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 117th among the JavaScript libraries we track.
It has 0.3% of the JavaScript library market share and is detected on 0.2% of all websites.
It appears on 0.3% of all websites in Canada, 0.3% in Australia, and 0.3% in Brazil.
- 🏠 Website
- </> Source code
💸 Pricing
Fastly Polyfill is available for free.
📊 Rankings and Market Share
- JavaScript Libraries
- Rank: 117
- Market share: 0.3%
🏆 Fastly Polyfill Awards
- ⬆️ 86th most popular in Canada in the JavaScript Libraries category.
- ⬆️ 91st most popular in Norway in the JavaScript Libraries category.
- ⬆️ 92nd most popular in Australia in the JavaScript Libraries category.
- ⬆️ 92nd most popular in Sweden in the JavaScript Libraries category.
- ⬆️ 98th most popular in Denmark in the JavaScript Libraries category.
- ⬆️ 99th most popular in the United States in the JavaScript Libraries category.
- ⬆️ 100th most popular in Finland in the JavaScript Libraries category.
- ⬆️ 100th most popular in Singapore in the JavaScript Libraries category.
- ⬆️ 103rd most popular in the United Kingdom in the JavaScript Libraries category.
- ⬆️ 103rd most popular in Brazil in the JavaScript Libraries category.
⚡ Sites Using Fastly Polyfill
We have data on 7,364 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 | #229 | China | American English | |
| 2 | #266 | United States | American English | |
| 3 | #628 | India | English | |
| 4 | #1,614 | United States | English | |
| 5 |  replit.com |
#1,823 | United States | English |
| 6 | #2,064 | United States | American English | |
| 7 | #2,720 | Finland | Finnish | |
| 8 | #2,779 | English | ||
| 9 | #3,748 | Finland | Finnish | |
| 10 | #4,133 | Italy | Italian | |
| 11 | #5,499 | France | French | |
| 12 |  acquia.com |
#6,566 | United States | English |
| 13 |  deliveroo.co.uk |
#7,410 | United Kingdom | English |
| 14 | #7,756 | New Zealand | English | |
| 15 | #8,149 | Brazil | Brazilian Portuguese | |
| 16 | #8,166 | English | ||
| 17 | #8,659 | English | ||
| 18 | #8,816 | English | ||
| 19 | #11,461 | United States | English | |
| 20 |  sinch.com |
#11,565 | Sweden | American English |
📈 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 Canada.
- United States 30.8%
- United Kingdom 8.7%
- Canada 5%
- Australia 5%
- Japan 4.5%
- Germany 4.4%
- Brazil 4.3%
- India 3.8%
- France 2.7%
- Other 30.8%
Most Fastly Polyfill users speak English, German, or Spanish.
- English 73.6%
- German 3.8%
- Spanish 3.7%
- Portuguese 3.5%
- Japanese 3.1%
- French 2.8%
- Dutch 1.4%
- Italian 1.4%
- Swedish 0.9%
- Other 5.8%
The Fastly Polyfill JavaScript library is especially popular on .com top-level domains.
- .com 61.1%
- .org 3.2%
- .co.uk 3.1%
- .com.br 2.6%
- .com.au 2.4%
- .de 2.2%
- .ca 1.8%
- .net 1.3%
- .jp 1%
- Other 21.3%
The primary market segments for websites utilizing Fastly Polyfill include online shopping, marketing and merchandising, and business.
- Online Shopping 22.9%
- Marketing/Merchandising 12.7%
- Business 12.1%
- Fashion/Beauty 7.5%
- General News 6.6%
- Education/Reference 4.4%
- Blogs/Wiki 4.1%
- Entertainment 3.8%
- Health 3.6%
- Other 22.3%
🕵️ Similar Technologies
These are some of the best Fastly Polyfill alternatives.
🆚 Compare Alternatives
Compare Fastly Polyfill to…
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💬 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,
nintendo.com, and
1mg.com.
Is Fastly Polyfill used on government websites?
In total, we found Fastly Polyfill on 3 government sites in the United States.
Do academic institutions use Fastly Polyfill?
Yes. The most prominent of these is wgtn.ac.nz. In total, we know of 12 academic websites in the United States that use Fastly Polyfill.
How does Fastly Polyfill compare to its competitors?
Fastly Polyfill is a moderately popular JavaScript library, ranking ahead of 200 other JavaScript libraries we track.
What are the alternatives to Fastly Polyfill?
Alternatives and possible competitors to Fastly Polyfill may include 
Regenerator, 
Babel, and 
Polyfill.
👉 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 4,001,723 websites.
- Statistics were last calculated on .
- For more details, see our methodology and disclaimer.