DEV Community: SHAMIM

Why I Built 14 Privacy-First Browser Tools Using WebAssembly & WebGPU (No Uploads, Free Forever)

SHAMIM — Thu, 12 Nov 2026 15:13:42 +0000

Most online utility websites work the same way: you upload a confidential PDF, photo, or audio file to a random server, wait in a queue, dodge popups, and hit a paywall when you try to download the result.

I got tired of that pattern and built DodoDeck — a suite of 14 everyday tools that execute 100% locally inside your browser using WebAssembly and WebGPU. When you close the tab, your data is gone. Zero server uploads.

What Runs Locally in Your Browser:

Free Online PDF Editor — Edit text directly, whiteout watermarks, add signatures, and format with Unicode or Bengali fonts (Bijoy 52 / SutonnyMJ).
AI Background Remover — Runs on your local GPU via WebGPU with HD transparent PNG export and batch mode.
Dodo File Share — Send up to 1GB directly browser-to-browser via WebRTC.
2FA TOTP Generator, URL Shortener, QR & Barcode Maker, SmartWriter, Text-to-Audio, Audio-to-Text, and Image Resizer — zero tracking, zero artificial limits.

Two Free Chrome Extensions (Zero Paywalls):

TakeFullPage (Install on Chrome Web Store) — Full-page scrolling & selected-area screenshots with a built-in editor (crop, pen, arrows, highlight, blur redaction) and 1-click export to HQ PNG, PDF, clipboard, or Telegram.
Dodo Password Manager (Install on Chrome Web Store) — Zero-knowledge AES-GCM-256 vault (600,000 PBKDF2-SHA256 rounds), 1-click autofill, FIDO2 passkeys, and built-in 2FA TOTP with unlimited free device sync.

Would love feedback from fellow developers on the WebAssembly / WebGPU performance and security architecture!

Tired of paywalls for simple web tasks? Built DodoDeck: 100% free in-browser tools (PDF text editor, AI text-to-speech, exact KB image resizer & 1GB P2P file share). Zero sign-up & no watermarks! Try it free 👉 https://dododeck.com

SHAMIM — Sun, 18 Oct 2026 08:53:07 +0000

DodoDeck — Free, Private & In-Browser Digital Tools

All the essential digital tools you need in one place. Free, private, and lightweight web tools for PDF editing, writing, media conversion, and security.

dododeck.com

10 Essential In-Browser Web Tools Built for Speed and Privacy

SHAMIM — Sun, 18 Oct 2026 08:50:03 +0000

Look, if you’re a developer, designer, or just someone who creates digital content, you know that half the job is getting stuck on the boring stuff. We’re talking about the grind: hunting for that one typo in a PDF, fighting an image file to shrink it just enough for a strict upload portal, or generating a 2FA token. And yeah, the tools usually available for these tiny fixes are a pain. They’re bloated, they want to charge you for basic features, they force you to sign up for an account, or worse, they upload your sensitive files to some random server we don’t trust.

DodoDeck tried to fix that. They built a suite of fast, lightweight utilities that run right in your browser. Everything happens on your end, not on a remote server. Here’s what makes their free tools actually useful.

Take their PDF editor, for instance. It’s a solid go-to if you need to tweak text or sign a document quick without firing up Adobe Acrobat. You can edit existing text, add notes, drop in a signature, and export the file clean—no watermarks. It just works in the browser.

Then there’s the text-to-speech generator. If you need to turn a script or study notes into audio, this is pretty neat. They’ve got over 35 voice models that sound surprisingly human, support multiple languages, and they don’t cap the character count. It’s a nice mix of quality and flexibility without the usual restrictions.

For those annoying image size limits, DodoDeck has a resizer that actually lets you hit the exact kilobyte number a portal demands. You know those visa or job application forms that say “file must be under 100KB”? It’s a hassle, but their tool lets you set exact dimensions and file sizes for JPEG, PNG, and WebP formats. No guessing games.

If you need to move heavy data, their P2P file transfer tool is a lifesaver. You can send files up to 1GB for free, no expiration dates, and no need to subscribe to cloud storage. It generates a clean share link without requiring you to install any software. It’s definitely less of a headache than most alternatives.

Lastly, they have a client-side 2FA tool. If you’re worried about losing your phone or having sync issues with centralized apps, this is a good backup. It generates standard RFC 6238 codes right inside your local browser storage.

Why does the in-browser part matter? Mostly because it keeps your stuff private. Since everything processes locally, your files never leave your device. It’s also friction-free: no sign-ups, no credit cards, and no popups trying to sell you a subscription. It works on Windows, macOS, Linux, and mobile browsers without any extra setup.

You can check out the full toolkit at DodoDeck.com or look at their engineering blog if you want to dig into how it all works.