Information Gain
SEOAlso: Information Gain Score · Content Novelty
Quick definition
Information gain is a concept from a Google patent describing how a search engine can score a page based on how much new information it adds compared to other results already ranking for the same query. Content that only restates existing top results scores low. Content with a genuinely new angle scores higher.
How it varies across Australia
Australian content sites lean heavily on rewriting whatever already ranks, particularly in competitive categories like finance and health. That pattern makes information gain a bigger opportunity here than in categories where original research and first-party data are already common practice.
See content marketing performance across Australian industries →What it actually means
Picture ten people writing an answer to the same question after reading the same three sources. Nine of them produce a slightly different arrangement of the same facts. One of them tested the claim themselves and reports what actually happened. Information gain is Google's attempt to reward that tenth person.
The concept comes from a Google patent filed years ago, not from an official ranking factor announcement. It describes scoring a document by comparing it to a set of other documents already returned for the same query, then measuring how much genuinely new information it contributes. Overlap with existing content, especially the top-ranking pages, drags the score down.
This is where content decay and duplicate content meet a newer problem. A lot of SEO content was written by reading the existing top ten and rearranging it. That approach worked when ranking rewarded keyword coverage and structure. It works less well now that search intent has matured and engines can detect when nothing new was added.
Information gain rewards primary research, direct testing, first-party data and stated opinion, the things a competitor genuinely cannot copy by rewriting your page.
If your article could have been written by summarising the top five results, Google's own patent says it shouldn't outrank them.
How it shows up
Information gain shows up indirectly, not as a number in any dashboard. You'll see its effect when a shorter, less polished page with original data or a tested claim outranks a longer, better-written page that just synthesises existing sources. It also shows up in Google's Helpful Content guidance, which explicitly asks whether a page provides substantial value beyond what's already available for a given search.
The Australian context
Australian SEO content in regulated categories like finance and health often defers heavily to generic global sources because local data is harder to find. That creates an opening. A page built from Australian Bureau of Statistics data, an ACCC ruling, or a genuinely local survey has an information gain advantage that competitors copying overseas content cannot easily replicate. This is one of the few SEO advantages that's genuinely harder to outsource offshore.
Where people get this wrong
Related terms
Common questions
Is information gain a confirmed Google ranking factor?
Google has never confirmed it as an official ranking factor. It comes from a patent that describes the concept, and Google's Helpful Content guidance echoes the same idea in plainer language. Treat it as a strong directional signal rather than a documented algorithm input.
How do I improve information gain on an existing page?
Add something the current top-ranking pages don't have. Original data, a first-hand test, a stated opinion with reasoning, or local information competitors haven't sourced. Rewriting existing structure with new phrasing does not count.
Does information gain apply to every type of content?
It matters most for informational queries where many pages compete to answer the same question. It matters less for transactional pages like product listings, where the job of the page is conversion rather than teaching something new.
Can I measure information gain with an SEO tool?
Not directly. No mainstream SEO tool reports a genuine information gain score because it isn't a public metric. The closest proxy is manually comparing your content against the current top ten and asking what you're offering that they aren't.
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About New Rebellion
New Rebellion is a marketing intelligence consultancy. We build tools, score Australian businesses on how their marketing actually performs, and publish Debrief every day. This dictionary is part of how we work in the open.
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