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Merge PDF for researchers
Updated July 2026
Arthize lets researchers and academics merge PDF files in a private workspace — free, with no watermark. Merging PDFs combines several documents — and any JPG or PNG pages — into one file losslessly, so text stays selectable and images stay sharp.
Why researchers merge PDF files
A researcher merges a paper with its appendices, extracts a results table into Excel for re-analysis, and compresses the figure-heavy submission under a journal's upload limit — privately.
Built for papers. Whether it's papers, datasets, appendices, Arthize's merge pdf keeps the work inside your private workspace. Unpublished work and grant applications are confidential; a private workspace keeps them out of public tools.
What matters when you merge PDF files
A proper merge is lossless because it copies existing page objects instead of re-rendering them.
You can reorder individual pages, not just whole files, before merging.
Merging never adds a watermark, even on the free plan.
How to merge PDF files
- 1
Open the merge tool
Sign in and open the Merge tool in your Arthize workspace.
- 2
Add your files
Add every PDF to combine; you can mix in JPG or PNG images, which become pages too.
- 3
Put them in order
Drag the files or individual pages into the exact order you want in the final document.
- 4
Merge and download
Click merge — Arthize rebuilds the page index into one PDF, then deletes the sources.
Common questions
- How do researchers merge PDF files for free?
- Merging PDFs combines several documents — and any JPG or PNG pages — into one file losslessly, so text stays selectable and images stay sharp. On Arthize it's free with no watermark, and the file is deleted after the job — which is why researchers and academics can use it for papers without a confidentiality risk.
- Is it private to merge PDF files sensitive papers?
- Yes. Unpublished work and grant applications are confidential; a private workspace keeps them out of public tools. Files are processed inside your private Arthize workspace and deleted after the job.
- How do I merge PDF files into one for free?
- Merging PDFs combines several documents — and any JPG or PNG pages — into one file losslessly, so text stays selectable and images stay sharp. On Arthize it's free with no watermark and processed privately.
- Will merging reduce the quality of my PDFs?
- Merging PDFs combines several documents — and any JPG or PNG pages — into one file losslessly, so text stays selectable and images stay sharp. On Arthize it's free with no watermark and processed privately.
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