What programming languages does DiffMaster support?

DiffMaster supports JavaScript, TypeScript, Java, C#, Swift, Kotlin, JSON, and plain text files with syntax highlighting and advanced comparison features.

Is DiffMaster free to use?

Yes, DiffMaster is completely free to use. It's a client-side application that processes all comparisons locally in your browser for privacy and security.

Can I export comparison results?

Yes, you can export detailed comparison reports as JSON files with statistics, analysis, and recommendations for code review.

Is my data secure with DiffMaster?

Yes, DiffMaster is 100% secure. All processing is done client-side in your browser. No data is sent to any servers, ensuring complete privacy and security.

Who created DiffMaster?

DiffMaster was created by Cinar Yusuf, a software developer passionate about creating useful developer tools. You can find the source code on GitHub at https://github.com/cinaryusufiu

PDF Merger

Combine multiple PDF files into a single document

Click to upload or drag and drop

PDF files only. You can select multiple files at once.

About PDF Merger

PDF Merger is a powerful tool that combines multiple PDF documents into one seamless file. It preserves the original formatting, images, and layout of each document while merging them in the order you specify. This tool is perfect for consolidating reports, combining scanned documents, or creating comprehensive document packages from multiple sources.

All processing happens locally in your browser for maximum privacy and security. Your files never leave your device, providing complete privacy and security.

How to Use the PDF Merger

Upload Your PDF Files

Click the upload area or drag and drop your PDF files. You can select multiple PDF files at once or add them one by one.

Arrange Files in Order

Arrange the files in your desired order using the up/down arrows. Remove any unwanted files using the X button.

Merge and Download

Click 'Merge & Download PDF' to combine all files. Your merged PDF will automatically download to your device.

Common Use Cases

Document Consolidation

Combine multiple reports, invoices, or contracts into a single PDF for easier sharing and archiving. Perfect for business professionals who need to send comprehensive document packages.

Scanned Document Assembly

Merge individually scanned pages into complete documents. Ideal for digitizing books, multi-page forms, or archived paperwork that was scanned page by page.

Report Compilation

Combine chapters, sections, or appendices from different authors into a unified report. Essential for collaborative projects and academic research papers.

Portfolio Creation

Build professional portfolios by merging work samples, certificates, and credentials into a single presentation-ready document for job applications or client proposals.

Legal Document Preparation

Assemble case files, evidence documents, and exhibits into organized PDF packages for legal proceedings, ensuring all materials are in correct sequential order.

Educational Materials

Combine lecture notes, slides, and supplementary materials into comprehensive study guides for students or training manuals for corporate environments.

Frequently Asked Questions

Is there a limit to how many PDFs I can merge?

There is no strict limit on the number of PDFs you can merge. However, very large files or many large documents may take longer to process and could use significant browser memory. For best performance, we recommend merging files in batches if you have dozens of documents.

Will the merged PDF maintain the original quality?

Yes, absolutely. Our PDF merger preserves the original quality, resolution, formatting, and embedded content of all source documents. Images, fonts, and layouts remain unchanged in the merged output.

Can I change the order of pages after uploading?

Yes! You can rearrange the PDFs before merging using the up and down arrow buttons next to each file. The files will be merged in the order displayed, so arrange them exactly as you want them to appear in the final document.

Are my PDF files uploaded to a server?

No, never. All PDF merging happens entirely in your browser using client-side JavaScript. Your files never leave your device, providing complete privacy and security. No data is stored, collected, or transmitted.

What happens to bookmarks and table of contents?

Basic merging preserves pages but may not maintain complex bookmarks or navigation structures from the original PDFs. The merged file will contain all pages in sequence but may require re-creating navigation elements.

Can I merge password-protected PDFs?

Password-protected PDFs cannot be merged directly. You'll need to remove the password protection from the source files first before merging them. This is a security feature to prevent unauthorized document manipulation.

Does it work with scanned PDFs?

Yes, the merger works perfectly with scanned PDFs, image-based PDFs, and text-based PDFs. All types of PDF documents can be combined regardless of their content type or how they were created.

How long does it take to merge PDFs?

Merging speed depends on the size and number of files. Small to medium documents (under 10MB each) typically merge in seconds. Larger files may take a minute or two. All processing happens locally, so your computer's speed affects performance.

Did You Know?

•Name your files with numbers (01, 02, 03) before uploading for easier ordering
•For large batches, merge in groups of 10-15 files for optimal performance
•Double-check the file order before clicking merge - the order cannot be changed after merging
•The merged PDF filename includes a timestamp for easy organization