Secure PDF — Password-Protect & Unlock PDF in Your Browser

No file upload. Your files never leave your device.

Add or remove PDF passwords and print/copy restrictions with AES-256 encryption — plus compress, merge, split and convert, all processed locally.

100% Private 100% Free No Watermark No Sign-up Required

Protect PDF

Add a password and restrict what others can do with your document.

AES-256 encryption · open password · block printing, copying, editing

Unlock PDF

Remove printing, copying and editing restrictions from your own PDFs.

Removes permission limits · needs the open password if the file has one

Compress PDF

Shrink image-heavy PDFs by re-compressing the embedded photos.

Whole-page photos often drop 50–80%

Merge PDF

Combine multiple PDFs into one. Reorder them before merging.

Add files one at a time · reorder with the arrows

Split PDF

Extract specific pages from a PDF into a new document.

Ranges like 1-3, 5, 8-10

Image to PDF

Turn images into a clean, print-ready A4 PDF document.

JPG, PNG, WebP, GIF, BMP · EXIF rotation applied

How It Works

Three steps, every tool. No data is sent to our servers at any step.

Select PDF

Drag and drop, or click to choose your file. It is loaded into your browser's memory only — it is never sent to a server.

Process Locally

Set a password, remove protection, compress or convert. Every calculation runs on your own device with no network upload.

Download Output

Your processed PDF downloads in seconds. No watermark, no sign-up, no email required.

Everything happens in your browser — your documents never touch our servers.

Why SecurePDFNow

You are handling sensitive documents. That is exactly why nothing leaves your device.

100% Client-Side Processing

Files are processed entirely inside your browser and are never uploaded to a server. We cannot read your documents — not because we promise not to, but because they never reach us.

Instant Speed

No upload and download wait. Encryption, unlocking and conversion happen immediately on your own machine.

Completely Free

No hidden fees, no paywalls, no credit card. Every tool is free to use.

No Account, No Email

No sign-up, no email address, no marketing list. Open the page and start working.

No Watermarks

Output files are clean. We never stamp a logo or watermark onto your PDF.

Cross-Device Support

Works on desktop, tablet and phone in Chrome, Firefox, Safari and Edge. Use a recent browser version for best results.

Frequently Asked Questions

Guides

Longer explanations for the questions people ask most.

How to password-protect a PDF

What AES-256 actually protects, the difference between an open password and permission restrictions, and how not to lock yourself out.

How to remove a PDF password

Why some locked PDFs open without a password and others never will — and what to do in each situation.

Why uploading a PDF is a privacy risk

What “upload, process, delete” really means for a contract or an ID scan, and how local processing is different.

How to compress a PDF

Why some PDFs shrink by 90% and others barely move, what a scanned document gives up when you squeeze it, and how to pick a quality level.

PDF too large to email

Finding the real limit, shrinking the file without wrecking it, and when a link beats an attachment.

Unlock a PDF for editing or printing

Three different blockers, three different fixes — and why unlocking never makes a scan editable.

Owner password vs user password

Two passwords, two very different jobs — and why a permission restriction is not confidentiality.

PDF tools that work offline

Three meanings of offline — and the one that actually decides whether your file leaves your device.

PDF tools without Adobe

The six jobs people open Acrobat for, what your browser already does — and what still needs real software.

How to compress a PDF to a specific size

Hitting a target size like 500 KB or 1 MB: what each limit costs, why text PDFs barely move, and when to send a link instead.

How to merge PDF files

Combining several documents in the order you choose — and what happens to bookmarks, form fields and mixed page sizes when you do.

How to split a PDF

Lifting out a page range (1-3, 5, 8-10) versus cutting a file into equal chunks, how the output files are named, and why splitting is not compression.

How to convert images to PDF

Turning photos, screenshots and scans into one PDF: when to use JPG rather than PNG, and why an iPhone HEIC photo needs converting first.

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Protect PDF

Add a password and restrict printing, copying or editing. Encryption uses AES-256 and runs entirely on your device.

Your password stays in this browser tab. It is never uploaded, never logged, and disappears when you close the page.

Choose your PDF

Select file or drag & drop it here · up to 100MB

What others are allowed to do

Uncheck anything you want to forbid. Restrictions are enforced by PDF readers.

Defaults to the open password. Set a different one if you want others to open the file but not be able to change its restrictions.

⚠ Store this password safely. If you lose it there is no recovery — nobody, including us, can open the file or remove the password for you.

Processing...

✓ Protected

↓ Download protected PDF
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Unlock PDF

Remove printing, copying and editing restrictions from a PDF. If the file also needs a password to open, you must know it.

Only process PDFs you own or have explicit permission to modify. This tool does not crack or guess passwords.

Choose your PDF

Select file or drag & drop it here · up to 100MB
Processing...

✓ Unlocked

↓ Download unlocked PDF
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Compress PDF

Reduce your PDF file size by re-compressing the images inside it. Everything happens in your browser.

Best results on scanned documents and photo-heavy PDFs. Text-only PDFs are usually already as small as they get.

Choose your PDF

Select file or drag & drop it here · up to 100MB

Compression strength

Strong downsizes images to 1600px and re-encodes at lower quality; Light keeps up to 3000px. Images are never enlarged.

Processing...

✓ Done

↓ Download
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Merge PDF

Combine multiple PDF files into one. Add files one at a time, reorder them, remove any you don't want.

Choose your PDFs

Select files or drag & drop them here · you can add more afterwards
Processing...

✓ Done

↓ Download
← Back to all tools

Split PDF

Extract specific pages from a PDF file into a new document.

Choose your PDF

Select file or drag & drop it here · then pick the pages

Use commas for single pages and hyphens for ranges. Example: 1-3, 5, 8-10

Processing...

✓ Done

↓ Download
← Back to all tools

Image to PDF

Convert images into a single print-ready A4 PDF document. Photos are auto-rotated using their EXIF data.

JPG, PNG, WebP, GIF and BMP work in every modern browser. iPhone HEIC photos work in Safari only.

Choose your images

Select images or drag & drop them here · up to 50 images
Processing...

✓ Done

↓ Download