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SPIE is a non-profit dedicated to advancing the scientific research and engineering applications of optics and photonics through international conferences, education...
SPIE is a non-profit dedicated to advancing the scientific research and engineering applications of optics and photonics through i...
No 301 redirects are in place to redirect traffic to your preferred domain. Pages that load successfully both with and without www. are treated as duplicate content! Not all versions of your page point to the same URL.
ⓘ The owner has associated the following topics to the website.
ⓘ The results of our semantic analysis are shown below using the website's language.
They are the main concepts covered by spie.org.
Each concept has a confidence score. The higher it is, the more important the topic is relative to the page.
Photonics Confidence: 79%
SPIE Confidence: 78%
Optics Confidence: 75%
Engineering Confidence: 72%
Scientific method Confidence: 70%
✅ spie.org website speed is normal. Page speed is important for visitors and search engines.
Get insights to improve your page loading time.
This domain loads at the median speed of 2.6 seconds.
spie.org is faster than approximately 29 percent of the web. Your website page speed needs to be as fast as you can make it, without compromising the customer experience.
A good goal to achieve is a loading time of 2 seconds on desktop and mobile devices.
ⓘ This website is ranked #76.927 by Alexa.
This rank is traffic based. The lower the rank is, the better the domain is ranked.
|United States of America||#54.407|
The Doctype is used to instruct web browsers about the document type being used, like for a page, what version of HTML it's written in.
Declaring a doctype helps web browsers to render content correctly, which will give you more consistent results when you are styling your website with CSS.
Mobile friendly pages make it easy for users to complete objectives and common tasks on mobile devices, such as smartphones and tablets. spie.org seems to use a design or template that is consistent across all devices, in other words it's web design is responsive.
This website seems to be optimized for Mobile Visitors.
There is no best color scheme to use, but keep in mind that the bold dominant and accent colors give the website personality and focal points, while the plain background color keeps your visitors' focus on your content or products.
A good text to HTML ratio is anywhere from 25 to 70%.
This percentage refers to the visible text ratio, as opposed to HTML elements, image tags and other non-visible information.
Great, we found headings on this page.
However, you have not defined a top level heading, or <H1>. It is used to define the most important heading.
We recommend using one top level heading to set up a semantic relationship between that heading and the remainder of the content on a page. It clearly describes to the readers and the search engines what it is about.
|2nd level heading|
|Sign ın / returning customer|
We found 31 images on this website.
21 ALT attributes are missing on your image tags. The issue affects 19 actual different images that could be loaded more than once in your page.
|/Images/Graphics/Newsroom/2019articles/danilo victoriano solar panels-287.jpg|
|/Images/Graphics/Newsroom/2019articles/2020 SPIE Awards/287x180_PW2020_Ferry.jpg|
Alternative text allows you to add a description to an image.
Google rely on alternative text attributes to determine relevance to a search query. Alternative text also makes an image more likely to appear in a Google image search.
It looks like you're missing alternative text for 21 images on spie.org. Check your website to make sure it's specified for each image on the page.