Estimated reading time at 200 wpm: 6 minutes
It is a common situation for litigants in person, or those assisting them, to face a mountain of loose documents that must be put into strict order for a court or tribunal. Merging files by hand, typing out an index, and numbering every single page takes hours of frustrating effort.
Whether or not you agree our Fat Disclaimer applies
But think – people who are not going to court may also need to organise bundles of electronic documents into a well-organised form. It could be an application for something or it could be a complaint to some organisation.
Commercial bundling software exists, but these services typically demand steep subscription fees. Free online PDF joiners carry a different risk, requiring the upload of private financial, medical, or family records to remote servers.
The process can be streamlined, completely private, and entirely free. A browser-based utility called BunTool solves this problem directly on the user’s computer.
Built by a practising UK lawyer, it acts like an automated digital lever-arch file. It takes a collection of separate PDF documents, divides them into labelled sections, numbers every page automatically, and produces an indexed master file ready for a judge or hearing. Because the entire process runs inside the web browser without uploading a single file to the internet, personal records remain entirely confidential.
1. Absolute Privacy Without Server Uploads
Local Processing in the Browser
When handling court papers, evidence almost always contains sensitive material: bank statements, medical letters, employment records, or correspondence involving children. Using generic “free online PDF joiners” introduces a quiet risk, as those platforms typically require uploading files to an external third-party server to be processed.
BunTool takes a fundamentally different path. Although it opens inside a standard web browser, all file handling happens strictly within the local memory of the computer. Documents are never transferred across a network, stored on a remote server, or viewed by anyone else. If an internet connection is disconnected immediately after loading the webpage, the software continues to read, assemble, and number the documents without interruption.
Zero Cost and No Account Required
Most commercial legal software is built for corporate practices and comes locked behind steep monthly fees, annual licences, or per-bundle charges. BunTool is entirely free and open to anyone. There are no registration forms, credit card prompts, or hidden usage caps. A litigant preparing a single small bundle receives the same functionality as someone compiling a complex, multi-section filing, without financial barriers standing in the way of proper preparation.
2. Key Features for Clear and Compliant Bundles
Automatic Page Numbering and Section Tabs
Courts and tribunals generally expect every page in a bundle to display clear, consecutive numbering so that participants can be directed to the same passage without confusion. Numbering loose pages manually or inserting stamps by hand is tedious and prone to error whenever a document is added or removed.
BunTool automates this layout. It allows documents to be grouped into distinct labelled sections—such as Statements, Correspondence, or Financial Exhibits—replicating the function of tabbed dividers in a physical lever-arch folder. Users can apply continuous page numbering right through the entire bundle or opt for section-specific pagination (such as A1, A2, B1, B2). The software stamps every page neatly in the footer, ensuring references remain clear and orderly throughout the proceedings.
Clickable Front Index and Instant Navigation
A large bundle is ineffective if the reader cannot locate evidence quickly. When the bundle is produced, BunTool builds a clean, automated table of contents right at the front.
Every entry in this front index—document titles, dates, and page numbers—functions as an active, clickable link. Clicking any row immediately jumps the screen straight to the relevant document. In addition, the tool writes an outline tree directly into the PDF bookmark sidebar. When opened in any standard PDF reader, this sidebar operates like physical plastic divider tabs, letting the court or the parties jump between sections with a single click.
Reopening and Updating Past Bundles
Legal proceedings rarely stay static. Further correspondence arrives, directions change, or supplemental witness statements must be inserted days before a hearing. Typically, adding a new document into an already assembled PDF means discarding earlier pagination and typing out a fresh index from scratch.
BunTool avoids this through a feature called “Load from bundle PDF”. When an existing bundle created by the tool is dragged back onto the page, the software reads its own embedded layout data. It instantly reconstructs the original project screen, restoring every section title, document order, and date. A new document can be slotted into place, and the tool will recalculate the entire index and renumber the pages in seconds.
3. Practical Limitations to Bear in Mind
PDF Format Constraints
BunTool works exclusively with PDF files. It does not accept direct uploads of Microsoft Word documents, Excel spreadsheets, email files, or raw image scans.
Before assembling a bundle, every item must first be converted into a standard PDF. In modern software, this requires only a few clicks: using the “Save As PDF” or “Print to PDF” command inside Word or an image viewer. Ensuring every document is already in PDF format before opening the tool avoids import errors and keeps the assembly process swift.
Browser Memory Limits on Large Files
Because all processing takes place entirely within the web browser rather than on a remote server, performance depends directly on the computer’s local memory.
For bundles consisting of dozens or even a few hundred pages, modern browsers handle the task effortlessly. However, exceptionally heavy bundles—such as those exceeding a thousand pages or containing dozens of high-resolution, uncompressed colour scans—can stretch browser memory limits. This may lead to sluggish page handling or cause the browser tab to crash. Keeping scanned files at a reasonable resolution (around 300 DPI in black and white or greyscale) ensures the browser compiles the master document smoothly.
4. Final Verdict: A Dependable Utility for Self-Representation
Presenting a clear, well-organised case should not depend on whether a person can afford enterprise legal software. When facing formal court or tribunal deadlines, the administrative burden of sorting, numbering, and indexing evidence can easily distract from the substance of the case itself.
BunTool bridges that gap effectively. By providing an entirely free, private, and automated way to assemble professional bundles within any web browser, it removes a significant logistical hurdle for litigants in person and non-profit advisers. For anyone needing to convert a disordered collection of electronic documents into a clean, court-ready master file without spending money or compromising confidentiality, it is an indispensable utility.
