Free online PDF tools that respect your privacy
Merge, split, compress, rotate, protect and convert PDFs — all in your browser. No uploads, no watermarks, no account required.
Every online PDF tool you need
Fast, secure and remarkably easy to use — right in your browser.
Merge PDF
Combine multiple PDF files into one organized document in seconds.
Split PDF
Extract specific pages or break a large file into smaller parts.
Compress PDF
Shrink file size for easier sharing while keeping high visual quality.
Rotate PDF
Fix orientation by rotating pages clockwise or counter-clockwise.
Protect PDF
Add strong password protection to keep your sensitive PDFs safe.
PDF to JPG
Convert each PDF page into a high-resolution JPG image.
JPG to PDF
Turn a batch of JPG or PNG images into a single PDF document.
Word to PDF
Convert Word documents into clean, shareable PDFs.
Private by design
Files are processed locally in your browser. Nothing is uploaded to any server.
Lightning fast
Powered by modern web tech, our tools work in seconds — even on large PDFs.
No account needed
Use every tool for free. No sign-up, no watermarks, no hidden limits.
Built for the way real people work with PDFs
From contract review to expense reports, NinjaPDF fits naturally into the document workflows you already have.
Business & legal
Combine signed contracts, redact sensitive pages and shrink attachments before they hit a mail server.
Students & researchers
Merge lecture notes, split textbook chapters, and turn slides into images for study guides.
Teams & operations
Bundle invoices for accounting, prepare onboarding packs and standardize client deliverables.
Anyone, anywhere
Works offline once loaded. No subscription, no upload limits, no regional restrictions.
How NinjaPDF compares to other online PDF tools
If you’ve used iLovePDF, Smallpdf or FreePdfConvert, here’s what changes when you switch to NinjaPDF.
| Feature | NinjaPDF | Typical online PDF site |
|---|---|---|
| Files uploaded to a server | No — runs in your browser | Yes — uploaded and queued |
| Daily / hourly limits | Unlimited | 2–5 free tasks per hour |
| Watermarks on output | Never | Often, on free tier |
| Account required | No | Often required for full features |
| Works offline once loaded | Yes | No — needs server |
| Privacy of sensitive PDFs | Stays on device | Stored temporarily on servers |
The online PDF toolkit built for everyday work
NinjaPDF brings together the PDF tasks you actually do every week — merging contracts, splitting reports, compressing attachments before they bounce off a mail server, rotating phone scans, and turning images into a single shareable document. Every tool is built to do one job remarkably well, with no clutter and no upsell.
Unlike upload-based PDF converters, NinjaPDF processes your files entirely in your browser using WebAssembly. Your documents are never uploaded, transmitted or stored on a server, which makes NinjaPDF a privacy-friendly alternative to iLovePDF, Smallpdf and FreePdfConvert for everyday document work.
Built for privacy, speed and zero friction
- No file uploads — everything runs in your browser
- No watermark on any output
- No account required to use any tool
- Works on Windows, macOS, Linux, iOS and Android
- Free for unlimited everyday use
- Open standards: standard PDF, JPG and PNG outputs
Frequently asked questions
Is NinjaPDF really free?+
Yes. Every tool is free with no daily limits, no watermarks and no account required. Optional Pro and Team plans add batch processing, history and team features.
Do you upload my PDFs to your servers?+
No. All processing runs locally in your browser using WebAssembly. Your files never leave your device, which makes NinjaPDF faster and more private than upload-based alternatives.
Which PDF tools do you offer?+
Merge, Split, Compress, Rotate, Protect, PDF to JPG, JPG to PDF, and Word to PDF (coming soon). All tools work on Windows, macOS, Linux, iOS and Android.
Do I need to install anything?+
No. NinjaPDF runs entirely in your web browser — there’s nothing to install or update. Open the page and you’re ready to go.
Is there a file size limit?+
Because everything runs in your browser, the only limit is your device’s available memory. Most modern laptops handle PDFs of several hundred megabytes without issue.
Does NinjaPDF work on mobile?+
Yes. NinjaPDF works in any modern mobile browser on iOS and Android — handy for quickly merging or compressing a PDF on the go.
How is NinjaPDF different from iLovePDF, Smallpdf or FreePdfConvert?+
Most online PDF tools upload your file to their servers, queue it for processing and add daily limits or watermarks. NinjaPDF processes everything in your browser, so it’s faster, fully private and unlimited.