Merge PDF Online

Drag several files into the drop zone, or click Upload PDFs to select them. Each file becomes a thumbnail card showing its page count, and the workspace opens automatically.

Drag the cards into the sequence you want, or use the left/right arrows on each card. The document will be built top-to-bottom in this order.

Click Add More to bring in extra files, use the X on a card to remove one, or Clear All to start over. The summary panel shows total files and total pages.

If your pages have different dimensions, switch on Standardize to A4 to scale them to a uniform A4 canvas with the content centered.

Click Merge PDFs Now, watch the progress bar, then download the combined file.

Yes. Merging is completely free, the tool never stamps a watermark on your document, and there's no account to create. You add your files, set the order, and download the result. Many online mergers either watermark the free output or push you to register after the first file — this one doesn't.

Yes, because your files never leave your device. They're read into your browser and combined locally, so nothing is uploaded to a server. That matters for contracts, IDs, and financial records, where most online mergers send your documents to a remote machine you can't see. When you close the tab, the files are gone from memory.

Drag the thumbnail cards into the sequence you want, or use the left/right arrow buttons on each card. The merged file is built top to bottom in that exact order. The summary panel shows the total files and pages, so you can confirm the structure before you click Merge.

Yes. By default the tool keeps each page at its original size, so a small receipt and a wide slide stay as they are. If you'd rather have a uniform document, switch on Standardize to A4 — it scales every page to a standard A4 canvas and centers the content, which is better for a clean report or booklet.

No. Merging stitches the existing pages together without re-compressing them, so text stays sharp and images keep their original resolution. Quality only changes if you deliberately run the file through a compressor afterward. If the combined document ends up large, that's from adding pages, not from quality loss.

There's no fixed limit on the number of files or total size — no paywall, no daily cap. The real constraint is your device's memory, since everything is held in the browser while it merges. Desktops handle large batches easily; on a phone, very big jobs can be slow, so merge in smaller groups if a tab struggles.

Yes. The tool works in any modern browser on iPhone or Android — no app needed. Open the page, choose your PDFs from Files or your downloads, drag them into order, and download. Because the merge uses memory, very large batches are smoother on a laptop than on an older phone.

This tool arranges and joins whole files in the order you set — it doesn't reorder pages inside a single document. If you need to move or drop specific pages first, use Rearrange Pages or Extract Pages, then bring the result back here to merge.

Yes. Use Add More to bring extra PDFs into the workspace at any point, the X on a card to remove a single file, or Clear All to start fresh. The files-and-pages summary updates as you go, so the count always reflects what will actually be merged.

Not while it's locked. An encrypted PDF has to be unlocked first, because the tool can't read a file it can't open. Remove the password to get an unprotected copy with our Unlock PDF tool, merge it, and re-apply protection afterward if you still need it.

Merging adds pages, so a combined file can get big — especially with scans or images. After merging, run the document through Compress PDF to reduce its size for email or an upload limit. You can choose how much to compress and watch the estimated size before downloading.

No. Everything runs in your web browser, so there's nothing to download or install and no Adobe account required. It works the same on Windows, Mac, Linux, and mobile — open the page, merge, and download.