Smart Split PDF
Split your PDF intelligently — by topic, by headings, or by custom page ranges. AI-powered splitting names each part automatically.
Drop your PDF here to split
Supported: .pdf (up to 100.0 MB)
Frequently Asked Questions
How accurate is the AI splitting?
The AI uses DeepSeek to analyze your document structure. Topic-based splitting identifies natural breaks in content, while heading-based splitting follows your document's heading hierarchy. Accuracy depends on document clarity — well-structured documents yield the best results.
Is my document private when using AI splitting?
Your document content is sent to the DeepSeek API via our server-side proxy for analysis when using AI-based splitting. Page range splitting is done entirely client-side. For sensitive documents, consider using the page range method to keep everything on your device.
What if the AI splitting doesn't give good results?
You can always try the page range method for precise control, or use the topic method with a different prompt. The AI works best on documents with clear section breaks and distinct topics.
What is an API key and why do I need one?
The API key is configured server-side and is not needed on this page. Page range splitting works fully client-side without any API key.