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Toolmigo

Merge PDF

Combine multiple PDF files into one document. Drag to reorder. No uploads — runs entirely in your browser.

100% Private

Files never leave your browser

Instant

No waiting, no uploads

No Limits

Any file size, unlimited files

Drag & drop PDF files

or click to select multiple files

Preview

Why Merge PDFs?

One Attachment, Not Six

A reviewer opens a single contract instead of hunting through six files in an Outlook thread.

Scanned in Batches

Flatbed scanners split a long document into separate files; merging puts the pages back in order.

Portals Accept One File

Visa applications, tax portals and grant forms usually allow exactly one PDF per upload field.

About Merge PDF

Merge PDF combines multiple PDF files into a single document. Everything happens in your browser, so there's no upload to worry about and no server-imposed size cap— output is bound only by your device's memory.

Source files are read but never modified — the result is a brand-new PDF you can download. Mix scanned and digital PDFs freely; both work the same way. If a source file is encrypted, you'll need to unlock it first — protected PDFs can't be merged directly.

Common Questions

Yes — drag the file rows up or down before clicking Merge. Output page numbers run top-to-bottom in that order.

No, and this is worth knowing before you start. The merged file is assembled as a new document, so a source PDF's bookmark outline and its interactive form fields are left behind. Page text, images, OCR layers and per-page links all come across. If a bookmarked table of contents is the point of the document, merge it in a desktop PDF editor instead.

Every page keeps its own dimensions, so an A4 document merged with US Letter gives you one PDF containing both sizes. Viewers handle that without complaint, but a printer may scale pages to fit the tray — worth a look at the print preview if the mix matters.

No — encrypted PDFs need to be unlocked first. Use Unlock PDF to remove the password, then come back to merge.

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