Why Merge PDFs Locally?
Most commercial online PDF utilities upload your documents to third-party cloud servers to perform merging operations. If you are handling sensitive documents such as tax returns, NDAs, medical records, or proprietary corporate agreements, uploading them to unknown cloud servers creates serious privacy and compliance risks.
TabKit Tools PDF Merger executes entirely inside your browser using client-side WebAssembly and JavaScript binary streams. There are zero file size caps, zero queues, and zero bytes transferred across the internet.
Drag, Drop & Reorder
Easily reorder pages and files using arrow controls before generating your final merged file.
Preserve Vector Quality
All original vector paths, typography, form fields, and embedded images remain pixel-perfect.
Frequently Asked Questions
Are my PDF files uploaded to any external server?
No. All file processing, page merging, and binary assembly occur directly inside your browser memory using WebAssembly. Disconnecting your internet connection before merging will still work 100%.
Is there any file size limit or watermarking?
No. We never inject watermarks, restrict document page counts, or charge fees. The only limit is the available memory on your machine.
Can I reorder files before merging?
Yes. Use the up and down arrow controls next to each uploaded PDF file in the queue to specify the exact sequence of pages in the output document.