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DocoPDF
About the developer

Deepak Kumar — the developer behind DocoPDF

One developer in India, one promise — your files never leave your device.

Halftone dot-matrix portrait of Deepak Kumar, the developer of DocoPDF

Deepak Kumar

Founder & developer — DocoPDF · TRIVANTA AGRO

I'm Deepak Kumar — I design, build, test and ship every part of DocoPDF myself: the tools, the self-built PDF engines, the servers, the Hindi translations, even this page. What started as a frustration with upload-happy PDF sites became a complete toolbox that runs entirely on your device.

  • India
  • Solo developer
  • 144/147 tools live
  • ₹0/month infrastructure

The story

The first version was small — a handful of tools that merged and split PDFs right in the browser. But the idea was fixed from day one: if a job can be done on your device, it should be.

The turning point came from another world. Years spent beside poultry farmers, dealers and field teams — work that later grew into TRIVANTA AGRO — showed how much daily business still runs on manual paperwork and tools that demand your files. Watching people hand sensitive documents to random upload sites settled it: honest tools had to exist, and they had to run on your own device.

Since then the toolbox has grown to 147 tools — OCR that reads Hindi, e-invoice generation, digital signatures, image work — and every engine powering them is self-hosted, so nothing calls home to a third-party CDN.

There is no team, no office and no investor. There is a build queue, an owner console, a coffee — and the belief that honest software beats loud marketing.

How DocoPDF is built

  • One codebase

    Next.js and TypeScript render every page and power every client tool — the same code runs on the server for SEO and in your browser for speed.

  • Real local processing

    WebAssembly engines and web workers do the heavy lifting in background threads — merging, OCR, compression — on your device, with no uploads and no network round-trips.

  • Self-hosted, zero CDNs

    The PDF renderer, the OCR models, the Hindi fonts, the QR engine — all served from DocoPDF's own domain. Nothing loads from third parties.

  • ₹0/month infrastructure

    Free tiers only — Vercel, Turso, GitHub. No ads, no investor money, no data selling. Costs stay at zero, so the everyday tools stay free.

What I build by

  • Privacy is a feature, not a settings page — it is the default state of every tool.

  • Everyday work stays free, forever — no watermarks, no tricks.

  • Honesty in the UI: mode badges tell you exactly where your file goes.

  • English and हिंदी as equals — including inside generated PDFs.

  • Ship small, verify everything — every tool passes end-to-end tests before it goes live.

The craft behind the tools

  • Self-built PDF engines — parsing, writing, forms, digital signatures, written from scratch

  • On-device OCR in Hindi & English — runs entirely in your browser, powered by WebAssembly

  • WebAssembly & web workers — heavy work in background threads, never on a server

  • Next.js + TypeScript — one codebase for SEO-fast pages and client-side speed

  • Devanagari typography — real Hindi text shaping inside generated PDFs

  • E-invoice formats — IRP-aligned XML/JSON generation and validation

  • Zero-cost infrastructure — Vercel, Turso and GitHub free tiers, nothing else

  • SEO & performance — structured data, sitemaps and Core Web Vitals, done by hand

Beyond DocoPDF — TRIVANTA AGRO

The same hands, a second platform. While DocoPDF serves everyday document work, TRIVANTA AGRO serves India's poultry industry — farmers, dealers and businesses — with the same farmer-first, honesty-first thinking.

  • The story

    From understanding the ground realities of poultry operations — farms, dealer networks, field-level sales — to shaping digital tools around how people actually work, not how reports say they should.

  • The platform

    Farmer calculators, records and daily-operations tools at trivantaagro.com — simple enough for a first-time smartphone user, dependable enough to run a business on.

  • The belief

    Every system has a human purpose behind it. A farmer saving time on records and a student compressing a PDF deserve the same care — tools that simply work.

Technology should not replace people — it should empower them.

— Deepak Kumar

Frequently asked questions

Try the toolbox — or say hello

Every tool is one click from home, no signup. And if you have an idea, a bug or just a hello — the contact form reaches me directly.

Search tools

Search the DocoPDF toolbox by name, tag or Hindi keyword.