Lazysizes

Berlin, Germany

Lazysizes is a fast lazy loader library for images, iframes, and scripts/widgets.

According to our data, Lazysizes ranks 29th among the JavaScript libraries we track.
It has 3.8% of the JavaScript library market share and is present on 2.7% of all websites.

💸 Pricing

Lazysizes is available for free.

Free ✔️Open source

📊 Rankings and Market Share

🏆 Lazysizes Awards

⚡ Sites Using Lazysizes

We have data on 91,289 websites that use the Lazysizes JavaScript library. Here is a list of some of the top ranked ones.

The highest rated site using Lazysizes is instructure.com.

#WebsiteRankCountryLanguage
1 instructure.com #52 United States English
2 espn.com #141 English
3 jotform.com #173 United States English
4 repubblica.it #296 Italy Italian
5 gamer.com.tw #350 Taiwan Chinese
6 franceinfo.fr #384 France French
7 blic.rs #430 Serbia Serbian
8 cmoa.jp #440 Japan Japanese
9 sxyprn.com #479 English
10 ixl.com #484 American English
11 jutarnji.hr #499 Croatia Croatian
12 aajtak.in #601 India Hindi
13 championat.com #650 Russia Russian
14 coolmathgames.com #699 English
15 xxxpostpic.org #705 Thailand Thai
16 broxxx.com #838 United States English
17 botinok.p**n #944 Netherlands Russian
18 cloudinary.com #1,359 English
19 schwab.com #1,482 United States English
20 macrumors.com #1,546 United States English

📈 Usage Statistics

Most of the sites that use Lazysizes:

Most of the sites using Lazysizes are from the United States, Japan, and the United Kingdom.

  • United States 17.2%
  • Japan 11.1%
  • United Kingdom 6.9%
  • Germany 6.5%
  • Italy 4.2%
  • France 3.6%
  • Spain 3.6%
  • Australia 3.2%
  • Russia 3%
  • Other 40.7%

Most Lazysizes users speak English, Japanese, or German.

  • English 51.6%
  • Japanese 9.3%
  • German 6%
  • Spanish 6%
  • French 3.3%
  • Italian 3.3%
  • Russian 3.1%
  • Portuguese 2.5%
  • Dutch 2.1%
  • Other 12.8%

The Lazysizes JavaScript library is especially popular on .com top-level domains.

  • .com 47.7%
  • .org 4.5%
  • .de 3.9%
  • .net 2.6%
  • .jp 2.5%
  • .co.uk 2.5%
  • .it 2.3%
  • .ru 2%
  • .com.au 1.8%
  • Other 30.2%

The primary market segments for websites utilizing Lazysizes include business, online shopping, and marketing and merchandising.

  • Business 16.1%
  • Online Shopping 14.5%
  • Marketing/Merchandising 11%
  • Blogs/Wiki 6.3%
  • Education/Reference 4.7%
  • Internet Services 4.3%
  • Fashion/Beauty 4.2%
  • Travel 4.2%
  • Entertainment 4%
  • Other 30.7%

🔢 Lazysizes Versions

The most common version of Lazysizes is 5.3, used by 51.8% of sites where versions were detected. In addition, 14.3% of sites use Lazysizes 5.1, and 12.1% use Lazysizes 4.1.

  • 5.3 51.8%
  • 5.1 14.3%
  • 4.1 12.1%
  • 5.2 11.3%
  • 4.0 5.5%
  • 2.0 2%
  • 3.0 1.3%
  • 8.0 0.6%
  • 5 0.4%
  • Other 0.7%

🕵️ Similar Technologies

These are some of the best Lazysizes alternatives.

RankName
18
Vanilla LazyLoad

A lightweight and flexible script that speeds up your web application by delaying the loading of your below-the-fold images, videos and iframes until they enter the viewport.

FreeOpen source
21
Lozad.js
New Delhi, India

Highly performant, light and configurable lazy loader for images and iframes in pure JS with no dependencies.

FreeOpen source
25
Beasties
Edinburgh, United Kingdom

A plugin that inlines your app's critical CSS and lazy-loads the rest.

FreeOpen source
27
Partytown
San Francisco, California, United States

A lazy-loaded library to help relocate resource intensive scripts into a web worker, and off of the main thread.

FreeOpen source
192
iframe-resizer

Library resizes iframes to fit the size of the content.

FreeOpen source$16+

🆚 Compare Alternatives

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💬 Frequently Asked Questions

Where is Lazysizes's headquarters?

Lazysizes is located in Berlin, Germany.

Can I use Lazysizes for free?

Yes, it is a free JavaScript library.

Which country uses Lazysizes the most?

The majority of Lazysizes users are from the United States.

Who uses Lazysizes?

According to our data, Lazysizes is used on thousands of sites, including such established ones as instructure.com, espn.com, and jotform.com.

Is Lazysizes used on government websites?

Overall, we found Lazysizes on 25 government sites in the United States.

Do academic institutions use Lazysizes?

Yes, quite a few! In total, we know of 134 academic websites in the United States that use Lazysizes.

How does Lazysizes stack up against the competition?

Lazysizes is a fairly popular JavaScript library, ranking ahead of 281 other JavaScript libraries we track.

What are the alternatives to Lazysizes?

Alternatives and possible competitors to Lazysizes may include Vanilla LazyLoad, Lozad.js, and Beasties.

Statistics were last calculated on .
For details, see our methodology and disclaimer.