Does KDF Tech work with clients in the USA, Canada, and UK?

Yes. KDF Tech delivers remote custom software, mobile apps, Shopify stores, POS/ERP, and marketplace customization for clients in the USA, Canada, UK, Pakistan, and worldwide.

Does KDF Tech develop mobile apps for Android and iOS?

Yes. We build Flutter Android and iOS apps and publish them on Google Play and the Apple App Store. Multiple customer, seller, and rider apps are already live under our KDF tech Play Store developer account.

Do you customize 6Valley and 6amMart?

Yes. We fully customize and redesign 6Valley and 6amMart — UI/UX, admin panels, Flutter apps, payments, courier integrations, and production deployment. Live examples include Khan Dry Fruits, KPK Collection, and KDF Mart.

Can you design and build a Shopify store?

Yes. We design Shopify storefronts with custom theme UI, banners, category merchandising, and conversion blocks. See our live work at khandryfruit.com.

Do you offer free online tools?

Yes. KDF Tech publishes 200+ free browser tools — calculators, converters, PDF and image utilities, text tools, and generators — at kdftek.com/tools/ for users in the USA, Canada, UK, Australia, Europe, and worldwide.

How can I contact KDF Tech for a project?

Contact us on WhatsApp at +92 345 0144865 or email kdfmarts@gmail.com. You can also submit the project inquiry form on kdftek.com.

Free · No signup · USA · Canada · UK · Worldwide · Updated 2026-09-15

Protect PDF

Answer: Protect PDF: Protect PDF: Add a password to a PDF. Free online tool for the USA, United Kingdom, Canada, Australia, and Europe — runs privately in your browser, no signup — results compute instantly in your browser with no signup.

Protect PDF: Add a password to a PDF. Free online tool for the USA, United Kingdom, Canada, Australia, and Europe — runs privately in your browser, no signup.

PDF file(s)PasswordConfirm password

Runs fully in your browser — files are not uploaded to KDF servers. Soft limit ~25MB per file / 20 files.

Result

Add an open password to your PDF (owned files only).

How to use Protect PDF

Open the free Protect PDF on KDF Tech (kdftek.com).
Enter your values using USD/GBP/EUR/CAD/AUD, metric, or imperial units as labeled.
Copy or download the result — nothing is uploaded; processing stays on your device.

Key facts for search & AI

100% free — no account required.
Runs in your browser — inputs are not uploaded for these calculations.
Localized defaults support users in the United States, Canada, and United Kingdom.
Published by KDF Tech — software, apps, Shopify, and POS systems.

Need a custom product instead? Start a project or WhatsApp +92 345 0144865.

FAQ — answers Google & AI can cite

What is Protect PDF?

Protect PDF: Protect PDF: Add a password to a PDF. Free online tool for the USA, United Kingdom, Canada, Australia, and Europe — runs privately in your browser, no signup — results compute instantly in your browser with no signup.

How does the Protect PDF compute its result?

Protect PDF: Add a password to a PDF. Free online tool for the USA, United Kingdom, Canada, Australia, and Europe — runs privately in your browser, no signup. The on-page tool applies standard arithmetic or text rules to your inputs step by step.

Is Protect PDF useful in the USA, UK, Canada, Australia, and Europe?

Yes — the tool uses locale-neutral math. Enter USD, GBP, EUR, CAD, or AUD amounts and metric or imperial units as labeled. Popular with users across the United States, United Kingdom, Canada, Australia, Germany, France, Netherlands, and the rest of Europe.

What should I double-check after using Protect PDF?

Verify rates, units, and dates against your receipt, contract, or official source — browser tools are aids, not professional, legal, or medical advice.

Is the protect pdf free?

Yes. KDF Tech Protect PDF is free to use with no account required for visitors worldwide.