Tools & Wizards About Us
booking.vn screenshot

Report Summary

  • 17

    Performance

    Renders faster than
    32% of other websites

  • 93

    Accessibility

    Visual factors better than
    that of 80% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 90

    SEO

    Google-friendlier than
    68% of websites

booking.vn

Booking.com | Official site | The best hotels, flights, car rentals & accommodations

Page Load Speed

3 sec in total

First Response

163 ms

Resources Loaded

2.3 sec

Page Rendered

484 ms

booking.vn screenshot

About Website

Visit booking.vn now to see the best up-to-date Booking content and also check out these interesting facts you probably never knew about booking.vn

Explore the world with Booking.com. Big savings on homes, hotels, flights, car rentals, taxis, and attractions – build your perfect trip on any budget.

Visit booking.vn

Key Findings

We analyzed Booking.vn page load time and found that the first response time was 163 ms and then it took 2.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

booking.vn performance score

17

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.2 s

19/100

10%

LCP (Largest Contentful Paint)

Value19.6 s

0/100

25%

SI (Speed Index)

Value13.4 s

2/100

10%

TBT (Total Blocking Time)

Value7,070 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value36.3 s

0/100

10%

Network Requests Diagram

booking.vn

163 ms

index.en-gb.html

1164 ms

cookie-banner.min.js

19 ms

2454015045ef79168d452ff4e7f30bdadff0aa81.js

22 ms

1c7a18e763aebb5ce09f31e59af1e8d8f6e925f5.css

31 ms

Our browser made a total of 140 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Booking.vn, 91% (127 requests) were made to Cf.bstatic.com and 4% (5 requests) were made to T-cf.bstatic.com. The less responsive or slowest element that took the longest time to load (1.2 sec) relates to the external source Booking.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.1 MB (21%)

Content Size

5.1 MB

After Optimization

4.0 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Booking.vn main page is 5.1 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 a small number of websites need less resources to load. Javascripts take 3.4 MB which makes up the majority of the site volume.

HTML Optimization

-73%

Potential reduce by 461.3 kB

  • Original 634.8 kB
  • After minification 634.1 kB
  • After compression 173.5 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 461.3 kB or 73% of the original size.

Image Optimization

-2%

Potential reduce by 18.6 kB

  • Original 843.7 kB
  • After minification 825.1 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. Booking images are well optimized though.

JavaScript Optimization

-17%

Potential reduce by 587.4 kB

  • Original 3.4 MB
  • After minification 3.4 MB
  • After compression 2.8 MB

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 587.4 kB or 17% of the original size.

CSS Optimization

-4%

Potential reduce by 8.5 kB

  • Original 216.7 kB
  • After minification 215.1 kB
  • After compression 208.2 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. Booking.vn has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 109 (79%)

Requests Now

138

After Optimization

29

  • Images
  • JavaScript
  • CSS

The browser has sent 138 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Booking. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 68 to 1 for JavaScripts and from 43 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

booking.vn

booking.vn

163 ms

index.en-gb.html

index.en-gb.html

1164 ms

cookie-banner.min.js

cookie-banner.min.js

19 ms

2454015045ef79168d452ff4e7f30bdadff0aa81.js

2454015045ef79168d452ff4e7f30bdadff0aa81.js

22 ms

1c7a18e763aebb5ce09f31e59af1e8d8f6e925f5.css

1c7a18e763aebb5ce09f31e59af1e8d8f6e925f5.css

31 ms

22870d2036e5b5667d39fb7d0c2c8e937d5d2a13.css

22870d2036e5b5667d39fb7d0c2c8e937d5d2a13.css

26 ms

308436ca26aacf6a7553e4c0cf298d0f780727a2.css

308436ca26aacf6a7553e4c0cf298d0f780727a2.css

24 ms

5b5ab8ab66a5ce3092875d0725122439c4f2dfdd.css

5b5ab8ab66a5ce3092875d0725122439c4f2dfdd.css

24 ms

f1558a6e9832a4eb8cfe1d3d14db176bd3564335.css

f1558a6e9832a4eb8cfe1d3d14db176bd3564335.css

24 ms

b14ffeed1466df127d194be5a63782d4eca33d2b.css

b14ffeed1466df127d194be5a63782d4eca33d2b.css

27 ms

77204d4da4aa41b08b1a4062c8e66e4629550994.js

77204d4da4aa41b08b1a4062c8e66e4629550994.js

87 ms

bui-react-10.c420aaa2.css

bui-react-10.c420aaa2.css

36 ms

bui-react-10.fbd3f9fd.css

bui-react-10.fbd3f9fd.css

23 ms

bui-react-10.76b1441a.css

bui-react-10.76b1441a.css

29 ms

bui-react-10.cc1a2f03.css

bui-react-10.cc1a2f03.css

45 ms

client.086fb182.css

client.086fb182.css

64 ms

97a643cd.36b9d962.chunk.css

97a643cd.36b9d962.chunk.css

35 ms

5638344d.590b869f.chunk.css

5638344d.590b869f.chunk.css

53 ms

782ad794.1d8387c3.chunk.css

782ad794.1d8387c3.chunk.css

54 ms

ace575b5.3ea391aa.chunk.css

ace575b5.3ea391aa.chunk.css

53 ms

f141039c.de63d3a6.chunk.css

f141039c.de63d3a6.chunk.css

54 ms

9214bfa8.76fa4945.chunk.css

9214bfa8.76fa4945.chunk.css

52 ms

f41dcaf5.5f39ca2c.chunk.css

f41dcaf5.5f39ca2c.chunk.css

57 ms

6b631c3f.181f477f.chunk.css

6b631c3f.181f477f.chunk.css

55 ms

63bff8e9.90b5ddad.chunk.css

63bff8e9.90b5ddad.chunk.css

54 ms

59306dc3.04fde248.chunk.css

59306dc3.04fde248.chunk.css

57 ms

5f127cf4.233b280c.chunk.css

5f127cf4.233b280c.chunk.css

54 ms

282e5b08.6944de76.chunk.css

282e5b08.6944de76.chunk.css

60 ms

5b1239aa.aa747888.chunk.css

5b1239aa.aa747888.chunk.css

60 ms

2c6b580e.0f6ccca9.chunk.css

2c6b580e.0f6ccca9.chunk.css

62 ms

95a17449.5d55300b.chunk.css

95a17449.5d55300b.chunk.css

62 ms

7943e0ea.901fff5f.chunk.css

7943e0ea.901fff5f.chunk.css

61 ms

d8454389.6c5951cd.chunk.css

d8454389.6c5951cd.chunk.css

72 ms

c8637181.a07c7242.chunk.css

c8637181.a07c7242.chunk.css

68 ms

ce4afa91.927ca964.chunk.css

ce4afa91.927ca964.chunk.css

64 ms

d9560671.b4c80676.chunk.css

d9560671.b4c80676.chunk.css

64 ms

b9a82cb8.51b772b4.chunk.css

b9a82cb8.51b772b4.chunk.css

62 ms

cf2b0303.07149e19.chunk.css

cf2b0303.07149e19.chunk.css

66 ms

dc32f6b7.87b74b4f.chunk.css

dc32f6b7.87b74b4f.chunk.css

69 ms

18cad957.74a6c7f6.chunk.css

18cad957.74a6c7f6.chunk.css

69 ms

8067d7e4.74a6c7f6.chunk.css

8067d7e4.74a6c7f6.chunk.css

68 ms

09fb2abd.0a49e52d.chunk.css

09fb2abd.0a49e52d.chunk.css

72 ms

da3d7717.02102274.chunk.css

da3d7717.02102274.chunk.css

72 ms

ebf8c3e3.6f0a5d8c.chunk.css

ebf8c3e3.6f0a5d8c.chunk.css

73 ms

3c29a897.9ece6ffb.chunk.css

3c29a897.9ece6ffb.chunk.css

76 ms

0d919837.c55d3a4b.chunk.css

0d919837.c55d3a4b.chunk.css

77 ms

27bbaa9c.64c45311.chunk.css

27bbaa9c.64c45311.chunk.css

75 ms

gpt.js

gpt.js

150 ms

7e8161ba.6575fef7.chunk.css

7e8161ba.6575fef7.chunk.css

52 ms

0acd2ada6c74d5dec978a04ea837952bdf050cd2.js

0acd2ada6c74d5dec978a04ea837952bdf050cd2.js

70 ms

e1e8c0e862309cb4caf3c0d5fbea48bfb8eaad42.js

e1e8c0e862309cb4caf3c0d5fbea48bfb8eaad42.js

66 ms

f62025e692b596dd53ecd1bd082dfd3197944c50.js

f62025e692b596dd53ecd1bd082dfd3197944c50.js

57 ms

b18b076010d5ee8178415747e3c7e6a3a6f14302.js

b18b076010d5ee8178415747e3c7e6a3a6f14302.js

102 ms

1b7ad23c57ef9adf3f14622c75ac1fc03729d077.js

1b7ad23c57ef9adf3f14622c75ac1fc03729d077.js

52 ms

f1c8c212c0149249fef02a562a6669d167bc56bc.js

f1c8c212c0149249fef02a562a6669d167bc56bc.js

98 ms

aae975495cc56436f4f59463b9ea4e594bdb102a.js

aae975495cc56436f4f59463b9ea4e594bdb102a.js

57 ms

1d69e13e40d03fc59f58d76b31735d5d8c37416a.js

1d69e13e40d03fc59f58d76b31735d5d8c37416a.js

56 ms

3ae2aaac8c7322f2908109b6a9e7446001225f2b.js

3ae2aaac8c7322f2908109b6a9e7446001225f2b.js

95 ms

8c409b90db8d2ce96d4f48a8b2eca3f43a705428.js

8c409b90db8d2ce96d4f48a8b2eca3f43a705428.js

98 ms

bb527f09bccbc2a4a742f009d936be46fae8a613.js

bb527f09bccbc2a4a742f009d936be46fae8a613.js

93 ms

bui-react-10.b7d83195.js

bui-react-10.b7d83195.js

95 ms

bui-react-10.ffe2bb5b.js

bui-react-10.ffe2bb5b.js

106 ms

bui-react-10.ad5d3f46.js

bui-react-10.ad5d3f46.js

95 ms

bui-react-10.a9a5a8fd.js

bui-react-10.a9a5a8fd.js

94 ms

bui-react-10.24230d4c.js

bui-react-10.24230d4c.js

95 ms

bui-react-10.399bb1ba.js

bui-react-10.399bb1ba.js

95 ms

bui-react-10.d27a7a9b.js

bui-react-10.d27a7a9b.js

95 ms

remoteEntry.47f3979e.client.js

remoteEntry.47f3979e.client.js

99 ms

b9a82cb8.7c2a4e6d.chunk.js

b9a82cb8.7c2a4e6d.chunk.js

98 ms

cf2b0303.aa365769.chunk.js

cf2b0303.aa365769.chunk.js

97 ms

dc32f6b7.bbcbb17a.chunk.js

dc32f6b7.bbcbb17a.chunk.js

207 ms

remoteEntry.80362d78.client.js

remoteEntry.80362d78.client.js

97 ms

remoteEntry.4ac216d2.client.js

remoteEntry.4ac216d2.client.js

208 ms

18cad957.31ce4ff5.chunk.js

18cad957.31ce4ff5.chunk.js

204 ms

8067d7e4.34e34b47.chunk.js

8067d7e4.34e34b47.chunk.js

202 ms

remoteEntry.887c2faa.client.js

remoteEntry.887c2faa.client.js

204 ms

09fb2abd.7b46dd66.chunk.js

09fb2abd.7b46dd66.chunk.js

206 ms

remoteEntry.da1cd6c3.client.js

remoteEntry.da1cd6c3.client.js

204 ms

da3d7717.44130389.chunk.js

da3d7717.44130389.chunk.js

306 ms

ebf8c3e3.cfad0be8.chunk.js

ebf8c3e3.cfad0be8.chunk.js

304 ms

3c29a897.1dd3a2ac.chunk.js

3c29a897.1dd3a2ac.chunk.js

302 ms

remoteEntry.54dee2c4.client.js

remoteEntry.54dee2c4.client.js

300 ms

0d919837.bb73d805.chunk.js

0d919837.bb73d805.chunk.js

337 ms

remoteEntry.083e531b.client.js

remoteEntry.083e531b.client.js

331 ms

Gb@3x.png

Gb@3x.png

182 ms

363658458.jpeg

363658458.jpeg

284 ms

184698944.png

184698944.png

180 ms

350960127.jpeg

350960127.jpeg

315 ms

bh_aw_cpg_main_image.b4347622.png

bh_aw_cpg_main_image.b4347622.png

384 ms

FreeCancellation.png

FreeCancellation.png

307 ms

TripsGlobe.png

TripsGlobe.png

317 ms

CustomerSupport.png

CustomerSupport.png

378 ms

GeniusGenericGiftBox.png

GeniusGenericGiftBox.png

380 ms

27bbaa9c.c5aacec8.chunk.js

27bbaa9c.c5aacec8.chunk.js

313 ms

remoteEntry.c78a4bf4.client.js

remoteEntry.c78a4bf4.client.js

311 ms

7e8161ba.d55ad923.chunk.js

7e8161ba.d55ad923.chunk.js

309 ms

bui-react-10.f57b971e.js

bui-react-10.f57b971e.js

376 ms

client.f25b5f4c.js

client.f25b5f4c.js

379 ms

4a89d2db.6c0ec4b3.chunk.js

4a89d2db.6c0ec4b3.chunk.js

372 ms

0a098284.ac996a30.chunk.js

0a098284.ac996a30.chunk.js

335 ms

97a643cd.01d32545.chunk.js

97a643cd.01d32545.chunk.js

332 ms

5638344d.48def8cd.chunk.js

5638344d.48def8cd.chunk.js

334 ms

782ad794.2279ec04.chunk.js

782ad794.2279ec04.chunk.js

333 ms

ace575b5.e6e109ad.chunk.js

ace575b5.e6e109ad.chunk.js

334 ms

f141039c.6efdff7f.chunk.js

f141039c.6efdff7f.chunk.js

333 ms

9214bfa8.8488bf3c.chunk.js

9214bfa8.8488bf3c.chunk.js

333 ms

f41dcaf5.16101826.chunk.js

f41dcaf5.16101826.chunk.js

332 ms

6b631c3f.a0188197.chunk.js

6b631c3f.a0188197.chunk.js

331 ms

63bff8e9.f5f16a6e.chunk.js

63bff8e9.f5f16a6e.chunk.js

331 ms

59306dc3.8579a61a.chunk.js

59306dc3.8579a61a.chunk.js

334 ms

5f127cf4.8076c995.chunk.js

5f127cf4.8076c995.chunk.js

330 ms

282e5b08.d2bd25e8.chunk.js

282e5b08.d2bd25e8.chunk.js

330 ms

5b1239aa.2d9acac5.chunk.js

5b1239aa.2d9acac5.chunk.js

330 ms

2c6b580e.60a64de6.chunk.js

2c6b580e.60a64de6.chunk.js

330 ms

95a17449.58b82363.chunk.js

95a17449.58b82363.chunk.js

328 ms

pubads_impl.js

pubads_impl.js

167 ms

7943e0ea.fcef7e8d.chunk.js

7943e0ea.fcef7e8d.chunk.js

236 ms

d8454389.f0e2dabc.chunk.js

d8454389.f0e2dabc.chunk.js

222 ms

c8637181.19393fad.chunk.js

c8637181.19393fad.chunk.js

221 ms

ce4afa91.c6cb5ba6.chunk.js

ce4afa91.c6cb5ba6.chunk.js

216 ms

d9560671.8b0e4ffa.chunk.js

d9560671.8b0e4ffa.chunk.js

221 ms

b700d9e3067c1186a3364012df4fe1c48ae6da44.png

b700d9e3067c1186a3364012df4fe1c48ae6da44.png

216 ms

976919.jpg

976919.jpg

219 ms

977409.jpg

977409.jpg

119 ms

977437.jpg

977437.jpg

123 ms

976708.jpg

976708.jpg

120 ms

976884.jpg

976884.jpg

117 ms

292260574.jpg

292260574.jpg

122 ms

promise-7.0.4.min.js

promise-7.0.4.min.js

88 ms

290483794.jpg

290483794.jpg

89 ms

289320924.jpg

289320924.jpg

86 ms

288594543.jpg

288594543.jpg

89 ms

27c8d1832de6a3123b6ee45b59ae2f81b0d9d0d0.png

27c8d1832de6a3123b6ee45b59ae2f81b0d9d0d0.png

87 ms

f80e129541f2a952d470df2447373390f3dd4e44.png

f80e129541f2a952d470df2447373390f3dd4e44.png

93 ms

83ef7122074473a6566094e957ff834badb58ce6.png

83ef7122074473a6566094e957ff834badb58ce6.png

94 ms

1c9191b6a3651bf030e41e99a153b64f449845ed.png

1c9191b6a3651bf030e41e99a153b64f449845ed.png

93 ms

a4b50503eda6c15773d6e61c238230eb42fb050d.png

a4b50503eda6c15773d6e61c238230eb42fb050d.png

93 ms

d59400a9e3fb1de83d0ecf952eef4e894acabc26.png

d59400a9e3fb1de83d0ecf952eef4e894acabc26.png

93 ms

3753f376f8fe37059e84a3ac3aa13cb5cbc459e1.png

3753f376f8fe37059e84a3ac3aa13cb5cbc459e1.png

40 ms

dc92020627f8ae26a5d6727cef75c82262923859.png

dc92020627f8ae26a5d6727cef75c82262923859.png

39 ms

Accessibility Review

booking.vn accessibility score

93

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-*] attributes do not have valid values

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

booking.vn best practices score

83

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

Missing source maps for large first-party JavaScript

SEO Factors

booking.vn SEO score

90

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

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Booking.vn 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 Booking.vn 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

booking.vn

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