Tools & Wizards About Us
zlookup.com screenshot

Report Summary

  • 37

    Performance

    Renders faster than
    57% of other websites

  • 80

    Accessibility

    Visual factors better than
    that of 50% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 91

    SEO

    Google-friendlier than
    71% of websites

zlookup.com

Reverse Phone Number Lookup | Phone Number Search | ZLOOKUP

Page Load Speed

2.4 sec in total

First Response

161 ms

Resources Loaded

2 sec

Page Rendered

206 ms

zlookup.com screenshot

About Website

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

ZLOOKUP is world’s best Reverse Phone Number Lookup service. Completely & Seriously 100% Free. Identify all incoming calls. Find out who called. Enter Phone, get full name. Free Cell Phone Number Look...

Visit zlookup.com

Key Findings

We analyzed Zlookup.com page load time and found that the first response time was 161 ms and then it took 2.2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.

Performance Metrics

zlookup.com performance score

37

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.8 s

26/100

10%

LCP (Largest Contentful Paint)

Value4.3 s

41/100

25%

SI (Speed Index)

Value4.9 s

65/100

10%

TBT (Total Blocking Time)

Value3,150 ms

2/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value11.7 s

17/100

10%

Network Requests Diagram

zlookup.com

161 ms

www.zlookup.com

711 ms

style-v6.3.1.css

55 ms

animate.min.css

67 ms

jquery-1.10.2.js

72 ms

Our browser made a total of 118 requests to load all elements on the main page. We found that 4% of them (5 requests) were addressed to the original Zlookup.com, 14% (16 requests) were made to Zlookup-3744.kxcdn.com and 11% (13 requests) were made to Static.xx.fbcdn.net. The less responsive or slowest element that took the longest time to load (711 ms) belongs to the original domain Zlookup.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 2.6 MB (70%)

Content Size

3.8 MB

After Optimization

1.1 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Zlookup.com main page is 3.8 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. 80% 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. Javascripts take 3.2 MB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 185.8 kB

  • Original 229.7 kB
  • After minification 199.2 kB
  • After compression 43.9 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 30.4 kB, which is 13% 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 185.8 kB or 81% of the original size.

Image Optimization

-7%

Potential reduce by 9.6 kB

  • Original 135.8 kB
  • After minification 126.1 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. ZLOOKUP images are well optimized though.

JavaScript Optimization

-71%

Potential reduce by 2.3 MB

  • Original 3.2 MB
  • After minification 3.2 MB
  • After compression 916.4 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 2.3 MB or 71% of the original size.

CSS Optimization

-84%

Potential reduce by 163.9 kB

  • Original 194.5 kB
  • After minification 191.8 kB
  • After compression 30.6 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. Zlookup.com needs all CSS files to be minified and compressed as it can save up to 163.9 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 72 (64%)

Requests Now

113

After Optimization

41

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 113 CSS, Javascripts, AJAX and image requests in order to completely render the main page of ZLOOKUP. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 58 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

zlookup.com

zlookup.com

161 ms

www.zlookup.com

www.zlookup.com

711 ms

style-v6.3.1.css

style-v6.3.1.css

55 ms

animate.min.css

animate.min.css

67 ms

jquery-1.10.2.js

jquery-1.10.2.js

72 ms

api.js

api.js

149 ms

platform.js

platform.js

98 ms

adsbygoogle.js

adsbygoogle.js

43 ms

sdk.js

sdk.js

133 ms

logo.png

logo.png

59 ms

mobile-screen.png

mobile-screen.png

59 ms

gothic.woff

gothic.woff

57 ms

ca-pub-1141326028342378.js

ca-pub-1141326028342378.js

34 ms

zrt_lookup.html

zrt_lookup.html

95 ms

show_ads_impl.js

show_ads_impl.js

36 ms

cb=gapi.loaded_0

cb=gapi.loaded_0

76 ms

cb=gapi.loaded_1

cb=gapi.loaded_1

160 ms

fastbutton

fastbutton

155 ms

jquery.classyloader.js

jquery.classyloader.js

56 ms

click_to_see.png

click_to_see.png

252 ms

backspace-icon.png

backspace-icon.png

64 ms

recaptcha__en.js

recaptcha__en.js

284 ms

sendatext-api-v2.0.min.js

sendatext-api-v2.0.min.js

155 ms

addthis_widget.js

addthis_widget.js

244 ms

pla

pla

118 ms

free-call-url.png

free-call-url.png

103 ms

free-call-dialbutton.png

free-call-dialbutton.png

102 ms

free-call-btn.png

free-call-btn.png

131 ms

pc-mac.png

pc-mac.png

176 ms

ads

ads

334 ms

osd.js

osd.js

84 ms

ads

ads

301 ms

us.png

us.png

261 ms

dropdown-icon.png

dropdown-icon.png

262 ms

javascript-v3.1.min.js

javascript-v3.1.min.js

45 ms

wow.min.js

wow.min.js

87 ms

ads

ads

252 ms

311 ms

0sTQzbapM8j.js

0sTQzbapM8j.js

306 ms

rs=AGLTcCOnDxwX8-LbpDmaxOBIoHm7W_kGNA

rs=AGLTcCOnDxwX8-LbpDmaxOBIoHm7W_kGNA

62 ms

postmessageRelay

postmessageRelay

257 ms

ads

ads

268 ms

analytics.js

analytics.js

185 ms

_ate.track.config_resp

_ate.track.config_resp

176 ms

300lo.json

300lo.json

178 ms

fastbutton

fastbutton

95 ms

fastbutton

fastbutton

136 ms

fastbutton

fastbutton

135 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

74 ms

like.php

like.php

290 ms

like.php

like.php

181 ms

sh.48536d49e4da3bdba54606b4.html

sh.48536d49e4da3bdba54606b4.html

72 ms

m.js

m.js

129 ms

p.js

p.js

134 ms

m_window_focus_non_hydra.js

m_window_focus_non_hydra.js

138 ms

osd_listener.js

osd_listener.js

151 ms

m_qs_click_protection.js

m_qs_click_protection.js

153 ms

gen_204

gen_204

36 ms

ad

ad

74 ms

971028622-postmessagerelay.js

971028622-postmessagerelay.js

112 ms

rpc:shindig_random.js

rpc:shindig_random.js

74 ms

dcmads.js

dcmads.js

214 ms

abg.js

abg.js

49 ms

lidar.js

lidar.js

65 ms

collect

collect

49 ms

v.js

v.js

15 ms

layers.0ee9c4d64cf5ebc35dab.js

layers.0ee9c4d64cf5ebc35dab.js

28 ms

feedback.php

feedback.php

193 ms

0sTQzbapM8j.js

0sTQzbapM8j.js

137 ms

cb=gapi.loaded_0

cb=gapi.loaded_0

20 ms

ua-parser.min.js

ua-parser.min.js

68 ms

Iv-bqISgsE7.js

Iv-bqISgsE7.js

274 ms

lH1ibRl5GKq.png

lH1ibRl5GKq.png

222 ms

136.6af2d0105b0c788761be.js

136.6af2d0105b0c788761be.js

77 ms

graph.facebook.com

graph.facebook.com

106 ms

count.json

count.json

87 ms

share

share

98 ms

lXIH49jdqm1.css

lXIH49jdqm1.css

106 ms

l0XisxaOfwr.css

l0XisxaOfwr.css

119 ms

BWRIL9-XbYW.js

BWRIL9-XbYW.js

160 ms

9PT2ga5ImxR.js

9PT2ga5ImxR.js

184 ms

2LUZRJOt5tl.js

2LUZRJOt5tl.js

116 ms

PSmj2iDf6ei.js

PSmj2iDf6ei.js

184 ms

OovCA_JLJRk.js

OovCA_JLJRk.js

203 ms

I0twv5cR4Lp.js

I0twv5cR4Lp.js

130 ms

nhjqzYw1x8Q.js

nhjqzYw1x8Q.js

211 ms

dt

dt

63 ms

imp.js

imp.js

10 ms

imp.js

imp.js

5 ms

ac

ac

470 ms

ac

ac

477 ms

dcmads.js

dcmads.js

25 ms

impl_v40.js

impl_v40.js

3 ms

B11389324.151474308;dc_ver=40.106;dc_eid=40004000;sz=728x90;u_sd=1;dc_adk=2856377471;ord=vzhzoj;dc_rfl=3,https%3A%2F%2Fwww.zlookup.com$2,,https%3A%2F%2Fgoogleads.g.doubleclick.net%2Fpagead%2Fads%3Fclient%3Dca-pub-1141326028342378%26format%3D1110x90%26output%3Dhtml%26h%3D90%26slotname%3D1352516840%26adk%3D1143759541%26adf%3D3779087368%26w%3D1110%26lmt%3D1504687763%26rafmt%3D1%26ea%3D0%26flash%3D0%26fwr%3D0%26url%3Dhttps%253A%252F%252Fwww.zlookup.com%252F%26resp_fmts%3D3%26wgl%3D0%26dt%3D1504698562968%26bpp%3D2%26bdt%3D133%26fdt%3D59%26idt%3D61%26shv%3Dr20170903%26cbv%3Dr20170110%26saldr%3Daa%26correlator%3D6690557468673%26frm%3D20%26ga_vid%3D1655134286.1504698563%26ga_sid%3D1504698563%26ga_hid%3D418496858%26ga_fc%3D0%26pv%3D2%26iag%3D3%26icsg%3D2%26nhd%3D1%26dssz%3D2%26mdo%3D0%26mso%3D0%26u_tz%3D180%26u_his%3D1%26u_java%3D0%26u_h%3D768%26u_w%3D1024%26u_ah%3D768%26u_aw%3D1024%26u_cd%3D32%26u_nplug%3D0%26u_nmime%3D0%26adx%3D285%26ady%3D112%26biw%3D1680%26bih%3D1050%26abxe%3D1%26eid%3D21060946%252C389613000%252C21060715%26oid%3D3%26rx%3D0%26eae%3D4%26fc%3D784%26brdim%3D0%252C0%252C0%252C0%252C1024%252C0%252C0%252C0%252C1680%252C1050%26vis%3D1%26rsz%3D%257C%257CpeE%257C%26abl%3DCS%26ppjl%3Dt%26pfx%3D0%26fu%3D144%26bc%3D1%26ifi%3D1%26dtd%3D71$0;xdt=1;crlt=lrUy4BT!ny;osda=1;sttr=8;prcl=s

B11389324.151474308;dc_ver=40.106;dc_eid=40004000;sz=728x90;u_sd=1;dc_adk=2856377471;ord=vzhzoj;dc_rfl=3,https%3A%2F%2Fwww.zlookup.com$2,,https%3A%2F%2Fgoogleads.g.doubleclick.net%2Fpagead%2Fads%3Fclient%3Dca-pub-1141326028342378%26format%3D1110x90%26output%3Dhtml%26h%3D90%26slotname%3D1352516840%26adk%3D1143759541%26adf%3D3779087368%26w%3D1110%26lmt%3D1504687763%26rafmt%3D1%26ea%3D0%26flash%3D0%26fwr%3D0%26url%3Dhttps%253A%252F%252Fwww.zlookup.com%252F%26resp_fmts%3D3%26wgl%3D0%26dt%3D1504698562968%26bpp%3D2%26bdt%3D133%26fdt%3D59%26idt%3D61%26shv%3Dr20170903%26cbv%3Dr20170110%26saldr%3Daa%26correlator%3D6690557468673%26frm%3D20%26ga_vid%3D1655134286.1504698563%26ga_sid%3D1504698563%26ga_hid%3D418496858%26ga_fc%3D0%26pv%3D2%26iag%3D3%26icsg%3D2%26nhd%3D1%26dssz%3D2%26mdo%3D0%26mso%3D0%26u_tz%3D180%26u_his%3D1%26u_java%3D0%26u_h%3D768%26u_w%3D1024%26u_ah%3D768%26u_aw%3D1024%26u_cd%3D32%26u_nplug%3D0%26u_nmime%3D0%26adx%3D285%26ady%3D112%26biw%3D1680%26bih%3D1050%26abxe%3D1%26eid%3D21060946%252C389613000%252C21060715%26oid%3D3%26rx%3D0%26eae%3D4%26fc%3D784%26brdim%3D0%252C0%252C0%252C0%252C1024%252C0%252C0%252C0%252C1680%252C1050%26vis%3D1%26rsz%3D%257C%257CpeE%257C%26abl%3DCS%26ppjl%3Dt%26pfx%3D0%26fu%3D144%26bc%3D1%26ifi%3D1%26dtd%3D71$0;xdt=1;crlt=lrUy4BT!ny;osda=1;sttr=8;prcl=s

250 ms

pixel

pixel

190 ms

transparent.png

transparent.png

179 ms

21151252_10212944677644609_2914286615134718707_n.jpg

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106 ms

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66 ms

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77 ms

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75 ms

odA9sNLrE86.jpg

odA9sNLrE86.jpg

35 ms

zMhGzNY0cXx.png

zMhGzNY0cXx.png

36 ms

pixel

pixel

79 ms

pixel

pixel

78 ms

SHELL_LUBR_DBannerFleetAirC_728x90_STATIC_MOTOR+OIL_ROTELLA_IMAGE_04172017_US_NA_NA_RandallReilly.jpg

SHELL_LUBR_DBannerFleetAirC_728x90_STATIC_MOTOR+OIL_ROTELLA_IMAGE_04172017_US_NA_NA_RandallReilly.jpg

53 ms

skeleton.js

skeleton.js

87 ms

imp

imp

19 ms

sync

sync

21 ms

dtc

dtc

37 ms

skeleton.js

skeleton.js

51 ms

dt

dt

49 ms

dt

dt

60 ms

sas-browser.js

sas-browser.js

14 ms

sas-dom.js

sas-dom.js

18 ms

d5qAyLYU.js

d5qAyLYU.js

13 ms

activeview

activeview

25 ms

sas-banner-2.4.js

sas-banner-2.4.js

8 ms

9im3l02I.html

9im3l02I.html

14 ms

Accessibility Review

zlookup.com accessibility score

80

Accessibility Issues

ARIA

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.

Impact

Issue

High

[aria-*] attributes do not match their roles

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.

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

<frame> or <iframe> elements do not have a title

High

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

zlookup.com best practices score

58

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

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

zlookup.com SEO score

91

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

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 Zlookup.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 Zlookup.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

zlookup.com

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