Report Summary

  • 68

    Performance

    Renders faster than
    80% of other websites

  • 88

    Accessibility

    Visual factors better than
    that of 69% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 92

    SEO

    Google-friendlier than
    75% of websites

mackerel.io

Mackerel: A Revolutionary Server Management and Monitoring Service

Page Load Speed

7.3 sec in total

First Response

318 ms

Resources Loaded

6 sec

Page Rendered

1.1 sec

mackerel.io screenshot

About Website

Click here to check amazing Mackerel content for Japan. Otherwise, check out these important facts you probably never knew about mackerel.io

With a quick and easy setup, you can be monitoring and managing your servers and visualizing metric data right away with our user-friendly API.

Visit mackerel.io

Key Findings

We analyzed Mackerel.io page load time and found that the first response time was 318 ms and then it took 7 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

mackerel.io performance score

68

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.1 s

48/100

10%

LCP (Largest Contentful Paint)

Value3.1 s

76/100

25%

SI (Speed Index)

Value3.5 s

88/100

10%

TBT (Total Blocking Time)

Value500 ms

58/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value10.3 s

25/100

10%

Network Requests Diagram

mackerel.io

318 ms

mackerel.io

672 ms

3406890073.js

513 ms

mackerel.min.css

678 ms

mackerel.en.min.js

1706 ms

Our browser made a total of 107 requests to load all elements on the main page. We found that 51% of them (55 requests) were addressed to the original Mackerel.io, 7% (7 requests) were made to Apis.google.com and 6% (6 requests) were made to B.hatena.ne.jp. The less responsive or slowest element that took the longest time to load (2.5 sec) belongs to the original domain Mackerel.io.

Page Optimization Overview & Recommendations

Page size can be reduced by 237.5 kB (16%)

Content Size

1.5 MB

After Optimization

1.3 MB

In fact, the total size of Mackerel.io main page is 1.5 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. Images take 1.1 MB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 41.5 kB

  • Original 54.4 kB
  • After minification 50.1 kB
  • After compression 12.9 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 41.5 kB or 76% of the original size.

Image Optimization

-4%

Potential reduce by 40.7 kB

  • Original 1.1 MB
  • After minification 1.1 MB

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. Mackerel images are well optimized though.

JavaScript Optimization

-50%

Potential reduce by 147.2 kB

  • Original 296.1 kB
  • After minification 295.1 kB
  • After compression 148.9 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 147.2 kB or 50% of the original size.

CSS Optimization

-75%

Potential reduce by 8.0 kB

  • Original 10.7 kB
  • After minification 8.2 kB
  • After compression 2.7 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. Mackerel.io needs all CSS files to be minified and compressed as it can save up to 8.0 kB or 75% of the original size.

Requests Breakdown

Number of requests can be reduced by 39 (39%)

Requests Now

100

After Optimization

61

The browser has sent 100 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Mackerel. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 26 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

mackerel.io accessibility score

88

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

Links do not have a discernible name

Best Practices

mackerel.io 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

High

Page has valid source maps

SEO Factors

mackerel.io SEO score

92

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

Links do not have descriptive text

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

    N/A

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Mackerel.io 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 Mackerel.io main page’s claimed encoding is . Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

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