Tools & Wizards About Us

Report Summary

  • 58

    Performance

    Renders faster than
    74% of other websites

  • 97

    Accessibility

    Visual factors better than
    that of 91% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 98

    SEO

    Google-friendlier than
    92% of websites

protonmail.ch

Proton Mail: Get a private, secure, and encrypted email account | Proton

Page Load Speed

3.6 sec in total

First Response

587 ms

Resources Loaded

1.8 sec

Page Rendered

1.2 sec

About Website

Click here to check amazing Proton Mail content for United States. Otherwise, check out these important facts you probably never knew about protonmail.ch

Proton Mail is the world’s largest secure email service with over 100 million users. Available on Web, iOS, Android, and desktop. Protected by Swiss privacy law.

Visit protonmail.ch

Key Findings

We analyzed Protonmail.ch page load time and found that the first response time was 587 ms and then it took 3 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

protonmail.ch performance score

58

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.2 s

42/100

10%

LCP (Largest Contentful Paint)

Value4.5 s

37/100

25%

SI (Speed Index)

Value3.6 s

87/100

10%

TBT (Total Blocking Time)

Value570 ms

52/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value7.2 s

51/100

10%

Network Requests Diagram

mail

587 ms

styles.dc27d147666fce311eda.css

203 ms

proton-purple_lf83vr.svg

33 ms

mail_xxy4bg.svg

38 ms

webpack-runtime-7147c3e429d899486ef1.js

256 ms

Our browser made a total of 49 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Protonmail.ch, 16% (8 requests) were made to Images.prismic.io and 10% (5 requests) were made to Proton.me. The less responsive or slowest element that took the longest time to load (587 ms) relates to the external source Proton.me.

Page Optimization Overview & Recommendations

Page size can be reduced by 132.2 kB (5%)

Content Size

2.7 MB

After Optimization

2.5 MB

  • HTML
  • Images

In fact, the total size of Protonmail.ch main page is 2.7 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. 75% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 2.5 MB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 130.5 kB

  • Original 154.2 kB
  • After minification 153.4 kB
  • After compression 23.6 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 130.5 kB or 85% of the original size.

Image Optimization

-0%

Potential reduce by 1.6 kB

  • Original 2.5 MB
  • After minification 2.5 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. Proton Mail images are well optimized though.

Requests Breakdown

Number of requests can be reduced by 6 (13%)

Requests Now

48

After Optimization

42

  • Images
  • JavaScript
  • CSS

The browser has sent 48 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Proton Mail. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

protonmail.ch accessibility score

97

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.

Best Practices

protonmail.ch best practices score

92

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

protonmail.ch 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 Protonmail.ch 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 Protonmail.ch 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 Proton Mail. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: