How to merge PDFs without losing page order or important quality
Merging is straightforward when every source is reviewed, ordered, and preserved. Problems usually come from unclear file order or unnecessary pre-merge compression.
Prepare the source files
Open every PDF, confirm its page count, and rename files so their purpose is obvious. Remove duplicate or obsolete documents before selecting them.
SleekPDF combines all pages from the first file, then all pages from the second, continuing from top to bottom in the displayed list.
Choose the order before processing
Use the arrow controls to arrange documents. The list position, not the filename, controls the final sequence.
For applications, a sensible order might be cover letter, form, identification, supporting evidence, and appendices. Follow the recipient’s instructions when provided.
Decide whether to compress first
Leave pre-merge compression off when fidelity, signatures, forms, links, or bookmarks matter. Enable it only when the combined size is a real problem and a flattened visual copy is acceptable.
After merging, compare the output page count with the sum of the sources, inspect every transition between files, and retain all originals.
How to compress a PDF without uploading the document
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