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SEO Help Center
General SEO Information, Glossary of Terms etc.
140 articles in this collection
Written by
Simon Lesser
and
Wilfred Yeung
Site Issues
X-robots noindex resources
Written by
Wilfred Yeung
Updated over a week ago
Resources blocked by robots.txt
Written by
Wilfred Yeung
Updated over a week ago
Twitter card description too long
Written by
Wilfred Yeung
Updated over a week ago
Twitter card missing
Written by
Wilfred Yeung
Updated over a week ago
Twitter card incomplete
Written by
Wilfred Yeung
Updated over a week ago
Multiple Rel=Canonical Tags
Written by
Wilfred Yeung
Updated over a week ago
Open Graph tags missing
Written by
Wilfred Yeung
Updated over a week ago
Open Graph tags incomplete
Written by
Wilfred Yeung
Updated over a week ago
Multiple hreflang languages referencing the same URL
Written by
Wilfred Yeung
Updated over a week ago
Hreflang and HTML lang mismatch
Written by
Wilfred Yeung
Updated over a week ago
Open Graph URL not matching canonical
Written by
Wilfred Yeung
Updated over a week ago
Missing HTML lang value
Written by
Wilfred Yeung
Updated over a week ago
Multiple URLs referenced for the same hreflang language
Written by
Wilfred Yeung
Updated over a week ago
Hreflang to non-canonical
Written by
Wilfred Yeung
Updated over a week ago
Non-reciprocal hreflang tag
Written by
Wilfred Yeung
Updated over a week ago
Missing x-default hreflang
Written by
Wilfred Yeung
Updated over a week ago
Redirecting hreflang link
Written by
Wilfred Yeung
Updated over a week ago
Invalid HTML lang value
Written by
Wilfred Yeung
Updated over a week ago
Broken hreflang link
Written by
Wilfred Yeung
Updated over a week ago
No self-referencing hreflang tag
Written by
Wilfred Yeung
Updated over a week ago
Empty or missing hreflang
Written by
Wilfred Yeung
Updated over a week ago
Rel=Canonical Empty / Missing
Written by
Wilfred Yeung
Updated over a week ago
Meta Robots NoFollow
Written by
Wilfred Yeung
Updated over a week ago
Blocked by robots.txt
Written by
Wilfred Yeung
Updated over a week ago
Blocked by X-Robots Tag
Written by
Wilfred Yeung
Updated over a week ago
Blocked by Meta Robots
Written by
Wilfred Yeung
Updated over a week ago
No Keywords in Body Text
Written by
Wilfred Yeung
Updated over a week ago
Mixed Redirects
Written by
Wilfred Yeung
Updated over a week ago
Invalid Characters in URL
Written by
Wilfred Yeung
Updated over a week ago
No Links on Page
Written by
Wilfred Yeung
Updated over a week ago
Meta Refresh Tag
Written by
Wilfred Yeung
Updated over a week ago
Meta Keywords Too Long
Written by
Wilfred Yeung
Updated over a week ago
Body Text Too Short
Written by
Wilfred Yeung
Updated over a week ago
No Keywords in URL
Written by
Wilfred Yeung
Updated over a week ago
Infinite / Looped Redirect
Written by
Wilfred Yeung
Updated over a week ago
Redirect Chain
Written by
Wilfred Yeung
Updated over a week ago
URL Too Long
Written by
Wilfred Yeung
Updated over a week ago
Too Many URL Parameters
Written by
Wilfred Yeung
Updated over a week ago
Too Many Links on Page
Written by
Wilfred Yeung
Updated over a week ago
Duplicate Page Content
Written by
Simon Lesser
Updated over a week ago
No Keywords in Meta Keywords
Written by
Simon Lesser
Updated over a week ago
Invalid hreflang value
Written by
Wilfred Yeung
Updated over a week ago
Invalid Content Type
Written by
Wilfred Yeung
Updated over a week ago
Duplicate Meta Keywords
Written by
Simon Lesser
Updated over a week ago
Alt text too long
Written by
Wilfred Yeung
Updated over a week ago
Meta Keywords Empty / Missing
Written by
Simon Lesser
Updated over a week ago
Alt text empty / missing
Written by
Wilfred Yeung
Updated over a week ago
No Keywords in Headings
Written by
Simon Lesser
Updated over a week ago
Asset is linked via redirect
Written by
Wilfred Yeung
Updated over a week ago
Multiple H1s
Written by
Simon Lesser
Updated over a week ago
Broken images
Written by
Wilfred Yeung
Updated over a week ago
H1 Too Short
Written by
Simon Lesser
Updated over a week ago
H1 Empty / Missing
Written by
Simon Lesser
Updated over a week ago
No Keywords in Meta Description
Written by
Simon Lesser
Updated over a week ago
Multiple Meta Descriptions
Written by
Simon Lesser
Updated over a week ago
Meta Description Too Long
Written by
Simon Lesser
Updated over a week ago
Duplicate Meta Description
Written by
Simon Lesser
Updated over a week ago
Meta Description Empty / Missing
Written by
Simon Lesser
Updated over a week ago
No Keywords in Title
Written by
Simon Lesser
Updated over a week ago
Multiple Page Titles
Written by
Simon Lesser
Updated over a week ago
Title Too Short
Written by
Simon Lesser
Updated over a week ago
Title Too Long
Written by
Simon Lesser
Updated over a week ago
Duplicate Titles
Written by
Simon Lesser
Updated over a week ago
Title Empty / Missing
Written by
Simon Lesser
Updated over a week ago
5xx Error
Written by
Simon Lesser
Updated over a week ago
4xx Error
Written by
Simon Lesser
Updated over a week ago
3xx Redirect
Written by
Simon Lesser
Updated over a week ago
302 Redirect
Written by
Simon Lesser
Updated over a week ago
SEO Glossary of Terms
Dark Traffic
Written by
Simon Lesser
Updated over a week ago
Priority Score
Written by
Wilfred Yeung
Updated over a week ago
Qihoo 360
Written by
Wilfred Yeung
Updated over a week ago
Regular Expression
Written by
Wilfred Yeung
Updated over a week ago
Mixed Redirect
Written by
Wilfred Yeung
Updated over a week ago
Looped Redirect
Written by
Wilfred Yeung
Updated over a week ago
Naver
Written by
Wilfred Yeung
Updated over a week ago
H1 Tag
Written by
Wilfred Yeung
Updated over a week ago
Yandex
Written by
Wilfred Yeung
Updated over a week ago
Sogou
Written by
Wilfred Yeung
Updated over a week ago
Spider
Written by
Wilfred Yeung
Updated over a week ago
Meta Description
Written by
Wilfred Yeung
Updated over a week ago
PPC
Written by
Wilfred Yeung
Updated over a week ago
Meta Keywords Tag
Written by
Wilfred Yeung
Updated over a week ago
HTTP Response Header
Written by
Wilfred Yeung
Updated over a week ago
Robot
Written by
Wilfred Yeung
Updated over a week ago
X-Robots Tag
Written by
Wilfred Yeung
Updated over a week ago
Meta Robots Tag
Written by
Wilfred Yeung
Updated over a week ago
JavaScript
Written by
Wilfred Yeung
Updated over a week ago
Thin Content
Written by
Wilfred Yeung
Updated over a week ago
Java (Java Applet)
Written by
Wilfred Yeung
Updated over a week ago
Keyword Stuffing
Written by
Wilfred Yeung
Updated over a week ago
Heading Tags (h1-h6)
Written by
Wilfred Yeung
Updated over a week ago
Web Crawler
Written by
Wilfred Yeung
Updated over a week ago
Infinite Redirect
Written by
Wilfred Yeung
Updated over a week ago
HTTP Status Code
Written by
Wilfred Yeung
Updated over a week ago
HTTP 200 (OK) Status
Written by
Wilfred Yeung
Updated over a week ago
Crawl Budget
Written by
Wilfred Yeung
Updated over a week ago
Dead End Page
Written by
Wilfred Yeung
Updated over a week ago
Body Text
Written by
Wilfred Yeung
Updated over a week ago
CMS (Content Management System)
Written by
Wilfred Yeung
Updated over a week ago
Cloaking
Written by
Wilfred Yeung
Updated over a week ago
Conversion
Written by
Wilfred Yeung
Updated over a week ago
Baidu
Written by
Wilfred Yeung
Updated over a week ago
Black Hat
Written by
Wilfred Yeung
Updated over a week ago
AJAX
Written by
Wilfred Yeung
Updated over a week ago
500 Internal Service Error
Written by
Wilfred Yeung
Updated over a week ago
503 Service Unavailable Error
Written by
Wilfred Yeung
Updated over a week ago
302 Temporary Redirect
Written by
Wilfred Yeung
Updated over a week ago
De-Indexation
Written by
Wilfred Yeung
Updated over a week ago
Canonical Page
Written by
Wilfred Yeung
Updated over a week ago
Robots.txt
Written by
Wilfred Yeung
Updated over a week ago
Rel="canonical" Tag
Written by
Wilfred Yeung
Updated over a week ago
XML Sitemap
Written by
Wilfred Yeung
Updated over a week ago
301 Permanent Redirect
Written by
Wilfred Yeung
Updated over a week ago
Crawl
Written by
Wilfred Yeung
Updated over a week ago
Title Tag
Written by
Wilfred Yeung
Updated over a week ago
Static URL
Written by
Wilfred Yeung
Updated over a week ago
Duplicate Content
Written by
Wilfred Yeung
Updated over a week ago
Dynamic URL
Written by
Wilfred Yeung
Updated over a week ago
SERP Snippet
Written by
Wilfred Yeung
Updated over a week ago
HTML Head Element
Written by
Wilfred Yeung
Updated over a week ago
Webspam
Written by
Wilfred Yeung
Updated over a week ago
Click-Through Rate
Written by
Wilfred Yeung
Updated over a week ago
Indexation
Written by
Wilfred Yeung
Updated over a week ago
SERP
Written by
Wilfred Yeung
Updated over a week ago
Index
Written by
Wilfred Yeung
Updated over a week ago
Rel=next and Rel=prev Tags
Written by
Wilfred Yeung
Updated over a week ago
Link Juice
Written by
Wilfred Yeung
Updated over a week ago
URL Parameter
Written by
Wilfred Yeung
Updated over a week ago
Nofollow attribute
Written by
Wilfred Yeung
Updated over a week ago
Anchor Text
Written by
Wilfred Yeung
Updated over a week ago
404 Not Found Error
Written by
Wilfred Yeung
Updated over a week ago
Organic CTR
Organic CTR is the percentage of estimated clicks on a SERP that go to organic results
Written by
Simon Lesser
Updated over a week ago
Organic Difficulty
Organic Difficulty helps you to understand how hard it would be to rank on the top 10 organic positions.
Written by
Simon Lesser
Updated over a week ago
Dragon Rank
Written by
Simon Lesser
Updated over a week ago
Traffic Index
Written by
Simon Lesser
Updated over a week ago
Search Volume
Written by
Simon Lesser
Updated over a week ago
Preferred Landing Page
Written by
Simon Lesser
Updated over a week ago
Organic Visibility Score
Organic Visibility Score is a metric that quickly summarizes your organic ranking performance. Learn how it's calculated.
Written by
Simon Lesser
Updated over a week ago
Page Authority
Written by
Simon Lesser
Updated over a week ago
Domain Authority
Written by
Simon Lesser
Updated over a week ago