Report Summary

  • 21

    Performance

    Renders faster than
    39% of other websites

  • 94

    Accessibility

    Visual factors better than
    that of 84% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 93

    SEO

    Google-friendlier than
    84% of websites

stamps.com

Buy Postage Online, Print USPS Stamps and Shipping Labels - Stamps.com

Page Load Speed

1.1 sec in total

First Response

73 ms

Resources Loaded

655 ms

Page Rendered

380 ms

stamps.com screenshot

About Website

Visit stamps.com now to see the best up-to-date Stamps content for United States and also check out these interesting facts you probably never knew about stamps.com

Buy USPS postage online from your PC, easily print postage stamps and shipping labels for all USPS mail classes.

Visit stamps.com

Key Findings

We analyzed Stamps.com page load time and found that the first response time was 73 ms and then it took 1 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 20% of websites can load faster.

Performance Metrics

stamps.com performance score

21

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.6 s

13/100

10%

LCP (Largest Contentful Paint)

Value5.3 s

21/100

25%

SI (Speed Index)

Value4.6 s

70/100

10%

TBT (Total Blocking Time)

Value1,730 ms

10/100

30%

CLS (Cumulative Layout Shift)

Value0.374

28/100

15%

TTI (Time to Interactive)

Value16.0 s

6/100

10%

Network Requests Diagram

stamps.com

73 ms

www.stamps.com

70 ms

www.stamps.com

90 ms

23755770403.js

110 ms

jquery.min.js

30 ms

Our browser made a total of 36 requests to load all elements on the main page. We found that 94% of them (34 requests) were addressed to the original Stamps.com, 3% (1 request) were made to Cdn.optimizely.com and 3% (1 request) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (167 ms) relates to the external source Googletagmanager.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 170.2 kB (30%)

Content Size

558.1 kB

After Optimization

388.0 kB

In fact, the total size of Stamps.com main page is 558.1 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. 50% of websites need less resources to load. Images take 286.6 kB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 167.3 kB

  • Original 220.1 kB
  • After minification 211.4 kB
  • After compression 52.8 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 167.3 kB or 76% of the original size.

Image Optimization

-0%

Potential reduce by 120 B

  • Original 286.6 kB
  • After minification 286.5 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. Stamps images are well optimized though.

JavaScript Optimization

-5%

Potential reduce by 2.8 kB

  • Original 51.4 kB
  • After minification 51.3 kB
  • After compression 48.7 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.

Requests Breakdown

Number of requests can be reduced by 15 (45%)

Requests Now

33

After Optimization

18

The browser has sent 33 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Stamps. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

stamps.com accessibility score

94

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

High

Some elements have a [tabindex] value greater than 0

Best Practices

stamps.com best practices score

83

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

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

stamps.com SEO score

93

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

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