PDFMiniFly is built on an uncompromising principle: your files belong to you, and your browser is powerful enough to handle them without uploading them to remote servers.
Why We Built PDFMiniFly
For years, performing basic operations like combining two PDFs, rotating a sideways scan, or removing page 4 meant uploading confidential contracts, tax returns, and identity documents to random third-party websites. Many of these sites require subscriptions, bombard users with intrusive ads, or retain user files on remote servers.
With modern WebAssembly and HTML5 capabilities, browser engines can process documents in milliseconds. PDFMiniFly provides a suite of PDF utilities that look, feel, and perform like a premium desktop app—free of charge, without forced accounts or hidden fees.
Under the Hood: Local-First Engineering
pdf-lib Engine
Direct binary manipulation of PDF structures. Enables splitting, merging, rotating, watermarking, and signature embedding with pristine mathematical precision.
PDF.js by Mozilla
High-fidelity rendering of PDF pages into HTML5 Canvas. Generates sharp thumbnails and enables visual drag-and-drop page organization.
Tesseract.js OCR
Neural optical character recognition running via WebAssembly inside a background Web Worker, extracting text from scans without cloud AI APIs.
PWA & Offline Worker
Configured with service worker caching so you can install PDFMiniFly on iPhone, Android, Mac, or Windows and use supported tools offline anywhere.
Supported File Formats
Frequently Asked Questions
Are my files uploaded to any servers?
No. Zero bytes of your documents are ever transmitted to any remote servers or APIs for local tools. All computation executes locally inside your web browser.
Is there any file size limit?
Because files are processed on your device, the main limit is your device’s available RAM. Modern devices can easily process files exceeding 100MB without issue.
Is PDFMiniFly free to use?
Yes, 100% free with no account required, no subscription paywalls, and no watermarks placed on your exported files.
Questions or Suggestions?
We are dedicated to building the cleanest, most private PDF experience on the web.
support@pdfminifly.local