InstantFileTools
InstantFileTools is our flagship product: 46+ document and image utilities that run entirely inside your browser. Every operation — merging PDFs, converting documents, removing image backgrounds, generating invoices — happens on your device. The server hosting the product has no API endpoint that accepts file content. There is nothing to leak because nothing is ever uploaded.
The tools
The suite spans four categories:
- PDF tools. merge, compress, unlock, redact, compare, fillable forms, plus full conversion between PDF, Word, Excel, PowerPoint, and images.
- Image tools. AI background removal, compression, resize, HEIC conversion.
- Creation. invoices, resumes, certificates, QR codes, photo albums, ebooks.
- Data. CSV editor, merge CSV, JSON ↔ CSV, data anonymization.
How it works
Every tool uses open-source JavaScript libraries — pdf-lib, PDF.js, mammoth, xlsx, the HuggingFace transformers runtime — running inside a Web Worker on your device. The page bundle is the entire application. Once it loads, you can disable your network connection and the tools still work.
Stack
- Vanilla JavaScript + Vite
- pdf-lib, PDF.js, mammoth, xlsx
- @imgly/background-removal (WASM) for AI background removal
- Plausible Analytics (cookieless)
- Vercel for static hosting
Read the research
We publish editorial on why this model matters: why client-side PDF tools matter, the HIPAA reality check, and the real cost of uploading your PDF.