Tools & Wizards About Us

Report Summary

  • 99

    Performance

    Renders faster than
    96% of other websites

  • 83

    Accessibility

    Visual factors better than
    that of 54% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

ir-spectra.com

IR Spectra. Infrared spectra Library FTIR. FT-IR Database

Page Load Speed

1.8 sec in total

First Response

354 ms

Resources Loaded

1.2 sec

Page Rendered

202 ms

About Website

Welcome to ir-spectra.com homepage info - get ready to check IR Spectra best content right away, or after learning these important things about ir-spectra.com

Infrared spectra library. IR spectra. FTIR spectra database chemicals, polymers, pharmaceutical, drugs, forensic, hazardous, explosives, pesticides

Visit ir-spectra.com

Key Findings

We analyzed Ir-spectra.com page load time and found that the first response time was 354 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 30% of websites can load faster.

Performance Metrics

ir-spectra.com performance score

99

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value0.8 s

100/100

10%

LCP (Largest Contentful Paint)

Value2.0 s

97/100

25%

SI (Speed Index)

Value1.0 s

100/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value0.8 s

100/100

10%

Network Requests Diagram

ir-spectra.com

354 ms

default.css

100 ms

image004.gif

195 ms

img20196078.png

585 ms

img20196125.png

874 ms

Our browser made a total of 6 requests to load all elements on the main page. We found that all of those requests were addressed to Ir-spectra.com and no external sources were called. The less responsive or slowest element that took the longest time to load (874 ms) belongs to the original domain Ir-spectra.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 51.1 kB (17%)

Content Size

295.2 kB

After Optimization

244.1 kB

  • HTML
  • Images
  • CSS

In fact, the total size of Ir-spectra.com main page is 295.2 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only a small number of websites need less resources to load. Images take 288.0 kB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 4.8 kB

  • Original 6.4 kB
  • After minification 6.4 kB
  • After compression 1.6 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 4.8 kB or 75% of the original size.

Image Optimization

-16%

Potential reduce by 45.5 kB

  • Original 288.0 kB
  • After minification 242.5 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. Obviously, IR Spectra needs image optimization as it can save up to 45.5 kB or 16% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

CSS Optimization

-96%

Potential reduce by 718 B

  • Original 745 B
  • After minification 745 B
  • After compression 27 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. Ir-spectra.com needs all CSS files to be minified and compressed as it can save up to 718 B or 96% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

5

After Optimization

5

  • Images
  • CSS

The browser has sent 5 CSS, Javascripts, AJAX and image requests in order to completely render the main page of IR Spectra. According to our analytics all requests are already optimized.

Network Requests Diagram

Accessibility Review

ir-spectra.com accessibility score

83

Accessibility Issues

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

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

Links do not have a discernible name

Best Practices

ir-spectra.com best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

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

SEO Factors

ir-spectra.com SEO score

77

Search Engine Optimization Advices

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Ir-spectra.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 Ir-spectra.com main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

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