If your scanner flipped every other page or you merged two stacks in the wrong sequence, you don't need to rescan. Use GekiPDF's merge tool: upload up to 20 files per run, then drag each thumbnail into the correct position before combining. The output copies pages losslessly, so nothing is re-encoded and quality stays identical.
For example, a 40-page document scanned as two 20-page batches can be fixed by reversing one batch and interleaving them manually in the merge step. Mixed page sizes (A4 and letter) are kept as-is. Files up to 50 MB each are accepted, and you get 40 conversions per hour per IP. Files are deleted after one hour.
Frequently asked questions
Can I reorder pages from different files in one merge?
Yes. Upload up to 20 PDFs, then drag individual thumbnails into any order across all files. The merge will follow that exact sequence.
Will reordering change image quality or file size?
No. Pages are copied without re-encoding, so quality and original compression are preserved. Only the order changes.
What if my scan has mixed page sizes like A4 and legal?
That's fine. Each page keeps its own dimensions; the merged PDF will contain pages of different sizes in the order you set.
Do it in the full tool
Open Merge PDF for all options, or jump straight to another step below.
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