Every guide about getting approved for AdSense says the same sentence.

Google rejects thin content.

So people write longer. They pad to 1,500 words because a listicle told them to. They add a section called "Final Thoughts" that repeats the introduction in different words.

I did this. Then I went looking for the rule I was trying to satisfy, so I could find out how long was long enough.

I could not find it. Not because it is hard to find, because Google has never written it.

Here is what I actually checked, and what I found instead.

Nine pages

I fetched nine Google pages that deal with content quality, and counted how often the phrase "thin content" appears on each.

Google page "thin content" "low-value content"
Search Console manual actions 4 0
AdSense: your account wasn't approved 1 0
Publisher Policies glossary 0 1
Creating helpful content 0 1
Spam policies 0 1
AdSense: content and user experience 0 0
AdSense: your site isn't ready 0 0
SEO starter guide 0 0
Using generative AI content 0 0

Two out of nine. And look at which five never use it once, every one of them is a page about content quality. If "thin content" were Google's term of art for bad content, those are the pages that would use it.

So the phrase is real. Google wrote it. It just is not the rule people think it is.

The one place it is a rule

There is a Google page where "thin content" is not a phrase but a named penalty. It is in Search Console, under manual actions:

Thin content with little or no added value

"Google has detected low-quality pages or shallow pages on your site."

"Here are a few common examples of pages that often have thin content with little or no added value:"

  • "Thin affiliate pages"
  • "Content from other sources. For example: scraped content or low-quality guest blog posts"
  • "Doorways"

Read that list again, because it is the whole article.

Affiliate. Scraped. Doorway.

Every single example is about where the content came from. Not one of them is about how much of it there is. A 4,000-word article scraped from three other sites is on that list. A 500-word article you wrote from your own testing is not.

And immediately after the examples, Google says what is wrong with them:

"These techniques don't provide users with substantially unique or valuable content."

Unique. Valuable. Not long.

There is no number anywhere on that page. No word count, no page count, no threshold. It names a problem and then describes it by example.

The page that rejects you never says it

This is the part that surprised me.

The page in the AdSense email, Your AdSense account wasn't approved, uses the phrase once, and only as the title of an embedded YouTube video:

"Thin content (and why quality content matters) | Sustainable Monetized Websites"

The body of that page never says it. What the page actually names are six headings:

Insufficient content
Content quality issues
Content policy violations
Site navigation issues
Issues with your traffic sources
Unsupported language

Under Insufficient content, the wording is:

"Your site was found to have too little text, and/or your site was deemed to be "under construction.""

"Your content should contain complete sentences and paragraphs, not only headlines."

Under Content quality issues:

"We believe that there isn't enough original, rich content that would be of value to users."

"Don't place the ad code on auto-generated pages or pages with little to no original content."

"Too little text" is about text existing. A page of images with no writing is insufficient. That is a completely different problem from a well-written 600-word article.

"Original, rich content" is about it being yours.

Neither is a word count. And the phrase everyone quotes is a video title.

The term Google did bother to define

Google's Publisher Policies have a glossary. I went looking for "thin content" in it. It is not there.

What is there is this:

low-value content

"Unintelligible content that has no value to the user (e.g., filler text or "ipsum lorem" text)."

Unintelligible. Not short. Unintelligible.

That is the definition Google chose to write down, and it describes a page that says nothing, not a page that says something briefly.

Which means the padding advice is precisely backwards. Filler text is the example Google gives for low-value content. The "Final Thoughts" section that repeats your introduction in different words is the thing in the glossary. It is not insurance against being called thin. It is a specimen.

But the idea is defined. In three words.

I have said Google never defines "thin content". That is true of the phrase. It is not true of the idea, and I found that out after writing the rest of this.

The Search Quality Rater Guidelines are Google's own standard for evaluating search quality. 182 pages, published by Google, revised regularly. Section 3.2 is called Quality of the Main Content, and it contains this:

"For most pages, the quality of the MC can be determined by the amount of effort, originality, and talent or skill that went into the creation of the content."

Effort. Originality. Talent or skill.

Not length. And I checked: across all 182 pages, the phrase "word count" appears zero times. So do "content length", "minimum length" and "number of words".

Section 4.6.6 then restates it as a rating, and adds the sentence that matters most to anyone who borrows:

"Such pages should be rated Lowest, even if the page assigns credit for the content to another source."

Linking your source is not a defence. That is worth sitting with, because citing where something came from is exactly what a careful publisher does to feel honest about it.

And section 5.2.2 is called Filler as a Poor User Experience:

"Filler can artificially inflate content, creating a page that appears rich but lacks content website visitors find valuable."

"Artificially inflate content, creating a page that appears rich." That is what padding to a word count is, described as a reason to be rated Low.

One thing you should know before you go and read it

The rater guidelines are not a ranking document. Section 0.1 says so in plain words:

"No single rating can directly impact how a particular webpage, website, or result appears in Google Search."

No rater reads your site, and no rating moves you up or down. Anyone telling you otherwise is selling something.

What the document gives you is Google's own meaning of a word you were already using. Not a checklist, not a penalty list, the standard Google's systems are measured and improved against. "Effort, originality, talent or skill" is a far more useful sentence to write by than "aim for 1,500 words", and it is the one Google actually published.

I wrote the whole thing up separately, with the counts and the sections quoted in full: Google's definition of low-value content is three words, and none of them is "length".

Google has said twice that no word count exists

If you want Google's position on length, it is written down plainly. Twice.

In Creating helpful content, inside a list of questions to ask yourself:

"Are you writing to a particular word count because you've heard or read that Google has a preferred word count? (No, we don't.)"

And in the SEO starter guide, under a heading that sounds like it is going to give you a number:

"Minimum or maximum content length, The length of the content alone doesn't matter for ranking purposes (there's no magical word count target, minimum or maximum, though you probably want to have at least one word)."

No magical word count target, minimum or maximum.

That is as direct as Google gets about anything. They put it in parentheses the first time, which reads like a sigh.

If you are writing to a number, you are writing to a number nobody at Google wrote down.

The policy that is actually defined

Here is the part that matters more than the definition argument.

Google does have a modern, precisely-worded policy about content like the kind that gets sites rejected. It is called scaled content abuse, and it is worth reading in full:

"Scaled content abuse is when many pages are generated for the primary purpose of manipulating search rankings and not helping users. This abusive practice is typically focused on creating large amounts of unoriginal content that provides little to no value to users, no matter how it's created."

Examples Google lists:

"Using generative AI tools or other similar tools to generate many pages without adding value for users"

"Scraping feeds, search results, or other content to generate many pages (including through automated transformations like synonymizing, translating, or other obfuscation techniques), where little value is provided to users"

"Stitching or combining content from different web pages without adding value"

"Creating multiple sites with the intent of hiding the scaled nature of the content"

Notice what is being measured. "Many pages." "Large amounts." The unit is the site, not the page.

That is a completely different target from the one people aim at. Nobody gets flagged for a 600-word article. Sites get flagged for hundreds of articles of borrowed content published fast, which is a description of a process, not of a page.

What that looks like in numbers

I have a site I can measure this on, and the numbers are what convinced me.

Rejected site Approved site
Articles 392 301
Published over 10 weeks 5 years
Busiest single day 35 articles -
Borrowed from other sites 320 of 392 (81%) ~0
Average length 1,143 words 500–1,800 words

The rejected site had a longer average article than the approved one.

By word count it was the healthier of the two. It was rejected anyway, and the numbers say why: 81% of it came from somewhere else, and it all arrived in ten weeks.

Length was never the variable. Origin and rate were.

What to do instead

The most useful thing I found is at the bottom of the manual action page, Google's own list of what to fix. Not a word count. A checklist:

"Check for content on your site that duplicates content found elsewhere."

"Check for thin content pages with affiliate links on your site."

"Check for doorway pages on your site."

"If your site contains any of these types of content, think about whether your site provides significant added value for your users."

And one line I did not expect from Google, which is the most practical advice on the page:

"Tip: Consider asking friends or family, real people not affiliated with your site, to use or critique your site to get ideas for improving it."

Ask a human whether your site is worth reading. That is the test. Not a word count.

What I do now

I stopped counting words. I count three other things instead:

1. Did this come from me? Something I ran, tested, measured, or read in the primary source. Not a summary of a summary.

2. Would deleting it leave a gap? If a section can be removed and nothing is lost, it was filler, and filler is the definition Google wrote down.

3. Does it stand on its own? If a reader has to go and search again to get a real answer, the page did not do its job.

The rule I write to now:

Write until the subject is finished. Then stop. Not one sentence before, not one after.

That produces articles of wildly different lengths. It is also the only version of the advice that matches what Google actually wrote, which is:

They never said how long. They said whose.