Merge PDFs online without uploading them

Search results for “merge pdf online free no sign up” are full of upload tools. LocalPdfMerge keeps every byte in your browser tab until you download the result.

Steps

  1. Open the merger and stay on the Merge tab.
  2. Drop two or more PDFs (or click to choose). Order matters: use ↑ / ↓ to rearrange.
  3. Click Merge on this device. Wait for the download link.
  4. Optional proof: open DevTools → Network before merging. You should not see your PDF bodies leave the page.

Honest limits

Soft guidance is about 25 MiB per file and about 64 MiB per batch. Phones may need smaller groups. Encrypted or damaged PDFs can fail with a clear message — unlock or repair a copy you own, then retry.

What merge does not claim

The output is a new page-copy document. Digital signatures, bookmarks, and form fields are not guaranteed. We do not market certified redaction or legal-compliance tooling.

Sources