PDF & Documents
PDF Toolkit
Every time you merge a PDF online, you upload sensitive contracts, tax documents, or medical records to someone else's server. Smallpdf limits you to 2 tasks per day on the free plan. ILovePDF requires an account for large files. OpenToolLab's PDF toolkit gives you every operation — merge, split, compress, rotate, password-protect, and more — entirely in your browser. Your files never leave your device.
Drag & drop PDF files or
No files loaded
Files will be merged in the order shown below. Drag to reorder.
What makes this tool different
Merge multiple PDFs
Combine multiple PDF files into one. Drag to reorder before merging. Handles any number of files.
Split by page range
Extract specific pages from a PDF. Enter ranges like 1-5, 8, 10-12 to get exactly the pages you need.
Compress PDF size
Reduce PDF file size by stripping metadata, downsample images, and remove unused objects. Choose compression level.
Rotate pages
Rotate individual pages or all pages by 90°, 180°, or 270°. Fix scanned documents with wrong orientation.
Password protect
Encrypt PDFs with a password using AES-256 encryption. Your password never leaves your browser.
View & strip metadata
View PDF metadata (author, title, creation date) and optionally strip all metadata for privacy.
Page preview
Preview page thumbnails before performing any operation. Verify the right pages are selected.
100% client-side
All processing happens in your browser using pdf-lib and pdf.js. Zero server uploads.
About this tool
PDF Toolkit: everything you need to know
PDF is the universal document format — contracts, tax forms, medical records, research papers, and invoices all arrive as PDFs. But PDF manipulation has always required either expensive software or risky online services. Every time you upload a PDF to a free online tool, that document — which may contain Social Security numbers, financial data, or confidential business information — sits on someone else's server.
OpenToolLab's free PDF toolkit eliminates that risk entirely. Every operation — merge, split, compress, rotate, password-protect, and metadata management — runs in your browser using pdf-lib and pdf.js. Your PDF files never leave your device. There is no server processing, no account creation, and no daily task limits. The tool works offline after the first load.
Merge multiple PDFs into a single document by dragging files onto the tool and arranging them in the desired order. The merge operation preserves bookmarks, annotations, and internal links. Split PDFs by entering page ranges — extract specific chapters, separate signed pages, or break a large document into smaller files. The split operation creates clean, optimized PDFs with only the pages you selected.
Compress PDFs to reduce file size for email, web, or storage. The compression engine strips unnecessary metadata, removes duplicate objects, and optionally downsamples images. Choose between three compression levels: Low (minimal size reduction, maximum quality), Medium (balanced), and High (maximum compression, suitable for email). Password-protect sensitive documents with AES-256 encryption — the strongest standard available — processed entirely in your browser.
Rotate pages that scanned sideways or upside down. View PDF metadata to check author, creation date, and software used, then strip all metadata for privacy before sharing. The page preview shows thumbnails of every page so you can verify content before performing any operation.
Common use cases include merging signed contracts into a single file, splitting a large PDF into chapter-based files, compressing scanned documents for email, password-protecting financial statements, rotating incorrectly scanned pages, and stripping metadata before publishing. The toolkit handles all of these without requiring Adobe Acrobat, Python, or any technical knowledge.
FAQ
PDF Toolkit — frequently asked questions
What is a PDF toolkit?
A PDF toolkit is a collection of tools for working with PDF files — merging, splitting, compressing, rotating, and protecting them. OpenToolLab's toolkit runs entirely in your browser, so your files never leave your device.
How do I merge PDF files without uploading?
Open OpenToolLab's PDF Toolkit, drag your PDF files onto the tool, arrange them in the order you want, and click Merge. The combined PDF downloads instantly — no server upload.
How do I split a PDF into separate files?
Click Split, enter the page ranges you want (e.g., 1-3, 5, 8-10), and click Extract. Each range becomes a separate downloadable PDF.
How do I compress a PDF in my browser?
Click Compress, choose a compression level (low, medium, high), and the tool reduces file size by stripping metadata and optimizing objects. The compressed PDF downloads automatically.
Can I merge password-protected PDFs?
Yes, if you know the password. The tool will prompt you for the password when loading encrypted PDFs, then merge or split them normally.
How do I remove metadata from a PDF?
Click View Metadata to see the current metadata, then click Strip Metadata to remove all author, title, subject, and creator information from the PDF.
How do I rotate PDF pages?
Click Rotate, select the pages or page range to rotate, choose the rotation angle (90°, 180°, or 270°), and click Apply.
Is my PDF data uploaded to a server?
No. All processing happens locally in your browser using pdf-lib and pdf.js. Your PDF files never leave your device. Open the DevTools Network tab to verify — zero outgoing requests.
What is the maximum file size?
There is no hard limit. The tool uses streaming PDF parsing, so it handles files hundreds of MB in size. Performance depends on your device's memory.
Can I merge more than 10 PDFs at once?
Yes. There is no limit on the number of files you can merge. Drag as many PDFs as you need onto the tool.
How do I password-protect a PDF?
Click Protect, enter a password, and the tool encrypts the PDF using AES-256. The password is processed in your browser and never transmitted.
Does it work offline?
Yes. After the first load, the PDF toolkit works offline. All processing happens locally — no internet connection needed.
How do I compress a PDF for email?
Click Compress and choose the High compression level. This reduces file size significantly while maintaining readability, making it suitable for email attachments.
Can I preview PDF pages before merging?
Yes. The tool shows page thumbnails for each loaded PDF so you can verify the content and page order before merging or splitting.
What browsers are supported?
All modern browsers — Chrome, Firefox, Safari, Edge — on desktop and mobile. The tool uses standard Web APIs with no plugins required.
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