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Merge PDF

Combine multiple PDFs into one document in your chosen order.

Processed locally in your browser — your file is not uploaded.
How is this private?

Processing happens in this browser tab, so files are not uploaded to Metyris for processing. Reloading or closing the page clears working data, though your browser may retain temporary files or downloads. Very large files can exceed available browser memory.

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How to use Merge PDF

  1. Select two or more unlocked PDFs.
  2. Arrange files with drag or arrow controls.
  3. Merge the PDFs, review the result, and download.

What does merging preserve?

Pages are copied without turning them into images. Bookmarks, forms, attachments and signatures may not be preserved. Use unlocked PDFs.

No sign-up is required. The calculation or transformation happens in this browser tab and the result is available immediately.

BEFORE YOU RELY ON THE RESULT

Practical guidance

Merging is suited to assembling related documents in a deliberate order, such as a form followed by evidence and supporting pages.

Input and browser limits

Choose at least two readable, unlocked PDFs. Combined input must stay below 100 MB. Large page counts, scans and image-heavy documents can still exceed the memory available to a mobile browser.

Files are read and combined in this browser tab. The output order follows the file list shown above.

What may not survive a merge

Page content and page dimensions are copied, but document-level features are not guaranteed to survive. Check bookmarks, form behavior, attachments, document metadata, annotations and embedded scripts in the downloaded file.

Existing digital signatures should be treated as invalid after any merge because the signed document has changed. Metyris does not decrypt protected PDFs and does not claim to sanitize active content.

A safer document workflow

Keep the originals, merge copies, then open the result and confirm page order, orientation and legibility before submitting it.

Related workflow

PRACTICAL GUIDESPreparing a PDF for an online applicationA practical checklist for assembling, checking and reducing an application PDF without uploading its contents.

Good to know

Can I use a password-protected PDF?+

No. Unlock it in a trusted PDF application first; Metyris does not bypass passwords.

Does processing reduce quality?+

Page-copy tools do not rasterize content. PDF-to-image tools render at your selected resolution.

Is my content uploaded?+

No. Processing happens in this browser tab and the tool does not send your content to a server.

Keep things moving

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