Tools & Wizards About Us
door.ac screenshot

Report Summary

  • 29

    Performance

    Renders faster than
    48% of other websites

  • 84

    Accessibility

    Visual factors better than
    that of 56% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 96

    SEO

    Google-friendlier than
    90% of websites

door.ac

【DOOR賃貸】賃貸(賃貸マンション・アパート・戸建賃貸)のお部屋探し

Page Load Speed

4.9 sec in total

First Response

341 ms

Resources Loaded

4.1 sec

Page Rendered

460 ms

door.ac screenshot

About Website

Welcome to door.ac homepage info - get ready to check Door best content for Japan right away, or after learning these important things about door.ac

【入居祝金あり】賃貸マンション、アパート、戸建賃貸の物件情報が日本最大級の「DOOR賃貸」なら、敷礼なし、ワンルームなどのこだわり条件で理想の物件が見つかります。

Visit door.ac

Key Findings

We analyzed Door.ac page load time and found that the first response time was 341 ms and then it took 4.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

door.ac performance score

29

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.3 s

41/100

10%

LCP (Largest Contentful Paint)

Value4.7 s

33/100

25%

SI (Speed Index)

Value9.7 s

11/100

10%

TBT (Total Blocking Time)

Value3,350 ms

2/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value22.4 s

1/100

10%

Network Requests Diagram

door.ac

341 ms

door.ac

1023 ms

gtm.js

206 ms

application_pc-1a632008602211c2da603d5fb57a99b1f5f1c947675e95b5e2edd8d1359b4ee7.css

40 ms

application_pc-2d42ba47a1297ee906396df7759e9add589a3f0ec53acbfe717f21a958d31265.js

69 ms

Our browser made a total of 155 requests to load all elements on the main page. We found that 2% of them (3 requests) were addressed to the original Door.ac, 31% (48 requests) were made to Assets.door.ac and 5% (8 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (1 sec) relates to the external source S.yimg.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 332.2 kB (9%)

Content Size

3.7 MB

After Optimization

3.3 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Door.ac main page is 3.7 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. Images take 3.2 MB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 64.9 kB

  • Original 87.1 kB
  • After minification 86.8 kB
  • After compression 22.2 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 64.9 kB or 75% of the original size.

Image Optimization

-5%

Potential reduce by 164.1 kB

  • Original 3.2 MB
  • After minification 3.0 MB

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. Door images are well optimized though.

JavaScript Optimization

-30%

Potential reduce by 103.2 kB

  • Original 344.4 kB
  • After minification 342.3 kB
  • After compression 241.2 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 30% of the original size.

CSS Optimization

-0%

Potential reduce by 0 B

  • Original 83.9 kB
  • After minification 83.9 kB
  • After compression 83.9 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. Door.ac has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 96 (63%)

Requests Now

152

After Optimization

56

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 152 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Door. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 42 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

door.ac

door.ac

341 ms

door.ac

door.ac

1023 ms

gtm.js

gtm.js

206 ms

application_pc-1a632008602211c2da603d5fb57a99b1f5f1c947675e95b5e2edd8d1359b4ee7.css

application_pc-1a632008602211c2da603d5fb57a99b1f5f1c947675e95b5e2edd8d1359b4ee7.css

40 ms

application_pc-2d42ba47a1297ee906396df7759e9add589a3f0ec53acbfe717f21a958d31265.js

application_pc-2d42ba47a1297ee906396df7759e9add589a3f0ec53acbfe717f21a958d31265.js

69 ms

firebase-app.js

firebase-app.js

32 ms

firebase-messaging.js

firebase-messaging.js

39 ms

js.cookie.min.js

js.cookie.min.js

30 ms

j.php

j.php

237 ms

door_logo-4adfa16390c617000328008410f763356a5c7c340541b59ce6e75540338f8235.svg

door_logo-4adfa16390c617000328008410f763356a5c7c340541b59ce6e75540338f8235.svg

223 ms

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224 ms

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227 ms

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267 ms

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269 ms

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228 ms

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269 ms

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270 ms

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266 ms

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265 ms

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359 ms

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358 ms

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358 ms

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358 ms

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358 ms

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412 ms

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558 ms

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586 ms

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558 ms

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589 ms

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585 ms

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587 ms

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709 ms

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716 ms

img_feature63_hover-7051d304a71ba5b4d3a88372e452a3fb2360915225cb9427de017d964d6a475f.png

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709 ms

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715 ms

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714 ms

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716 ms

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766 ms

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777 ms

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843 ms

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844 ms

img_feature11_hover-d33909cd4c818aa416f441b4742508ed6f6e2e0ac0b23e85e09021126b0f7d35.png

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776 ms

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894 ms

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919 ms

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867 ms

ja.png

ja.png

457 ms

widgets.js

widgets.js

614 ms

sdk.js

sdk.js

309 ms

push-notification-icon.jpg

push-notification-icon.jpg

447 ms

ld.js

ld.js

448 ms

analytics.js

analytics.js

447 ms

ytag.js

ytag.js

1037 ms

destination

destination

148 ms

bat.js

bat.js

412 ms

destination

destination

223 ms

lt.js

lt.js

435 ms

VhqEtEEweN6s75l0jEFM.js

VhqEtEEweN6s75l0jEFM.js

565 ms

s_retargeting.js

s_retargeting.js

970 ms

pixel.js

pixel.js

405 ms

pixel2.js

pixel2.js

434 ms

pb_pixel2.js

pb_pixel2.js

404 ms

vts2.js

vts2.js

433 ms

fbevents.js

fbevents.js

432 ms

index.js

index.js

963 ms

csslp.js

csslp.js

428 ms

itm.js

itm.js

738 ms

js

js

211 ms

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701 ms

v.gif

v.gif

44 ms

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706 ms

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705 ms

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691 ms

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670 ms

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666 ms

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688 ms

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682 ms

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671 ms

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669 ms

sdk.js

sdk.js

305 ms

p

p

881 ms

smallest.png

smallest.png

357 ms

smallest.png

smallest.png

366 ms

p

p

905 ms

27027304.js

27027304.js

188 ms

err.gif

err.gif

849 ms

js

js

172 ms

collect

collect

112 ms

err.gif

err.gif

810 ms

err.gif

err.gif

810 ms

err.gif

err.gif

810 ms

syncframe

syncframe

273 ms

widget_iframe.2f70fb173b9000da126c79afe2098f02.html

widget_iframe.2f70fb173b9000da126c79afe2098f02.html

186 ms

191 ms

collect

collect

159 ms

27027304

27027304

190 ms

script.js

script.js

910 ms

segment

segment

305 ms

settings

settings

79 ms

clarity.js

clarity.js

6 ms

button.856debeac157d9669cf51e73a08fbc93.js

button.856debeac157d9669cf51e73a08fbc93.js

23 ms

embeds

embeds

23 ms

follow_button.2f70fb173b9000da126c79afe2098f02.ja.html

follow_button.2f70fb173b9000da126c79afe2098f02.ja.html

37 ms

gtm.js

gtm.js

59 ms

destination

destination

52 ms

315 ms

beacon.gif

beacon.gif

314 ms

beacon.html

beacon.html

164 ms

fraud

fraud

319 ms

log.js

log.js

12 ms

449 ms

tracker

tracker

241 ms

collect

collect

263 ms

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124 ms

pixel

pixel

195 ms

pixel

pixel

184 ms

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77 ms

iframe

iframe

200 ms

iframe

iframe

186 ms

Pug

Pug

90 ms

hs

hs

803 ms

sync.ad-stir.com

sync.ad-stir.com

687 ms

tap.php

tap.php

122 ms

sync

sync

786 ms

135 ms

cookiesync

cookiesync

691 ms

cs

cs

718 ms

sync.ad

sync.ad

299 ms

cs

cs

665 ms

sync

sync

285 ms

sync

sync

118 ms

tap.php

tap.php

127 ms

sync

sync

130 ms

sync.ad

sync.ad

293 ms

pixel

pixel

134 ms

cs

cs

736 ms

sync

sync

282 ms

cs

cs

690 ms

sync.ad-stir.com

sync.ad-stir.com

694 ms

Pug

Pug

110 ms

cookiesync

cookiesync

693 ms

125 ms

hs

hs

832 ms

google

google

171 ms

google

google

178 ms

bounce

bounce

10 ms

bounce

bounce

11 ms

sync

sync

17 ms

sync

sync

17 ms

sd

sd

32 ms

sd

sd

7 ms

like.php

like.php

109 ms

destination

destination

43 ms

c.gif

c.gif

8 ms

syD5r58azVO.js

syD5r58azVO.js

31 ms

FEppCFCt76d.png

FEppCFCt76d.png

21 ms

Accessibility Review

door.ac accessibility score

84

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

door.ac 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

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

door.ac SEO score

96

Search Engine Optimization Advices

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

    JA

  • Language Claimed

    JA

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Door.ac can be misinterpreted by Google and other search engines. Our service has detected that Japanese is used on the page, and it matches the claimed language. Our system also found out that Door.ac 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

door.ac

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