Guides & Articles
Practical guides on emergency lighting, colored light science, Morse code signaling, and getting the most out of every screen.
25 Practical Uses for a Screen Flashlight
Try screen lighting for nearby reading, product photos, desk tasks, and backup light, with setups and limits for each use.
Colored Light: Screen Colors for Reading and Signaling
Choose screen colors for nearby reading, messages, and display checks, with brightness controls and practical limits.
Emergency Lighting Preparation: Torches, Lanterns, and Phone Backup
Prepare and test emergency lights, keep batteries and chargers accessible, and use phone lighting while preserving communication.
How Online Flashlights Work: Screen Color, Wake Lock, and Fullscreen
Learn how a browser flashlight uses your display, what wake lock and fullscreen do, and how to adjust hardware brightness.
How to Conserve Phone Battery During a Power Outage
Conserve phone battery during an outage with short lighting sessions, usable brightness, and connections for calls and alerts.
Red Light and Night Vision: Using a Dim Screen
Set up dim red screen light for nearby tasks during stargazing or camping, with brightness and visibility limits.
Screen Flashlight vs. LED Torch: Choosing a Light for the Task
Compare a screen flashlight and rear LED torch for nearby lighting, directional tasks, color control, and battery use.
Strobe Lights: Frequency, Uses, and Photosensitivity Precautions
Understand strobe frequency and duty cycle, browser timing limits, and photosensitivity precautions before using flashing light.
Using a Screen as a Photography Light
Position a phone or tablet screen for portrait fill, product photos, catchlights, and color accents, with brightness and timing limits.
Visual SOS and Morse Code: Patterns, Controls, and Signaling Limits
Check Morse patterns and timing, start SOS or a custom message, and understand screen visibility and flashing risks.
Ready to use the tool? Open the free online flashlight .