Fix NotebookLM 20MB/100MB PDF Size Limit | Compress PDF Free

PDF too large for NotebookLM? Compress it below 200MB instantly.

🔒 Files never leave your device⚡ Instant processing in browser💸 100% free — no signup

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Drop your PDF here to fix upload errors

or click to select file — PDF only

Target size (optional)

targeting 200 MB

⚡ File Size Limits (Quick Fix)

•NotebookLM supports PDF uploads up to 200MB per file.

👉 Fix: Compress your file below 200 MB using the tool above.

About this tool

Scanned PDFs and research papers with embedded figures are the most common files that exceed 200MB. Compressing re-encodes the images inside the PDF at lower quality — the text, fonts, and page layout are untouched, so NotebookLM's analysis is unaffected. Having issues uploading PDFs to ChatGPT as well? Try the <a href="/compress-pdf-for-chatgpt">Compress PDF for ChatGPT</a> tool.

How to use this tool

Select or drag and drop your file into the tool above.
Adjust the settings or target size as needed for your specific requirement.
Wait a moment while your file is processed directly in your browser.
Download the final file safely to your device.

💡 Good to know

→NotebookLM supports PDF uploads up to 200MB per file.Google Help ↗
→Compressing a PDF reduces embedded image quality but does not affect the text layer NotebookLM reads for analysis.Google Help ↗
→If compression alone is not enough, splitting the PDF into smaller parts and uploading each separately is the recommended fallback.Google Help ↗

ChatGPT PDF upload failed? Fix it here → Compress PDF for ChatGPT

PDF upload failing in ChatGPT, Gemini, or Claude? Compress it instantly — free, browser-based, no file sent to any server.

Compress PDF for ChatGPT | Fix Upload Failed, Size & Token Errors

PDF too large or upload failing in ChatGPT? Compress your PDF for ChatGPT instantly to fix errors and stay under size and token limits.

❓ Frequently Asked Questions

Does compressing a PDF affect NotebookLM analysis?+

No. NotebookLM reads the text layer of a PDF. Compressing image quality reduces file size without affecting the text content NotebookLM processes.Source: Google Help ↗

What if my PDF is still over 200MB after compression?+

Split the PDF into smaller parts and upload each as a separate source in NotebookLM. Each part must be under 200MB.Source: Google Help ↗

How much can this tool reduce a scanned PDF?+

Scanned PDFs compress significantly. A 300MB scanned document can often be reduced to under 100MB. Text-only PDFs have little room to compress since they contain no embedded images.Source: Google Help ↗

🔒 Files stay on device·🆓 Free forever·📵 No signup required

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