// BROWSER EXTENSION
Extension popup & settings
The Omna popup is both a session dashboard and a control panel — it shows what Omna has done this browser session and lets you change protection and file-handling settings without leaving your page. Every toggle takes effect immediately, no reload needed.
Opening the popup
Click the Omna icon in your Chrome toolbar. If it's hidden behind the extensions puzzle-piece, pin Omna for quick access.
Session stats
The top of the popup shows live counters for the current session (they reset when you start a new browser session):
| Stat | What it shows |
|---|---|
| Token savings | Tokens trimmed this session and an estimated API cost |
| Compression ratio | Overall size reduction — "77% compression" means you sent 23% of the original tokens |
| Fields masked | Total PII fields masked across all attachments this session |
Protection settings
Click the gear icon to open Settings. The Protection section has three toggles:
- Auto-mask PII in chat (on) — masks detected PII in every outgoing message on every site before the request is sent. Best left on.
- Scrub PII from files (on) — masks PII found in attachments during slicing; masked fields are counted in the stats and flagged in the banner.
- Shield mode (off) — swaps placeholder labels back to real values in the AI's response, from your local session registry.
File handling
The File Handling section controls how attachments are treated:
Slice mode (default)
Omna intercepts every attachment, keeps only the rows relevant to your question, masks PII, and swaps in the slice. The AI never sees the original. Recommended for most users.
Advisory mode
Omna doesn't slice — the original passes through, but Omna still scans it locally and warns you before sending if it finds sensitive content. Use it when you need to send a complete file.
All settings at a glance
| Setting | Location | Default | Effect |
|---|---|---|---|
| Auto-mask PII in chat | Protection | On | Masks PII in outgoing messages on all Chrome sites |
| Scrub PII from files | Protection | On | Masks PII found in attachments during slicing |
| Shield mode | Protection | Off | Restores real values in AI responses from the session registry |
| File Handling | File Handling | Slice mode | Intercept & slice, or pass through with advisory warnings |