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Auto scan mode is meikipop’s most powerful feature for reducing perceived latency. When enabled, it continuously scans your screen region in the background, providing near-instant dictionary results.

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What is auto scan mode?

Instead of waiting for you to press the hotkey before taking a screenshot and running OCR, auto scan mode:
  1. Continuously captures screenshots of your scan region
  2. Processes OCR in the background
  3. Caches results so they’re ready instantly when you move your mouse
  4. Eliminates wait time between pressing the hotkey and seeing results
The first time you run the app in auto scan mode, there may be a brief delay as the OCR initializes. After that, lookups are nearly instantaneous.

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Enabling auto scan mode

1

Right-click the tray icon

Find the meikipop icon in your system tray (Windows/Linux) or menu bar (macOS).
2

Toggle auto scan

Click Enable Auto Scan Mode to turn it on. When enabled, you’ll see a checkmark next to this option.
3

Start using it

Move your mouse over Japanese text. The popup appears automatically (by default) without pressing any keys.

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Auto scan mode settings

Auto scan mode includes several configuration options to balance performance and responsiveness.

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Show popup without hotkey

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auto_scan_mode_lookups_without_hotkey
boolean
default:"true"
Config key: auto_scan_mode_lookups_without_hotkeyControls whether the popup appears automatically or requires the hotkey.When enabled (default):
  • Move your mouse over Japanese text
  • Popup appears automatically
  • No hotkey required
  • Most convenient for continuous reading
When disabled:
  • Screen is continuously scanned in background
  • Results are cached
  • Popup only appears when you press the hotkey
  • Faster than manual mode, but with traditional hotkey UX
Disable this if you want auto scan’s performance benefits but prefer pressing a key to show the popup.

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Scan interval (cooldown)

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auto_scan_interval_seconds
float
default:"0.0"
Config key: auto_scan_interval_secondsMinimum time in seconds between automatic scans.How it works:
  • 0.0: Scan as fast as possible (lowest latency, highest load)
  • 0.5: Wait at least 0.5 seconds between scans
  • 2.0: Wait at least 2 seconds between scans (lowest load)
Range: 0.0 to 60.0 seconds
This setting acts as a cooldown to prevent excessive OCR requests. The actual scan frequency may be lower depending on OCR processing time.

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Choosing the right interval

Best for:
  • Fast-paced games or videos
  • When text changes frequently
  • When you have a powerful computer
  • Local OCR providers (owocr)
Drawbacks:
  • Highest CPU/network usage
  • May impact game performance
  • Increased battery drain on laptops

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Only scan on mouse move

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auto_scan_on_mouse_move
boolean
default:"false"
Config key: auto_scan_on_mouse_moveOnly triggers scans when the mouse cursor is moving.When enabled:
  • No scans occur while mouse is stationary
  • First scan happens when you move the mouse
  • Reduces unnecessary processing
  • Lowers system load significantly
When disabled:
  • Scans continue even when mouse is still
  • Catches text changes that occur without mouse movement
  • Higher system load
Enable this if you’re reading static content like visual novels where text doesn’t change unless you move the mouse.

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Performance considerations

Auto scan mode provides a better user experience but increases system resource usage.

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System load impact

Factors affecting CPU load:
  • OCR processing (varies by provider)
  • Screenshot capture frequency
  • Screen region size (smaller = lower load)
  • Image compression (if enabled)
Typical impact:
  • Google Lens: Low CPU, main cost is network
  • owocr with MangaOCR: Moderate CPU usage
  • ScreenAI: Varies by model
Mitigation:
  • Increase auto_scan_interval_seconds
  • Enable auto_scan_on_mouse_move
  • Use region mode instead of fullscreen
  • Choose a smaller scan region
Applies to: Google Lens and other remote OCR providersData per scan:
  • Without compression: 100-500 KB per screenshot
  • With compression: 20-100 KB per screenshot
Estimated hourly usage:
  • At 0.0s interval: 180-900 MB/hour (uncompressed)
  • At 0.5s interval: 72-360 MB/hour
  • At 1.0s interval: 36-180 MB/hour
Mitigation:
  • Enable Google Lens compression
  • Increase scan interval
  • Use a local OCR provider (owocr)
  • Use region mode with a smaller area
Continuous scanning affects battery life through:
  • CPU usage for OCR/compression
  • Network activity (WiFi/cellular)
  • Screen capture operations
To maximize battery:
  1. Set auto_scan_interval_seconds to 1.0 or higher
  2. Enable auto_scan_on_mouse_move
  3. Use the smallest practical scan region
  4. Consider disabling auto scan when not actively reading
If meikipop impacts game FPS:
  • Increase auto_scan_interval_seconds to 1.0+
  • Select a smaller scan region
  • Enable auto_scan_on_mouse_move
  • Use a local OCR provider
  • Disable auto scan during action sequences
Most modern systems handle auto scan mode without noticeable game impact, especially with a 0.5-1.0s interval.

Visual novels

auto_scan_mode = true
auto_scan_mode_lookups_without_hotkey = true
auto_scan_interval_seconds = 0.5
auto_scan_on_mouse_move = true
Text is static, mouse movement indicates interest in new words.

Games

auto_scan_mode = true
auto_scan_mode_lookups_without_hotkey = true
auto_scan_interval_seconds = 1.0
auto_scan_on_mouse_move = false
Text may change independently of mouse position.

Manga/images

auto_scan_mode = true
auto_scan_mode_lookups_without_hotkey = true
auto_scan_interval_seconds = 2.0
auto_scan_on_mouse_move = true
Static content, infrequent lookups, maximize efficiency.

Performance mode

auto_scan_mode = true
auto_scan_mode_lookups_without_hotkey = false
auto_scan_interval_seconds = 0.0
auto_scan_on_mouse_move = false
Maximum speed with hotkey control for powerful systems.

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Comparison: auto scan vs manual mode

How it works:
  1. You press the hotkey
  2. Screenshot is captured
  3. OCR processes the image (200-1000ms)
  4. Dictionary lookup occurs
  5. Popup appears
User experience:
  • Noticeable delay between hotkey press and popup
  • First lookup of each word always has latency
  • Lower system resource usage
  • Full control over when OCR runs
Best for:
  • Occasional lookups
  • Older hardware
  • Battery conservation
  • Metered network connections

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Troubleshooting auto scan mode

Solutions:
  1. Increase auto_scan_interval_seconds to 1.0 or higher
  2. Enable auto_scan_on_mouse_move
  3. Reduce scan region size
  4. Switch to a more efficient OCR provider
  5. Check if another application is conflicting
Diagnostic: Open Task Manager/Activity Monitor and check if the issue is:
  • Python process (OCR processing)
  • Network activity (remote OCR)
  • GPU usage (ScreenAI models)
Possible causes:
  1. Slow OCR provider (check network latency to Google)
  2. Large scan region
  3. High auto_scan_interval_seconds value
  4. Slow internet connection (try enabling compression)
Solutions:
  • Reduce auto_scan_interval_seconds to 0.0-0.2
  • Enable Google Lens compression
  • Use a smaller scan region
  • Try a local OCR provider (owocr)
Checklist:
  • ✅ Verify auto_scan_mode = true in config.ini
  • ✅ Check if you’re within the selected scan region
  • ✅ If using auto_scan_on_mouse_move, try moving the mouse
  • ✅ Ensure OCR provider is properly configured
  • ✅ Look for errors in the terminal/log output
  • ✅ Try restarting meikipop

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Tips for optimal auto scan experience

Start conservative, then optimize: Begin with a 1.0s interval and auto_scan_on_mouse_move enabled. If performance is good, gradually reduce the interval for better responsiveness.
Match settings to content: Use tighter intervals (0.0-0.5s) for dynamic content like games, and looser intervals (1.0-2.0s) for static content like manga.
Monitor your system: Keep Task Manager or Activity Monitor open during the first session to see actual resource usage. Adjust settings if usage is higher than expected.
Try hybrid mode: If automatic popups feel overwhelming, enable auto scan but disable auto_scan_mode_lookups_without_hotkey. You get the speed benefits with manual control.
Auto scan mode is experimental and may behave differently depending on your OCR provider, network connection, and system specifications. Fine-tune settings for your specific use case.

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