What to know before using it
Merging PDFs is really about the page order of the final document. For proposals, forms, and appendices, do not rely on filenames alone: review the queue and first-page previews before saving.
Free browser tool
Merge multiple PDF files in the selected order and save them as one PDF.
Merge PDF files processes your input in the browser, then lets you inspect or download the result.
Keep the original PDF for important documents and open the downloaded result to verify it before replacing the original.
Merging PDFs is really about the page order of the final document. For proposals, forms, and appendices, do not rely on filenames alone: review the queue and first-page previews before saving.
A practical workflow is body.pdf → figures.pdf → appendix.pdf, then confirm the final page count before sharing.