Merge PDF

Combine multiple PDF files into one

Drag & drop PDFs here

or click to browse • Add 2 or more PDFs to merge

About PDF Merging

Combine two or more PDF files into a single document. Simply upload your PDFs, drag to reorder them, and merge. The original formatting and quality are preserved.

Benefits of Merging PDFs

Combine unlimited PDF files
Drag and drop to reorder
Preserves original quality
No file size limits

Merge multiple PDF files into a single, professional document in seconds. Our high-performance, browser-based tool allows you to combine an unlimited number of files with absolute precision. Use our intuitive drag-and-drop interface to reorder pages and maintain perfect formatting across all merged documents. Ideal for legal exhibits, medical records, or creative portfolios—all processed with 100% privacy on your local device.

PDF merging, technically known as PDF concatenation, is the process of joining the internal object trees of multiple independent PDF documents into a single unified file. This process doesn't just 'paste' files together; it intelligently merges the 'Pages' dictionaries, reconciles font resources, and updates the cross-reference (XREF) tables to ensure the final document is optimized, searchable, and compatible with all PDF viewers.

Assembling Legal and Real Estate Packages

Consolidate separate contracts, addendums, identity documents, and closing disclosures into a single master PDF for easier signing and digital filing.

Academic Research & Thesis Compilation

Join individual chapters, bibliographies, and data appendices into one cohesive academic paper or thesis while preserving citations and page numbering.

Business Reporting

Combine monthly sales reports, market analysis graphs, and executive summaries into one comprehensive monthly review for stakeholders.

Our tool utilizes a powerful client-side PDF engine that parses the binary structure of each uploaded document. Instead of converting pages to images (which loses quality), we manipulate the raw PDF streams. We extract the page objects, remap their resources to avoid conflicts, and generate a new document catalog. This ensures that text remains selectable, links remain clickable, and the file size remains as small as possible.

Frequently Asked Questions

Does merging PDFs reduce the quality of my documents?

Not at all. Since we merge the internal data streams rather than re-rendering the pages, your text, vector graphics, and images stay at their original resolution and quality.

Is there a limit on the number of files I can merge?

Our tool does not impose a hard limit on the number of files. However, merging very large files (e.g., thousands of pages) depends on your browser's available memory. For most standard business and personal tasks, there are no practical limits.

Can I merge password-protected PDFs?

To ensure security and legal compliance, the PDF files must be unlocked before merging. You can use a PDF password remover first, then upload the unlocked files here.