Question 1

Is ExactPDF really free?

Accepted Answer

Yes! ExactPDF is 100% free with no hidden costs, no registration required, and no file limits. All tools work directly in your browser.

Question 2

Is my PDF data secure?

Accepted Answer

Absolutely. ExactPDF processes all files locally in your browser. Your files never leave your device and are never uploaded to any server.

Question 3

Do I need to install any software?

Accepted Answer

No installation required. ExactPDF works directly in your web browser on any device - desktop, tablet, or mobile.

Question 4

Can I use ExactPDF offline?

Accepted Answer

Yes! Once the page loads, most tools work offline since all processing happens locally in your browser using WebAssembly.

Question 5

What PDF tools are available?

Accepted Answer

ExactPDF offers 70+ tools: compress PDF, merge PDFs, split PDF, convert images to PDF, PDF to images, edit PDF, add signatures, OCR text extraction, smart redaction, AI Chat with PDF, AI PDF Summarizer, flatten PDF, PDF to PDF/A, resize to A4, and more.

Question 6

How do I compress a PDF to 500KB without a watermark?

Accepted Answer

Use ExactPDF's "Compress PDF to 500KB" tool — set 500KB as the target and download instantly. ExactPDF never adds watermarks. Processing happens entirely in your browser for complete privacy.

Question 7

Why is iLovePDF or Smallpdf blocked by my company firewall?

Accepted Answer

iLovePDF and Smallpdf upload your files to external servers, which triggers corporate DLP policies and firewall rules (such as Zscaler). ExactPDF processes files entirely in your browser — nothing is sent to any server, so it passes corporate firewalls and restricted networks.

Question 8

Can I use PDF tools behind a corporate firewall or Zscaler?

Accepted Answer

Yes. ExactPDF runs 100% in your browser using WebAssembly. No files are uploaded to any server, so corporate DLP policies, Zscaler, Cisco Umbrella, and other proxy filters have nothing to block.

Question 9

How do I compress a PDF that is too large to email or upload?

Accepted Answer

Use ExactPDF's size-targeted compression tools: Compress to 100KB, 500KB, 1MB, or 2MB. There are no file size upload limits and no paid tier needed. The Portal Optimizer tool is specifically designed for government and corporate portal upload limits.

Question 10

How do I chat with a PDF without uploading it?

Accepted Answer

Use ExactPDF's AI Chat with PDF tool. The AI model runs locally in your browser using WebAssembly — your file is never sent to a server. Ask questions about any PDF privately and offline.

Question 11

Does ExactPDF add watermarks to PDFs?

Accepted Answer

No. ExactPDF never adds watermarks to your documents. Compress, merge, convert, or edit PDFs — your output is clean with no branding stamped on it. This is free forever, no premium plan required to remove watermarks.

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工作原理

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