AI document workspace
Upload anything. Ask everything. Verify every answer.
CruxDoc reads your documents end to end and answers with the exact page cited, checked against the source. Study systems for students, contract review for legal teams, literature analysis for researchers.
Drop a document to get started
PDF, Word, PowerPoint, text, images, audio or video. Up to 20 MB and 50 pages. No account needed for your first one.
Processing continues if you close the tab.
Without an account: 1 document, up to 50 pages, 3 questions, kept for 24 hours. Sign up any time and it comes with you.
One workspace, shaped to your work
Pick what defines you and the workspace follows: the tools, the suggestions, the artifacts. The reading engine underneath is the same for everyone.
For students
Turn study material into an exam-ready system
- Summaries and answers cited to the page
- Flashcards with spaced repetition and Anki export
- Exam-mode quizzes and blurting, graded against the source
For legal & compliance
Review contracts with quotes you can trust
- Risk review from your side of the deal, in chat
- Lawyer-ready reports, deadline calendars, version compare
- Playbook checks against your standard positions
For researchers
Read papers faster without losing the source
- Paper snapshots: question, method, sample, limitations
- Literature matrices across up to four papers
- Reference extraction with BibTeX export
AI that invents quotes fails everyone
A fabricated citation fails your exam, loses your case, and retracts your paper. So CruxDoc checks every quoted citation against the source text on the server, before it reaches you. What cannot be verified is marked, never dressed up.
- Chat that reads everythingSummaries and reviews read the whole document, not a lucky sample of it.
- Verified citationsEvery quote is string-matched against the page before you see it.
- Any formatPDF, Word, PowerPoint, scans, images, audio, video, YouTube.
- Artifacts that leavePDF reports, calendar files, Anki decks, BibTeX - your work, portable.
“Customers renew at a rate of 94 percent annually.”
match on page 12p. 12
“As stated on page 47, mitochondria store genetic memory.”
no match. Not rendered as a citation
Frequently asked questions
Q.01What makes CruxDoc different from asking ChatGPT?
CruxDoc answers only from your documents and verifies every quoted citation against the source text before showing it. A quote that cannot be matched to the page is flagged, never dressed up as fact.
Q.02What file types can I upload?
PDF, Word, PowerPoint, plain text, images and scans (with OCR), audio, video, and YouTube links. Scanned documents are read page by page with OCR confidence tracked.
Q.03Is it free?
Yes - you can upload your first document and ask questions without an account. A free account keeps your library and unlocks the study, legal, and research workspaces; Pro raises the limits.
Q.04How do the role workspaces work?
At signup you pick what defines you - student, researcher, or legal & compliance - and the sidebar shapes itself to your work. You can change roles any time in settings; the core library, chat, and reader are the same for everyone.
Q.05Is my data used to train AI models?
No. Your documents are yours: they are not used for training unless you explicitly opt in, and you can delete them at any time.
Whatever you read for a living, read it verified.
Drop a document to get started
PDF, Word, PowerPoint, text, images, audio or video. Up to 20 MB and 50 pages. Free. No account needed for your first one.
Processing continues if you close the tab.
No account needed for your first document.