Access postbox-inc.com. The Power Email App

name

value

score

weighting

FCP (First Contentful Paint)

Value4.3 s

17/100

10%

LCP (Largest Contentful Paint)

Value14.9 s

0/100

25%

SI (Speed Index)

Value7.8 s

23/100

10%

TBT (Total Blocking Time)

Value780 ms

37/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value14.9 s

8/100

10%

postbox-inc.com

44 ms

www.postbox-inc.com

48 ms

gtm.js

113 ms

slick.css

22 ms

slick-theme.css

63 ms

Our browser made a total of 64 requests to load all elements on the main page. We found that 22% of them (14 requests) were addressed to the original Postbox-inc.com, 45% (29 requests) were made to D1ctrvvfkbyl4b.cloudfront.net and 6% (4 requests) were made to S3.amazonaws.com. The less responsive or slowest element that took the longest time to load (620 ms) relates to the external source D1ctrvvfkbyl4b.cloudfront.net.

Content Size

11.9 MB

After Optimization

11.8 MB

In fact, the total size of Postbox-inc.com main page is 11.9 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. Only a small number of websites need less resources to load. Images take 11.3 MB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 30.0 kB

Original 38.1 kB
After minification 31.9 kB
After compression 8.1 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 6.2 kB, which is 16% 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 30.0 kB or 79% of the original size.

Image Optimization

-0%

Potential reduce by 36.3 kB

Original 11.3 MB
After minification 11.2 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. Postbox Inc images are well optimized though.

JavaScript Optimization

-27%

Potential reduce by 56.2 kB

Original 208.6 kB
After minification 208.6 kB
After compression 152.4 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 56.2 kB or 27% of the original size.

CSS Optimization

-2%

Potential reduce by 8.2 kB

Original 385.0 kB
After minification 385.0 kB
After compression 376.7 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. Postbox-inc.com has all CSS files already compressed.

Requests Now

After Optimization

The browser has sent 56 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Postbox Inc. 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.

Accessibility Issues

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

High

[aria-*] attributes do not match their roles

High

[aria-hidden="true"] elements contain focusable descendents

High

ARIA input fields do not have accessible names

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

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.

High

Buttons do not have an accessible name

High

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

These are opportunities to improve keyboard navigation in your application.

High

Heading elements are not in a sequentially-descending order

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

Low

Detected JavaScript libraries

Search Engine Optimization Advices

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

High

Links are not crawlable

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Image elements do not have [alt] attributes

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/).

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 Postbox-inc.com 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 Postbox-inc.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

postbox-inc.com

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

Report Summary

Performance

Accessibility

Best Practices

SEO

The Power Email App - Postbox

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

postbox-inc.com

www.postbox-inc.com

gtm.js

slick.css

slick-theme.css

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

postbox-inc.com

www.postbox-inc.com

gtm.js

slick.css

slick-theme.css

aos.css

fonts.css

app.css

animate.min.css

headroom.min.js

js

jquery.min.js

components.js

app.js

TweenMax.min.js

header-svg.js

player.js

04333D32680D7B1F0.css

js

04333D32680D7B1F0.css

analytics.js

pb7-screenshot-home-main2@2x.png

3cfa22fce71334e5e4533030d856a0c7.svg

shortlist%402x.png

a1faf544-5ec6-4b8b-bad5-b61f0c5a39c5

mike.png

email-providers-short@2x.png

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pb7-screenshot-home-image-search@2x.png

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