All-In-One Modern
PDF & Document Suite
Download the official PDF Tools app directly from Google Play or use our instant in-browser web playground. Merge, convert, compress, OCR, and encrypt documents with complete zero-data retention.
Try The Group of Dada PDF Engine Right Now
Test real client-side PDF operations below. Your files never touch a server; processing happens 100% inside your browser memory.
Select or drop 2 or more PDF files to Merge
Multi-file selection supported • High fidelity page combiner
Comprehensive PDF Tools by Group of Dada
Everything your organization needs to manage, convert, secure, and automate documents with zero friction.
PDF Merge & Combiner
Combine multiple invoices, reports, or legal briefs into a single streamlined document with customized page order and bookmarks.
PDF Splitter & Extractor
Extract specific page ranges, split by chapter or size, or divide a 500-page book into individual standalone single-page PDFs.
Lossless PDF Compressor
Shrink heavy government filings and scanned documents by up to 80% without blurring vector text or ruining image clarity.
PDF to Word / Excel
Convert non-editable PDF reports directly into fully styled Microsoft Word (.docx) documents and tabular Excel (.xlsx) spreadsheets.
AI OCR & Text Extraction
Turn scanned camera photos, receipts, and physical agreements into selectable, searchable, and machine-readable text layers.
Protect & Decrypt PDF
Apply cryptographic passwords, restrict printing and copying permissions, or remove lost access locks with standard owner keys.
Digital Signature & Stamp
Sign documents with an electronic signature pen, insert corporate company stamps, and add custom confidentiality watermarks.
Image Converter (JPG / PNG)
Convert JPG, PNG, and WebP image collections into publication-ready PDF books or export PDF pages as high-resolution PNG photos.
Developer API & SDK
Integrate Group of Dada’s high-throughput document processing endpoints directly into your Node.js, Python, or Go microservices.
Built from scratch for maximum speed, security, and developer joy.
Most online PDF convertors force you to upload personal financial papers, legal drafts, and medical records to their centralized cloud servers. We took a fundamentally different approach.
True Local-First Privacy
Your files are never transmitted to any third-party server. Everything is rendered via HTML5 canvas and WebAssembly inside your browser.
Zero Upload Latency
Don’t wait 10 minutes to upload a 200MB PDF. Processing begins in milliseconds using your device’s multi-core CPU.
Zero Hidden Fees & Unlimited Usage
No subscriptions, no annoying page limits, and no watermark stamps on your finished documents.
import { DadaPDFEngine } from '@groupofdada/core';
// 1. Initialize local browser pipeline
const engine = new DadaPDFEngine({
privacyMode: 'zero-knowledge-ram',
webAssemblyAcceleration: true
});
// 2. Merge PDF documents locally
const mergedDoc = await engine.merge([
docA.arrayBuffer(),
docB.arrayBuffer()
]);
// 3. Export high-fidelity PDF without server roundtrips
const downloadUrl = await engine.toBlobUrl(mergedDoc);
console.log(`✅ Done in 18ms! Memory purged.`);
How to Link groupofdada.com
You already own the domain until 2029! Follow these 2 easy steps in your Domain Registrar (Hostinger / Namecheap / GoDaddy) to connect this free static site:
Method 1: Vercel (Recommended)
Free SSL, 100GB Bandwidth, Global Edge CDN
DNS Records to add in your domain panel:
Deploy folder to Vercel via CLI or GitHub repo, add groupofdada.com in Vercel project Settings > Domains.
Method 2: GitHub Pages
100% Free Forever, Zero Expiration
DNS Records to add in your domain panel:
Push code to a GitHub repo, go to Repo Settings > Pages, and enter groupofdada.com under Custom Domain.
Need help with DNS propagation?
Once you update the DNS records in your domain panel, it typically takes 5–30 minutes to become live worldwide.
Group of Dada Technologies
Group of Dada is an independent software technology lab dedicated to creating accessible, high-performance web applications and document utilities. Founded on the principle that essential digital tools should be completely private, lightning-fast, and accessible without expensive paywalls.