Tools & Wizards About Us
repl.it screenshot

Report Summary

  • 29

    Performance

    Renders faster than
    50% of other websites

  • 88

    Accessibility

    Visual factors better than
    that of 70% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 92

    SEO

    Google-friendlier than
    75% of websites

repl.it

Replit: the collaborative browser based IDE - Replit

Page Load Speed

1.2 sec in total

First Response

104 ms

Resources Loaded

992 ms

Page Rendered

93 ms

repl.it screenshot

About Website

Click here to check amazing Repl content for India. Otherwise, check out these important facts you probably never knew about repl.it

Run code live in your browser. Write and run code in 50+ languages online with Replit, a powerful IDE, compiler, & interpreter.

Visit repl.it

Key Findings

We analyzed Repl.it page load time and found that the first response time was 104 ms and then it took 1.1 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 20% of websites can load faster.

Performance Metrics

repl.it performance score

29

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.6 s

63/100

10%

LCP (Largest Contentful Paint)

Value14.9 s

0/100

25%

SI (Speed Index)

Value4.5 s

73/100

10%

TBT (Total Blocking Time)

Value4,020 ms

1/100

30%

CLS (Cumulative Layout Shift)

Value0.013

100/100

15%

TTI (Time to Interactive)

Value17.2 s

4/100

10%

Network Requests Diagram

repl.it

104 ms

ga.js

85 ms

css

116 ms

parse-1.4.2.min.js

234 ms

jquery.min.js

114 ms

Our browser made a total of 16 requests to load all elements on the main page. We found that 44% of them (7 requests) were addressed to the original Repl.it, 19% (3 requests) were made to Ssl.google-analytics.com and 6% (1 request) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (364 ms) relates to the external source Connect.facebook.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.3 MB (54%)

Content Size

2.3 MB

After Optimization

1.1 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Repl.it main page is 2.3 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. Only 5% of websites need less resources to load. Javascripts take 1.7 MB which makes up the majority of the site volume.

HTML Optimization

-33%

Potential reduce by 204.2 kB

  • Original 612.2 kB
  • After minification 611.7 kB
  • After compression 407.9 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 204.2 kB or 33% of the original size.

Image Optimization

-29%

Potential reduce by 1.1 kB

  • Original 3.9 kB
  • After minification 2.8 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, Repl needs image optimization as it can save up to 1.1 kB or 29% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-62%

Potential reduce by 1.1 MB

  • Original 1.7 MB
  • After minification 1.7 MB
  • After compression 657.7 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 1.1 MB or 62% of the original size.

CSS Optimization

-62%

Potential reduce by 449 B

  • Original 729 B
  • After minification 663 B
  • After compression 280 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. Repl.it needs all CSS files to be minified and compressed as it can save up to 449 B or 62% of the original size.

Requests Breakdown

Number of requests can be reduced by 7 (50%)

Requests Now

14

After Optimization

7

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 14 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Repl. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

repl.it

repl.it

104 ms

ga.js

ga.js

85 ms

css

css

116 ms

parse-1.4.2.min.js

parse-1.4.2.min.js

234 ms

jquery.min.js

jquery.min.js

114 ms

jsrepl.js

jsrepl.js

51 ms

ace.js

ace.js

71 ms

main.bundle.js

main.bundle.js

116 ms

checkout.js

checkout.js

131 ms

__utm.gif

__utm.gif

19 ms

print.css

print.css

30 ms

collect

collect

57 ms

sdk.js

sdk.js

364 ms

is_authenticated

is_authenticated

199 ms

__utm.gif

__utm.gif

83 ms

logo-small.png

logo-small.png

23 ms

Accessibility Review

repl.it accessibility score

88

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.

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

Image elements do not have [alt] attributes

Best Practices

repl.it best practices score

75

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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

repl.it SEO score

92

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

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 Repl.it 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 Repl.it 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

repl.it

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