Type and search for 'ILovePDF' or click 'ilovepdf.com'.
After that, click on the 'Merge PDF' section.
Click 'Select PDF'.
Select the PDF file upload option:
Google Drive.
Dropbox.
Camera.
Voice Recorder.
File Manager.
Select the PDF files you want to merge.
Wait for it to upload.
After that click the '+' icon on the right side.
Select the PDF file again.
Click 'Merge PDF'.
Wait a moment.
Click 'Download Merged PDF'.
Done.
SmallPDF
Next, there is a free site used to merge PDFs, namely SmallPDF. Here you can also separate PDFs, rotate PDFs, delete pages in PDFs and others.
Here's how to merge PDFs using SmallPDF, namely:
Open the browser on your smartphone.
Type and search for 'SmallPDF' or click 'smallpdf.com'.
After that, click 'Tools' which is on the top left.
Click on the 'Merge PDF' section.
Click 'Select Files'.
Select upload options:
Device.
Dropbox.
Google Drive.
Camera.
Voice Recorder.
Select the PDF files you want to merge.
Wait until the upload is complete.
After that, click the '+' icon in the top left corner.
Select the PDF file again.
Wait until the upload is complete.
Click 'Finish'.
Wait until the merging process is complete.
Click 'Download'.
Done.
CloudConvert
Next, there is CloudConvert as a document site that you can use for free to merge PDFs. Here you can also convert documents, compress documents and others.
Here's how to merge PDFs using CloudConvert, namely: