Why avoid online tools for administrative documents?

ID cards, proof of address, tax notices: these are the most sensitive documents there are. Sending them to a third-party server just to merge them is an avoidable risk.

My file exceeds the portal's size limit?

Compress the assembled PDF — often enough to get under the portal's limit without degrading the readability of your documents.

Are my documents stored anywhere?

No. All operations run in browser memory; nothing is stored or transmitted.

Tutorials

PDFs and administrative procedures: prepare a complete file without exposing your documents

Merge, compress and finalize an administrative file in PDF — ID, proof of address, forms — without sending your documents to a server.

Published on September 19, 20265 min readby Hamza El Hajjaji

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Table of contents

The file as a single document

An online procedure asks for “one single PDF”: ID card, proof of address, filled form, scanned photos. You have six scattered files — they must be gathered in order, into one document, under the portal’s size limit.

Brother DS-640 — portable scannerThe classic portable document scanner.affiliate

The local method

Scan paper documents to PDF — photo or scanner, right in the browser.
Merge in the order of the checklist: form first, supporting documents after.
Compress if the portal imposes a size limit.
Check the final rendering before submitting.

Why local changes everything here

Administrative documents are the most sensitive files you handle: identity, address, income, health. Running them through a “free merge PDF” site means copying them to a stranger. Locally, the ID card stays on your machine — the assembled PDF only goes to the official portal, by your hand.