Combine files before sending
Use Merge PDF to put reports, invoices, or application documents into one file. Arrange the uploads first; the final PDF follows that order.
Merge PDFs →Free PDF tools, no account required
Practical tools for everyday PDF tasks
Merge, split, compress, convert, or annotate a PDF in your browser. Choose a tool below to see what it does, how to use it, and what to expect from the result.
Each email address can process up to 25 operations per calendar year. Review the privacy policy before uploading sensitive documents.
Choose a PDF tool
Merge PDF
Combine multiple PDFs into one document
Split PDF
Separate pages into individual PDF files
Compress PDF
Reduce PDF file size while maintaining quality
Rotate PDF
Rotate pages to the correct orientation
PDF to Word
Convert PDF to editable Word document
Word to PDF
Convert Word document to PDF
PDF to JPG
Convert PDF pages to JPG images
JPG to PDF
Convert images to a PDF document
PDF to Excel
Extract tables from PDF to Excel spreadsheet
Edit PDF
Add text, draw, highlight and annotate PDFs
PDF to PNG
Convert PDF pages to PNG images
Watermark PDF
Add a text watermark to every page
Add Page Numbers
Stamp page numbers on every page
Protect PDF
Add a password to your PDF
Unlock PDF
Remove password from a PDF
Common PDF tasks
Pick a workflow based on what you need to do next. Each tool page includes step-by-step instructions, limitations, and answers to common questions.
Share only the pages someone needs
Split PDF creates a ZIP containing one PDF per page. To make a smaller document from selected pages, split the file and merge the pages you want.
Split a PDF →Make a large document easier to send
Compress PDF reduces file size. Check the output before sending, especially when small text or detailed images need to remain clear.
Compress a PDF →Before you upload a document
The tools send files to our server for processing. Read the privacy policy for details about file handling, usage records, analytics, and advertising, and decide whether the service suits your document.
Conversion results depend on the source file. Scanned pages may behave like images rather than selectable text, and complex layouts can shift when converted to Word or spreadsheets. Open the downloaded file and check important formatting before relying on it.
The service is free for up to 25 operations per email address per calendar year. Visit About PDF Ninjas to learn about the service and its operator, or contact us with a question or a problem.
File handling
Read the privacy policy for how uploads and usage records are handled before choosing a tool.
Clear usage limit
The free allowance is 25 operations per email address per calendar year. Tool pages explain the steps for each task.
Need help?
Send questions, bug reports, and feedback to hello@pdfninjas.com.
Frequently asked questions
Do I need to create an account to use PDF Ninjas?▾
No account is required. You simply enter your email address before downloading a processed file. We use your email only to count your free operations — we do not send marketing emails and do not require a password.
How many PDF operations can I do for free?▾
Each email address gets 25 free PDF operations per calendar year. The counter resets on January 1st each year. One operation is one file processed — so merging five PDFs into one counts as one operation, not five.
Are my uploaded files stored or shared?▾
No. Files are processed in server memory and deleted immediately after you download the result. They are never written to disk, never shared with third parties, and never used for any purpose other than completing your request. See the privacy policy for full details.
What PDF tools does PDF Ninjas offer?▾
PDF Ninjas offers 15 tools: Merge PDF, Split PDF, Compress PDF, Rotate PDF, PDF to Word, Word to PDF, PDF to JPG, JPG to PDF, PDF to Excel, PDF to PNG, Edit PDF, Add Watermark, Add Page Numbers, Protect PDF, and Unlock PDF. All 15 are completely free.
Does PDF Ninjas work on mobile and Mac?▾
Yes — PDF Ninjas is a web application that works on any device with a modern browser: Windows, Mac, iPhone, Android, and Chromebook. No software installation is needed. The PDF editor works best on desktop due to the freehand drawing tools.
What file size limits apply?▾
There is no strict file size limit. Very large files (over 100 MB) may take longer to process. If you are trying to email a large file, use the Compress PDF tool first to reduce the file size before attaching it.
Is PDF Ninjas really free — no hidden charges?▾
Yes, completely free. There is no premium tier, no subscription, and no charge for any of the 15 tools. The service is supported by Google AdSense advertisements shown on the download screen. The 25-operations-per-year limit exists to cover server costs sustainably.
Who operates PDF Ninjas?▾
PDF Ninjas is operated by Tiamata Digital, a small software team based in Auckland, New Zealand. You can reach us at hello@pdfninjas.com. Visit the About page to learn more about the service.
PDF guides and tips
4 min read
How to Merge PDF Files for Free (No Signup Required)
Step-by-step guide to combining multiple PDF files into one — completely free, no account needed, and no file size limits to get started.
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Is It Safe to Compress a PDF Online? What Actually Happens to Your File
Uploading sensitive documents to online PDF tools raises legitimate privacy questions. Here's exactly what happens to your file when you compress it online — and what to look for.
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Best Free PDF Tools With No Signup in 2026 (Honest Comparison)
A frank comparison of the best free online PDF tools — what each one is good for, where they add friction, and which to use when you just need something done quickly.
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How to Convert PDF to Word Without Losing Formatting
PDF-to-Word conversion often manges fonts, layouts, and tables. Here's why it happens and how to get the cleanest possible result.
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How to Compress a PDF Without Losing Quality
Large PDFs can be slow to email and upload. Here's how to reduce PDF file size while keeping text sharp and images acceptable.
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PDF Ninjas vs iLovePDF: Which Free PDF Tool Should You Use?
An honest, side-by-side comparison of PDF Ninjas and iLovePDF — limits, privacy, tool selection, and which is the better choice depending on your needs.