Launched this week

口袋工具箱 PocketKit

Launched this week

100% browser-local developer tools & playable AI games

8 followers

100% browser-local developer tools & playable AI games

8 followers

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A premium, offline-first toolbox with 114 privacy-safe utilities (JSON formatter, JWT decoder, PDF merger, GPT tokenizer) and a gallery of 77 playable AI-generated HTML5 games with open-source prompts. 100% free, zero uploads.

Free

Launch tags:Web App•Developer Tools•Games

Launch Team

Framer AI AgentsDesign and publish professional sites with AI

Promoted

Maker

📌

Hi Product Hunt community! 👋 I’m the creator of **PocketKit**. I am incredibly excited to share this project with you all today! ### 🔒 Why I built PocketKit Like most developers and digital creators, my browser bookmarks were cluttered with quick utilities: merging PDFs, formatting JSON, decoding JWTs, or checking GPT tokenizer counts. But I’ve always felt a sense of anxiety pasting client data, API keys, or sensitive contracts into random online tools. We never know if those servers are caching our inputs. That’s why I built PocketKit — a **100% browser-local, privacy-first toolbox**. ### 🛠️ What makes it special? 1. **Zero Data Uploads**: Everything runs locally in your browser sandbox using Web APIs and WASM (e.g., local PDF compiling). No servers see your files. It even works completely offline! 2. **PWA Standalone App**: You can install it on macOS/Windows in one click. It runs in a standalone native window, ready whenever you need it. 3. **AI-Generated HTML5 Games**: I used LLMs (Claude & Fable) to "prompt" 20 retro games (like *Ice & Fire*, *3D Tank Battle*, *Mini MOBA*). 4. **Open-Source Prompts**: I’ve published the **exact English Prompts** I used for every single game on their detail pages. If you're studying prompt engineering for code generation, this is a playground for you! 5. **SEO & Speed Optimized**: Built with Vite+React, optimized with Playwright pre-rendering for instant loads and SEO fallback. ### 💬 Let's chat! PocketKit is 100% free, has no ads, and requires no registration. I’d love to hear your thoughts: * Which developer tools do you use most frequently on a daily basis? * What are your thoughts on prompt engineering limits for full-game generation? I’ll be here all day responding to your comments and feedback. Thank you so much for the support! ❤️ Play & test it here: **[https://www.pokitx.com](https://...**

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1d ago

One thing I'd love to see is a sync option for the toolbox settings and favorites across devices using something like iCloud or Google Drive, so I don't have to manually reconfigure everything when switching between my phone and laptop.

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21h ago

Maker

@elifozgulb33111 thanks for the fantastic suggestion! That is indeed a huge quality-of-life feature when switching between desktop and mobile.

Since PocketKit is built on a privacy-first, no-upload philosophy, we don't want to store your settings or favorites on our own servers. However, syncing via the user's own cloud storage is the perfect way to preserve 100% privacy!

Here is how we plan to tackle this in our upcoming updates:

Immediate workaround (Import/Export): In the next minor update, we will add a quick "Export/Import Settings" option. You'll be able to download your configurations as a tiny JSON file and load it on any device.
Client-side Cloud Sync (WebDAV / Google Drive): We are adding this to our roadmap! We plan to integrate client-side sync using WebDAV (so you can sync to your own Nextcloud/Jianguoyun) and Google Drive API directly from the browser. Your credentials and sync files will stay entirely on your device and your personal cloud.

Thank you again for helping us make PocketKit better! I've added this straight to our roadmap. 🚀

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18h ago