Zotero.org - SEO Checker - Website Review

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19 zotero.org Last Updated: 1 year

Success 62% of passed verification steps

Warning 15% of total warning

Errors 23% of total errors, require fast action

Mobile

Performance Desktop Score 94%

Best Practices Desktop Score 92%

SEO Desktop Score 90%

Progressive Web App Desktop Score 54%

Performance Mobile Score 62%

Best Practices Mobile Score 92%

SEO Mobile Score 92%

Progressive Web App Mobile Score 56%

Page Authority Authority 0%

Domain Authority Domain Authority 0%

Moz Rank 0.0/10

Bounce Rate Rate 0%

Charset Encoding

Great, language/character encoding is specified: UTF-8

Title Tag 41 Characters

ZOTERO | YOUR PERSONAL RESEARCH ASSISTANT

Meta Description 91 Characters

Zotero is a---, easy-to-use tool to help you collect, organize, cite, and share research.

Effective URL 22 Characters

https://www.zotero.org

Excerpt Page content

Zotero | Your personal research assistant Zotero Groups Documentation Forums Get Involved Log In Upgrade Storage ...

Keywords Cloud Density

zotero15 research6 need3 bibliography3 create3 organize3 forums3 involved3 documentation3 nonprofit2

Keyword Consistency Keyword density is one of the main terms in SEO

Keyword	Freq	Title	Desc	Domain	H1	H2
zotero	15
research	6
need	3
bibliography	3
create	3
organize	3
forums	3
involved	3
documentation	3
nonprofit	2

Google Preview Your look like this in google search result

ZOTERO | YOUR PERSONAL RESEARCH ASSISTANT

https://www.zotero.org

Zotero is a---, easy-to-use tool to help you collect, organize, cite, and share research.

Robots.txt File Detected

http://zotero.org/robots.txt

Sitemap.xml File Detected

http://zotero.org/sitemap.xml

Page Size Code & Text Ratio

Document Size: ~42.38 KB

Code Size: ~34.4 KB

Text Size: ~7.98 KB Ratio: 18.84%

Estimation Traffic and Earnings

Only Registered Users

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Desktop

Server response times are low (TTFB) Root document took 100 ms

Time To First Byte identifies the time at which your server sends a response

Eliminate render-blocking resources Potential savings of 500 ms

Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles

Total Blocking Time 0 ms

Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds.

JavaScript execution time 0.2 s

Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this

Server Backend Latencies 0 ms

Server latencies can impact web performance. If the server latency of an origin is high, it's an indication the server is overloaded or has poor backend performance

Speed Index 1.1 s

Speed Index shows how quickly the contents of a page are visibly populated

First CPU Idle 1.1 s

First CPU Idle marks the first time at which the page's main thread is quiet enough to handle input. [Learn more](https://web.dev/first-cpu-idle).

Avoids enormous network payloads Total size was 1,115 KB

Large network payloads cost users real money and are highly correlated with long load times

Minimizes main-thread work 0.5 s

Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this

First Contentful Paint 1.1 s

First Contentful Paint marks the time at which the first text or image is painted

Avoid chaining critical requests 8 chains found

The Critical Request Chains below show you what resources are loaded with a high priority. Consider reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load

Avoids an excessive DOM size 385 elements

A large DOM will increase memory usage, cause longer [style calculations](https://developers.google.com/web/fundamentals/performance/rendering/reduce-the-scope-and-complexity-of-style-calculations), and produce costly [layout reflows](https://developers.google.com/speed/articles/reflow)

First Meaningful Paint 1.1 s

First Meaningful Paint measures when the primary content of a page is visible

Keep request counts low and transfer sizes small 21 requests • 1,115 KB

To set budgets for the quantity and size of page resources, add a budget.json file

Serve static assets with an efficient cache policy 19 resources found

A long cache lifetime can speed up repeat visits to your page

Max Potential First Input Delay 50 ms

The maximum potential First Input Delay that your users could experience is the duration, in milliseconds, of the longest task

Time to Interactive 1.1 s

Time to interactive is the amount of time it takes for the page to become fully interactive

Network Round Trip Times 0 ms

Network round trip times (RTT) have a large impact on performance. If the RTT to an origin is high, it's an indication that servers closer to the user could improve performance

Estimated Input Latency 10 ms

Estimated Input Latency is an estimate of how long your app takes to respond to user input, in milliseconds, during the busiest 5s window of page load. If your latency is higher than 50 ms, users may perceive your app as laggy

Remove unused CSS Potential savings of 38 KB

Remove dead rules from stylesheets and defer the loading of CSS not used for above-the-fold content to reduce unnecessary bytes consumed by network activity

Serve images in next-gen formats Potential savings of 251 KB

Image formats like JPEG 2000, JPEG XR, and WebP often provide better compression than PNG or JPEG, which means faster downloads and less data consumption

Mobile

First Meaningful Paint 5.2 s

First Meaningful Paint measures when the primary content of a page is visible

Keep request counts low and transfer sizes small 21 requests • 1,110 KB

To set budgets for the quantity and size of page resources, add a budget.json file

Serve static assets with an efficient cache policy 19 resources found

A long cache lifetime can speed up repeat visits to your page

Max Potential First Input Delay 440 ms

The maximum potential First Input Delay that your users could experience is the duration, in milliseconds, of the longest task

Time to Interactive 5.4 s

Time to interactive is the amount of time it takes for the page to become fully interactive

Network Round Trip Times 0 ms

Network round trip times (RTT) have a large impact on performance. If the RTT to an origin is high, it's an indication that servers closer to the user could improve performance

Estimated Input Latency 150 ms

First Contentful Paint (3G) 9150 ms

First Contentful Paint 3G marks the time at which the first text or image is painted while on a 3G network

Tap targets are sized appropriately 100% appropriately sized tap targets

Interactive elements like buttons and links should be large enough (48x48px), and have enough space around them, to be easy enough to tap without overlapping onto other elements

Document uses legible font sizes 100% legible text

Font sizes less than 12px are too small to be legible and require mobile visitors to “pinch to zoom” in order to read. Strive to have >60% of page text ≥12px

Remove unused CSS Potential savings of 38 KB

Remove dead rules from stylesheets and defer the loading of CSS not used for above-the-fold content to reduce unnecessary bytes consumed by network activity

Serve images in next-gen formats Potential savings of 251 KB

Image formats like JPEG 2000, JPEG XR, and WebP often provide better compression than PNG or JPEG, which means faster downloads and less data consumption

Server response times are low (TTFB) Root document took 30 ms

Time To First Byte identifies the time at which your server sends a response

Eliminate render-blocking resources Potential savings of 2,800 ms

Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles

Total Blocking Time 0 ms

Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds.

JavaScript execution time 1.0 s

Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this

Server Backend Latencies 0 ms

Server latencies can impact web performance. If the server latency of an origin is high, it's an indication the server is overloaded or has poor backend performance

Speed Index 4.5 s

Speed Index shows how quickly the contents of a page are visibly populated

First CPU Idle 5.2 s

First CPU Idle marks the first time at which the page's main thread is quiet enough to handle input. [Learn more](https://web.dev/first-cpu-idle).

Avoids enormous network payloads Total size was 1,110 KB

Large network payloads cost users real money and are highly correlated with long load times

Minimize main-thread work 2.8 s

Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this

First Contentful Paint 4.5 s

First Contentful Paint marks the time at which the first text or image is painted

Avoid chaining critical requests 8 chains found

Avoids an excessive DOM size 385 elements

Speed And Optimization Tips

Only Registered Users

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Alexa Rank

0

Local Rank: / Users: / PageViews:

Global Rank

Information Server

Response Header HTTP headers carry information about the client browser, the requested page and the server

HTTP/1.1 200 OK
Date: Wed, 25 Dec 2019 23:16:01 GMT
Server: Apache/2.4.39 (Amazon)
Content-Type: text/html; charset=UTF-8
Strict-Transport-Security: max-age=31536000; includeSubDomains; preload

DNS Records DNS Resource Records associated with a hostname

View DNS Records

Type	Name	Value	Class	TTL
A	zotero.org	50.19.225.228	IN	291
NS	zotero.org	ns-496.awsdns-62.com	IN	7191
NS	zotero.org	ns-635.awsdns-15.net	IN	7191
NS	zotero.org	ns-1395.awsdns-46.org	IN	7191
NS	zotero.org	ns-1678.awsdns-17.co.uk	IN	7191
MX	zotero.org	mail.zotero.org	IN	3591
TXT	zotero.org	v=spf1 mx include:amazonses.com -all	IN	51

Your Website Score is

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19 zotero.org Last Updated: 1 year

Desktop

Mobile

Estimation Traffic and Earnings

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Desktop

Mobile

Speed And Optimization Tips

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Alexa Rank

0

Information Server

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