Www2.purpleair.com - SEO Checker

Overview of the SEO Check
Meta information
79% 
Page quality
78% 
Page structure
79% 
Link structure
57% 
Server
100% 
External factors
100% 
SEO Score
Response time
0.14 s
File size
130.00 kB
Words
576
Media files
26
Number of links
51 internal / 57 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Real-time Air Quality Monitoring by PurpleAir
The length of the page title is perfect. (399 pixels out of 580 max pixel length)
There are no duplicate words in the title
Meta description
(Critically important)
Hyper-local, real-time, public air quality map. Visualize PM2.5 AQI in your area for free. Useful to community scientists or air quality professionals alike, PurpleAir sensors are easy to install, requiring only a power outlet and WiFi.
The meta description is too long: 1402 pixels from max. 1000 pixels. Optimize description
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
https://www2.purpleair.com/
There is a valid canonical link specified.
Language
(Somewhat important)
Language detected in text: en
Language defined in HTML: en
Server location: United States of America
The following language is defined by HTML: en
Alternate/Hreflang Links
(Somewhat important)
There are no alternate links specified on this page.
Other meta tags
(Somewhat important)
There is no rel next meta tag on this page.
There is no rel prev meta tag on this page.
Domain
(Somewhat important)
This page is hosted on a subdomain. Use a top level domain for better SEO results.
The domain does not contain non-latin characters.
Page URL
(Somewhat important)
No parameters were found in the URL.
No session ID was found in the URL.
The URL does not have too many subdirectories.
Charset encoding
(Somewhat important)
The charset encoding (UTF-8) is set correctly.
Doctype
(Nice to have)
The doctype HTML 5 is set correctly.
The doctype is placed at first in the HTML code.
Favicon
(Nice to have)
The favicon is linked correctly.

Meta tags

NameValue
viewportwidth=device-width,initial-scale=1
theme-color#aa44aa
descriptionHyper-local, real-time, public air quality map. Visualize PM2.5 AQI in your area for free. Useful to community scientists or air quality professionals alike, PurpleAir sensors are easy to install, requiring only a power outlet and WiFi.
google-site-verificationhPuACnjKxzuRsIVQ51AJqR43oCNhn8GsdGdFv6m6mxg
facebook-domain-verification828gfodr7r3p9jyf0hqpup8ls4r1xv
shopify-digital-wallet/8055521377/digital_wallets/dialog
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langen
twitter:cardsummary_large_image
twitter:titleReal-time Air Quality Monitoring by PurpleAir
twitter:descriptionHyper-local, real-time, public air quality map. Visualize PM2.5 AQI in your area for free. Useful to community scientists or air quality professionals alike, PurpleAir sensors are easy to install, requiring only a power outlet and WiFi.
og:site_namePurpleAir, Inc.
og:urlhttps://www2.purpleair.com/
og:titleReal-time Air Quality Monitoring by PurpleAir
og:typewebsite
og:descriptionHyper-local, real-time, public air quality map. Visualize PM2.5 AQI in your area for free. Useful to community scientists or air quality professionals alike, PurpleAir sensors are easy to install, requiring only a power outlet and WiFi.
og:imagehttps://cdn.shopify.com/s/files/1/0080/5552/1377/files/logo_purple_branded.png?height=628&pad_color=ffffff&v=1614297769&width=1200
og:image:secure_urlhttps://cdn.shopify.com/s/files/1/0080/5552/1377/files/logo_purple_branded.png?height=628&pad_color=ffffff&v=1614297769&width=1200
og:image:width1200
og:image:height628
X-UA-CompatibleIE=edge,chrome=1
charsetutf-8

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Page quality

Content
(Critically important)
Some words from the page title are not used within the pages content
This page contains 576 words. That's ok.
23.6% of the text are stop words.
The page contains a listing, which indicates a good text layout.
7 paragraphs were found on this page.
No placeholders texts or images were found.
There are no duplicates on the site.
The average number of words per sentence of 11.75 words is good.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
No Apple touch icon is specified.
A viewport "width=device-width,initial-scale=1" is provided.
Bold and strong tags
(Somewhat important)
The usage of strong and bold tags is perfect. We recommend the use of up to 12 tags for this page.
Image SEO
(Somewhat important)
3 images have no alt attribute. The content of alt attributes is used by search engines.
Social Networks
(Nice to have)
There are only a few social sharing widgets on the page. Make your website popular in social networks with social sharing widgets.
Additional markup
(Nice to have)
No additional page markup was found.
HTTPS
(Somewhat important)
This website uses HTTPS to protect privacy and integrity of the exchanged data.
All included files are also transferred via HTTPS.

Media list

URLAlt attributeTitle
...0px_width_white_300x300.png?v=1699468497PurpleAir, Inc.
...af-55fa9f71a7d3_300x300.jpg?v=1700505703PurpleAir Flex Air Quality Monitor
...s/2_Touch-Cover_300x300.png?v=1717638508PurpleAir Touch Indoor Air Quality Monitor
...les/2_Zen-Cover_300x300.png?v=1717638955PurpleAir Zen Air Quality Monitor
...park_a_Wildfire_300x300.png?v=1715894206No alt attribute provided
...ticulate_Matter_300x300.png?v=1715201214No alt attribute provided
...ir_for_Athletes_300x300.png?v=1712783605No alt attribute provided
...ast.svg?v=160053687007155003191632370281Fast Company article on purpleair link
...wired.svg?v=8028843865810750701632370301Wired article on purpleair link
...erge.svg?v=17971097265648505381632370300The Verge article on purpleair link
...all.png?v=123071989893284710231647640204SF Gate article on purpleair link
...mall.png?v=15205961910410055411632370290SF Chronicle article on purpleair link
...NYT.svg?v=142723055241421233921632370278New York Times article on purpleair link
...wapo.svg?v=18667755471521684331632370294The Washington Post article on purpleair link
...mag.svg?v=105634291035581648931632370296New York Magazine article on purpleair link
...all.png?v=162743250667941255401632370284CNBC article on purpleair link
...QED.svg?v=169437062198056323631632370277KQED article on purpleair link
...erg.png?v=164211518558711880791632370282Bloomberg article on purpleair link
...mall.png?v=33800629953890359341632370287NPR article on purpleair link
...INAL.png?v=67037569495746839891624491320Link to Maptiler website
...o_4c.png?v=86238489385132973691624491323Link to Weather Underground website
...rgin.png?v=58588802632099525071624491315Link to Windy website
...lue.png?v=159340814286393920091624491321Link to Coalition for Clean Air website
...o_v2.png?v=96734303786115733251632370283Link to Clean Air Carolina website
...logo.gif?v=21204099850388702541624491322Link to EZSBC website
...nner.png?v=48027775631582091421624491318Link to AQ-SPEC

Page structure

H1 heading
(Critically important)
There is no H1 heading specified.
Headings
(Important)
The structure of headings is missing one or more levels. Do not skip heading levels.

Heading structure

Heading levelContent
H2 PurpleAir makes sensors that empower Community Scientists who collect hyper-local air quality data and share it with the public.
H2 Our Sensors
H2 Testimonials
H2 Blog posts
H3 Don't Spark a Wildfire: Essential Prevention Tips for Outdoor Enthusiasts
H3 The Hiker's Guide to Particulate Matter: What You Need to Know
H3 PurpleAir for Athletes: Optimize Your Training with Air Quality Insights
Some internal link anchor texts are too long.
Some anchor texts are used more than once.
There are 3 links with a trivial anchor text.
The number of internal links is ok.
All internal links are not using dynamic parameters.
There are too many external links (57) on this page.
LinkAttributesAnchor text
https://www2.purpleair.com/Anchor Skip to content
https://www2.purpleair.com/IMG-ALT PurpleAir, Inc.
https://map.purpleair.com/External Subdomain Map
https://map.purpleair.com/External Subdomain Real-time Map
https://community.purpleair.co...External Subdomain Map Startup Guide
https://community.purpleair.co...External Subdomain Anchor Add Your Sensor
https://community.purpleair.co...External Subdomain Map Community
/products/listSensors
/products/listPurchase Yours Now
https://community.purpleair.co...External Subdomain Sensor Startup Guide
https://www.purpleair.com/regi...External Subdomain Register Your Sensor
https://community.purpleair.co...External Subdomain Which Sensor to Choose
https://community.purpleair.co...External Subdomain Sensor Community
https://community.purpleair.co...External Subdomain Data
https://community.purpleair.co...External Subdomain Data Download Tool
https://community.purpleair.co...External Subdomain PurpleAir API
https://community.purpleair.co...External Subdomain Data Community
https://community.purpleair.com/External Subdomain PurpleAir Community
/pages/research-papersResearch Papers
https://community.purpleair.co...External Subdomain Community Projects
https://community.purpleair.co...External Subdomain FAQ
/blogs/blog-homePurpleAir Blog
/blogs/collaborationsCollaborations Blog
/pages/contact-usContact Us
/account/loginLog in
https://www2.purpleair.com/cartCart
https://map.purpleair.com/External Subdomain Text duplicate Real-time Map
https://community.purpleair.co...External Subdomain Text duplicate Map Startup Guide
https://community.purpleair.co...External Subdomain Anchor Text duplicate Add Your Sensor
https://community.purpleair.co...External Subdomain Text duplicate Map Community
/products/listText duplicate Purchase Yours Now
https://community.purpleair.co...External Subdomain Text duplicate Sensor Startup Guide
https://www.purpleair.com/regi...External Subdomain Text duplicate Register Your Sensor
https://community.purpleair.co...External Subdomain Text duplicate Which Sensor to Choose
https://community.purpleair.co...External Subdomain Text duplicate Sensor Community
https://community.purpleair.co...External Subdomain Text duplicate Data Download Tool
https://community.purpleair.co...External Subdomain Text duplicate PurpleAir API
https://community.purpleair.co...External Subdomain Text duplicate Data Community
https://community.purpleair.com/External Subdomain Text duplicate PurpleAir Community
/pages/research-papersText duplicate Research Papers
https://community.purpleair.co...External Subdomain Text duplicate Community Projects
https://community.purpleair.co...External Subdomain Text duplicate FAQ
/blogs/blog-homeText duplicate PurpleAir Blog
/blogs/collaborationsText duplicate Collaborations Blog
/pages/contact-usText duplicate Contact Us
/products/purpleair-zenA-TITLE A link to PurpleAir's Zen Sensor
/products/purpleair-flexPurpleAir Flex Air Quality Monitor
/products/purpleair-touchPurpleAir Touch Indoor Air Quality Monitor
/products/purpleair-zenPurpleAir Zen Air Quality Monitor
/collections/air-quality-sensorsPurpleAir's industry-leading sensors measure particle pollution (PM2.5) and are priced at a fraction of what you pay for a commercial sensor. Our indoor and ...
A-TITLE A link to collections
/collections/air-quality-sensorsView Sensors
/blogs/blog-home/dont-spark-a-...Don't Spark a Wildfire: Essential Prevention Tips for Outdoor Enthusiasts
/blogs/blog-home/tagged/air-po...Air Pollution
/blogs/blog-home/tagged/air-qu...Air Quality
/blogs/blog-home/tagged/guideGuide
/blogs/blog-home/tagged/outdoorsOutdoors
/blogs/blog-home/tagged/wildfiresWildfires
/blogs/blog-home/dont-spark-a-...Trivial anchor text
Read more
/blogs/blog-home/the-hikers-gu...The Hiker's Guide to Particulate Matter: What You Need to Know
/blogs/blog-home/tagged/air-po...Text duplicate Air Pollution
/blogs/blog-home/tagged/air-qu...Text duplicate Air Quality
/blogs/blog-home/tagged/athletesAthletes
/blogs/blog-home/tagged/exerciseExercise
/blogs/blog-home/tagged/pm2-5PM2.5
/blogs/blog-home/the-hikers-gu...Text duplicate Trivial anchor text
Read more
/blogs/blog-home/purpleair-for...PurpleAir for Athletes: Optimize Your Training with Air Quality Insights
/blogs/blog-home/tagged/air-qu...Text duplicate Air Quality
/blogs/blog-home/tagged/air-qu...Air Quality Data
/blogs/blog-home/tagged/athletesText duplicate Athletes
/blogs/blog-home/tagged/exerciseText duplicate Exercise
/blogs/blog-home/purpleair-for...Text duplicate Trivial anchor text
Read more
https://www.fastcompany.com/90...New window External Subdomain Fast Company
IMG-ALT Fast Company article on purpleair link
https://www.wired.com/story/ba...New window External Subdomain Wired
IMG-ALT Wired article on purpleair link
https://www.theverge.com/21440...New window External Subdomain The Verge
IMG-ALT The Verge article on purpleair link
https://www.sfgate.com/news/ar...New window External Subdomain SF Gate
IMG-ALT SF Gate article on purpleair link
https://www.sfchronicle.com/ca...New window External Subdomain San Francisco Chronicle
IMG-ALT SF Chronicle article on purpleair link
https://www.nytimes.com/2020/0...New window External Subdomain New York Times
IMG-ALT New York Times article on purpleair link
https://www.washingtonpost.com...New window External Subdomain The Washington Post
IMG-ALT The Washington Post article on purpleair link
https://nymag.com/intelligence...New window External New York Magazine
IMG-ALT New York Magazine article on purpleair link
https://www.cnbc.com/2020/09/1...New window External Subdomain CNBC
IMG-ALT CNBC article on purpleair link
https://www.kqed.org/science/1...New window External Subdomain KQED
IMG-ALT KQED article on purpleair link
https://www.bloomberg.com/news...New window External Subdomain Bloomberg
IMG-ALT Bloomberg article on purpleair link
https://www.npr.org/2021/09/07...New window External Subdomain NPR
IMG-ALT NPR article on purpleair link
https://www.maptiler.com/New window External Subdomain Maptiler
IMG-ALT Link to Maptiler website
https://www.wunderground.com/New window External Subdomain Weather Underground
IMG-ALT Link to Weather Underground website
https://www.windy.com/New window External Subdomain Windy.com
IMG-ALT Link to Windy website
https://www.ccair.org/New window External Subdomain Coalition for Clean Air
IMG-ALT Link to Coalition for Clean Air website
https://cleanaircarolina.org/New window External Clean Air Carolina
IMG-ALT Link to Clean Air Carolina website
https://www.ezsbc.com/New window External Subdomain EZSBC
IMG-ALT Link to EZSBC website
http://www.aqmd.gov/aq-spec/pr...New window External Subdomain AQ-SPEC
IMG-ALT Link to AQ-SPEC
https://www2.purpleair.com/Home
https://map.purpleair.com/?myl...External Subdomain Text duplicate Map
https://www.purpleair.com/regi...External Subdomain Register
/pages/ccpa-opt-outDo not sell my personal information
/products/listAll Products
/products/purpleair-flexPurpleAir Flex
/products/purpleair-touchPurpleAir Touch
/products/purpleair-pa-iiPurpleAir Classic
https://community.purpleair.co...External Subdomain Technology
https://community.purpleair.co...External Subdomain Text duplicate FAQ
/pages/payment-methodsPayment Methods
/pages/warrantyWarranty
/pages/contact-usText duplicate Contact Us
https://www.facebook.com/ThePu...External Subdomain Facebook
https://www.instagram.com/thep...External Subdomain Instagram
https://www2.purpleair.com/Text duplicate PurpleAir, Inc.
https://shop.purpleair.com/pol...External Subdomain Terms & Conditions
https://shop.purpleair.com/pol...External Subdomain Privacy Policy

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://www2.purpleair.com/"
HTTP header
(Important)
No X-Powered HTTP header is sent.
This page uses GZip for compressed data transmission.
Performance
(Somewhat important)
The page response time is excellent with 0.14 seconds.
The file size of the HTML document is fine (130 kB).

HTTP Response Header

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External factors

Blacklists
(Nice to have)
This website is not classified "for adult only".
This website has excellent links from other websites.
This page has backlinks from 1,090 referring domains.
This page has 132,424 backlinks.
This page has backlinks from 834 different ip addresses.
Facebook popularity
(Somewhat important)
The page has 0 shares and comments on Facebook.

Links from Wikipedia

No links from Wikipedia were found.

Robots.txt

# we use Shopify as our ecommerce platform

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Search preview

www2.purpleair.com
Real-time Air Quality Monitoring by PurpleAir
Hyper-local, real-time, public air quality map. Visualize PM2.5 AQI in your area for free. Useful to community scientists or air quality professionals alike, PurpleAir sensors are easy to install, requiring only a power outlet and WiFi.

Most important keywords

Following keywords were found. You can check the keyword optimization of this page for each keyword.

KeywordResultRecheck
air81%Check
PurpleAir80%Check
Air Quality74%Check
Real-time Air Quality71%Check
Air Quality Monitor68%Check
air quality data63%Check
Indoor Air60%Check
Clean Air60%Check
PurpleAir Flex60%Check
PurpleAir Touch60%Check

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Cookie Policy

We use cookies to make our site work and also for analytics and advertising purposes. You can enable or disable optional cookies as desired. See the following links for more information.

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So we can better understand how visitors use our website

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