What's the difference between Personal and Studio?

Personal ($39) is for one person — unlimited use on one active device at a time. Activate on a new device and the old one signs out. Studio ($199) is for teams and commercial client work — unlimited team members, early access to new tools, and a commercial license.

Do I need an account?

No. Use any tool free up to 5 times per day on compute-heavier tools, and unlimited on lightweight ones. No card, no account, no signup required.

Where are my files processed?

Right on your device. Files never upload to any server. Everything runs in your browser — you can verify in DevTools → Network.

What happens if I use my Personal license on a second device?

The new device activates and the old device signs out. Your license key stays the same — you just move it between devices as needed. No limit on how often you switch.

Does this work on my phone?

Yes. Every tool works on iPhone, Android, tablet, and desktop.

What if I want a refund?

30-day money-back guarantee on both tiers. No questions asked. Email sales@cipherforces.com.

Will you add more tools?

Yes. New tools ship regularly. Your license includes every tool we ever release — Studio members get early access.

Pdf

Combine PDFs

Join multiple PDF files into one document.

PrivateWorks OfflineNo Account

100% Private Works Offline Instant

Drop your PDFs here

or click to browse

Max 100MB

Upload PDFs to merge

Drag and drop multiple PDF files, then reorder them before merging.

0/5free today

Deep dive

About Combine PDFs.

Combine Multiple PDF Files Into One Document

CipherForces PDF Merger joins multiple PDF files into a single document. Drag and drop your files, reorder them however you want, and download the combined PDF. The entire process runs in your browser — your documents are never uploaded to any server.

This matters because most online PDF mergers (iLovePDF, Smallpdf, Adobe online) upload your files to their servers for processing. If you're merging contracts, tax forms, medical records, or any document with sensitive information, that's a privacy risk you don't need to take.

Common Use Cases

Contracts and agreements: Combine a cover letter, terms, signature pages, and exhibits into one file for signing.
Reports and presentations: Merge individual chapter PDFs, appendices, and cover pages into a single deliverable.
Scanned documents: Join separately scanned pages into one continuous document — receipts, forms, ID copies.
Application packages: Combine a resume, cover letter, references, and portfolio into one PDF for job applications.
School assignments: Merge multiple assignment PDFs into a single submission file.

Key Features

Drag-and-drop reordering: Rearrange files and individual pages in any order before merging.
No file size limits: Merge large PDFs that other tools reject — no 25MB or 100MB upload caps.
Preserves formatting: Bookmarks, links, form fields, and page sizes are maintained in the merged output.
Batch merging: Drop 50 files at once. No one-at-a-time restrictions.

Privacy: All PDF processing happens locally in your browser using pdf-lib. Your documents never leave your device. No server, no cloud, no third-party access.

Three steps

How to use Combine PDFs.

Upload your file

Drag and drop or click to select your file.

Choose settings

Adjust quality, size, or format options.

Download result

Your processed file is ready instantly.

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Why CipherForces

Privacy-first tools that work everywhere.

100% Private

From $39

Works Offline

No Account

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About Combine PDFs.

Combine Multiple PDF Files Into One Document

Common Use Cases

Contracts and agreements: Combine a cover letter, terms, signature pages, and exhibits into one file for signing.
Reports and presentations: Merge individual chapter PDFs, appendices, and cover pages into a single deliverable.
Scanned documents: Join separately scanned pages into one continuous document — receipts, forms, ID copies.
Application packages: Combine a resume, cover letter, references, and portfolio into one PDF for job applications.
School assignments: Merge multiple assignment PDFs into a single submission file.

Key Features

Drag-and-drop reordering: Rearrange files and individual pages in any order before merging.
No file size limits: Merge large PDFs that other tools reject — no 25MB or 100MB upload caps.
Preserves formatting: Bookmarks, links, form fields, and page sizes are maintained in the merged output.
Batch merging: Drop 50 files at once. No one-at-a-time restrictions.

Privacy: All PDF processing happens locally in your browser using pdf-lib. Your documents never leave your device. No server, no cloud, no third-party access.