Merge PDF
Process, convert or edit PDF files client-side using this free online Merge PDF tool.
Drag & drop file here or click to browse
Browser sandbox: files are processed client-side. We never store your data.
How to Use Online PDF Tools
- Click on the dashed drop-zone area at the top to select or drag and drop your PDF files.
- Rearrange page order, or specify the page range (e.g. 1-5, 8) depending on your needs.
- Click the "Process File" button. Once processed, the browser will automatically download the newly generated PDF.
Core Advantages of Our PDF Tools
- Fast Local Processing: Powered by WebAssembly and pdf-lib, generating results locally in seconds without long uploads.
- Private & Secure: Your sensitive documents, contracts, or academic papers are never sent to a server. 100% processed client-side.
- Free & Unlimited: No hidden fees, no limits on page count, and no registration required. Just open and use.
Privacy & Data Security guaranteed
We understand that PDF documents often contain confidential invoices, contracts, or academic assets. Therefore, our PDF tools are designed entirely client-side. All processing runs locally in your browser. You can even use the tool offline with complete privacy.
 FAQ
Q: Are my private files saved to a server?
A: Absolutely not. All processing happens locally in your browser. No files are ever uploaded, ensuring 100% privacy.
Q: Why does it slow down when merging large PDFs?
A: Since processing relies on your browser memory, very large PDFs or high-resolution images (>50MB total) may consume high CPU resources. We suggest processing in smaller batches for optimal performance.