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Home | Library of Congress
The world's largest library. View historic photos, maps, books and more. Contact experts for help with research. Plan a visit. Home of U.S. Copyright Office.
Home | Library of Congress
The world's largest library. View historic photos, maps, books and more. Contact experts for help with research. Plan a visit. H...
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 results of our semantic analysis are shown below using the website's language.
They are the main concepts covered by loc.gov.
Each concept has a confidence score. The higher it is, the more important the topic is relative to the page.
Library of Congress Confidence: 83%
United States Copyright Office Confidence: 76%
Map Confidence: 68%
Photograph Confidence: 67%
Book Confidence: 65%
❌ loc.gov website speed is slow. 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 1.2 seconds.
loc.gov is faster than approximately 73 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 #3.172 by Alexa.
This rank is traffic based. The lower the rank is, the better the domain is ranked.
|United States of America||#808|
|Iran (Islamic Republic of)||#16.871|
|United Kingdom of Great Britain and Northern Ireland||#5.246|
|Korea (Republic of)||#4.942|
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. loc.gov 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.
For a better readability, only the first 20 <H2> tags are shown below.
|2nd level heading|
|More programs, services|
|Free to use and reuse: glasses|
|The latest in eye shields--for desert warfare...|
|Tank driver, ft. knox, ky.|
|Letter from ben franklin to george whatley. franklin is credited with inventing bifocal glasses...|
|Thomas jefferson to james madison, march 1784, spectacles to be ordered from benjamin dudley|
|Save your eyes - use your goggles|
|Bethlehem-fairfield shipyards, baltimore, maryland. a group of workers with their safety goggles|
|Katharine wright, wearing a leather jacket, cap, and goggles, aboard the wright model hs airplane with orville, 1915|
|Japanese woman wearing wire spectacles|
|Portrait of dizzy gillespie, new york, n.y., ca. may 1947|
|Goggles carried by lincoln's bodyguards during his train ride through baltimore...|
|Unidentified soldier in union uniform with dual revolvers and sword, wearing eyeglasses|
|Dr. mary parsons, 1st woman physician to practice medicine south of mason-dixon line.|
|Girl with eyeglasses in rocking chair knitting|
|3rd level heading|
|Shop the library for unique gifts (3)|
|Women rule 2019 national film registry (2)|
|Major exhibition on rosa parks now open (2)|
|Help ıgnite the power of ıdeas (2)|
|Explore america's changemakers (2)|
We found 58 images on this website.
24 ALT attributes are missing on your image tags. The issue affects 18 actual different images that could be loaded more than once in your page.
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 24 images on loc.gov. Check your website to make sure it's specified for each image on the page.