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PDF Tools

Merge PDF Files Online

Combine multiple PDF files locally in a chosen order.

Files are processed locally without uploads, external APIs or automatic storage.

Drop files here or choose them from your device

Files remain in this browser session and are never uploaded.

Maximum 50 MB per file, 150 MB total, 20 files and 500 PDF pages.

Processing is local: files are not uploaded, sent to APIs or stored. Reloading or closing the page clears the session; large documents may exceed your device capacity.

Document verification workflow

A successful merge is an ordered and verified document, not only a downloaded file

The merger copies pages from each selected PDF in the displayed file order and processes them locally. The important editorial work happens before and after merging: naming sources, confirming sequence and reopening the final file.

Worked example: assemble an application packet

Combine a 2-page cover form, a 6-page supporting document and a 4-page appendix.

Inputs and process

  1. 1Rename working copies 01-cover, 02-support and 03-appendix
  2. 2Open every source and record the expected page totals: 2 + 6 + 4
  3. 3Arrange the three files in that order
  4. 4Merge, download and reopen the result

Result

The final PDF should contain 12 pages, with pages 1–2, 3–8 and 9–12 matching the planned sections.

A 12-page result confirms quantity, not correctness. Check the boundaries between files, orientation, legibility and any required signatures or form behavior.

What the tool preserves—and what still needs review

Pages are copied without intentionally rasterizing their visible content, so ordinary text and vector graphics can remain sharp. The tool does not promise to reconstruct document-level features that depend on the source structure.

After download, verify bookmarks, links, forms, annotations, attachments, digital signatures and accessibility tags when they matter to the destination workflow.

Real use cases

Application packets

Combine a cover form, evidence and annexes in a documented order.

Course materials

Join handouts or readings while preserving a separate copy of each source.

Internal records

Assemble related documents locally when policy allows browser-based processing.

Sources and review

Last editorial review:

How to process the file

  1. 1

    Choose compatible files from your device.

  2. 2

    Configure pages, format and output options.

  3. 3

    Process locally and download the prepared result.

Processing and limitations

Local operation

Pages are copied in file order without rasterizing them.

Controlled memory

Temporary resources are released after removal, completion or page exit.

Realistic output

Compatibility depends on the file structure, protection and complexity.

Frequently asked questions

Are files uploaded?

No. They are processed locally without external APIs.

Is there a limit?

Yes: 50 MB per file, 150 MB per session and 500 pages per PDF.

Is everything preserved exactly?

No. PDF and DOCX represent content differently, so results depend on the document.

Does it work with scanned documents?

Page operations do, but text extraction requires selectable text. OCR is not included.

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