Activation Modes: As-You-Type by Default, Hotkey on Demand

By default, Lightning Assist fires your snippets the moment you finish typing them — no hotkey, no extra key press. You type a small prefix (; or /) directly before the snippet key (for example ;meeting), and the expansion happens inline. If you'd rather have an explicit trigger, switch to Hotkey Mode in one click. Either way, you stay in full control.

Part of the Lightning Assist text expander — the cross-platform productivity app for Windows, macOS, and Linux.

How Your Snippets Fire — Default and Optional

Lightning Assist ships with As-You-Type Mode (also called Inline mode) turned on by default, because most people want the fastest possible flow. Hotkey Mode is available as an optional alternative if you want every expansion to require a deliberate key press. You can switch between them any time in the app's settings, and your choice syncs across devices.

Default — As-You-Type Mode (Inline)

Type a small prefix character — semicolon (;) or slash (/) — directly followed by your snippet key (for example, ;meeting or /meeting). Lightning Assist recognises the prefix-plus-key sequence and replaces it inline with your snippet text. No hotkey, no menu, no extra step. You can change the prefix character (; or /) at any time. By default, the expansion style is Instant — the snippet fires the second the sequence completes. If you'd rather have a small space delimiter that actually activates the expansion, switch to After-space style: the snippet then waits for you to press space, tab, or punctuation before it fires (useful if you sometimes type words that overlap with your snippet keys).

Why we made this the default: typing a prefix is one extra character, but it costs you zero hand movement and zero context switch. Compared to reaching for a hotkey, it's measurably faster across long writing sessions, and the prefix completely eliminates the risk of an accidental expansion in normal prose.

Optional — Hotkey Mode (Trigger-based)

Type your snippet key (for example, meeting), then press a hotkey (such as Ctrl+Space or any combination you assign) to fire the expansion. Nothing happens until you press the hotkey. Best if you want an unambiguous, deliberate trigger — for example if your snippet keys are real words you also type as regular text, or if you prefer your hands to confirm every expansion. Hotkeys are fully customizable, including per-feature hotkeys for AI commands, voice-to-text, and the Quick Access window.

Two expansion styles inside As-You-Type Mode

Instant (default) — the snippet fires the moment the prefix-plus-key sequence is complete. Zero delay. Ideal when your snippet keys are unique tokens that never appear in normal writing (e.g. ;meeting, ;sig, ;reply).
After-space (optional space delimiter) — the snippet waits until you press a space, tab, or punctuation mark before it fires. This way the space character itself is the activator, which is helpful if you want a small "commit" step before every expansion, or if your snippet keys sometimes appear inside longer typed words.

How to switch modes or styles

Open Lightning Assist → Settings → Activation Mode. Pick As-You-Type (default) or Hotkey. If you stay on As-You-Type, you can also pick the prefix character (; or /) and the expansion style (Instant — default, or After-space — optional space delimiter). Your choice is remembered per account and syncs across devices.

Privacy note: both modes do all matching locally on your device. Keystrokes are never recorded, stored, or transmitted to our servers — see the Privacy Policy for full details.

What are Triggers?

Triggers are the signals that tell Lightning Assist to fire a snippet. In the default As-You-Type Mode the trigger is the prefix character (; or /) you type immediately before the snippet key — and, optionally, the space/punctuation that follows it if you choose the After-space style. In the optional Hotkey Mode the trigger is a keyboard shortcut you press after typing the snippet key. Both flows are fully customizable.

Triggers can be customized to match your preferences and workflow. You can set different triggers for different features, or use the same trigger for multiple features.

Types of Triggers

Text Expansion Trigger: Press this key after typing a snippet shortcut to expand it into the full text. This is the primary trigger for text expansion.
AI Command Trigger: Activate AI commands with a custom hotkey. Select text and press the trigger to open AI command options.
Quick Access Trigger: Fixed at Alt + C (or ⌥ + C on macOS). Opens the Quick Access Window.
Speech-to-Text Trigger: Push-to-talk key for speech-to-text: Ctrl + Window Key on Windows; Ctrl + Cmd on macOS.

How to Configure Triggers

Go to Triggers Page - Open Lightning Assist and navigate to the "Triggers" page in the settings or main menu.
Select Feature - Choose the feature you want to configure a trigger for (text expansion, AI commands, etc.).
Set Hotkey - Click on the trigger field and press your desired key combination. The trigger will be saved automatically.
Enable/Disable - Use the checkbox associated with each trigger to enable or disable it. Disabled triggers won't activate their features.
Test Trigger - Test your trigger to ensure it works correctly and doesn't conflict with other applications.

Common Trigger Configurations

Text Expansion

Common triggers: Tab, Space, Enter, or custom combinations like Ctrl+Space. Choose a key that's comfortable and doesn't conflict with your workflow.

AI Commands

Custom hotkeys like Ctrl+Shift+A or Alt+A work well for AI commands. Choose something memorable and easy to press.

Speech-to-Text

Default is Ctrl + Window Key on Windows; Ctrl + Cmd on macOS (hold to record, release to transcribe). Can be customized to other keys if needed.

Quick Access

Fixed at Alt+C (or ⌥ + C on macOS) and cannot be customized. This ensures consistency across all installations.

Best Practices for Triggers

Choose Comfortable Keys: Select triggers that are easy to reach and comfortable to press frequently.
Avoid Conflicts: Make sure your triggers don't conflict with other applications or system shortcuts.
Use Modifier Keys: Modifier keys (Ctrl, Alt, Shift) help prevent accidental triggers in normal typing.
Test Thoroughly: Test your triggers in different applications to ensure they work correctly everywhere.
Keep It Simple: Simple, memorable triggers are better than complex combinations that are hard to remember.

Troubleshooting Triggers

Trigger Not Working

If your trigger isn't working, check that it's enabled in the Triggers page (look for the checkbox associated with it). Also verify that Lightning Assist is running and the trigger isn't conflicting with another application.

Conflicts with Other Apps

If your trigger conflicts with another application, try a different key combination. Modifier keys (Ctrl, Alt, Shift) often help avoid conflicts.

Trigger Works in Some Apps But Not Others

Some applications may capture certain keys before Lightning Assist can process them. Try a different trigger key or check the application's keyboard shortcut settings.

Configure Your Triggers

Triggers are fully customizable in Lightning Assist. Start your free trial and configure your perfect keyboard shortcuts.

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Frequently Asked Questions

What's the default — do my snippets expand automatically, or do I need a hotkey?

By default, snippets expand automatically. Lightning Assist ships with As-You-Type Mode (also called Inline mode) turned on, so you just type a small prefix (; or /) directly before your snippet key — for example ;meeting — and the expansion fires inline, with no hotkey press. If you'd prefer an explicit trigger, you can switch to Hotkey Mode any time in Settings → Activation Mode and the same snippets will then expand only when you press your assigned hotkey.

What's the difference between Instant and After-space expansion?

These are two styles inside the default As-You-Type Mode. Instant (the default) fires the snippet the moment the prefix-plus-key sequence is complete, with zero delay. After-space is an optional space delimiter — the snippet waits until you press space, tab, or punctuation before it fires, so the space character itself becomes the activator. Pick After-space if your snippet keys are real words that sometimes appear inside longer text you type; pick Instant if your snippet keys are unique tokens like ;sig or ;reply that never collide with normal writing.

Is As-You-Type Mode safe? Does it send my keystrokes anywhere?

Yes, it's safe and local-only. All pattern detection runs entirely on your device. Lightning Assist never records, stores, or transmits your keystrokes to any server or third party. The only information we retain about the feature is your chosen activation mode, prefix character, and expansion style — saved as part of your account settings.

Can I use the same trigger for multiple features?

No, each feature needs its own unique trigger. However, you can use similar triggers (e.g., Tab for text expansion and Shift+Tab for AI commands).

Why can't I customize the Quick Access trigger?

Quick Access is fixed at Alt+C to ensure consistency across all installations and prevent conflicts. This is a design decision to maintain reliability.