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PDF.chat

pdf.chat

From $4/mo Free plan WebAPI
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Spec score 8.6 #5 of 27 in AI PDF Assistants

What it is

PDF.chat lets users upload documents, ask questions, and receive answers cited to exact pages in over 100 languages. It accepts PDFs, Word and PowerPoint files, text files, and images, including scanned or photographed documents that its OCR models read on its own infrastructure. Long documents are indexed so questions can retrieve relevant pages from reports, textbooks, and dockets. Users can compare Claude, GPT, Gemini, Llama, and DeepSeek answers side by side in one chat, then export results as plain text, Markdown, DOCX, searchable PDF, CSV, or JSON. The service runs in a browser without a download or installation. Its REST API ingests documents, returns per-page text and metadata, and supports chat with page citations; API use is metered per page. The Free plan costs nothing, with pages resetting at midnight UTC and no credit card required. Starter costs $5 a month and includes 750 pages per month. PDF.chat says files are automatically deleted shortly after processing and are not sold, shared, or used for training; on paid tiers, relevant passages may be sent to third-party AI providers.

Spec sheet

What it does
PDF.chat lets users upload PDFs and other documents, ask questions, and receive answers cited to exact source pages in more than 100 languages.Read 15 Oct 2026 · pdf.chat
API
The public API is a REST interface for document upload, OCR, polling jobs, page-cited chat, history retrieval and format downloads.Read 15 Oct 2026 · pdf.chat
Privacy
Uploaded files are deleted automatically shortly after processing, and PDF.chat says it never sells, shares or trains on users’ documents.Read 1 Oct 2026 · pdf.chat
Support
Starter includes email support, Business adds priority support, and security or data-processing questions can be sent to [email protected].Read 15 Oct 2026 · pdf.chat
Accuracy limitation
The terms warn that AI answers and extraction can be wrong, especially for poor scans, handwriting, complex layouts and rare languages.Read 15 Oct 2026 · pdf.chat
AI model comparison
Pro users can compare Claude, GPT, Gemini, Llama, DeepSeek and other model answers side by side in one conversation.Read 15 Oct 2026 · pdf.chat
API authentication
API calls use a bearer token from the account page, with query-parameter tokens also supported.Read 15 Oct 2026 · pdf.chat
API error behavior
Document processing can return 400, 401, 402, 404 or 409 errors for invalid files, authentication, exhausted pages, unknown jobs or premature downloads.Read 15 Oct 2026 · pdf.chat
API inputs and outputs
API input includes PDF, Word, PowerPoint, text and image files; extracted output includes text, Markdown, DOCX, PDF, CSV and JSON.Read 15 Oct 2026 · pdf.chat
API limits
Files of five pages or fewer return inline, while larger jobs are asynchronous and require polling; paid plans raise per-file caps.Read 15 Oct 2026 · pdf.chat
API processing tiers
The API offers a CPU tier for fast printed documents and a premium VLM tier for handwriting, complex layouts, math and translation.Read 15 Oct 2026 · pdf.chat
Automatic deletion
Uploaded files are deleted by an hourly cleanup job shortly after processing, while conversation history and extracted text remain until deleted.Read 15 Oct 2026 · pdf.chat
Browser delivery
PDF.chat runs entirely in a browser and has nothing to download or install.Read 1 Oct 2026 · pdf.chat
Company founder
Muddy Holdings says it was founded by software developer John Nader.Read 15 Oct 2026 · muddyholdings.net
Company founding year
Muddy Holdings lists 2026 as its founded year and describes itself as 100% bootstrapped.Read 15 Oct 2026 · muddyholdings.net
Company owner
PDF.chat is operated by Muddy Holdings LLC, according to its privacy policy and site footer.Read 15 Oct 2026 · pdf.chat
Company portfolio
Muddy Holdings says it operates seven products, including PDF.chat, OCR.chat, TTS.ai, STT.ai, Free.ai, Best.Free and Clip.video.Read 15 Oct 2026 · muddyholdings.net
Core function
PDF.chat lets users upload PDFs or other documents, ask questions, and receive answers cited to the exact page in over 100 languages.Read 1 Oct 2026 · pdf.chat
Exports
Results can be downloaded as TXT, Markdown, DOCX, searchable PDF, CSV or JSON, with tables exportable as Markdown or CSV and equations as LaTeX.Read 15 Oct 2026 · pdf.chat
Independent listing coverage
Trademarkia's owner page lists four pending Muddy Holdings marks, including PDF.CHAT, alongside FREE.AI, STT.AI and TTS.AI.Read 15 Oct 2026 · trademarkia.com
Integrations: AI providers
Paid-tier question passages may be sent to Anthropic, OpenAI, Google or OpenRouter to generate answers.Read 15 Oct 2026 · pdf.chat
Integrations: payments
Stripe and PayPal process payments, while PDF.chat says it receives only transaction confirmation rather than full card numbers.Read 15 Oct 2026 · pdf.chat
Licence
The product licence is not identified as open source; the about page instead says PDF.chat is built using open-source projects such as PaddleOCR, PaddleOCR-VL, DeepSeek-OCR, PyMuPDF, python-docx and openpyxl.Read 15 Oct 2026 · pdf.chat
Limit: no customer self-hosting
The public documentation describes a hosted browser service and REST API; it does not document a customer-deployable self-hosted edition.Read 15 Oct 2026 · pdf.chat
Limit: third-party processing
On paid tiers, relevant document passages are sent to external AI providers; only the free self-hosted model tier keeps model processing on PDF.chat infrastructure.Read 15 Oct 2026 · pdf.chat
Long documents
PDF.chat indexes long documents and retrieves relevant pages for questions about hundred-page reports, textbooks and dockets.Read 1 Oct 2026 · pdf.chat
Long-document retrieval
The service indexes long documents and retrieves relevant pages for reports, textbooks, books and dockets.Read 15 Oct 2026 · pdf.chat
OCR
Scanned and photographed PDFs are processed with OCR before chatting.Read 15 Oct 2026 · pdf.chat
Ownership
PDF.chat is operated by Muddy Holdings LLC, which says it builds and operates PDF.chat among its technology products.Read 1 Oct 2026 · muddyholdings.net
Page citations
Responses link claims to the source page and let users jump to the cited passage.Read 15 Oct 2026 · pdf.chat
Payment integrations
Stripe and PayPal process payments directly, while PDF.chat receives only transaction confirmation.Read 1 Oct 2026 · pdf.chat
Pricing policy
Subscription pages are added each billing cycle, purchased pages never expire, and pricing may change with 30 days notice.Read 15 Oct 2026 · pdf.chat
Private mode
A fully private mode that keeps documents on PDF.chat infrastructure without third-party model providers is described as coming later.Read 15 Oct 2026 · pdf.chat
Rating on PDF.chat homepage
3.7 out of 5 from 6 page-feedback ratingsRead 15 Oct 2026 · pdf.chat
Rating on PDF.chat pricing page
4.0 out of 5 from 1 page-feedback ratingRead 15 Oct 2026 · pdf.chat
SDKs
No official SDK is provided; the documentation supplies cURL, Python requests and JavaScript fetch examples for the REST API.Read 15 Oct 2026 · pdf.chat
Security measures
The service uses HTTPS encryption, hashed passwords, access controls and automatic deletion of processed files.Read 1 Oct 2026 · pdf.chat
Security transport
Uploads are sent over HTTPS/TLS, and the privacy policy also describes hashed passwords and access controls.Read 15 Oct 2026 · pdf.chat
Service limitation
The terms disclaim uninterrupted or error-free availability and say API availability is not guaranteed.Read 15 Oct 2026 · pdf.chat
Side-by-side reader
The original document is displayed beside the conversation, and clicking a citation scrolls to the relevant page.Read 15 Oct 2026 · pdf.chat
Summaries
Uploading a document can produce an immediate summary and suggested starter questions.Read 15 Oct 2026 · pdf.chat
Supported inputs
The service accepts PDF, Word, PowerPoint, text and image files including PNG, JPG, WEBP, GIF, BMP and TIFF.Read 15 Oct 2026 · pdf.chat
Supported languages
PDF.chat states that document conversations support more than 100 languages, including Latin, CJK, Arabic, Cyrillic and Indic scripts.Read 15 Oct 2026 · pdf.chat
Third-party processing
On paid tiers, relevant document passages may be sent to Anthropic, OpenAI, Google or OpenRouter; the free self-hosted tier keeps the document on PDF.chat infrastructure.Read 1 Oct 2026 · pdf.chat
Trademark classification
The PDF.CHAT trademark is listed in international class 42 for computer and software services.Read 15 Oct 2026 · trademarkia.com
Trademark filing
Trademarkia lists a live/pending PDF.CHAT application owned by Muddy Holdings LLC, serial 99912421, filed June 29, 2026.Read 15 Oct 2026 · trademarkia.com
Trademark wording
Trademarkia records the mark's wording as PORTABLE DOCUMENT FORMAT CHAT and PDF CHAT.Read 15 Oct 2026 · trademarkia.com
Training policy
PDF.chat says it does not sell documents or use documents, questions or generated answers to train AI models.Read 15 Oct 2026 · pdf.chat

Plans and prices

Free Free free pages reset at midnight UTC · no credit card Read 1 Oct 2026 · pdf.chat
Small pack $5, paid once one-time payment 300 pages · pages never expire · highest-accuracy AI models · TXT, MD, DOCX, searchable PDF, JSON, CSV · API access Read 15 Oct 2026 · pdf.chat
Starter $5 a month monthly; page shows $9 crossed out and $5/mo 750 pages/month · highest-accuracy AI models · TXT, MD, DOCX, searchable PDF, JSON, CSV · email support Read 15 Oct 2026 · pdf.chat
Medium pack $15, paid once one-time payment 1,200 pages · pages never expire · highest-accuracy AI models · TXT, MD, DOCX, searchable PDF, JSON, CSV · API access Read 15 Oct 2026 · pdf.chat
Pro $19 a month monthly; page shows $29 crossed out and $19/mo 3,000 pages/month · highest-accuracy AI models · TXT, MD, DOCX, searchable PDF, JSON, CSV · API access · batch processing Read 15 Oct 2026 · pdf.chat
Large pack $40, paid once one-time payment 4,000 pages · pages never expire · highest-accuracy AI models · TXT, MD, DOCX, searchable PDF, JSON, CSV · API access Read 15 Oct 2026 · pdf.chat
Starter $48 a year annual payment 9,000 pages/year · highest-accuracy AI models · TXT, MD, DOCX, searchable PDF, JSON, CSV · email support Read 15 Oct 2026 · pdf.chat
Business $49 a month monthly; page shows $79 crossed out and $49/mo 10,000 pages/month · highest-accuracy AI models · TXT, MD, DOCX, searchable PDF, JSON, CSV · API access · batch processing · priority queue and support Read 15 Oct 2026 · pdf.chat
Pro $182 a year annual payment 36,000 pages/year · highest-accuracy AI models · TXT, MD, DOCX, searchable PDF, JSON, CSV · API access · batch processing Read 15 Oct 2026 · pdf.chat
Business $470 a year annual payment 120,000 pages/year · highest-accuracy AI models · TXT, MD, DOCX, searchable PDF, JSON, CSV · API access · batch processing · priority queue and support Read 15 Oct 2026 · pdf.chat

Every PDF.chat plan and price →

Strong points and limits

Strong points

  • Answers cite exact pages in over 100 languages.
  • OCR reads scanned and photographed documents.
  • Compares five named AI model families side by side.
  • Exports to text, Markdown, DOCX, PDF, CSV, or JSON.
  • Browser-based access requires no installation.

Limits

  • Free-plan pages reset at midnight UTC.
  • API use is metered per page.
  • Paid tiers may send passages to third-party AI providers.

Who it suits

PDF.chat suits people who need to question documents and trace answers to page citations, including users working with scanned files or long reports. Its browser access and API also serve web users and developers integrating document workflows.

Verdict

PDF.chat combines page-cited document questions with OCR, exports, and model comparison. The free pages reset daily at midnight UTC; Starter costs $5 a month for 750 monthly pages.

Where Specifiction places it

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