Page speed optimisation: No more fake CDNs!

© 2019 Delete
@POLLY_P #TECHSEOSUMMAT
Page Speed optimisation:
no more fake CDNs!
POLLY POSPELOVA // DELETE

1. What is a CDN.
2. How a CDN helps SEO.
3. How SEOs use CDNs.
4. How to stop relying on fake CDNs.
What We’ll Cover.

As SEOs, we all want
to achieve better
ranking in the SERPs.

• Relevant, useful and original content
• Trustworthiness
• Backlink factors
• Brand Signals
• Low page loading time
• Site speed

What is a CDN?

How does a CDN
help SEO?

1. Speed is a
ranking factor.

2. Speed effects
bounce rate and
conversions.

3. Speed effects
revenue.

How SEOs use CDNs.

Fake CDNs.

HTTP/1

c

140 / 6 ≈ 23

HTTP/1 Connections Limit
Browser Version Connections Per Hostname Max Connections
Chrome 34/32 6 10
IE9 6 35
IE10 8 17
IE11 13 17
Firefox 27/26 6 17
Safari 7.0.1 6 17
Chrome Mobile 6 16
IE Mobile 9 6 60
Source: http://www.browserscope.org/?category=network&v=top

Fake CDNs example:
https://old.deleteagency.com

Render-blocking
resources.
BRIGHTONSEO

CDN can drastically increase the speed of
your website, but it doesn’t solve render-
blocking resources issues.
If you have a lot of render-blocking
resources, you might still experience
delays.

Abrowser doesn’tstart rendering apageuntilitloads
andparsesallresources.

We only take the necessary resources (JS, CSS) for a page
and then inline them into HTML markup, in a <head> tag.
c

After theinlinemarkuploads, wethenload allthe
necessaryresourcesin thebackgroundand cachethem.

We check if the browser already has the
resources cached and we skip inlining.

The content loads instantly
on the ﬁrst and all subsequent loads.

HTTP/2.

HTTP/1 HTTP/2

No more fake CDNs.

1. Stream multiplexing.
2. Explicit stream dependencies.
3. Server Push.
4. HPACK (the silent killer feature).

Multiplexing is a method by which multiple HTTP requests can
be sent and responses can be received asynchronously via a
single connection. Multiplexing is the heart of HTTP/2 protocol.
Stream multiplexing.

A browser can assign a priority for a new stream by including
prioritisation information in the HEADERS.
Explicit stream dependencies.

Server Push enables websites speculatively deliver content to
the web browser before the browser sends a request for it.
Server Push.

HTTP/2 supports a new dedicated header compression
algorithm, called HPACK.
HPACK.

No more fake CDNs example:
https://www.deleteagency.com

You can't do it
alone!

Thank you.

Page speed optimisation: No more fake CDNs!

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