Fastly Polyfill
Fastly Polyfill is a service that reads the User-Agent header of each request and returns polyfills appropriate for the requesting browser.
According to our data, Fastly Polyfill ranks 100th among the JavaScript libraries we track.
It has 0.4% of the JavaScript library market share and is detected on 0.3% of all websites.
- 🏠 Website
- </> Source code
💸 Pricing
Fastly Polyfill is available for free.
📊 Rankings and Market Share
- JavaScript Libraries
- Rank: 100
- Market share: 0.4%
🏆 Fastly Polyfill Awards
- ⬆️ 71st most popular in New Zealand in the JavaScript Libraries category.
- ⬆️ 76th most popular in Canada in the JavaScript Libraries category.
- ⬆️ 77th most popular in Brazil in the JavaScript Libraries category.
- ⬆️ 78th most popular in Norway in the JavaScript Libraries category.
- ⬆️ 79th most popular in Israel in the JavaScript Libraries category.
- ⬆️ 80th most popular in Japan in the JavaScript Libraries category.
- ⬆️ 80th most popular in Australia in the JavaScript Libraries category.
- ⬆️ 84th most popular in Finland in the JavaScript Libraries category.
- ⬆️ 86th most popular in Switzerland in the JavaScript Libraries category.
- ⬆️ 86th most popular in Sweden in the JavaScript Libraries category.
⚡ Sites Using Fastly Polyfill
We have data on 9,347 websites that use the Fastly Polyfill JavaScript library. Here is a list of some of the top ranked ones.
The highest rated site using Fastly Polyfill is mi.com.
| # | Website | Rank | Country | Language |
|---|---|---|---|---|
| 1 | #182 | China | American English | |
| 2 | #544 | India | English | |
| 3 | #587 | United States | American English | |
| 4 |  iubenda.com |
#1,063 | Italy | American English |
| 5 |  laravel.com |
#2,213 | English | |
| 6 | #2,379 | English | ||
| 7 | #2,421 | Finland | Finnish | |
| 8 | #2,626 | United Kingdom | English | |
| 9 | #2,937 | Finland | Finnish | |
| 10 | #3,446 | English | ||
| 11 |  replit.com |
#3,607 | United States | English |
| 12 | #3,889 | United States | English | |
| 13 | kajabi.com | #6,034 | United States | English |
| 14 | #6,529 | English | ||
| 15 | #6,660 | American English | ||
| 16 | #6,800 | United Kingdom | English | |
| 17 | #7,124 | American English | ||
| 18 | #7,314 | United States | American English | |
| 19 | #7,509 | France | French | |
| 20 | #7,775 | Spain | Spanish |
📈 Usage Statistics
Most of the sites that use Fastly Polyfill:
- are located in the United States
- have content in English
- use the .com domain extension
- fall into the Online Shopping category.
Most of the sites using Fastly Polyfill are from the United States, the United Kingdom, and Japan.
- United States 22.9%
- United Kingdom 8.3%
- Japan 5.8%
- Germany 5.7%
- Australia 5.5%
- Brazil 5%
- Canada 4.6%
- France 3.6%
- India 3.4%
- Other 35.2%
Most Fastly Polyfill users speak English, German, or Japanese.
- English 69%
- German 5.4%
- Japanese 4%
- Portuguese 4%
- Spanish 3.7%
- French 3.2%
- Italian 1.9%
- Dutch 1.8%
- Swedish 0.8%
- Other 6.2%
The Fastly Polyfill JavaScript library is especially popular on .com and .org top-level domains.
- .com 55.4%
- .org 6.7%
- .co.uk 3%
- .de 2.8%
- .com.au 2.7%
- .com.br 2.7%
- .net 1.8%
- .ca 1.5%
- .ch 1.2%
- Other 22.2%
The primary market segments for websites utilizing Fastly Polyfill include online shopping, business, and marketing and merchandising.
- Online Shopping 18.5%
- Business 13.7%
- Marketing/Merchandising 12.9%
- Fashion/Beauty 6.3%
- General News 6%
- Education/Reference 5%
- Entertainment 5%
- Health 3.8%
- Blogs/Wiki 3.5%
- Other 25.3%
🕵️ Similar Technologies
These are some of the best Fastly Polyfill alternatives.
🆚 Compare Alternatives
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jQuery💬 Frequently Asked Questions
Is Fastly Polyfill free?
Yes, it is a free JavaScript library.
It is also an open-source solution and its code can be found on 
GitHub.
Which country uses Fastly Polyfill the most?
The majority of Fastly Polyfill users are from the United States.
Who uses Fastly Polyfill?
According to our data, Fastly Polyfill is used on thousands of sites, including such established ones as mi.com,
1mg.com, and
nintendo.com.
Is Fastly Polyfill used on government websites?
In total, we found Fastly Polyfill on 5 government sites in the United States.
Do academic institutions use Fastly Polyfill?
Yes. In total, we know of 15 academic websites in the United States that use Fastly Polyfill.
How does Fastly Polyfill stack up against its competitors?
Fastly Polyfill is a moderately popular JavaScript library, ranking ahead of 210 other JavaScript libraries we track.
What are the alternatives to Fastly Polyfill?
Alternatives and possible competitors to Fastly Polyfill may include 
Polyfill, 
Regenerator, and 
Babel.
👉 See Also
- ✨ Related technologies
JavaScript🗃️ About This Data
- We evaluate the popularity of technologies based on the number of websites where we detect their usage.
- Technologies without a detectable web footprint, and those we do not track, are not reflected in the calculated market share.
- This report is based on the analysis of 3,375,483 websites.
- Statistics were last calculated on .
- For more details, see our methodology and disclaimer.