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jam.dev screenshot

Report Summary

  • 19

    Performance

    Renders faster than
    36% of other websites

  • 81

    Accessibility

    Visual factors better than
    that of 51% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 84

    SEO

    Google-friendlier than
    52% of websites

jam.dev

Jam | Build a bug-free product.

Page Load Speed

14.5 sec in total

First Response

118 ms

Resources Loaded

3 sec

Page Rendered

11.4 sec

jam.dev screenshot

About Website

Click here to check amazing Jam content for India. Otherwise, check out these important facts you probably never knew about jam.dev

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Key Findings

We analyzed Jam.dev page load time and found that the first response time was 118 ms and then it took 14.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

jam.dev performance score

19

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.1 s

46/100

10%

LCP (Largest Contentful Paint)

Value20.0 s

0/100

25%

SI (Speed Index)

Value21.5 s

0/100

10%

TBT (Total Blocking Time)

Value114,810 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.044

99/100

15%

TTI (Time to Interactive)

Value153.9 s

0/100

10%

Network Requests Diagram

jam.dev

118 ms

jam.dev

541 ms

uwt.js

566 ms

3a5675bcd41baebd00d5.css

410 ms

polyfills-a40ef1678bae11e696dba45124eadd70.js

1334 ms

Our browser made a total of 61 requests to load all elements on the main page. We found that 95% of them (58 requests) were addressed to the original Jam.dev, 2% (1 request) were made to Static.ads-twitter.com and 2% (1 request) were made to Js.jam.dev. The less responsive or slowest element that took the longest time to load (1.9 sec) belongs to the original domain Jam.dev.

Page Optimization Overview & Recommendations

Page size can be reduced by 552.2 kB (31%)

Content Size

1.8 MB

After Optimization

1.2 MB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Jam.dev main page is 1.8 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. 80% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. HTML takes 880.5 kB which makes up the majority of the site volume.

HTML Optimization

-58%

Potential reduce by 511.0 kB

  • Original 880.5 kB
  • After minification 880.3 kB
  • After compression 369.4 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 511.0 kB or 58% of the original size.

Image Optimization

-11%

Potential reduce by 40.9 kB

  • Original 356.4 kB
  • After minification 315.5 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, Jam needs image optimization as it can save up to 40.9 kB or 11% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-0%

Potential reduce by 283 B

  • Original 533.9 kB
  • After minification 533.9 kB
  • After compression 533.6 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 20 (39%)

Requests Now

51

After Optimization

31

  • Images
  • JavaScript
  • CSS

The browser has sent 51 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Jam. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 21 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

jam.dev

jam.dev

118 ms

jam.dev

jam.dev

541 ms

uwt.js

uwt.js

566 ms

3a5675bcd41baebd00d5.css

3a5675bcd41baebd00d5.css

410 ms

polyfills-a40ef1678bae11e696dba45124eadd70.js

polyfills-a40ef1678bae11e696dba45124eadd70.js

1334 ms

webpack-c4a26d562a850224316c.js

webpack-c4a26d562a850224316c.js

395 ms

framework-a92dfc99e49beee3a704.js

framework-a92dfc99e49beee3a704.js

1506 ms

main-a8645619424ac81c94af.js

main-a8645619424ac81c94af.js

391 ms

_app-4e73d57c8a776609e400.js

_app-4e73d57c8a776609e400.js

1503 ms

94726e6d-f9793dea557157afa0e6.js

94726e6d-f9793dea557157afa0e6.js

1502 ms

4119-bc432f7fed0b7e51cd37.js

4119-bc432f7fed0b7e51cd37.js

1666 ms

8637-0952e5c036a89b4b81e3.js

8637-0952e5c036a89b4b81e3.js

1504 ms

4038-76a3d9ce7eff3ecfc058.js

4038-76a3d9ce7eff3ecfc058.js

1731 ms

4338-d3c15e45c61726923cb7.js

4338-d3c15e45c61726923cb7.js

1700 ms

6208-8ba593edb0829023631c.js

6208-8ba593edb0829023631c.js

1696 ms

7925-dfbb739ed00cac40aa69.js

7925-dfbb739ed00cac40aa69.js

1687 ms

8311-c2ff56d9e1cb30e399aa.js

8311-c2ff56d9e1cb30e399aa.js

1687 ms

1146-46a19a40dad4bc555c2c.js

1146-46a19a40dad4bc555c2c.js

1691 ms

9681-4109211ca5e5bc2dda43.js

9681-4109211ca5e5bc2dda43.js

1819 ms

9777-a697b5cb0eaa9df66d8b.js

9777-a697b5cb0eaa9df66d8b.js

1845 ms

index-ab6c30c2610fe0a44ad3.js

index-ab6c30c2610fe0a44ad3.js

1823 ms

_buildManifest.js

_buildManifest.js

1903 ms

_ssgManifest.js

_ssgManifest.js

1902 ms

cursor.webp

cursor.webp

1844 ms

avatar.webp

avatar.webp

1763 ms

screenshot-graphic.svg

screenshot-graphic.svg

1747 ms

repro-steps-graphic.svg

repro-steps-graphic.svg

1725 ms

ir-graphic.svg

ir-graphic.svg

1763 ms

markup-graphic.svg

markup-graphic.svg

1769 ms

slack-preview.webp

slack-preview.webp

1731 ms

jira-preview.webp

jira-preview.webp

1712 ms

michal-jarcsewski.webp

michal-jarcsewski.webp

1708 ms

nitzan.webp

nitzan.webp

1709 ms

trip-jagolta.webp

trip-jagolta.webp

1713 ms

harry-kainth.webp

harry-kainth.webp

1720 ms

mirjana-lipkovska.webp

mirjana-lipkovska.webp

1706 ms

sunbal-hussain.webp

sunbal-hussain.webp

1710 ms

business-smart-logo.webp

business-smart-logo.webp

1697 ms

hussein-baashen.webp

hussein-baashen.webp

1632 ms

nic-nuyten-avatar.png

nic-nuyten-avatar.png

1647 ms

brady-burke-avatar.jpeg

brady-burke-avatar.jpeg

1476 ms

groover-logo.png

groover-logo.png

1475 ms

lucas-kostecki-avatar.png

lucas-kostecki-avatar.png

542 ms

matthew-haber-avatar.webp

matthew-haber-avatar.webp

544 ms

jacob-kool.webp

jacob-kool.webp

541 ms

marvin-gonzalez.webp

marvin-gonzalez.webp

540 ms

jam-rocket.svg

jam-rocket.svg

527 ms

fe3c951b-02ce-430e-913f-46c311468bbf.js

fe3c951b-02ce-430e-913f-46c311468bbf.js

539 ms

twitter.svg

twitter.svg

513 ms

linkedin.svg

linkedin.svg

508 ms

instagram.svg

instagram.svg

509 ms

tiktok.svg

tiktok.svg

509 ms

youtube.svg

youtube.svg

515 ms

OldschoolGrotesk_W-Regular.b9102e25e4b3e42aeb9c168634ba0ef5.woff

OldschoolGrotesk_W-Regular.b9102e25e4b3e42aeb9c168634ba0ef5.woff

411 ms

OldschoolGrotesk_W-Medium.6443544aaa044229b168cd6d3b8e8887.woff

OldschoolGrotesk_W-Medium.6443544aaa044229b168cd6d3b8e8887.woff

389 ms

PAJJhLM6sSoWKfWCAAwDAjgbRAAB42mNgYGBkAIIbCZo5IPrmUn0hGA0AO8EFTQAA

PAJJhLM6sSoWKfWCAAwDAjgbRAAB42mNgYGBkAIIbCZo5IPrmUn0hGA0AO8EFTQAA

227 ms

OldschoolGrotesk_W-Bold.90197dc122f3a9aace6b2214735aed43.woff

OldschoolGrotesk_W-Bold.90197dc122f3a9aace6b2214735aed43.woff

389 ms

OldschoolGrotesk_W-Heavy.94cdfa2bf61b9c7f7fb56643cf5acca9.woff

OldschoolGrotesk_W-Heavy.94cdfa2bf61b9c7f7fb56643cf5acca9.woff

305 ms

SFMonoMedium.00a97c563c44904eda7f1f4ff7806d68.otf

SFMonoMedium.00a97c563c44904eda7f1f4ff7806d68.otf

307 ms

SFMonoLight.4ffa474f6d18d1b7202181cf3bfff2bc.otf

SFMonoLight.4ffa474f6d18d1b7202181cf3bfff2bc.otf

601 ms

CourierPrime-Regular.7503a2e9660bb6f608fbbbb87cbfba8f.ttf

CourierPrime-Regular.7503a2e9660bb6f608fbbbb87cbfba8f.ttf

586 ms

Accessibility Review

jam.dev accessibility score

81

Accessibility Issues

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

Buttons do not have an accessible name

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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.

Best Practices

jam.dev best practices score

75

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

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

jam.dev SEO score

84

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

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

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 Jam.dev 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 Jam.dev 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

jam.dev

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