Header Tags

Header tags serve an important function for both search engines and users by informing them of the content on the page, while also providing an easy to read structure. Within our Hangout Notes we cover the importance of header tags, together with insights into how search engines read and understand them.

Google Sometimes Makes Requsts with If-modified-since headers

February 24, 2017 Source

Googlebot sometimes makes requests using an if-modificed-since request, in which case a 304 response is fine.


Header Tag Ordering is Irrelevant

December 16, 2016 Source

Google doesn’t care abour ordering and nesting header tags. e.g. H2 after an H1.


Google Distinguishes Primary Content from Boiler Plate Content

October 4, 2016 Source

Google detects boiler plate content which appears in the site in the page header, side navigation or footer and treats this separately to the primary content.


Last Modified Header Used for 304

September 9, 2016 Source

Last Modified Header is taken into account when using a 304 status code in response to a request which contains an if-modified-since in the request headers.


Don’t Prevent Embedded File caching

August 12, 2016 Source

If you prevent JS, CSS and image caching, such as a nocache header tag, Google will need to keep requesting the files for rendering, which may slow down crawling of the site.


Put Hreflang Tags Higher Up In The Head

August 12, 2016 Source

John suggests placing your hreflang tags high up in the section, particularly above any JavaScript which modifies the head.


Google Ignores Noindex in Image File Headers

August 12, 2016 Source


Googlebot Doesn’t See Robots Meta Tags on Redirected URLs

July 1, 2016 Source

If a page is a redirected, Google won’t see any robots meta tags on the page, although they might see a noindex in the headers.


A JavaScript Modified Head can Break Meta Tags

July 1, 2016 Source

If things like Hreflang tags in headers are not being picked up, it might be due to a problem with the head, perhaps modified by JavaScript. You can use the Inspect Element tool in Chrome to see the rendered page to validate the header section is correct.


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