Responsive Images

What is a responsive image?

Seo content

Use of Responsive Images

In “Properly Size Image” tab of SeoChecker's Content Performance you will find a list of images of the analyzed page that can be modified in order to improve the page's performance.

Specifically, what is wrong with these images is the size: resizing them you can save some space, expressed in the tab in KiB (kibibytes).

responsive images

How SeoChecker determines if the image is oversized

The work of SeoChecker consists in comparing the two sizes of each image present in the analyzed page: one of the original image and one of the rendered image.

How can I properly size my images?

Do not use images larger than the version rendered on the screen of the user: doing so, you seriously risk to reduce the speed of the page's loading and to waste bytes.

Instead use one of these solutions:

responsive images: in this way, for each image it will be generated different versions; then, in your CSS or HTML you can indicate which one of the version to use, through viewport dimensions, media queries etc.
image CDNs
SVG images, namely vector-based image formats.

Related guides

Learn more about Seo content

CHARSET

IMAGE RESOLUTION

PAGE DIMENSION

ROBOTS.TXT

SEO Audit

On page SEO performance and page checkup.

Over 300 parameters for the deeper page analysis.

Try it now

Share this Guide

Did you like it? Share it!

Web tools for modern developers. Try these one!

Over 50 generators, builders and validators to improve your SEO and web performances

HTTPS CHECKER

Server and proxy Tester and validators

Perform your site audit and find out what pages missing https/ssl certificate.

SITE SNAPSHOT

Images

Quicly capture any web page screenshot and thumbnails.

Get image rendering on desktop and mobile and thumbnails filmstrip with loading timing.

TWITTER CARD

Builders and generators Social

Generate Twitter cards markup and improve yours html meta.

Attach rich photos, videos and media experiences to Tweets and drive traffic to your site.

KEYWORD EXPLORER

Content

Explore and compare keywords.

Find out what customers are looking for.

Select country, date, category, search type and compare keywords.

GOOGLE PLAY URL BUILDER

Analytics Google Tracking script

Generate URLs for Google Play Campaign Measurement.

Add Google Analytics Campaigns parameters to Google Play Urls - Android SDK.

WORDPRESS THEME DETECTOR

Tester and validators

Find out which theme, version, author and license a WordPress site is using trought Wordpress Theme detector tool

IP LOCATION FINDER

Server and proxy

IP Address and Domain Name Geolocation Lookup Tool.

IPv4, IPv6 and domain name Geolocation.

Accurate IP and Domain name lookup database.

META TAGS GENERATOR

Builders and generators

Generate required and most useful meta tags for your pages.

Provide metadata about your website and help search engines to provide relevant content.