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freertos.org screenshot

Report Summary

  • 77

    Performance

    Renders faster than
    85% of other websites

  • 100

    Accessibility

    Visual factors better than
    that of 97% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 72

    SEO

    Google-friendlier than
    31% of websites

freertos.org

FreeRTOS™ - FreeRTOS™

Page Load Speed

5.4 sec in total

First Response

237 ms

Resources Loaded

4.9 sec

Page Rendered

275 ms

freertos.org screenshot

About Website

Click here to check amazing FreeRTOS content for China. Otherwise, check out these important facts you probably never knew about freertos.org

RTOS - FreeRTOS is a truly free professional grade RTOS for microcontrollers that supports 35 MCU architectures and become a market leader. A Portable, open source, mini Real Time kernel. A free RTO...

Visit freertos.org

Key Findings

We analyzed Freertos.org page load time and found that the first response time was 237 ms and then it took 5.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

freertos.org performance score

77

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.0 s

24/100

10%

LCP (Largest Contentful Paint)

Value4.0 s

51/100

25%

SI (Speed Index)

Value4.0 s

81/100

10%

TBT (Total Blocking Time)

Value80 ms

99/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value4.2 s

86/100

10%

Network Requests Diagram

freertos.org

237 ms

www.freertos.org

2750 ms

doxygen.css

159 ms

banners.js

164 ms

stlib.js

239 ms

Our browser made a total of 60 requests to load all elements on the main page. We found that 82% of them (49 requests) were addressed to the original Freertos.org, 5% (3 requests) were made to Code.jquery.com and 3% (2 requests) were made to Google.com. The less responsive or slowest element that took the longest time to load (2.8 sec) belongs to the original domain Freertos.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 269.9 kB (45%)

Content Size

598.6 kB

After Optimization

328.7 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Freertos.org main page is 598.6 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 297.9 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 92.6 kB

  • Original 114.8 kB
  • After minification 99.1 kB
  • After compression 22.1 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 15.7 kB, which is 14% 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 92.6 kB or 81% of the original size.

Image Optimization

-23%

Potential reduce by 68.4 kB

  • Original 297.9 kB
  • After minification 229.5 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, FreeRTOS needs image optimization as it can save up to 68.4 kB or 23% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-60%

Potential reduce by 103.2 kB

  • Original 173.3 kB
  • After minification 163.2 kB
  • After compression 70.1 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 103.2 kB or 60% of the original size.

CSS Optimization

-45%

Potential reduce by 5.8 kB

  • Original 12.7 kB
  • After minification 11.0 kB
  • After compression 6.9 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. Freertos.org needs all CSS files to be minified and compressed as it can save up to 5.8 kB or 45% of the original size.

Requests Breakdown

Number of requests can be reduced by 23 (40%)

Requests Now

57

After Optimization

34

  • Images
  • JavaScript
  • CSS

The browser has sent 57 CSS, Javascripts, AJAX and image requests in order to completely render the main page of FreeRTOS. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

freertos.org

freertos.org

237 ms

www.freertos.org

www.freertos.org

2750 ms

doxygen.css

doxygen.css

159 ms

banners.js

banners.js

164 ms

stlib.js

stlib.js

239 ms

left_menu.js

left_menu.js

167 ms

jquery-latest.js

jquery-latest.js

7 ms

jquery-ui.js

jquery-ui.js

17 ms

jquery-ui.css

jquery-ui.css

16 ms

liquid-canvas.js

liquid-canvas.js

161 ms

liquid-canvas-plugins.js

liquid-canvas-plugins.js

228 ms

brand

brand

16 ms

counter.js

counter.js

8 ms

brand

brand

75 ms

sttree.js

sttree.js

244 ms

steffie.js

steffie.js

163 ms

ga.js

ga.js

48 ms

logo.jpg

logo.jpg

234 ms

rss_logo.png

rss_logo.png

161 ms

Twitter_Follow.png

Twitter_Follow.png

156 ms

mailinglist.png

mailinglist.png

237 ms

blank.gif

blank.gif

161 ms

expand_f.gif

expand_f.gif

162 ms

expand_uf.gif

expand_uf.gif

268 ms

line_def0.gif

line_def0.gif

276 ms

line_def1.gif

line_def1.gif

319 ms

line_def2.gif

line_def2.gif

320 ms

line_def3.gif

line_def3.gif

344 ms

menu_hint_arrow.png

menu_hint_arrow.png

352 ms

topology_small.png

topology_small.png

501 ms

RTOS_trace_small.jpg

RTOS_trace_small.jpg

586 ms

TCP_FAT_Demo_Projects.png

TCP_FAT_Demo_Projects.png

625 ms

Atollic_240x240.gif

Atollic_240x240.gif

625 ms

WHIS-middleware-240.png

WHIS-middleware-240.png

577 ms

fail_safe_file_system_240x240.jpg

fail_safe_file_system_240x240.jpg

660 ms

ARM-connected.png

ARM-connected.png

810 ms

Renesas-Electronics-Gold-Alliance-Partner.jpg

Renesas-Electronics-Gold-Alliance-Partner.jpg

735 ms

Microchip-Premier-Third-Party-Partner.jpg

Microchip-Premier-Third-Party-Partner.jpg

820 ms

Partner-of-NXP.jpg

Partner-of-NXP.jpg

785 ms

Atmel-logo.jpg

Atmel-logo.jpg

785 ms

STmicro-logo.jpg

STmicro-logo.jpg

824 ms

Xilinx.jpg

Xilinx.jpg

969 ms

Altera.jpg

Altera.jpg

942 ms

Freescale-alliance-member.jpg

Freescale-alliance-member.jpg

1094 ms

Infineon.png

Infineon.png

1051 ms

Texas-Instruments-MCU-Developer-Network.jpg

Texas-Instruments-MCU-Developer-Network.jpg

977 ms

Cypress-logo.jpg

Cypress-logo.jpg

1058 ms

fujitsu.png

fujitsu.png

1096 ms

microsemi.jpg

microsemi.jpg

1211 ms

Atollic.png

Atollic.png

1132 ms

IAR.jpg

IAR.jpg

1283 ms

Keil.gif

Keil.gif

1223 ms

Embedded-Artists.jpg

Embedded-Artists.jpg

1252 ms

google_custom_search_watermark.gif

google_custom_search_watermark.gif

37 ms

__utm.gif

__utm.gif

14 ms

jquery.form-n-validate.js

jquery.form-n-validate.js

19 ms

t.php

t.php

52 ms

right_triangle.png

right_triangle.png

1161 ms

connectbanner.gif

connectbanner.gif

1255 ms

down_triangle.png

down_triangle.png

1213 ms

Accessibility Review

freertos.org accessibility score

100

Accessibility Issues

Best Practices

freertos.org 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

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

freertos.org SEO score

72

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Links do not have descriptive text

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

High

Tap targets are not sized appropriately

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 Freertos.org 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 Freertos.org 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

freertos.org

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