The Best Free Document & PDF Tools Online (Zero Upload)
Edit PDFs securely, generate B2B electronic invoices (ZUGFeRD/Factur-X), assemble PDFs, and strip sensitive metadata from your files securely.
#1
Local PDF Editor
Edit, sign, and annotate PDFs 100% locally in your browser. No uploads, no server.
TechPulse processes everything locally in your browser using JavaScript and WebAssembly. Your documents never leave your device.
Open PDF Editor#2
Local E-Invoice Generator
Create legally compliant ZUGFeRD / Factur-X invoices directly in your browser.
Generates a standard visual PDF with deeply embedded machine-readable XML data. We never collect or transmit your confidential financial figures or client details.
Open ZUGFeRD Generator#3
Local PDF Assembler
Merge multiple PDFs and Images into a single document.
Your sensitive documents never leave your machine. All PDF assembly happens locally in your browser memory via WebAssembly/JS. We do not store, log, or transmit your files.
Open PDF Assembler#4
Local Metadata Stripper
Remove hidden GPS coordinates and tracking data from Images and PDFs.
Your files are parsed and scrubbed directly in your browser's memory. We do not upload your identifiable data to any backend, ensuring complete anonymity.
Open Metadata Stripper#5
Local Big Data Analyzer
Query CSV, JSON & log files with real SQL — powered by DuckDB-WASM, entirely in your browser.
DuckDB-WASM runs a complete analytical database locally. Your data stays in browser memory — we have zero access to your files, queries, or results.
Open CSV Analyzer