Tools & Wizards About Us
protonmail.ch screenshot

Report Summary

  • 54

    Performance

    Renders faster than
    72% of other websites

  • 98

    Accessibility

    Visual factors better than
    that of 95% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    82% of websites

  • 91

    SEO

    Google-friendlier than
    71% of websites

protonmail.ch

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

Page Load Speed

6.8 sec in total

First Response

324 ms

Resources Loaded

5.7 sec

Page Rendered

780 ms

protonmail.ch screenshot

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 324 ms and then it took 6.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

protonmail.ch performance score

54

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.8 s

11/100

10%

LCP (Largest Contentful Paint)

Value5.0 s

26/100

25%

SI (Speed Index)

Value5.6 s

53/100

10%

TBT (Total Blocking Time)

Value320 ms

77/100

30%

CLS (Cumulative Layout Shift)

Value0.037

100/100

15%

TTI (Time to Interactive)

Value9.6 s

29/100

10%

Network Requests Diagram

protonmail.ch

324 ms

protonmail.com

590 ms

static.css

403 ms

logo.png

304 ms

encrypted-email-phone.png

499 ms

Our browser made a total of 50 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Protonmail.ch, 92% (46 requests) were made to Protonmail.com and 4% (2 requests) were made to Mail.protonmail.com. The less responsive or slowest element that took the longest time to load (2.9 sec) relates to the external source Protonmail.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 770.7 kB (31%)

Content Size

2.5 MB

After Optimization

1.7 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Protonmail.ch main page is 2.5 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. 35% of websites need less resources to load. Images take 1.9 MB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 38.1 kB

  • Original 46.0 kB
  • After minification 32.5 kB
  • After compression 7.9 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. This page needs HTML code to be minified as it can gain 13.5 kB, which is 29% 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 38.1 kB or 83% of the original size.

Image Optimization

-18%

Potential reduce by 347.9 kB

  • Original 1.9 MB
  • After minification 1.6 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. Obviously, Proton Mail needs image optimization as it can save up to 347.9 kB or 18% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-72%

Potential reduce by 298.8 kB

  • Original 414.0 kB
  • After minification 414.0 kB
  • After compression 115.2 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 298.8 kB or 72% of the original size.

CSS Optimization

-79%

Potential reduce by 85.9 kB

  • Original 108.5 kB
  • After minification 108.5 kB
  • After compression 22.6 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. Protonmail.ch needs all CSS files to be minified and compressed as it can save up to 85.9 kB or 79% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

46

After Optimization

46

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 46 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Proton Mail. According to our analytics all requests are already optimized.

Network Requests Diagram

protonmail.ch

protonmail.ch

324 ms

protonmail.com

protonmail.com

590 ms

static.css

static.css

403 ms

logo.png

logo.png

304 ms

encrypted-email-phone.png

encrypted-email-phone.png

499 ms

inbox-composer.jpg

inbox-composer.jpg

1090 ms

contacts-list.jpg

contacts-list.jpg

993 ms

row-layout.jpg

row-layout.jpg

1101 ms

labels.jpg

labels.jpg

1100 ms

row-message-view.jpg

row-message-view.jpg

1286 ms

slider-image-01.jpg

slider-image-01.jpg

1092 ms

slider-image-02.jpg

slider-image-02.jpg

1393 ms

slider-image-03.jpg

slider-image-03.jpg

1689 ms

slider-image-04.jpg

slider-image-04.jpg

1491 ms

slider-image-05.jpg

slider-image-05.jpg

1494 ms

site.js

site.js

1801 ms

press-logo-01.jpg

press-logo-01.jpg

1581 ms

press-logo-02.jpg

press-logo-02.jpg

1681 ms

press-logo-03.jpg

press-logo-03.jpg

1795 ms

press-logo-04.jpg

press-logo-04.jpg

1796 ms

press-logo-05.jpg

press-logo-05.jpg

1972 ms

press-logo-06.jpg

press-logo-06.jpg

2071 ms

map-image.jpg

map-image.jpg

2183 ms

post-thumb-img-01.jpg

post-thumb-img-01.jpg

2668 ms

post-thumb-img-02.jpg

post-thumb-img-02.jpg

2774 ms

post-thumb-img-03.jpg

post-thumb-img-03.jpg

2277 ms

post-thumb-img-04.jpg

post-thumb-img-04.jpg

2579 ms

partners-01.jpg

partners-01.jpg

2373 ms

partners-02.jpg

partners-02.jpg

2486 ms

partners-03.jpg

partners-03.jpg

2580 ms

partners-04.jpg

partners-04.jpg

2686 ms

partners-05.jpg

partners-05.jpg

2788 ms

partners-06.gif

partners-06.gif

2886 ms

partners-07.gif

partners-07.gif

2886 ms

main-banner.jpg

main-banner.jpg

2761 ms

service-sprites.svg

service-sprites.svg

2568 ms

laptop-bg.png

laptop-bg.png

2760 ms

open-sans-v13-latin-regular.woff

open-sans-v13-latin-regular.woff

2728 ms

open-sans-v13-latin-300.woff

open-sans-v13-latin-300.woff

2815 ms

roboto-v15-latin-100.woff

roboto-v15-latin-100.woff

2838 ms

roboto-v15-latin-300.woff

roboto-v15-latin-300.woff

2904 ms

roboto-v15-latin-regular.woff

roboto-v15-latin-regular.woff

2598 ms

roboto-v15-latin-500.woff

roboto-v15-latin-500.woff

2508 ms

roboto-v15-latin-700.woff

roboto-v15-latin-700.woff

2529 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

2795 ms

fontome-webfont.woff

fontome-webfont.woff

2516 ms

piwik.js

piwik.js

812 ms

mail.protonmail.com

mail.protonmail.com

533 ms

fontome-webfont.ttf

fontome-webfont.ttf

300 ms

mail.protonmail.com

mail.protonmail.com

300 ms

Accessibility Review

protonmail.ch accessibility score

98

Accessibility Issues

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

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

91

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

    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 neither this language nor any other was claimed in <html> or <meta> tags. 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

protonmail.ch

Open Graph description is not detected on the main page of Proton Mail. 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: