100% Local Processing
When you drag & drop app screenshots into Studio, they are decoded via local HTML5 FileReader and Canvas APIs. They never touch any external server.
Your unreleased apps and designs never leave your machine.
We engineered AppPublisherX with a strict privacy-first architecture: 100% of screenshot compositing, 3D perspective projection, and ZIP compression executes locally inside your web browser. Your confidential product screens and upcoming launch features stay completely private.
Local Execution Pipeline
How data flows strictly inside your browser.
01
Local Ingestion
HTML5 FileReader decodes your screenshot files into memory within your browser sandbox. Zero bytes sent over HTTP.
02
GPU Compositing
HTML5 2D Canvas and Three.js WebGL project your screenshots onto device cutouts with realistic lighting in hardware memory.
03
In-Memory Bundling
Client-side JSZip compiles your full deck of 24-bit RGB PNG files directly in local RAM into an organized ZIP archive.
04
Direct Disk Save
Browser Blob URLs and the HTML5 FileSaver API trigger a direct save from RAM to your operating system's download folder.
Architecture Comparison
AppPublisherX vs Traditional Cloud Screenshot Tools.
See why privacy-conscious mobile developers choose client-side creative tools for pre-launch releases.
| Privacy & Technical Feature | AppPublisherX | Traditional Cloud Tools |
|---|---|---|
| Screenshot File Storage | 0 bytes stored (RAM only) | Uploaded & stored on cloud databases |
| NDA & Unannounced App Safety | 100% Safe (Zero network egress) | Vulnerable to server breaches & data leaks |
| Offline Capability | Works fully offline in browser cache | Requires constant active cloud connection |
| Export Rendering Speed | Instant client-side GPU rendering | Delayed by remote server queue processing |
| Tracking & Telemetry Cookies | 0 tracking cookies, 0 ad trackers | Invasive tracking, retargeting & pixels |
| AI Key Storage (Optional) | Private browser localStorage only | Stored and logged on vendor servers |
Trust Pillars
Principles protecting your intellectual property.
NDA & Beta Launch Safe
Building in stealth mode or prepping a confidential press release? Because zero assets leave your device, there is zero risk of early leaks or NDA breaches.
Private API Key Storage
If you choose to use the optional Gemini AI copywriting feature, your API key is stored exclusively in your browser's private localStorage.
Store Policy Compliance
Export bundles strictly follow Apple App Store Connect and Google Play Console guidelines: correct 24-bit RGB depth, no illegal alpha channels, and exact aspect ratios.
Zero Invasive Cookies
We do not track your behavior, sell advertising data, or use invasive third-party analytics scripts. Studio functions cleanly without tracking your design sessions.
Transparent Web Tech
Open DevTools anytime to verify our network traffic: you will see zero image egress during your entire editing, transformation, and download session.
AppRerum Umbrella Privacy
AppPublisherX is an official property of AppRerum. All platform usage and data protections adhere directly to the overarching AppRerum Privacy Policy.