BunchTool — Incognito Detector
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🕵️ Private Sandbox Audit
🕵️
Scan Verdict: Standard Tab
📊 Sandbox Environment Metrics
Storage Quota Check:
Filesystem Sandbox: Available
IndexedDB Allocation: Available
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🛡️ Privacy Tools

Incognito Detector —
Private Browsing Mode Auditor

Audit whether your active session is running inside a Private or Incognito tab with our free Incognito Detector. Evaluate StorageManager quota limits, FileSystem API access blocks, and IndexedDB sandbox states directly inside your browser with complete privacy.

StorageManager estimate API quota threshold evaluation
WebKit FileSystem API permission boundary test
IndexedDB sandbox access & error callback detection
100% private client-side execution — session stats are never uploaded to remote servers
🕵️
FastInstant Read
FreeAlways
0 Uploads100% Private
How It Works

Detect Incognito mode in three easy steps

Step 1
🕵️
Load Tool Page

Open the tool to trigger automatic storage quota and sandbox checks.

Step 2
⚙️
Inspect Shield Verdict

Review the visual shield verdict card (Private / Incognito vs Standard Tab).

Step 3
📊
Review Sandbox Metrics

Examine storage quota values, FileSystem permissions, and IndexedDB status.

Why BunchTool

Why use our free Incognito Detector tool?

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Multi-Vector Sandbox Heuristics

Evaluates StorageManager quota caps, FileSystem access, and IndexedDB error callbacks in parallel.

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Private Browsing Safety Verification

Helps users verify if their current browser window enforces private browsing isolation guarantees.

🛡️
100% Private Local Audit

All sandbox scans run in local browser memory. Zero session data is transmitted to external servers.

FAQ

Frequently asked questions

Is the Incognito Detector tool free to use?
Yes — the BunchTool Incognito Detector is completely free with zero usage limits or subscriptions. Test whether your browser's private browsing or incognito mode can be reliably detected.
How does the tool detect Incognito mode?
The tool checks browser sandbox markers including restricted storage quota limits (StorageManager API), FileSystem API access blocks, and IndexedDB availability callbacks.
Does detecting Incognito mode violate user privacy?
No. The diagnostic checks execute 100% locally inside your browser memory without logging any data to external servers.
Why do private windows restrict storage quotas?
Browsers restrict temporary storage in private tabs to prevent persistent tracking cookies and minimize disk writes that could linger after session closure.
Detailed Guide

Understanding Private Browsing Mode Architecture & Sandbox Heuristics

Private Browsing (Incognito) mode isolates browsing sessions by preventing disk persistence of cookies, browsing history, and site cache.

To enforce non-persistence, browser engines clamp navigator.storage.estimate() quota ceilings (often capping available RAM-backed storage below 1200MB) and disable permanent FileSystem APIs.

Cross-referencing multiple storage API behaviors allows client-side scripts to verify whether private session sandboxing is active without requiring server network calls.

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