout-pdf.online

Key Findings

We analyzed Blackout-pdf.online page load time and found that the first response time was 16 ms and then it took 2.2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Performance Metrics

blackout-pdf.online performance score

37

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.1 s

82/100

10%

LCP (Largest Contentful Paint)

Value11.3 s

0/100

25%

SI (Speed Index)

Value2.9 s

95/100

10%

TBT (Total Blocking Time)

Value1,640 ms

12/100

30%

CLS (Cumulative Layout Shift)

Value0.104

88/100

15%

TTI (Time to Interactive)

Value10.1 s

26/100

10%

Network Requests Diagram

blackout-pdf.online

16 ms

blackout-pdf.online

290 ms

style.css

72 ms

functionality-redesign.css

74 ms

popup-cookie.css

84 ms

Our browser made a total of 47 requests to load all elements on the main page. We found that 13% of them (6 requests) were addressed to the original Blackout-pdf.online, 68% (32 requests) were made to Cdn.mrkhub.com and 11% (5 requests) were made to Pdffiller.com. The less responsive or slowest element that took the longest time to load (435 ms) relates to the external source Pdffiller.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 146.5 kB (26%)

Content Size

561.5 kB

After Optimization

415.0 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Blackout-pdf.online main page is 561.5 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. 55% of websites need less resources to load. Images take 272.3 kB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 49.6 kB

  • Original 62.3 kB
  • After minification 49.2 kB
  • After compression 12.7 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 13.0 kB, which is 21% 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 49.6 kB or 80% of the original size.

Image Optimization

-24%

Potential reduce by 65.1 kB

  • Original 272.3 kB
  • After minification 207.2 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. Obviously, Blackout PDF needs image optimization as it can save up to 65.1 kB or 24% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-15%

Potential reduce by 30.2 kB

  • Original 201.4 kB
  • After minification 200.9 kB
  • After compression 171.2 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 30.2 kB or 15% of the original size.

CSS Optimization

-6%

Potential reduce by 1.5 kB

  • Original 25.5 kB
  • After minification 25.5 kB
  • After compression 24.0 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. Blackout-pdf.online has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 22 (50%)

Requests Now

44

After Optimization

22

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 44 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Blackout PDF. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

blackout-pdf.online

blackout-pdf.online

16 ms

blackout-pdf.online

blackout-pdf.online

290 ms

style.css

style.css

72 ms

functionality-redesign.css

functionality-redesign.css

74 ms

popup-cookie.css

popup-cookie.css

84 ms

scroll-up.css

scroll-up.css

82 ms

footer.css

footer.css

84 ms

babel-polyfill.min.js

babel-polyfill.min.js

149 ms

react16-vendors.min.js

react16-vendors.min.js

213 ms

sks_track.js

sks_track.js

100 ms

global.js

global.js

100 ms

functionality-page.js

functionality-page.js

115 ms

popup-cookie.js

popup-cookie.js

123 ms

scrollUp.js

scrollUp.js

143 ms

footer.js

footer.js

125 ms

popup-subscription.js

popup-subscription.js

142 ms

extandPopupOupdatedBrowser.js

extandPopupOupdatedBrowser.js

142 ms

funnel.php

funnel.php

237 ms

user_keyword_store.php

user_keyword_store.php

285 ms

bg.svg

bg.svg

92 ms

combined-shape.svg

combined-shape.svg

94 ms

upload-icon.svg

upload-icon.svg

96 ms

print-icon.svg

print-icon.svg

98 ms

sign-icon.svg

sign-icon.svg

99 ms

review-platform-1.svg

review-platform-1.svg

103 ms

review-platform-2.svg

review-platform-2.svg

108 ms

review-platform-3.svg

review-platform-3.svg

105 ms

review-platform-4.svg

review-platform-4.svg

111 ms

review-platform-5.svg

review-platform-5.svg

213 ms

icon-question.svg

icon-question.svg

215 ms

icon-star-full.svg

icon-star-full.svg

231 ms

icon-star-half.svg

icon-star-half.svg

229 ms

info-icon.svg

info-icon.svg

231 ms

reviews-decoration-desctop.png

reviews-decoration-desctop.png

242 ms

quotes.png

quotes.png

236 ms

footer-accordion-arrow.svg

footer-accordion-arrow.svg

236 ms

close.svg

close.svg

240 ms

icon-cookie-font.png

icon-cookie-font.png

241 ms

logger

logger

270 ms

impressions

impressions

254 ms

logger

logger

281 ms

gtm.js

gtm.js

349 ms

click

click

346 ms

www.pdffiller.com

www.pdffiller.com

435 ms

logger

logger

105 ms

dL0AYHRNY

dL0AYHRNY

6 ms

MKDdBeT8o

MKDdBeT8o

9 ms

Accessibility Review

blackout-pdf.online accessibility score

90

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

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

Image elements do not have [alt] attributes

Best Practices

blackout-pdf.online 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

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

blackout-pdf.online SEO score

77

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

robots.txt is not valid

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

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 doesn't use 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 Blackout-pdf.online 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 Blackout-pdf.online 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

blackout-pdf.online

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