First-screen message editor
Create the text people see first when a Mac is locked, such as a return prompt or a short owner-contact message.
LockLines
LockLines is a macOS utility for designing plain-text lock screen messages with a short visible section and optional scroll-down details. It helps Mac owners, offices, schools, and support teams create readable return instructions, contact notes, asset labels, and device context.
Plain-text lock screen message design for Mac
LockLines is a macOS app for designing plain-text messages for the lock screen. It separates the text shown initially from additional details revealed by scrolling, allowing users to plan a short first impression and a longer explanatory note in one message.
The app is intended for situations where a locked Mac needs context before anyone reaches the desktop. Users can preview both lock screen states, copy the resulting plain-text message, and apply it through macOS System Settings.
Features
Scroll-down details
Add longer instructions, pickup details, asset labels, or test-machine information that appears after scrolling.
Two-state preview
Switch between visible and scroll previews to inspect both lock screen states before applying the message.
Plain-text decoration
Use repeated-character borders and other plain-text decoration to organize the message within the lock screen’s small message area.
System Settings-ready output
Copy the complete generated message and paste it into macOS Lock Screen settings.
Use cases
Lost Mac return instructions
Provide a way to contact the owner and explain how to return a misplaced Mac before anyone logs in.
Owner contact notes
Leave owner contact notes on a shared or unattended computer so the relevant person can be identified from the lock screen.
School and office asset labels
Add department, room, or asset information to Macs used in schools and offices, with longer details available below the initial label.
Conference and demo machines
Identify conference or demo equipment and include context that helps staff recognize its intended use.
Repair, lab, and test devices
Give repair, laboratory, or test machines a visible identity and add handling or test-related notes beneath it.
Pros and Cons
Pros
- Separates the initial visible message from longer scrollable details.
- Shows both lock screen states in a dedicated preview.
- Supports practical messages such as return instructions, owner contacts, asset labels, and test-machine notes.
- Provides a direct copy-and-paste workflow for macOS Lock Screen settings.
- The site provides a Mac App Store download link.
Cons
- Specific supported macOS versions are not stated in the available product information.
- The available documentation describes plain-text output and does not establish support for rich text, images, or other media.
FAQ
How do I apply a LockLines message to a Mac lock screen?
LockLines creates a plain-text message with a first-screen section and optional scroll-down details. After copying it, open System Settings, go to Lock Screen, enable “Show Message When Locked,” choose “Set,” paste the message, and save.
Can I preview both the visible and scrollable parts of a message?
Yes. The app provides separate previews for the first visible message and the scrollable details, showing how the text appears before and after scrolling.
What kind of messages does LockLines create?
LockLines is designed for plain-text lock screen messages. The site describes repeated-character borders and styled plain-text boxes, but does not document support for rich-text formatting or other media.
Which Macs or macOS versions are supported?
The site describes LockLines as a macOS app and provides a Mac App Store download link. Specific supported macOS versions are not stated in the available product information.
Quick Facts
- Category
- Mac utility
- Platform
- macOS
- Output
- Plain-text lock screen message
- Workflow
- Write, add scroll details, preview, copy to System Settings
- Distribution
- Mac App Store download link provided
- Support
- [email protected]
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