PDF Merge & Split
Combine multiple PDFs into a single file or split pages into individual PDFs in your browser. Privacy guaranteed.
Drag & drop PDF files here
or click to browse from your computer (select multiple PDFs)
Merging and Splitting PDFs Safely in Your Browser
Manage your digital paperwork securely with LensText's comprehensive suite of PDF utilities. Whether you need to combine multiple monthly invoices into a single cohesive report, or extract a specific chapter from a massive e-book, our browser-based tools provide enterprise-level functionality without the enterprise price tag. The PDF format is the global standard for business and legal documentation, meaning these files often contain highly sensitive personal information, financial data, and proprietary secrets. Uploading unencrypted PDFs to random cloud services poses a massive cybersecurity risk. LensText solves this by executing all PDF manipulations—merging, splitting, and thumbnail rendering—entirely within your local web browser. By leveraging optimized WebAssembly libraries, we guarantee that your confidential documents never cross the internet, ensuring absolute privacy and compliance with strict data security standards.
How to Use
- To Merge: Click the 'Merge PDFs' tab. Drag and drop multiple PDF files into the upload zone. Use the grip handles to visually reorder the documents to your exact specifications. Click 'Merge PDF' to instantly generate and download the combined file.
- To Split: Click the 'Split PDF' tab and upload your target document. Once the page thumbnails render, choose your split mode. You can extract every single page, split the document into fixed intervals (e.g., every 3 pages), or define custom ranges using our interactive selection tool.
- Extract via Bookmarks: If your uploaded PDF contains an embedded Table of Contents or chapter markers, select the 'Extract by Bookmark' mode. LensText will automatically read the document's metadata and allow you to split the PDF perfectly along its intended chapter boundaries.
- Package and Download: When splitting a document into multiple files, LensText automatically packages the resulting PDFs into a single, organized ZIP archive, making it easy to download and store your new files.
Key Features & Benefits
- Zero Trust Security: Your legal contracts, tax returns, and medical records are processed entirely in your computer's RAM. We never see your data, we don't store your files, and we don't use your documents to train AI.
- Intelligent Bookmark Parsing: Unlike basic splitters that only work with raw page numbers, our tool actively reads the PDF's internal outline, allowing you to split textbooks or manuals logically by chapter or section.
- Visual Interactive Interface: Don't guess which pages you need. Our integrated PDF renderer generates high-quality thumbnails for every page, allowing you to visually select exactly what to extract or omit.
- Instant Edge Processing: By avoiding the slow process of uploading gigabytes of PDF data to a remote server and waiting in a processing queue, our local WebAssembly engine merges and splits documents almost instantly.
Frequently Asked Questions
Is there a limit to how many pages I can merge or split?
Because LensText relies on your local device's hardware, the only limit is your available RAM. Most modern laptops and smartphones can easily handle merging or splitting documents containing hundreds, or even thousands, of pages without crashing.
Does merging PDFs reduce the quality of the text or images?
No. Our tool does not rasterize or flatten the document. It stitches together the raw, underlying binary data streams of the PDFs. This means that 100% of the original text crispness, vector graphics, and image quality is preserved in the final merged file.
Can I extract specific pages and merge them back together?
Yes! Use the 'Split PDF' tab, switch to 'Custom Range' mode, select the specific pages you want using the visual thumbnails, and click the 'Export Selected as Single Merged PDF' button.
Are my interactive forms and hyperlinks preserved?
In most cases, standard hyperlinks and bookmarks are preserved during the merge process. However, highly complex interactive forms (like XFA forms) may lose some interactivity when merged with other documents.