An annotated PDF
Numbered markers, highlights and margin notes drawn on the pages themselves, with a cover summary.
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Review your paper scientifically before submission
SciRedPen reviews text, figures, tables and references, then returns a traceable report and annotated PDF.
One review included when you create an account. No card required.
Your manuscript is sent to OpenAI to produce the review, and deleted after 7 days unless you delete it sooner. How your manuscript is handled
- Drawn only when the quote matches the page
- Finished only when two checks in a row change nothing
- Cited DOIs checked against Crossref
- Failed review? The credit is refunded automatically
Outputs
What comes back
Three deliverables per manuscript, each traceable to what produced it.
An annotated PDF
Numbered markers, highlights and margin notes drawn on the pages themselves, with a cover summary.
A Markdown review
Overall appreciation, recommendation, and findings ordered by severity, plus an audit of everything the tool declined to place, and why.
An evidence bundle you can audit
The structured review, the document manifest, the DOI checks, and the raw output of every pass, so a claim can be traced back to what produced it.
Protocol
How a review runs
Not one prompt. A protocol of successive passes, each with a different job, ending only when two consecutive validations agree.
DOIs found in the manuscript are checked against Crossref metadata, and the raw output of every pass is kept in the evidence bundle rather than summarised away.
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Extraction
Page text, word geometry, existing annotations and figure counts are read from the PDF, so later passes argue about a document rather than about a blob of text.
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Whole-paper review
The complete PDF goes to the model as a file, alongside the extracted text: the argument is judged as a whole before any page is looked at closely.
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Visual page windows
Every page is then reviewed as an image, in overlapping windows. Overlap is what keeps a finding from falling between two windows; coverage is recorded.
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A second reviewer
A separate pass attacks the review itself, looking for omissions, contradictions and claims the manuscript does not support.
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Repeated until nothing changes
Review and revision alternate until two consecutive validations report no material change, or until a maximum number of rounds is reached.
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Evidence-matched placement
Each finding's quote is matched back to the actual word boxes on the page. What matches is drawn; what does not is kept in the audit instead of being placed approximately.
Pricing
One review is included when you create an account. After that, two options and nothing else.
Single review
$6
per review, no commitment
- Full protocol, same as the subscription
- Markdown review, annotated PDF, evidence bundle
- Credits never expire
Subscription
$19/month
5 reviews a month, $3.80 each
- 5 review credits every month
- Batch several manuscripts in one run
- Cancel at any time
Payment is handled by Stripe. Card details never reach this server.
Your manuscript is sent to OpenAI to produce the review, and deleted after 7 days unless you delete it sooner. How your manuscript is handled
Questions, answered
Who can see my manuscript?
Your account controls access inside SciRedPen. To produce a review, the manuscript and extracted content are sent to OpenAI; DOI strings may be sent to Crossref for metadata checks. The project is kept for 7 days unless you delete it sooner. A queued or running review must finish before it can be deleted.
What can I submit?
PDF only. A scanned PDF with no text layer cannot be reviewed.
Up to 32 MB per manuscript.
Can I close the tab while a review runs?
Yes. A review runs on the server as a queued job. Come back later, from any device once signed in, and it is where you left it, with its real progress.
What happens if a review fails?
The credit is refunded automatically and the cause is named: an unreadable PDF, an unavailable model or a rendering failure. There is nothing to claim.
What if I upload the same manuscript twice?
You get the review you already have, without spending another credit, even if the file was renamed. A failed review can be submitted again.
Why are some findings not drawn on the PDF?
A finding is only drawn when its quote matches the words on the page. Anything that cannot be placed precisely stays in the audit, with the reason, rather than being pinned somewhere approximate.
How do I sign in?
With an email address and a password or, where the server offers them, a Google or Microsoft (Outlook) account.
Read your manuscript the way a reviewer will, before one does.
One review included when you create an account. No card required.