Tools & Wizards About Us
tellows.co screenshot

Report Summary

  • 66

    Performance

    Renders faster than
    79% of other websites

  • 81

    Accessibility

    Visual factors better than
    that of 51% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 79

    SEO

    Google-friendlier than
    40% of websites

tellows.co

tellows - La comunidad de números de teléfonos y de spam telefónico

Page Load Speed

4.6 sec in total

First Response

326 ms

Resources Loaded

1.6 sec

Page Rendered

2.7 sec

tellows.co screenshot

About Website

Click here to check amazing Tellows content for Colombia. Otherwise, check out these important facts you probably never knew about tellows.co

¿Buscas información sobre el número que te ha llamado? tellows te puede ayudar. Mira los comentarios de los otros usuarios y haz tus propias evaluaciones.

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Key Findings

We analyzed Tellows.co page load time and found that the first response time was 326 ms and then it took 4.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

tellows.co performance score

66

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.7 s

91/100

10%

LCP (Largest Contentful Paint)

Value2.5 s

90/100

25%

SI (Speed Index)

Value2.0 s

99/100

10%

TBT (Total Blocking Time)

Value1,510 ms

14/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value7.5 s

48/100

10%

Network Requests Diagram

tellows.co

326 ms

www.tellows.co

368 ms

home.css

19 ms

loader.js

809 ms

adsbygoogle.js

551 ms

Our browser made a total of 14 requests to load all elements on the main page. We found that 79% of them (11 requests) were addressed to the original Tellows.co, 7% (1 request) were made to Cdn.snigelweb.com and 7% (1 request) were made to Pagead2.googlesyndication.com. The less responsive or slowest element that took the longest time to load (809 ms) relates to the external source Cdn.snigelweb.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 46.2 kB (16%)

Content Size

282.5 kB

After Optimization

236.3 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Tellows.co main page is 282.5 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. Images take 133.3 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 45.4 kB

  • Original 56.4 kB
  • After minification 43.9 kB
  • After compression 11.0 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 12.5 kB, which is 22% 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 45.4 kB or 81% of the original size.

Image Optimization

-0%

Potential reduce by 5 B

  • Original 133.3 kB
  • After minification 133.3 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. Tellows images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 55 B

  • Original 82.9 kB
  • After minification 82.9 kB
  • After compression 82.8 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

-7%

Potential reduce by 661 B

  • Original 9.9 kB
  • After minification 9.9 kB
  • After compression 9.2 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. Tellows.co has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 3 (25%)

Requests Now

12

After Optimization

9

  • Images
  • JavaScript
  • CSS

The browser has sent 12 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Tellows. 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 as a result speed up the page load time.

Network Requests Diagram

tellows.co

tellows.co

326 ms

www.tellows.co

www.tellows.co

368 ms

home.css

home.css

19 ms

loader.js

loader.js

809 ms

adsbygoogle.js

adsbygoogle.js

551 ms

bundle.js

bundle.js

189 ms

logo_tel.svg

logo_tel.svg

373 ms

start_visual.jpg

start_visual.jpg

69 ms

stats_startpage.jpg

stats_startpage.jpg

630 ms

start_score_1-9.jpg

start_score_1-9.jpg

393 ms

8d50d0ef11ba0193f8d3.png

8d50d0ef11ba0193f8d3.png

394 ms

48a3729bc96b0eb4cba0.png

48a3729bc96b0eb4cba0.png

394 ms

ga.js

ga.js

616 ms

26e7b7dc9068090ae16f.gif

26e7b7dc9068090ae16f.gif

604 ms

Accessibility Review

tellows.co accessibility score

81

Accessibility Issues

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

Buttons do not have an accessible name

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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

Best Practices

tellows.co 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

Missing source maps for large first-party JavaScript

SEO Factors

tellows.co 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

    ES

  • Language Claimed

    ES

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Tellows.co can be misinterpreted by Google and other search engines. Our service has detected that Spanish is used on the page, and it matches the claimed language. Our system also found out that Tellows.co 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

tellows.co

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