Tools & Wizards About Us

Report Summary

  • 11

    Performance

    Renders faster than
    24% of other websites

  • 95

    Accessibility

    Visual factors better than
    that of 86% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

osram.com.cn

欧司朗 | Light is OSRAM

Page Load Speed

23.1 sec in total

First Response

391 ms

Resources Loaded

22.5 sec

Page Rendered

219 ms

About Website

Click here to check amazing OSRAM content for China. Otherwise, check out these important facts you probably never knew about osram.com.cn

了解欧司朗及其创新科技，不仅能够满足全世界人们的照明需求，而且不断致力于改善人们的沟通、出行、工作和生活。

Visit osram.com.cn

Key Findings

We analyzed Osram.com.cn page load time and found that the first response time was 391 ms and then it took 22.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster. Unfortunately, there was 1 request timeout, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

osram.com.cn performance score

11

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.4 s

6/100

10%

LCP (Largest Contentful Paint)

Value14.7 s

0/100

25%

SI (Speed Index)

Value17.4 s

0/100

10%

TBT (Total Blocking Time)

Value870 ms

33/100

30%

CLS (Cumulative Layout Shift)

Value0.887

3/100

15%

TTI (Time to Interactive)

Value27.2 s

0/100

10%

Network Requests Diagram

osram.com.cn

391 ms

www.osram.com.cn

938 ms

424 ms

main-ws.min.css

641 ms

osram-ws-header.min.js

951 ms

Our browser made a total of 51 requests to load all elements on the main page. We found that 51% of them (26 requests) were addressed to the original Osram.com.cn, 31% (16 requests) were made to Mediacn.osram.com.cn and 6% (3 requests) were made to Config.eu1.usercentrics.eu. The less responsive or slowest element that took the longest time to load (19.9 sec) belongs to the original domain Osram.com.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 93.6 kB (7%)

Content Size

1.3 MB

After Optimization

1.2 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Osram.com.cn main page is 1.3 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. 60% of websites need less resources to load. Javascripts take 762.0 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 46.2 kB

  • Original 59.3 kB
  • After minification 57.1 kB
  • After compression 13.0 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. 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 46.2 kB or 78% of the original size.

Image Optimization

-6%

Potential reduce by 26.0 kB

  • Original 421.8 kB
  • After minification 395.7 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. OSRAM images are well optimized though.

JavaScript Optimization

-3%

Potential reduce by 21.1 kB

  • Original 762.0 kB
  • After minification 760.0 kB
  • After compression 741.0 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

-0%

Potential reduce by 281 B

  • Original 93.7 kB
  • After minification 93.7 kB
  • After compression 93.4 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. Osram.com.cn has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 19 (45%)

Requests Now

42

After Optimization

23

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 42 CSS, Javascripts, AJAX and image requests in order to completely render the main page of OSRAM. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 20 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

osram.com.cn accessibility score

95

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 input fields do not have accessible names

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.

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 valid value for its [lang] attribute.

Best Practices

osram.com.cn best practices score

67

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

Missing source maps for large first-party JavaScript

SEO Factors

osram.com.cn SEO score

92

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

Language and Encoding

  • Language Detected

    ZH

  • Language Claimed

    CN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Osram.com.cn can be misinterpreted by Google and other search engines. Our service has detected that Chinese is used on the page, and it does not match the claimed language. Our system also found out that Osram.com.cn 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

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