🐸 100% On-Device Semantic Tab Search for Chrome

Find any tab by what it's about,
not what it's called.

Live with 40+ open tabs? Forget hunting through tiny favicons or guessing exact page titles. Press ⌘ + ⇧ + Space, type what you remember a page was about, and leap straight to it in milliseconds.

Add to Chrome — Free
Toggle search: ⌘ + ⇧ + Space or Ctrl + Shift + Space

Interactive Live Demo • Try typing below

Quick leaps:

Built for tab hoarders and deep researchers.

The tab title fades.
The content is what people recall.

📐

100% On-Device Vector Search

Runs an ultra-compact vector engine locally on your device. Zero remote code, zero external API keys, zero cloud latency.

⚡

Sub-Millisecond Vector Search

Instant similarity ranking computed entirely on local hardware. Returns top matches in under 2ms even with 50+ tabs open.

🐸

Forever Mode

Leap across open tabs without fear. Pages you close stay searchable on your machine. Press Enter to resurrect the exact tab in one stroke.

🔒

Guaranteed Zero Telemetry

No analytics, no ad trackers, no server endpoints. Your tabs, browsing history, and vector embeddings remain strictly inside your machine's sandboxed storage.

⌨️

Spotlight-Style Keyboard Bar

Press ⌘ + ⇧ + Space or Ctrl + Shift + Space from any web page. The frosted glass panel pops up in a shadow DOM root, completely immune to host page CSS interference.

🪶

Lightweight Footprint

Consumes minimal memory per tab with negligible storage overhead. Zero background battery or CPU drain while idle.

kero the frog wizard defending against the tab horde
SLAP! 40–100+ zombie tabs swarming your RAM?
One kero strike teleports you with precision.
⚡ THE TAB HORDE SLAYER

You don't need a bookmark cemetery.
You need lightning.

Tabs multiply like a relentless horde in the dusk. You open five more "just for a quick reference," and by afternoon your browser is a dark pasture of forgotten titles and choked memory.

kero gives you the wizard's staff. Summon the quiet Spotlight bar with ⌘ + ⇧ + Space, describe what the page was about in plain words, and leap across the horde in under a millisecond.

< 1ms Lightning Strike
100% On-Device Private
~2 KB Per Indexed Tab
🐸 FOREVER MODE • REVERSIBLE STORAGE

Close tabs without fear.
Every byte is visible and reversible.

Most people hoard 40+ open tabs because closing one feels like losing a thought forever.

With Forever Mode, closed tabs stay semantically searchable right on your device (~2 KB per tab).

Storage use is never hidden: inspect your local IndexedDB footprint anytime in the extension popup, and toggle Forever Mode off to purge closed-tab vectors in a single click.

ACTIVE · LOCAL
● 42 open (84 KB) ● 35 closed (70 KB)
154 KB total

How it works.

Effortless semantic recall designed to keep you in flow.

STEP 01
Passive Indexing
kero quietly indexes your open tabs in the background. No manual tagging, saving, or bookmarks needed.
STEP 02
Instant Summon
Press ⌘ + ⇧ + Space or Ctrl + Shift + Space from any webpage or window to bring up the Spotlight search bar instantly.
STEP 03
Contextual Matching
Type what you recall about the page content or topic. kero surfaces the right tab in sub-milliseconds.
STEP 04
One-Stroke Jump
Hit Enter to immediately focus or reopen the target tab, returning you directly to your research.

Simple, transparent pricing.

Start free forever, or upgrade to Pro for power-user superpowers.

kero Free

$0 / forever

Perfect for daily tab switching and finding open tabs with speed.

  • Semantic search on up to 50 active tabs
  • 100% on-device local vector search
  • Global shortcut overlay (⌘ + ⇧ + Space or Ctrl + Shift + Space)
  • Forever Mode for last 24 hours
Install Free
Power User

kero Pro

$29 lifetime access

For researchers, developers, and tab collectors with 100+ tabs.

  • Unlimited tabs across all browser windows
  • Unlimited Forever Mode historical recall
  • Deep full-page search & PDF tab indexing
  • Semantic Tab Clustering ("Close tabs about X")
  • Lifetime license key & priority updates

Frequently asked questions.

How is kero different from standard browser search?
Chrome's built-in tab switcher only does exact substring matching on titles and URLs. If a tab is titled "Pricing & Coverage" and you search "car insurance", Chrome finds nothing. kero understands the semantic meaning of the page content.
Does running vector search slow down my machine?
No. The local vector engine is highly optimized to run purely on-device with an ultra-light memory footprint. It stays completely idle until you trigger a search, with zero perceptible impact on system performance or battery life.
Does any of my browsing data leave my computer?
Zero bytes. kero has no backend servers, no analytics, no tracking scripts, and requires no external API keys. All vectors live in your browser's private local IndexedDB.
What is Forever Mode?
By default, closing a tab purges its vector from memory. Turning on Forever Mode keeps closed tabs searchable (taking ≈ 2 KB per page). Pressing Enter on a closed tab result reopens it instantly.