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PDF Forge

Complete PDF toolkit with 31 tools -- merge, split, compress, convert, sign, watermark, and more

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PDF Forge

Table of Contents

  1. Overview
  2. Key Features
  3. How to Use
  4. Frequently Asked Questions
  5. Privacy & Security

Overview

PDF Forge is a comprehensive PDF toolkit that packs 31 professional-grade tools into a single browser-based application. Organized across seven categories -- Organize, Optimize, Convert To PDF, Convert From PDF, Edit, Security, and Intelligence -- it covers every PDF workflow you are likely to encounter, from merging multiple documents into one file to redacting sensitive information before sharing. Every operation runs entirely in your browser using client-side JavaScript libraries including pdf-lib, pdf.js, jsPDF, html2canvas, XLSX, JSZip, and Tesseract.js, so your documents never leave your device.

Unlike cloud-based PDF services that upload your files to remote servers for processing, PDF Forge keeps everything local. Whether you are compressing a 50MB contract for email, signing an invoice with a drawn or typed signature, adding tiled watermarks to a confidential report, or extracting text from a scanned receipt using OCR, your data stays on your machine from start to finish. There is no file size cap imposed by a server, no daily usage limit, and no account required.

PDF Forge is designed for professionals, students, and anyone who handles PDF documents regularly. Its category-based navigation makes it easy to find the right tool quickly, while advanced features like pixel-level document comparison, batch page extraction, and multi-format conversion (Word, Excel, PowerPoint, HTML, JPG, and PDF/A) ensure that even specialized workflows are fully supported without installing desktop software or paying for a subscription.

Key Features

31 Tools in 7 Categories

Organize, Optimize, Convert To, Convert From, Edit, Security, and Intelligence categories cover every PDF task. Navigate quickly with a category-based interface that groups related tools together.

Merge & Split

Combine multiple PDFs into a single document with drag-and-drop reordering, or split a large PDF by page ranges, individual pages, or fixed intervals. Extract or remove specific pages in bulk.

Compress & Optimize

Reduce PDF file size for email or web sharing with adjustable quality levels. Repair corrupted PDFs and run OCR on scanned documents to make text searchable and selectable using Tesseract.js.

Multi-Format Conversion

Convert to PDF from JPG, Word, PowerPoint, Excel, and HTML. Convert from PDF to JPG images, Word documents, PowerPoint slides, Excel spreadsheets, and archival PDF/A format.

Dual Signature Mode

Sign PDFs with a drawn signature using mouse or touch input, or type your name and choose from multiple signature fonts. Position and resize your signature precisely on any page of the document.

Tiled Watermarks

Apply text or image watermarks across every page with tiled repeat patterns, adjustable opacity, rotation, font size, and color. Protect confidential documents from unauthorized redistribution.

Security & Redaction

Password-protect PDFs with encryption, unlock password-protected files, permanently redact sensitive text and areas, and compare two PDF versions side-by-side with pixel-level difference highlighting.

Edit & Organize Pages

Rotate pages individually or in bulk, add page numbers with customizable position and format, crop pages to remove margins, and rearrange pages with a visual drag-and-drop organizer.

How to Use

  1. Open PDF Forge - Launch the app in your browser. No installation, account creation, or plugin is required. The tool loads instantly and all 31 tools are available immediately from the main dashboard.
  2. Choose a Category - Select from the seven category tabs at the top: Organize, Optimize, Convert To, Convert From, Edit, Security, or Intelligence. Each category groups related tools together so you can find the right one quickly.
  3. Select Your Tool - Click on the specific tool you need, such as Merge, Split, Compress, Sign, Watermark, or any of the 31 available options. Each tool opens with a clean, focused interface for that specific task.
  4. Upload Your Files - Drag and drop your PDF files onto the upload area, or click to browse and select files from your device. For conversion tools, upload the source format (e.g., JPG images for JPG-to-PDF or a Word document for Word-to-PDF). All files stay in your browser memory.
  5. Configure Options - Adjust settings specific to the tool you selected. For example, set compression quality, choose page ranges for splitting, position your signature, set watermark text and opacity, or select the output format for conversions.
  6. Process and Download - Click the action button to process your document. The operation runs entirely in your browser using JavaScript. Once complete, your processed PDF downloads automatically or is ready for manual download with a single click.
  7. Combine Multiple Operations - Return to the dashboard to run additional tools on the same document. For example, merge several PDFs, then compress the result, add a watermark, and finally password-protect it -- all without your files ever leaving your device.

Frequently Asked Questions

What is PDF Forge?
PDF Forge is a free, browser-based PDF toolkit with 31 tools organized into 7 categories: Organize (merge, split, extract, remove, organize, scan to PDF), Optimize (compress, repair, OCR), Convert To PDF (JPG, Word, PowerPoint, Excel, HTML), Convert From PDF (JPG, Word, PowerPoint, Excel, PDF/A), Edit (rotate, page numbers, watermark, crop, edit), Security (unlock, protect, sign, redact, compare), and Intelligence (translate). All processing happens client-side in your browser.
Are my PDF files uploaded to a server?
No. PDF Forge processes every file entirely in your browser using client-side JavaScript libraries. Your documents are loaded into your browser's memory, processed locally, and the output is generated on your device. No file data is ever transmitted to any server. This makes PDF Forge safe for confidential contracts, financial statements, medical records, and any other sensitive documents.
Is there a file size limit?
There is no artificial file size limit. Since processing happens in your browser, the practical limit depends on your device's available memory (RAM). Most modern devices handle PDFs up to 100MB without issues. For very large files (over 200MB), performance may vary depending on your hardware. If you encounter slowness, try closing other browser tabs to free up memory.
What file formats can I convert to and from PDF?
PDF Forge supports conversion in both directions. Convert to PDF from: JPG/JPEG images, Microsoft Word (.docx), PowerPoint (.pptx), Excel (.xlsx), and HTML pages. Convert from PDF to: JPG images, Word documents, PowerPoint presentations, Excel spreadsheets, and archival PDF/A format. Each conversion preserves formatting and layout as closely as possible using libraries like jsPDF, html2canvas, and XLSX.
How does the signature feature work?
PDF Forge offers dual signature mode. You can draw your signature freehand using a mouse, trackpad, or touchscreen, or you can type your name and select from multiple signature-style fonts. Once created, position the signature anywhere on any page of your PDF, resize it as needed, and apply it. The signed document is generated as a new PDF. Your signature data is not stored or transmitted anywhere.
Can I merge PDFs in a specific order?
Yes. After uploading multiple PDF files, you can drag and drop them into your desired order before merging. The merge tool provides a visual list of all uploaded files with handles for reordering. You can also remove individual files from the merge list before processing. The final merged PDF preserves the exact page order you specify.
How does the OCR feature work?
The OCR (Optical Character Recognition) tool uses Tesseract.js, a JavaScript port of the Tesseract OCR engine, to extract text from scanned PDF pages. It converts each page to an image, runs text recognition locally in your browser, and produces a searchable PDF where the recognized text is overlaid on the original scanned image. This allows you to select, copy, and search text in previously non-searchable scanned documents.
What does the Compare tool do?
The Compare tool renders two PDF versions side by side and performs pixel-level difference detection. Areas where the documents differ are highlighted visually, making it easy to spot changes between contract revisions, design iterations, or document versions. Both PDFs are rendered to images using pdf.js, and the comparison is computed entirely in your browser without uploading either file.
Does PDF Forge work offline?
After the initial page load, most PDF Forge tools work without an active internet connection because the JavaScript libraries (pdf-lib, pdf.js, jsPDF, Tesseract.js) are loaded with the page. However, the OCR tool may need to download language data on first use, and the Translate feature requires connectivity. For best offline performance, use the tool once while online so all resources are cached by your browser.
Can I use PDF Forge on my phone or tablet?
Yes. PDF Forge is fully responsive and works on iOS Safari, Android Chrome, and all major mobile browsers. The interface adapts to smaller screens with touch-friendly controls. The signature drawing feature works well with finger or stylus input on touchscreens. For best performance on mobile, work with smaller files as phones have less available memory than desktop computers.

Privacy & Security

Your Documents Never Leave Your Device

PDF Forge is built on the zero-data-upload principle. Every PDF operation -- merging, splitting, compressing, converting, signing, watermarking, redacting, and comparing -- runs entirely in your browser using client-side JavaScript. Your files are loaded into browser memory, processed locally by libraries like pdf-lib and pdf.js, and the output is generated on your device. No document data is ever sent to any server, stored in any cloud, or accessible to anyone other than you. There are no usage logs, no file analytics, and no temporary server copies. You retain complete control over your data at all times.

This architecture makes PDF Forge safe for handling confidential business contracts, legal agreements, financial reports, medical records, and personal identification documents. Since files never leave your device, there is zero risk of data interception during upload, server-side data breaches, or unauthorized third-party access. Your documents exist only in your browser's memory and are released when you close the tab.

PDF Forge is fully compliant with GDPR, CCPA, and DPDPA privacy regulations. The service is supported by ethical advertising partnerships, allowing all 31 tools to remain completely free with no premium tiers, usage limits, or hidden costs.

Ready to try PDF Forge? It's free, private, and runs entirely in your browser.

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Milan Salvi

Milan Salvi

Founder, Leena Software Solutions

Milan is the founder of ZeroDataUpload and Leena Software Solutions, building privacy-first browser tools that process everything client-side. View all articles ยท About the author.

Last Updated: March 26, 2026