Tools & Wizards About Us
periodictable.me screenshot

Report Summary

  • 90

    Performance

    Renders faster than
    91% of other websites

  • 94

    Accessibility

    Visual factors better than
    that of 83% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 97

    SEO

    Google-friendlier than
    91% of websites

periodictable.me

Free Printable Periodic Table of Elements [Download}*

Page Load Speed

3.2 sec in total

First Response

134 ms

Resources Loaded

1.4 sec

Page Rendered

1.7 sec

periodictable.me screenshot

About Website

Visit periodictable.me now to see the best up-to-date Periodic Table content for India and also check out these interesting facts you probably never knew about periodictable.me

Interactive Periodic Table with Names, atomic mass, Charges, electronegativity, with mass, electron configuration & Electronegativity Chart.

Visit periodictable.me

Key Findings

We analyzed Periodictable.me page load time and found that the first response time was 134 ms and then it took 3.1 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

periodictable.me performance score

90

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.6 s

65/100

10%

LCP (Largest Contentful Paint)

Value2.8 s

84/100

25%

SI (Speed Index)

Value2.6 s

97/100

10%

TBT (Total Blocking Time)

Value10 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.101

89/100

15%

TTI (Time to Interactive)

Value2.7 s

97/100

10%

Network Requests Diagram

periodictable.me

134 ms

periodictable.me

350 ms

css

34 ms

style.css

66 ms

style.min.css

132 ms

Our browser made a total of 45 requests to load all elements on the main page. We found that 51% of them (23 requests) were addressed to the original Periodictable.me, 42% (19 requests) were made to Fonts.gstatic.com and 2% (1 request) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (551 ms) belongs to the original domain Periodictable.me.

Page Optimization Overview & Recommendations

Page size can be reduced by 187.1 kB (9%)

Content Size

2.1 MB

After Optimization

1.9 MB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Periodictable.me main page is 2.1 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. 40% of websites need less resources to load. Images take 2.0 MB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 79.8 kB

  • Original 104.7 kB
  • After minification 103.6 kB
  • After compression 24.9 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. 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 79.8 kB or 76% of the original size.

Image Optimization

-5%

Potential reduce by 106.9 kB

  • Original 2.0 MB
  • After minification 1.9 MB

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. Periodic Table images are well optimized though.

JavaScript Optimization

-2%

Potential reduce by 380 B

  • Original 16.2 kB
  • After minification 16.2 kB
  • After compression 15.8 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.

Requests Breakdown

Number of requests can be reduced by 4 (17%)

Requests Now

24

After Optimization

20

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 24 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Periodic Table. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

periodictable.me

periodictable.me

134 ms

periodictable.me

periodictable.me

350 ms

css

css

34 ms

style.css

style.css

66 ms

style.min.css

style.min.css

132 ms

blocks.style.build.css

blocks.style.build.css

190 ms

dashicons.min.css

dashicons.min.css

251 ms

lazyload.min.js

lazyload.min.js

185 ms

periodictable.png

periodictable.png

65 ms

counter.js

counter.js

53 ms

0QI6MX1D_JOuGQbT0gvTJPa787weuxJBkqt8ndeY9Z4.woff

0QI6MX1D_JOuGQbT0gvTJPa787weuxJBkqt8ndeY9Z4.woff

24 ms

0QI6MX1D_JOuGQbT0gvTJPa787weuxJPkqt8ndeY9Z6JTg.woff

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38 ms

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49 ms

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62 ms

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76 ms

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73 ms

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75 ms

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76 ms

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0QI6MX1D_JOuGQbT0gvTJPa787z5vBJPkqt8ndeY9Z6JTg.woff

74 ms

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74 ms

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76 ms

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76 ms

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77 ms

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77 ms

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TK3_WkUHHAIjg75cFRf3bXL8LICs1_FvsUZiYySUhiCnAw.woff

77 ms

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78 ms

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77 ms

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79 ms

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77 ms

CVGP3r0.png

CVGP3r0.png

148 ms

MutedPeriodicTableBBG.png

MutedPeriodicTableBBG.png

209 ms

PeriodicTableSigFigBW.png

PeriodicTableSigFigBW.png

209 ms

periodic_table_of_elements.jpg

periodic_table_of_elements.jpg

218 ms

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278 ms

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338 ms

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2b9e6a0465549cae23a0974955b95cd6.jpg

463 ms

PeriodicTableBW2017.png

PeriodicTableBW2017.png

356 ms

electronegativities.gif

electronegativities.gif

296 ms

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509 ms

nHwui.png

nHwui.png

348 ms

26072026-periodic-table-of-elements-with-electronegativity-values-Stock-Vector.jpg

26072026-periodic-table-of-elements-with-electronegativity-values-Stock-Vector.jpg

551 ms

hires_3.jpg

hires_3.jpg

403 ms

3585f.jpg

3585f.jpg

416 ms

Survey.gif

Survey.gif

491 ms

t.php

t.php

100 ms

Accessibility Review

periodictable.me accessibility score

94

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

Links do not have a discernible name

Best Practices

periodictable.me 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

SEO Factors

periodictable.me SEO score

97

Search Engine Optimization Advices

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 Periodictable.me 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 Periodictable.me 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

periodictable.me

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