Free · Runs on your device · No signup

Merge PDF Online Free

Combine PDF files in a chosen order without rasterizing pages.

Processed locally in your browser. Document bytes are not sent to OpenFileTools.
Add PDF filesPDF files · 200 MB combined safety limitChoose from your device or drag and drop files here.

Choose source files to begin.

Why this tool is different

Combine PDF files in a chosen order without rasterizing pages. The workflow shows source facts, page previews or output planning, and measured result information before download.

Requirements and recommendations

How to use Merge PDF

  • Choose source files within the documented browser safety limits.
  • Review page order, selection, or output settings.
  • Process, inspect the validated result, then download or reprocess.
How OpenFileTools processes it

Local processing, explicit choices.

PDF code is lazy-loaded only on this route. Input signatures and page bounds are checked, work is sequential and cancellable between pages, and the generated PDF is reopened before Download is enabled.

Frequently asked

Questions, answered.

Is this PDF uploaded?

No. Current PDF processing is local to this browser tab; document bytes are not sent to OpenFileTools servers.

Will digital signatures stay valid?

Do not assume so. Modifying a signed PDF generally invalidates its cryptographic signature.

Are forms, links, and bookmarks preserved?

Page content is copied without rasterization, but document-level forms, outlines, attachments, and links are not guaranteed to remain complete.

Related guide

Learn more about this task.

Read the related guide