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Toolpit

Merge PDF files

Combine several PDFs into one document.

Processed on your device — never uploaded

About this tool

Combine two or more PDFs into a single document in seconds. Drag your files in, arrange the order, and download the merged PDF — all processed locally in your browser, so nothing is uploaded and nothing is stored.

Your files never leave your device. Toolpit has no upload step and no server that can see your document — the work happens in this tab, on your machine, and stops the moment you close it.

How to merge PDF files

  1. Drop in the PDFs you want to combine, or click to choose them.

  2. Drag the files into the order you want them to appear.

  3. Click Merge, then download the single combined PDF.

Questions

Are my files uploaded anywhere?

No. There is no upload step and no server that could receive the file — the tool runs as code in this browser tab, works on the copy your browser opened, and forgets it when you close the tab. You can check this yourself: open your browser’s network panel and run the tool. You will see the page, its scripts and the ads that pay for the site — and no request carrying your file, because there is no endpoint to carry it to.

How many PDFs can I merge at once?

As many as your device has memory for. There is no imposed limit, because there is no server bill that scales with the number of files — most people merging dozens of documents will hit their patience before they hit a technical ceiling.

Does merging reduce the quality of the pages?

No. Merging copies each page object across unchanged, so text stays text, images keep their original resolution, and nothing is re-compressed. The merged file is roughly the sum of the originals.

Will bookmarks, links and form fields survive?

Links within a page and the page content itself come through intact. Document-level extras — the bookmark outline, and form fields that share names across documents — may not survive the merge, which is a limitation of combining separate documents rather than of this tool.

Related tools

Every one of these runs in your browser too — no upload, no signup, no watermark.