Loc.gov Site Title

Home | Library of Congress

Loc.gov Meta Description

The Library of Congress is the nation's oldest federal cultural institution, and it serves as the research arm of Congress. It is also the largest library in the world, with more than 120 million items. The collections include books, sound recordings, motion pictures, photographs, maps, and manuscripts.

Loc.gov Test Results

Loc.gov Mobile Usability: 92/100

Quick overview:
Size tap targets appropriately
Some of the links/buttons on your webpage may be too small for a user to easily tap on a touchscreen. Consider making these tap targets larger to provide a better user experience.
The following tap targets are close to other nearby tap targets and may need additional spacing around them.
The tap target <a href="/collections/?…ery&amp;sb=title_s">African American History</a> and 26 others are close to other tap targets.
...

Loc.gov Mobile Speed: 66/100

Quick overview:
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 1 blocking script resources and 1 blocking CSS resources. This causes a delay in rendering your page.
Remove render-blocking JavaScript:
https://www.loc.gov/static/js/lib/jquery-1.8.2.min.js
Optimize CSS Delivery of the following:
https://www.loc.gov/static/stylesheets/base.css?35836.31053
Leverage browser caching
Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.
Leverage browser caching for the following cacheable resources:
https://ssl.p.jwpcdn.com/6/12/jwpsrv.js (expiration not specified)
...
Minify JavaScript
Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.
Minify JavaScript for the following resources to reduce their size by 38.4KiB (19% reduction).
Minifying https://www.loc.gov/static/javascript/base.js?35836.31053 could save 38.4KiB (19% reduction) after compression.
Enable compression
Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.
Enable compression for the following resources to reduce their transfer size by 31.8KiB (64% reduction).
Compressing https://cdn.loc.gov/loader/skins/glow.xml could save 17.3KiB (67% reduction).
...
Minify CSS
Compacting CSS code can save many bytes of data and speed up download and parse times.
Minify CSS for the following resources to reduce their size by 7.4KiB (18% reduction).
Minifying https://www.loc.gov/static/stylesheets/base.css?35836.31053 could save 7.4KiB (18% reduction) after compression.
Minify HTML
Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.
Minify HTML for the following resources to reduce their size by 6.5KiB (34% reduction).
Minifying https://www.loc.gov/ could save 6.5KiB (34% reduction) after compression.
Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 922B (11% reduction).
Losslessly compressing https://www.loc.gov/static/images/sprite-loc.png?$Revision:%2035278%20$ could save 922B (11% reduction).

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