Many people still install heavy desktop programs just to join two PDF files. In reality, you can merge PDF without software by using a modern browser and a privacy-friendly web app like FreeMergePDF.
If all you need is a quick merge, a free pdf merger no sign up is usually more than enough.
Tools like FreeMergePDF use JavaScript libraries to read PDFs directly in memory. Your browser becomes the PDF engine: no background services, no drivers, no permanent installation. Once you close the tab, everything is gone.
This approach gives you the benefits of a pdf combiner free no sign up without installing anything or uploading files to a third-party server.
Merge PDFs in Your Browser (No Software)Browser tools work best for documents up to a few hundred pages or a few hundred megabytes in total. For extremely large archives or complex editing workflows, a dedicated desktop app might still make sense—but for everyday work, browser-based merging is faster and safer.