Secure PDF Merger - Combine PDFs Locally, No Uploads

Merge PDF files locally in your browser for free. Reorder files, combine them, and download the result without uploading contracts, invoices, or reports.

Click for theater mode

Drop PDF files here

Or click to select files. PDFs are processed locally in your browser, with no server upload.

PDF bytes never leave your browser.

Select PDF files to begin

Merge Order

0 PDFs ready. Reorder them before merging.
Select at least two PDF files, then adjust their merge order here.

How to Use

  1. Click "Select PDF Files" or drag the PDFs you want to combine into the file area.
  2. Add at least two PDFs, then check the order in the "Merge Order" list.
  3. Drag file cards, or use "Move Up" and "Move Down" to adjust the sequence.
  4. Click "Merge PDF" and wait for the local merge to finish.
  5. Click "Download Merged PDF" to save the result to your device.

Core Features

  • Merge PDFs without uploads: PDF parsing, page copying, and merging happen in your browser, so file bytes stay on your device.
  • Safer for sensitive documents: Combine contracts, invoices, quotes, and internal reports without handing them to a cloud PDF service.
  • Reorder before you merge: Drag PDF cards or use "Move Up" and "Move Down" so the final document follows the exact sequence you need.
  • Download the merged PDF instantly: After merging, save the combined PDF from the browser with the "Download Merged PDF" action.
  • No platform upload limits: EasyTools does not set upload quotas; practical limits depend on your device memory, browser, and PDF complexity.

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Calculation Logic

This tool uses pdf-lib in the browser to read each PDF, copy its pages, and append them to a new PDF document. The workflow uses local memory, the File API, and a Blob download URL.

EasyTools does not send PDF bytes to a server. Because there is no remote transfer step, performance mainly depends on page count, file size, device speed, and browser memory. Password-protected or structurally unusual PDFs may fail if the browser-side engine cannot read them.

FAQ

Are my PDF files saved anywhere?

No. PDF merging runs locally in your browser, and EasyTools servers do not receive, store, or inspect your file bytes.

Is there a file size limit for merging?

EasyTools does not set an upload quota. Very large PDFs are limited by your device memory, browser limits, and PDF complexity.

How can I merge PDFs without Adobe?

Select two or more PDFs, check the order, and click "Merge PDF". The process runs locally in your browser, so you do not need Adobe Acrobat or a cloud upload service.

Can I merge PDFs on mobile?

Yes. Modern mobile browsers with File API support can run the tool, although large files may be slower or memory constrained.

Will the merged PDF lose quality?

No. The tool copies pages from the original PDFs and combines them in order without lossy recompression.

Can password-protected PDFs be merged?

If the browser-side PDF engine cannot read an encrypted or restricted file, the tool will show a read or merge error. Unlock files you are allowed to edit before merging them.