How to merge PDF files
Choose two or more PDF documents. The files will appear in the order they were selected. Use the Move up and Move down buttons if needed, then select Merge PDFs. After the browser checks the inputs and assembles the pages, download merged.pdf. There is no account, payment or server-side upload step.
Page order and output quality
Pages follow the displayed document order. For example, adding a two-page document before a three-page document yields five pages, with all pages from the first file before all pages from the second. The tool copies supported PDF page content rather than flattening each page to an image; ordinary selectable text, vector strokes, rotation and page sizes remain intact.
Supported files and safety limits
The tool accepts well-formed static PDFs up to 20 MiB per file and 40 MiB for combined input. A merge uses at most 200 total pages and produces at most 32 MiB of output. If a file has encryption, signatures, annotations, scripts, forms, damaged structures or unsupported PDF features, the tool rejects it before editing to avoid misrepresenting its output. Some otherwise valid PDFs may be rejected because conservative security rules prioritize predictable results.
Privacy and recovery
Your files remain in the browser tab. Processing can be canceled, inputs can be changed, and a failed merge does not produce a partial success download. For large documents, try fewer files or smaller input files. This browser-local workflow is not an archival or universal PDF-preservation guarantee.