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jam.dev screenshot

Report Summary

  • 41

    Performance

    Renders faster than
    60% 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

  • 83

    SEO

    Google-friendlier than
    46% of websites

jam.dev

Jam | Build a bug-free product.

Page Load Speed

3.6 sec in total

First Response

364 ms

Resources Loaded

1.5 sec

Page Rendered

1.7 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

Report bugs in seconds, and get back to what you were doing. It's as easy as taking a screenshot. Fast for you, and perfect for the engineers.

Visit jam.dev

Key Findings

We analyzed Jam.dev page load time and found that the first response time was 364 ms and then it took 3.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

jam.dev performance score

41

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.1 s

22/100

10%

LCP (Largest Contentful Paint)

Value10.0 s

0/100

25%

SI (Speed Index)

Value10.7 s

7/100

10%

TBT (Total Blocking Time)

Value350 ms

73/100

30%

CLS (Cumulative Layout Shift)

Value0.044

99/100

15%

TTI (Time to Interactive)

Value13.4 s

11/100

10%

Network Requests Diagram

jam.dev

364 ms

uwt.js

39 ms

7add5c0f5636c0a2b16d.css

172 ms

cursor.webp

334 ms

avatar.webp

106 ms

Our browser made a total of 56 requests to load all elements on the main page. We found that 96% of them (54 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 . The less responsive or slowest element that took the longest time to load (840 ms) belongs to the original domain Jam.dev.

Page Optimization Overview & Recommendations

Page size can be reduced by 505.4 kB (35%)

Content Size

1.5 MB

After Optimization

952.9 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Jam.dev main page is 1.5 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. 65% of websites need less resources to load. HTML takes 726.3 kB which makes up the majority of the site volume.

HTML Optimization

-64%

Potential reduce by 464.3 kB

  • Original 726.3 kB
  • After minification 726.2 kB
  • After compression 262.0 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 464.3 kB or 64% 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 229 B

  • Original 375.6 kB
  • After minification 375.6 kB
  • After compression 375.4 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 17 (36%)

Requests Now

47

After Optimization

30

  • Images
  • JavaScript
  • CSS

The browser has sent 47 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 18 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

jam.dev

jam.dev

364 ms

uwt.js

uwt.js

39 ms

7add5c0f5636c0a2b16d.css

7add5c0f5636c0a2b16d.css

172 ms

cursor.webp

cursor.webp

334 ms

avatar.webp

avatar.webp

106 ms

screenshot-graphic.svg

screenshot-graphic.svg

139 ms

repro-steps-graphic.svg

repro-steps-graphic.svg

352 ms

ir-graphic.svg

ir-graphic.svg

317 ms

markup-graphic.svg

markup-graphic.svg

204 ms

slack-preview.webp

slack-preview.webp

311 ms

jira-preview.webp

jira-preview.webp

309 ms

michal-jarcsewski.webp

michal-jarcsewski.webp

314 ms

nitzan.webp

nitzan.webp

315 ms

trip-jagolta.webp

trip-jagolta.webp

340 ms

harry-kainth.webp

harry-kainth.webp

354 ms

mirjana-lipkovska.webp

mirjana-lipkovska.webp

392 ms

sunbal-hussain.webp

sunbal-hussain.webp

417 ms

business-smart-logo.webp

business-smart-logo.webp

409 ms

hussein-baashen.webp

hussein-baashen.webp

416 ms

nic-nuyten-avatar.png

nic-nuyten-avatar.png

439 ms

brady-burke-avatar.jpeg

brady-burke-avatar.jpeg

458 ms

groover-logo.png

groover-logo.png

505 ms

lucas-kostecki-avatar.png

lucas-kostecki-avatar.png

499 ms

jacob-kool.webp

jacob-kool.webp

517 ms

marvin-gonzalez.webp

marvin-gonzalez.webp

529 ms

polyfills-4b807e79471bfa329e5d.js

polyfills-4b807e79471bfa329e5d.js

677 ms

webpack-e35fe5f6a5f33d8da39a.js

webpack-e35fe5f6a5f33d8da39a.js

542 ms

framework-d53e9b9ac3e65c8eb841.js

framework-d53e9b9ac3e65c8eb841.js

596 ms

main-18932fd96295d047a66d.js

main-18932fd96295d047a66d.js

617 ms

_app-ca356f3d002d48377e13.js

_app-ca356f3d002d48377e13.js

601 ms

94726e6d-89a33c680415d086347c.js

94726e6d-89a33c680415d086347c.js

628 ms

7981-8286201f907ca06a5186.js

7981-8286201f907ca06a5186.js

673 ms

3627-a91018ffc80d81154aa6.js

3627-a91018ffc80d81154aa6.js

776 ms

4038-cff0fd8410af52d657f0.js

4038-cff0fd8410af52d657f0.js

777 ms

5301-dfe4079c774449455272.js

5301-dfe4079c774449455272.js

778 ms

9420-72cbe8ba62edc324c561.js

9420-72cbe8ba62edc324c561.js

777 ms

2542-c07f0041d00401be9b6d.js

2542-c07f0041d00401be9b6d.js

800 ms

5533-10218c10af305f88f39e.js

5533-10218c10af305f88f39e.js

840 ms

2211-dec64b8fded16620493d.js

2211-dec64b8fded16620493d.js

735 ms

index-0d14626eeaea37aac343.js

index-0d14626eeaea37aac343.js

694 ms

_buildManifest.js

_buildManifest.js

679 ms

_ssgManifest.js

_ssgManifest.js

637 ms

jam-rocket.svg

jam-rocket.svg

636 ms

twitter.svg

twitter.svg

629 ms

linkedin.svg

linkedin.svg

630 ms

OldschoolGrotesk_W-Regular.b9102e25e4b3e42aeb9c168634ba0ef5.woff

OldschoolGrotesk_W-Regular.b9102e25e4b3e42aeb9c168634ba0ef5.woff

647 ms

PAJJhLM6sSoWKfWCAAwDAjgbRAAB42mNgYGBkAIIbCZo5IPrmUn0hGA0AO8EFTQAA

PAJJhLM6sSoWKfWCAAwDAjgbRAAB42mNgYGBkAIIbCZo5IPrmUn0hGA0AO8EFTQAA

2 ms

OldschoolGrotesk_W-Medium.6443544aaa044229b168cd6d3b8e8887.woff

OldschoolGrotesk_W-Medium.6443544aaa044229b168cd6d3b8e8887.woff

631 ms

OldschoolGrotesk_W-Bold.90197dc122f3a9aace6b2214735aed43.woff

OldschoolGrotesk_W-Bold.90197dc122f3a9aace6b2214735aed43.woff

780 ms

OldschoolGrotesk_W-Heavy.94cdfa2bf61b9c7f7fb56643cf5acca9.woff

OldschoolGrotesk_W-Heavy.94cdfa2bf61b9c7f7fb56643cf5acca9.woff

702 ms

SFMonoMedium.00a97c563c44904eda7f1f4ff7806d68.otf

SFMonoMedium.00a97c563c44904eda7f1f4ff7806d68.otf

702 ms

SFMonoLight.4ffa474f6d18d1b7202181cf3bfff2bc.otf

SFMonoLight.4ffa474f6d18d1b7202181cf3bfff2bc.otf

677 ms

CourierPrime-Regular.7503a2e9660bb6f608fbbbb87cbfba8f.ttf

CourierPrime-Regular.7503a2e9660bb6f608fbbbb87cbfba8f.ttf

659 ms

instagram.svg

instagram.svg

672 ms

tiktok.svg

tiktok.svg

716 ms

youtube.svg

youtube.svg

717 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

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

jam.dev SEO score

83

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

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: