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Sendly Icon Platform Engine

Discover the Zero-Knowledge and Peer-to-Peer architecture powering our suite of developer and productivity tools.

Secure File Transfer

Using military-grade AES encryption directly in your browser. We never see your files, and they are instantly deleted the moment they are downloaded.

1. Upload & Encrypt

Select files up to 1GB. Add a password to mathematically lock your file before it ever leaves your device.

2. Get Your Key

We generate a single-use 6-digit key. Your scrambled file waits on our server, unreadable to us.

3. Decrypt Locally

The receiver enters the key and password. The file unlocks directly in their browser.

Live Screen Mirror

Zero-latency, peer-to-peer screen sharing using raw WebRTC protocols. No software downloads or browser extensions required.

1. Capture Screen

Your browser securely accesses your system's Display Media API to capture a window or entire monitor.

2. P2P Handshake

We use Socket.io to exchange ICE candidates and establish a direct route between the two computers.

3. Direct Stream

The video feed bypasses our servers completely, streaming directly from your computer to the viewer.

⚡ Local Drop (P2P Wi-Fi Beam)

Serverless localized file transfer across your home or office Wi-Fi network. By connecting peers directly over LAN WebRTC channels, transfers execute at full Gigabit router speed with zero file size restrictions.

1. Wi-Fi Discovery

Open Local Drop on any two devices connected to the same network. Our LAN signaling channel instantly identifies matching subnet nodes.

2. Peer Coupling

Verify matching cryptographic avatars or input a custom security PIN to establish an authenticated direct WebRTC socket.

3. Unbound Beaming

Drag and drop massive disk images, video vaults, or project folders. Data streams straight through your hardware without cloud throttling.

Collaborative Notepad

Real-time multiplayer text editing. We use sub-millisecond WebSocket events to sync cursors and HTML elements across multiple devices instantly.

1. Open Workspace

Instantly spin up a rich-text content editable environment attached to a secure WebSockets room.

2. Invite Peers

Share your access key. Colleagues instantly join your exact session without needing accounts.

3. Instant Sync

Every keystroke emits a tiny data packet, calculating exact cursor offsets to prevent layout jumping.

Zero-Knowledge JSON Formatter

Offline CodeMirror data processing. You can safely paste massive, sensitive database payloads without fear of data leakage.

1. Local Import

Paste messy or minified JSON code directly into the browser. The data never hits a backend network.

2. Offline Formatting

Our integrated CodeMirror engine uses pure client-side Javascript to instantly beautify the code.

3. Export Safely

Copy the formatted string or generate an instant local .json file download from the browser memory.

🔍 Diff Checker & Syntax Analyzer

High-precision offline line-by-line comparison engine. Analyze modified code snippets, API config files, and commit documentation with zero latency or external network transmission.

1. Input Snippets

Paste original and modified source code side-by-side. Our offline JS tokenization parser instantly constructs abstract syntax arrays.

2. Diff Computation

An advanced Levenshtein distance matching algorithm highlights additions, deletions, and inline character modifications in sub-second time.

3. Merge & Export

Seamlessly toggle between unified diff views and split panes, then export your cleaned code directly back to your project workspace.

📊 JSON Cracker & Node Graph Engine

Transform convoluted JSON objects and deep database hierarchies into interactive, visual data node diagrams right inside your browser memory.

1. Paste Schema

Input API responses, GraphQL schemas, or large configuration payloads without worrying about external data privacy or server leaks.

2. Interactive Graphs

Watch as raw text transforms into beautifully rendered, interconnected node trees with searchable properties and expandable branches.

3. Export Visuals

Easily navigate complex API payloads and save clean visual diagrams to share with engineers and frontend teams.

💻 Standalone Windows & Desktop App (PWA)

Install Sendly natively onto your Windows PC or desktop workstation for single-click launches, offline capability, and zero system bloat.

1. One-Click Install

Click the installation icon in your browser address bar or menu to mount Sendly directly to your Windows desktop and Start Menu.

2. Native Execution

Runs in a clean, borderless standalone app window without browser tabs or distracting toolbars, utilizing less system memory than heavy installers.

3. Instant Offline Support

Our integrated Service Worker caching layer allows developer tools and Local Drop interfaces to boot instantly even without an internet connection.

💬 Need Help or Have Feedback?

Our dedicated support team is here to assist you with troubleshooting, feedback, or custom inquiries.