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For publishers & writers

AI Content Detector for Publishers & Writers

Verify content is human-written before you publish or pay — privately.

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Related: AI Humanizer Detector · ChatGPT Detector Gemini Detector
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Astra AI Detector shows probability, not proof — no AI checker is 100% accurate.

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01Who it's for

AI content detection for publishers, writers and editors

An AI checker for editorial and marketing teams, freelancer verification and SEO content review.

If you commission, edit or publish writing, you need to know it's genuinely human before it goes live or gets paid for. Astra is an AI content detector built for that job — an AI checker for editorial and marketing teams, freelancer verification, and SEO content review. Paste or upload a draft above to get an AI score plus sentence-level highlights showing which passages read as machine-written.

Built for Editorial teamsMarketing teamsFreelancer verificationSEO content review

It's free, runs in the browser, and doesn't store the content you check — so client and unpublished work stays private.

02Workflow

An editorial workflow that scales

Spot-check a suspect passage or review the whole piece — then decide with context.

Spot-check or full review

Run a quick check on a suspect section, or paste the whole piece before it's published or invoiced.

Read the highlights

Use the sentence-level signals to find the paragraphs worth questioning, fact-checking or rewriting — not just a single overall number.

Decide with context

Weigh the score against the brief, the writer's track record and their drafts, then edit or ask questions.

03Search & SEO

Google and AI content: what actually matters

Google doesn't ban AI content — it targets low-value, scaled pages made to manipulate rankings.

Google doesn't ban AI content outright.

Its guidance rewards helpful, people-first content however it's produced, and targets scaled content abuse — low-value pages mass-produced mainly to manipulate rankings. Astra helps you stay on the right side of that line by keeping published work genuinely useful and human-verified, and by catching thin, generic AI passages — the repetitive transitions and flat, even phrasing models default to — before they ship.

For the official position, see Google's helpful content guidance.

04Freelance

Verifying freelance and agency work

An AI content check protects both quality and budget when you pay for writing.

When you pay for writing, an AI content check protects both quality and budget.

Run deliverables through Astra, review the highlighted sentences, and compare the result against the brief and any drafts the writer can share. Many teams now use AI legitimately in their process, so treat a flag as a prompt to review and discuss — not an automatic rejection.

And remember detection is probabilistic: use it to guide judgement, not to make an accusation you can't support.

05Paraphrased AI

Catch reworded and paraphrased AI

Detection that reads meaning and structure, not just wording.

Content is often generated, then paraphrased or run through a “humanizer” before submission — which is precisely what basic checkers miss.

Detection that reads meaning and structure, not just wording, is what catches it.

Astra reports an AI-refined signal for exactly this pattern — see the AI paraphrase & rewrite detector.

06Privacy

Private for client and unpublished work

Drafts, embargoed articles and client copy are never uploaded or stored.

Everything is analyzed in your browser; drafts, embargoed articles and client copy are never uploaded or stored.

That matters because uploading a client's unpublished copy to a server-side tool can breach an NDA.

See the private AI detector.

07Policy

How to set an AI content policy your writers can follow

A clear policy prevents most disputes before a single draft is checked.

Detection is imperfect, so a written policy — not a tool — is your first line of defense. Publishers and editorial bodies that handle AI use well tend to converge on a few principles you can adopt:

Define acceptable use

Say plainly where AI is fine (research, outlining, grammar and spelling, headline brainstorming) and where it isn't (drafting whole sections, inventing quotes, generating sources).

Require disclosure

Ask writers to note when and how they used AI. Because no detector is conclusive, disclosure — not detection — is the standard most reputable publishers now lead with.

Name a verification step

Decide who runs the AI content check, at what stage, and that a flag opens a conversation rather than triggering an automatic rejection.

Set proportionate consequences

A first flagged piece usually means revise and disclose, not a ban — reserve firmer action for undisclosed, repeated, or fabricated material.

Put it in the agreement

Fold the policy into your contributor or freelance contract so expectations are set before work begins.

Revisit the policy every few months. Model quality and the tools your writers reach for change quickly, and a policy written a year ago may already describe a world that no longer exists.

08Red flags

What editors notice in AI-written drafts (before running a check)

The tool gives you a score; these are the surface signs that make a passage worth a second look in the first place.

None of these is proof on its own — strong human writing can share a few, and careful AI use avoids them — but several together are worth a closer read:

Flat, even rhythm

Paragraphs of near-identical length, and sentences that rarely vary in shape or length.

Generic framing

Openers like "In today's fast-paced world," and conclusions that restate the piece without adding anything.

Confident but sourceless claims

Specific-sounding facts, statistics or quotes with nothing behind them.

Citations that don't check out

References that look plausible but point to the wrong paper — or to a source that doesn't exist at all.

No first-hand detail

An absence of named examples, lived experience, or the small specifics only someone close to the topic would think to include.

Repetitive connective tissue

"Moreover," "Furthermore," and a tidy three-item list on almost every point.

Use these alongside the detector, not instead of it. The tool surfaces the passages; your editorial eye decides what they mean — and whether the fix is a rewrite, a fact-check, or a note back to the writer.

09Submissions

Screening guest posts and unsolicited submissions

A quick screen protects both your standards and your rankings from pitches produced at volume.

Open submission inboxes attract guest posts and outreach pitches produced at volume, often to place a backlink rather than to inform your readers. Publishing them thins your site and edges toward what Google calls scaled content abuse — the mass-produced, low-value pages its guidance targets. A quick screen protects both your standards and your rankings:

Check the draft, not just the pitch

Run the article through the detector and read the highlighted passages before you reply.

Follow the links

Note where the outbound links point; a thin piece built around a single commercial link is a signal in itself.

Test for first-hand value

Ask whether the piece contains anything — data, examples, genuine expertise — a reader couldn't get from a generic AI answer.

Verify the author

Look for a real byline, a portfolio, and a track record behind the submission.

Because Astra runs entirely in your browser, you can screen a stack of unsolicited drafts without uploading anyone's copy to a third-party server — useful when you're triaging pitches you never asked for and have no reason to store.

10Triage

Decide which content to check most closely

You can't hand-review everything, so spend scrutiny where a mistake would cost the most.

A simple two-tier split works for most teams:

Check closely

news and time-sensitive pieces, "your money or your life" topics (health, finance, legal), anything carrying your masthead's authority, and paid freelance deliverables. Fabricated facts and invented citations do the most damage here.

Spot-check

low-stakes evergreen, internal drafts, and routine updates where an error is cheap to fix and easy to catch in normal editing.

Within the high-scrutiny tier, read the whole piece and the sentence-level highlights. In the lighter tier, a quick scan of the sections most likely to be padded is usually enough. The point isn't to catch every AI-assisted sentence — plenty of good work uses AI legitimately — but to make sure the content most likely to mislead a reader, or to fall short of Google's helpful-content expectations, gets a real human read before it ships.

11Questions

Publisher & writer FAQ

Disclosure, permissions, Google, and how to verify freelance and agency work.

Should we disclose when our writers use AI?

Most reputable publishers now ask for it: disclose substantive AI use, such as AI-drafted sections, while routine grammar or spelling help usually needs no note. Because detection is never conclusive, disclosure is the standard editorial bodies lead with, not detection alone.

Do we need a writer's permission before running an AI content check?

You don't need permission to check work you've been given, but it's fairer, and more productive, to tell contributors upfront that submissions may be screened. Treat a flag as a question to discuss, not an accusation, since a score is never proof of authorship.

Will everyday tools like grammar checkers make writing look AI-generated?

Light editing from spelling and grammar tools rarely moves the result much. Scores climb when large blocks are drafted or heavily rewritten by a model; the smoothing that ordinary proofreading does is not the same as machine-written prose.

Can I check an entire article at once?

You can paste up to 5,000 words per check and split anything longer into sections. Checking in parts is often more useful anyway, since it shows which passages of a long piece read as AI rather than one blended score for the whole thing.

Does Google penalize AI content?

Not for using AI as such — it targets low-value, scaled content made to manipulate rankings, and rewards helpful, people-first content. Human review and editing still matter.

How do I verify a freelancer's work is human?

Run the piece through Astra, review the highlighted sentences, and weigh the result against the brief and the writer's drafts — treating a flag as a prompt to discuss, not proof.

Does it catch paraphrased or rewritten AI?

Often — detection that reads meaning and structure, not just wording, catches reworded AI. See the paraphrase detector.

Can I check SEO or marketing copy?

Yes — paste or upload articles, landing-page copy, product descriptions or emails; the analysis works across formats.

Is it free and private for client work?

Yes — free, no sign-up, and content is analyzed in your browser, never uploaded, which helps you avoid NDA and confidentiality issues.

How accurate is it for editorial use?

No detector is 100%. Use it as one input alongside editorial judgement — see accuracy & limitations.

AI-generated
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High Confidence