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Report Summary

  • 53

    Performance

    Renders faster than
    71% of other websites

  • 74

    Accessibility

    Visual factors better than
    that of 41% of websites

  • 69

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 85

    SEO

    Google-friendlier than
    56% of websites

costco.rebateresearch.com

Costco Rebate Submission Portal - COSTCO REBATES RESEARCH CENTER

Page Load Speed

1.7 sec in total

First Response

246 ms

Resources Loaded

1.3 sec

Page Rendered

93 ms

costco.rebateresearch.com screenshot

About Website

Welcome to costco.rebateresearch.com homepage info - get ready to check Costco Rebate RESEARCH best content for United States right away, or after learning these important things about costco.rebateresearch.com

Costco Rebate Submission Portal

Visit costco.rebateresearch.com

Key Findings

We analyzed Costco.rebateresearch.com page load time and found that the first response time was 246 ms and then it took 1.4 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 25% of websites can load faster. This domain responded with an error, which can significantly jeopardize Costco.rebateresearch.com rating and web reputation

Performance Metrics

costco.rebateresearch.com performance score

53

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.7 s

5/100

10%

LCP (Largest Contentful Paint)

Value6.3 s

10/100

25%

SI (Speed Index)

Value5.7 s

51/100

10%

TBT (Total Blocking Time)

Value250 ms

84/100

30%

CLS (Cumulative Layout Shift)

Value0.031

100/100

15%

TTI (Time to Interactive)

Value7.3 s

50/100

10%

Network Requests Diagram

stepprocessing.cfm

246 ms

cfform.js

206 ms

masks.js

183 ms

costco.css

150 ms

seal_js.php

33 ms

Our browser made a total of 11 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Costco.rebateresearch.com, 18% (2 requests) were made to Sealserver.trustkeeper.net. The less responsive or slowest element that took the longest time to load (246 ms) relates to the external source Apfco.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 51.7 kB (64%)

Content Size

81.2 kB

After Optimization

29.5 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Costco.rebateresearch.com main page is 81.2 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. Only 10% of websites need less resources to load. Images take 56.5 kB which makes up the majority of the site volume.

HTML Optimization

-67%

Potential reduce by 4.4 kB

  • Original 6.7 kB
  • After minification 6.2 kB
  • After compression 2.2 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 4.4 kB or 67% of the original size.

Image Optimization

-60%

Potential reduce by 34.0 kB

  • Original 56.5 kB
  • After minification 22.6 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. Obviously, Costco Rebate RESEARCH needs image optimization as it can save up to 34.0 kB or 60% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-74%

Potential reduce by 11.4 kB

  • Original 15.3 kB
  • After minification 13.7 kB
  • After compression 3.9 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 11.4 kB or 74% of the original size.

CSS Optimization

-73%

Potential reduce by 2.0 kB

  • Original 2.7 kB
  • After minification 2.2 kB
  • After compression 734 B

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. Costco.rebateresearch.com needs all CSS files to be minified and compressed as it can save up to 2.0 kB or 73% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

9

After Optimization

9

  • Images
  • JavaScript
  • CSS

The browser has sent 9 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Costco Rebate RESEARCH. According to our analytics all requests are already optimized.

Network Requests Diagram

stepprocessing.cfm

stepprocessing.cfm

246 ms

cfform.js

cfform.js

206 ms

masks.js

masks.js

183 ms

costco.css

costco.css

150 ms

seal_js.php

seal_js.php

33 ms

seal_image.php

seal_image.php

5 ms

Background_BorderShadow.jpg

Background_BorderShadow.jpg

53 ms

costco_wholesale_214_64.png

costco_wholesale_214_64.png

96 ms

divider.gif

divider.gif

54 ms

btn_next.gif

btn_next.gif

103 ms

apfco.png

apfco.png

238 ms

Accessibility Review

costco.rebateresearch.com accessibility score

74

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

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

Best Practices

costco.rebateresearch.com best practices score

69

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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

costco.rebateresearch.com SEO score

85

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

Page is blocked from indexing

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

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Costco.rebateresearch.com can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Costco.rebateresearch.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

costco.rebateresearch.com

Open Graph description is not detected on the main page of Costco Rebate RESEARCH. 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: