Tools & Wizards About Us
postcodebase.com screenshot

Report Summary

  • 48

    Performance

    Renders faster than
    66% of other websites

  • 82

    Accessibility

    Visual factors better than
    that of 52% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 79

    SEO

    Google-friendlier than
    40% of websites

postcodebase.com

Home | PostCodeBase.com ✉️

Page Load Speed

3 sec in total

First Response

43 ms

Resources Loaded

1.9 sec

Page Rendered

1 sec

postcodebase.com screenshot

About Website

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

This is a professional postal code / ZIP code website, it currently provides postcode inquiry service around hundreds of countries in 50+ languages. There are more than 40,000,000 postcode / ZIP code ...

Visit postcodebase.com

Key Findings

We analyzed Postcodebase.com page load time and found that the first response time was 43 ms and then it took 2.9 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

postcodebase.com performance score

48

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.0 s

84/100

10%

LCP (Largest Contentful Paint)

Value2.4 s

91/100

25%

SI (Speed Index)

Value9.0 s

15/100

10%

TBT (Total Blocking Time)

Value3,270 ms

2/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value31.1 s

0/100

10%

Network Requests Diagram

postcodebase.com

43 ms

postcodebase.com

53 ms

css_xE-rWrJf-fncB6ztZfd2huxqgxu4WO-qwma6Xer30m4.css

93 ms

css_TsVRTbLFUpEZAfw-_bWPJu840QT523CPjUVJ5MRWfyk.css

120 ms

css_PGbJgHCUCBf4dg7K9Kt8aAwsApndP4GZ9RuToPy3-Fk.css

54 ms

Our browser made a total of 156 requests to load all elements on the main page. We found that 98% of them (153 requests) were addressed to the original Postcodebase.com, 1% (2 requests) were made to A.pub.network and 1% (1 request) were made to Static.cloudflareinsights.com. The less responsive or slowest element that took the longest time to load (627 ms) belongs to the original domain Postcodebase.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 46.0 kB (30%)

Content Size

151.1 kB

After Optimization

105.1 kB

  • HTML
  • JavaScript
  • CSS

In fact, the total size of Postcodebase.com main page is 151.1 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. 35% of websites need less resources to load. Javascripts take 88.1 kB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 45.9 kB

  • Original 55.2 kB
  • After minification 55.1 kB
  • After compression 9.3 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 45.9 kB or 83% of the original size.

JavaScript Optimization

-0%

Potential reduce by 0 B

  • Original 88.1 kB
  • After minification 88.1 kB
  • After compression 88.1 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.

CSS Optimization

-2%

Potential reduce by 123 B

  • Original 7.8 kB
  • After minification 7.8 kB
  • After compression 7.7 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. Postcodebase.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 94 (61%)

Requests Now

154

After Optimization

60

  • Images
  • JavaScript
  • CSS

The browser has sent 154 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Post Code Base. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

postcodebase.com

postcodebase.com

43 ms

postcodebase.com

postcodebase.com

53 ms

css_xE-rWrJf-fncB6ztZfd2huxqgxu4WO-qwma6Xer30m4.css

css_xE-rWrJf-fncB6ztZfd2huxqgxu4WO-qwma6Xer30m4.css

93 ms

css_TsVRTbLFUpEZAfw-_bWPJu840QT523CPjUVJ5MRWfyk.css

css_TsVRTbLFUpEZAfw-_bWPJu840QT523CPjUVJ5MRWfyk.css

120 ms

css_PGbJgHCUCBf4dg7K9Kt8aAwsApndP4GZ9RuToPy3-Fk.css

css_PGbJgHCUCBf4dg7K9Kt8aAwsApndP4GZ9RuToPy3-Fk.css

54 ms

css_HGpVG8z_qpe9fW4O7iT1qEuOSqfqocNFtvVxheCJUPU.css

css_HGpVG8z_qpe9fW4O7iT1qEuOSqfqocNFtvVxheCJUPU.css

41 ms

cls.css

cls.css

35 ms

pubfig.min.js

pubfig.min.js

55 ms

rocket-loader.min.js

rocket-loader.min.js

25 ms

vef91dfe02fce4ee0ad053f6de4f175db1715022073587

vef91dfe02fce4ee0ad053f6de4f175db1715022073587

69 ms

logo.svg

logo.svg

99 ms

lang-switch.svg

lang-switch.svg

23 ms

banner.svg

banner.svg

152 ms

zipcode.svg

zipcode.svg

100 ms

function-bg.svg

function-bg.svg

149 ms

banner-02.svg

banner-02.svg

162 ms

banner-03.svg

banner-03.svg

45 ms

banner-04.svg

banner-04.svg

65 ms

banner-05.svg

banner-05.svg

87 ms

down.svg

down.svg

150 ms

Albania.svg

Albania.svg

201 ms

Andorra.svg

Andorra.svg

192 ms

Austria.svg

Austria.svg

203 ms

Belarus.svg

Belarus.svg

162 ms

Belgium.svg

Belgium.svg

216 ms

Bosnia-and-Herzegovina.svg

Bosnia-and-Herzegovina.svg

251 ms

Bulgaria.svg

Bulgaria.svg

163 ms

Croatia.svg

Croatia.svg

197 ms

Czech-Republic.svg

Czech-Republic.svg

291 ms

Denmark.svg

Denmark.svg

222 ms

Estonia.svg

Estonia.svg

302 ms

Finland.svg

Finland.svg

299 ms

France.svg

France.svg

322 ms

Germany.svg

Germany.svg

245 ms

Greece.svg

Greece.svg

270 ms

Hungary.svg

Hungary.svg

345 ms

Iceland.svg

Iceland.svg

300 ms

Ireland.svg

Ireland.svg

392 ms

Italy.svg

Italy.svg

407 ms

Latvia.svg

Latvia.svg

340 ms

Liechtenstein.svg

Liechtenstein.svg

404 ms

Lithuania.svg

Lithuania.svg

341 ms

Luxembourg.svg

Luxembourg.svg

389 ms

Macedonia.svg

Macedonia.svg

443 ms

Malta.svg

Malta.svg

370 ms

Moldova.svg

Moldova.svg

392 ms

Monaco.svg

Monaco.svg

394 ms

Montenegro.svg

Montenegro.svg

366 ms

Netherlands.svg

Netherlands.svg

436 ms

Norway.svg

Norway.svg

417 ms

Poland.svg

Poland.svg

417 ms

Portugal.svg

Portugal.svg

408 ms

Romania.svg

Romania.svg

288 ms

Russia.svg

Russia.svg

304 ms

San-Marino.svg

San-Marino.svg

384 ms

Serbia.svg

Serbia.svg

321 ms

Singapore.svg

Singapore.svg

336 ms

Slovakia.svg

Slovakia.svg

354 ms

Slovenia.svg

Slovenia.svg

405 ms

Spain.svg

Spain.svg

407 ms

Sweden.svg

Sweden.svg

410 ms

Switzerland.svg

Switzerland.svg

420 ms

Ukraine.svg

Ukraine.svg

324 ms

United-Kingdom.svg

United-Kingdom.svg

334 ms

Vatican.svg

Vatican.svg

398 ms

Afghanistan.svg

Afghanistan.svg

332 ms

Armenia.svg

Armenia.svg

329 ms

Azerbaijan.svg

Azerbaijan.svg

403 ms

Bangladesh.svg

Bangladesh.svg

319 ms

Bhutan.svg

Bhutan.svg

403 ms

Brunei.svg

Brunei.svg

416 ms

Cambodia.svg

Cambodia.svg

314 ms

China.svg

China.svg

385 ms

Cyprus.svg

Cyprus.svg

328 ms

India.svg

India.svg

395 ms

Indonesia.svg

Indonesia.svg

314 ms

Iran.svg

Iran.svg

325 ms

Iraq.svg

Iraq.svg

393 ms

Israel.svg

Israel.svg

403 ms

Japan.svg

Japan.svg

324 ms

Kazakhstan.svg

Kazakhstan.svg

416 ms

Kyrgyzstan.svg

Kyrgyzstan.svg

416 ms

Lebanon.svg

Lebanon.svg

331 ms

Malaysia.svg

Malaysia.svg

627 ms

Maldives.svg

Maldives.svg

322 ms

Mongolia.svg

Mongolia.svg

324 ms

Myanmar.svg

Myanmar.svg

324 ms

Nepal.svg

Nepal.svg

307 ms

Pakistan.svg

Pakistan.svg

408 ms

Philippines.svg

Philippines.svg

317 ms

South-Korea.svg

South-Korea.svg

318 ms

Sri-Lanka.svg

Sri-Lanka.svg

323 ms

Taiwan.svg

Taiwan.svg

398 ms

Thailand.svg

Thailand.svg

384 ms

Turkey.svg

Turkey.svg

389 ms

Uzbekistan.svg

Uzbekistan.svg

298 ms

Vietnam.svg

Vietnam.svg

285 ms

Yemen.svg

Yemen.svg

298 ms

Bermuda.svg

Bermuda.svg

312 ms

Canada.svg

Canada.svg

403 ms

Cuba.svg

Cuba.svg

322 ms

Dominican-Republic.svg

Dominican-Republic.svg

394 ms

El-Salvador.svg

El-Salvador.svg

444 ms

Guatemala.svg

Guatemala.svg

313 ms

Haiti.svg

Haiti.svg

388 ms

Honduras.svg

Honduras.svg

293 ms

Jamaica.svg

Jamaica.svg

297 ms

Mexico.svg

Mexico.svg

310 ms

Nicaragua.svg

Nicaragua.svg

322 ms

Panama.svg

Panama.svg

381 ms

United-States.svg

United-States.svg

604 ms

Argentina.svg

Argentina.svg

319 ms

Bolivia.svg

Bolivia.svg

398 ms

Brazil.svg

Brazil.svg

320 ms

Chile.svg

Chile.svg

330 ms

Colombia.svg

Colombia.svg

392 ms

Costa-Rica.svg

Costa-Rica.svg

299 ms

Ecuador.svg

Ecuador.svg

306 ms

Paraguay.svg

Paraguay.svg

384 ms

Peru.svg

Peru.svg

316 ms

Uruguay.svg

Uruguay.svg

385 ms

Venezuela.svg

Venezuela.svg

318 ms

Algeria.svg

Algeria.svg

395 ms

Angola.svg

Angola.svg

336 ms

Benin.svg

Benin.svg

435 ms

Burkina-Faso.svg

Burkina-Faso.svg

341 ms

Burundi.svg

Burundi.svg

345 ms

Cameroon.svg

Cameroon.svg

329 ms

Cape-Verde.svg

Cape-Verde.svg

395 ms

Central-African-Republic.svg

Central-African-Republic.svg

307 ms

Chad.svg

Chad.svg

325 ms

C%C3%B4te-d'Ivoire.svg

C%C3%B4te-d'Ivoire.svg

325 ms

Ethiopia.svg

Ethiopia.svg

396 ms

Kenya.svg

Kenya.svg

402 ms

Liberia.svg

Liberia.svg

326 ms

Libya.svg

Libya.svg

329 ms

Madagascar.svg

Madagascar.svg

390 ms

Mali.svg

Mali.svg

311 ms

Morocco.svg

Morocco.svg

314 ms

Mozambique.svg

Mozambique.svg

306 ms

Niger.svg

Niger.svg

319 ms

Nigeria.svg

Nigeria.svg

388 ms

Senegal.svg

Senegal.svg

384 ms

Somalia.svg

Somalia.svg

303 ms

South-Africa.svg

South-Africa.svg

300 ms

Swaziland.svg

Swaziland.svg

369 ms

Tanzania.svg

Tanzania.svg

373 ms

Timor-Leste.svg

Timor-Leste.svg

377 ms

Tunisia.svg

Tunisia.svg

298 ms

Uganda.svg

Uganda.svg

302 ms

Zimbabwe.svg

Zimbabwe.svg

324 ms

Australia.svg

Australia.svg

326 ms

New-Zealand.svg

New-Zealand.svg

389 ms

Papua-New-Guinea.svg

Papua-New-Guinea.svg

394 ms

gotop.svg

gotop.svg

375 ms

js_YD9ro0PAqY25gGWrTki6TjRUG8TdokmmxjfqpNNfzVU.js

js_YD9ro0PAqY25gGWrTki6TjRUG8TdokmmxjfqpNNfzVU.js

115 ms

Accessibility Review

postcodebase.com accessibility score

82

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

Image elements do not have [alt] attributes

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

postcodebase.com best practices score

75

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

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

postcodebase.com SEO score

79

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

Content Best Practices

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

Impact

Issue

High

Image elements do not have [alt] attributes

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 Postcodebase.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 Postcodebase.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

postcodebase.com

Open Graph description is not detected on the main page of Post Code Base. 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: