Report Summary

  • 59

    Performance

    Renders faster than
    74% of other websites

  • 43

    Accessibility

    Visual factors better than
    that of 19% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

backwardincompatible.com

Backward Incompatible

Page Load Speed

1.7 sec in total

First Response

33 ms

Resources Loaded

977 ms

Page Rendered

739 ms

backwardincompatible.com screenshot

About Website

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

Seasoned programmer. Occasional scientist. Super villain.

Visit backwardincompatible.com

Key Findings

We analyzed Backwardincompatible.com page load time and found that the first response time was 33 ms and then it took 1.7 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.

Performance Metrics

backwardincompatible.com performance score

59

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.3 s

73/100

10%

LCP (Largest Contentful Paint)

Value6.4 s

10/100

25%

SI (Speed Index)

Value3.1 s

93/100

10%

TBT (Total Blocking Time)

Value450 ms

62/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value6.5 s

59/100

10%

Network Requests Diagram

backwardincompatible.com

33 ms

backwardincompatible.com

312 ms

pre_tumblelog.js

42 ms

index.build.css

44 ms

main-min.css

47 ms

Our browser made a total of 52 requests to load all elements on the main page. We found that 4% of them (2 requests) were addressed to the original Backwardincompatible.com, 40% (21 requests) were made to 64.media.tumblr.com and 37% (19 requests) were made to Assets.tumblr.com. The less responsive or slowest element that took the longest time to load (567 ms) relates to the external source 64.media.tumblr.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 189.4 kB (45%)

Content Size

420.7 kB

After Optimization

231.3 kB

In fact, the total size of Backwardincompatible.com main page is 420.7 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. 60% of websites need less resources to load. HTML takes 216.1 kB which makes up the majority of the site volume.

HTML Optimization

-87%

Potential reduce by 189.0 kB

  • Original 216.1 kB
  • After minification 151.5 kB
  • After compression 27.2 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 64.7 kB, which is 30% 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 189.0 kB or 87% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 183.1 kB
  • After minification 183.1 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. Backward Incompatible images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 6 B

  • Original 3.4 kB
  • After minification 3.4 kB
  • After compression 3.4 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.

CSS Optimization

-2%

Potential reduce by 386 B

  • Original 18.1 kB
  • After minification 18.1 kB
  • After compression 17.7 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. Backwardincompatible.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 13 (31%)

Requests Now

42

After Optimization

29

The browser has sent 42 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Backward Incompatible. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

backwardincompatible.com accessibility score

43

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.

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

Links do not have a discernible name

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

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

backwardincompatible.com 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

backwardincompatible.com SEO score

83

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

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 uses legible font sizes

High

Tap targets are not sized appropriately

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 Backwardincompatible.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 Backwardincompatible.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 Backward Incompatible. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: