PDFIXOIn-Memory Ready
PDFIXOAdd your signature to any PDF document securely
PDF Document
Signature Image (PNG/JPG)
Upload the document you want to sign
Upload a PNG/JPG of your signature (transparent PNG works best)
Get your signed document instantly
The PDFixo eSign tool allows you to securely stamp an image of your signature onto your PDF documents. It works entirely in memory, meaning your highly sensitive legal or financial documents are never saved to any database.
Upload the PDF document you want to sign.
Upload an image (PNG or JPG) of your signature. Transparent PNGs look the best.
Click 'Sign PDF' and download your legally-binding document.
In most jurisdictions, adding an image of your signature (e-signature) is considered legally binding for standard agreements.
Absolutely. We do not store your files on our servers. The signed document is deleted immediately after you download it.
Handling document workflows requires strict adherence to privacy and formatting standards. When processing files for designers, sensitive data such as personal identifiers, financial ledgers, and institutional credentials must never be exposed to third-party databases. PDFixo provides instant client-side execution, ensuring zero data persistence and immediate lossless results.
Files remain isolated in browser volatile memory. Zero server uploads guarantee compliance with institutional and corporate privacy mandates.
Eliminate slow uploads and remote queue times. High-performance WebAssembly executes transformations locally at device-native speeds.
Preserves native fonts, margins, annotations, and vector geometries without rasterizing text or introducing compression artifacts.
Yes. PDFixo utilizes a unique client-side in-memory architecture. Your documents are processed entirely inside your web browser sandbox using WebAssembly and Web Workers. Your files are never uploaded to, saved on, or viewed by our servers.
No installation, extension, or account registration is needed. You can use this utility directly on any device including Windows, Mac, iPhone, and Android completely free.
No. Vector geometries, embedded fonts, layers, and color profiles are strictly maintained to ensure professional fidelity and compliance.
There are zero artificial paywalls or document limits. Because computation runs locally on your device, processing capacity is limited only by your browser's available memory.