Osti.gov Site Title

OSTI, US Dept of Energy Office of Scientific and Technical Information | Speeding access to science information from DOE and Beyond

Osti.gov Test Results

Osti.gov Mobile Usability: 82/100

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 <label for="edit-apachesol…search-form--2" class="element-invisible">Search</label> is close to 1 other tap targets.
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Size content to viewport
The page content is too wide for the viewport, forcing the user to scroll horizontally. Size the page content to the viewport to provide a better user experience.
The page content is 412 CSS pixels wide, but the viewport is only 411 CSS pixels wide. The following elements fall outside the viewport:
The element <div class="utilities col-…m-12 col-xs-12">FAQs |…ack/Contact Us</div> falls outside the viewport.

Osti.gov Mobile Speed: 32/100

Quick overview:
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 690.4KiB (80% reduction).
Compressing https://www.osti.gov/ could save 306.7KiB (88% reduction).
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Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 17 blocking script resources and 35 blocking CSS resources. This causes a delay in rendering your page.
Remove render-blocking JavaScript:
https://www.osti.gov/sites/all/modules/jquery_update/replace/jquery/1.8/jquery.min.js?v=1.8.3
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Optimize CSS Delivery of the following:
https://www.osti.gov/modules/system/system.base.css?oe66ph
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Avoid landing page redirects
Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.
Avoid landing page redirects for the following chain of redirected URLs.
http://osti.gov/
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Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 236.3KiB (29% reduction).
Compressing http://www.osti.gov/home/sites/www.osti.gov.home/files/images/DOE_SC_OSTI_white62_1.png could save 103.6KiB (91% reduction).
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Prioritize visible content
Your page requires additional network round trips to render the above-the-fold content. For best performance, reduce the amount of HTML needed to render above-the-fold content.
348.9KiB of the HTML response was required to render the above-the-fold content. This requires 5 network round-trips. However, if the HTML response were compressed, then the HTML required to render the above-the-fold content could be delivered in just 2 network round-trips. Enable compression for the HTML response in order to prioritize the visible content for this page.
Only about 31% of the final above-the-fold content could be rendered with the HTML delivered within 2 round-trips.
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://www.osti.gov/home/sites/www.osti.gov.home/files/images/DOE_SC_OSTI_white43.png (expiration not specified)
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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 70.7KiB (42% reduction).
Minifying https://www.osti.gov/sites/all/libraries/jquery.cycle/jquery.cycle.all.js?oe66ph could save 17.8KiB (36% reduction).
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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 53KiB (16% reduction).
Minifying https://www.osti.gov/ could save 53KiB (16% 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 51.1KiB (23% reduction).
Minifying https://www.osti.gov/sites/lxdrupal1-d7.osti.gov/themes/bootstrap/css/bootstrap.css?oe66ph could save 16.6KiB (13% reduction).
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