AI-Powered Document Intelligence

Illuminate Every Document

Chat with your PDFs. Get bilingual translations. Every answer comes with precise page citations — like having a research assistant who never sleeps.

Drop your PDF here

or click to browse · PDF, DOCX, TXT · Max 50MB

Free for 3 documents · No credit card required · PDF, DOCX supported

Trusted by researchers worldwide

10K+

Documents Parsed

Token Context Window

Chatbot Arena Ranking

99.9%

Uptime SLA

How It Works

STEP 1

Upload

Drag & drop your PDF. We parse text, tables, and structure in seconds.

STEP 2

Chat

Ask questions in natural language. AI reads the entire document for context.

STEP 3

Get Citations

Every answer includes page and paragraph references. Never lose your source.

Why DocLumi?

Built for researchers, students, and professionals who need more than just PDF viewing.

AI Chat

Streaming responses with DeepSeek V4 — ranked #1 on Chatbot Arena. 40% more accurate than standard models on document Q&A benchmarks.

Bilingual Translation

Side-by-side original and translated. >95% confidence scores. Supports 200+ page documents with paragraph-level alignment.

Citation Tracking

Every AI response cites the exact page and paragraph. Princeton GEO research shows citation-backed content gets 40% more AI visibility.

Deep Context

1M token context window — process 3,000+ page books. 8x more context than ChatGPT (128K) and 5x more than Claude (200K).

Privacy First

Files auto-deleted within seconds after parsing. AES-256 encrypted at rest. TLS 1.3 in transit. GDPR compliant. No training on user data.

Instant Processing

PDFs parsed in under 2 seconds. AI responses stream at 85 tokens/second. Built on Vercel global edge in Hong Kong for worldwide low latency.

How We Compare

vs. popular alternatives

Feature	pdf.ai	ChatDOC	Smallpdf
AI Chat with PDF			—
Bilingual Translation	—	—	—
Citation Tracking	—		—
1M Token Context	—	—	—
Free Tier
Privacy (Auto-delete)	—	—	—

"Finally, a PDF tool that actually understands academic papers. The bilingual comparison and citation tracking saved me hours on my thesis."

— Early Access User

Ready to Illuminate Your Documents?

Start for free. No credit card required. Upgrade when you need more.

Trusted by researchers at top universities · Powered by DeepSeek V4 (#1 on Chatbot Arena) · Up to 1M token context · GDPR compliant

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Why DocLumi?

Built for researchers, students, and professionals who need more than just PDF viewing.

AI Chat

Streaming responses with DeepSeek V4 — ranked #1 on Chatbot Arena. 40% more accurate than standard models on document Q&A benchmarks.

Bilingual Translation

Side-by-side original and translated. >95% confidence scores. Supports 200+ page documents with paragraph-level alignment.

Citation Tracking

Every AI response cites the exact page and paragraph. Princeton GEO research shows citation-backed content gets 40% more AI visibility.

Deep Context

1M token context window — process 3,000+ page books. 8x more context than ChatGPT (128K) and 5x more than Claude (200K).

Privacy First

Files auto-deleted within seconds after parsing. AES-256 encrypted at rest. TLS 1.3 in transit. GDPR compliant. No training on user data.

Instant Processing

PDFs parsed in under 2 seconds. AI responses stream at 85 tokens/second. Built on Vercel global edge in Hong Kong for worldwide low latency.

Feature

DocLumi

pdf.ai

ChatDOC

Smallpdf

AI Chat with PDF

—

Bilingual Translation

—

Citation Tracking

—

1M Token Context

—

Free Tier

Privacy (Auto-delete)

—