Private PDF Merge & Split Utility
Merge multiple PDF documents into a single organized file or extract specific pages and page ranges. Powered entirely by client-side WebAssembly with zero server interaction.
Drop PDF files here to add to merge list
100% processed locally in your browser — zero server uploads
Mask Client PII Before Pasting into ChatGPT
Two-way client-side token anonymization and 1-click restore.
⚙️ How This Tool Works Locally
When you use this tool on PrivacyKit, every byte is processed directly in your device RAM.
- 1. No Network Traffic: No HTTP POST or PUT requests are made to any server. Your internet can even be disconnected.
- 2. Modern Native APIs: Computation uses native HTML5 Canvas, Web Cryptography (SubtleCrypto), and client-side binary parsers.
- 3. Zero Footprint: Closing this browser tab immediately frees the memory buffer. No persistent cookies or caches remain.
💡 Frequently Asked Questions
Is it safe to merge confidential legal or financial PDFs here?
Yes. Commercial PDF merge websites (like iLovePDF or Smallpdf) require uploading your document to their cloud servers. PrivacyKit runs 100% inside your browser; your confidential documents never leave your computer.
How do I specify page ranges when splitting a PDF?
You can enter single pages or ranges separated by commas, such as "1-3, 5, 8-10".
Does merging PDFs degrade text crispness or image quality?
No. The underlying vector paths, fonts, and raster images are stitched directly without lossy recompression.
Can I reorder files before merging?
Yes. Simply drag and drop the file cards to arrange them in your desired sequence.
What is the maximum file size supported?
You can merge standard documents up to several hundred megabytes depending on your device RAM.
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