Flicker Check vs PDF Lock & Unlock

Flicker Check helps you detect and understand hidden light flicker using your device’s camera. Many light sources flicker faster than the human eye can see, which may affect visual comfort, focus, and overall viewing experience. Flicker Check makes it easy to analyze lighting conditions and better understand the lights around you. Using real-time camera analysis, Flicker Check measures light behavior and presents clear, easy-to-read results. Simply point your camera at a light source to instantly view flicker information and visual feedback. Key Features Flicker Percentage See the flicker percentage of a light source to understand how stable or unstable it is. Higher percentages indicate stronger flicker, while lower percentages suggest more stable lighting. Flicker Frequency (Hz) View the detected flicker frequency in hertz (Hz). This helps you understand how often a light source fluctuates per second. Flicker Level Classification Lights are categorized as Low, Moderate, or High flicker, making results easy to understand at a glance without technical expertise. Waveform Visualization A live waveform displays how light intensity changes over time. This visual representation helps you see flicker patterns clearly and understand how consistent a light source really is. Camera-Based Measurement No extra hardware required. Flicker Check uses your device’s camera to analyze lighting in real time. Export Data Export your results for further review or record keeping: CSV export for detailed data analysis PDF export including waveform visuals and key measurements Who Is It For? Flicker Check is useful for: Individuals sensitive to lighting Users concerned about visual comfort Professionals testing indoor lighting Anyone curious about how stable their light sources are Whether you’re checking home lighting, office environments, or different bulbs, Flicker Check provides clear insights in seconds. Simple, Clear, and Informative Flicker Check is designed with a clean interface that makes complex lighting data easy to understand. Results update in real time, helping you quickly identify changes in lighting conditions. Important Notes: ***Flicker Check is an informational tool only and is not intended for medical diagnosis or treatment.***  Measurements may vary depending on device hardware and environmental conditions. Understand your lighting. See what your eyes can’t. Flicker Check makes hidden light flicker visible.

PDF Lock & Unlock lets you securely protect your PDF files with a password or remove the password when you need access again. Everything works fully offline — your documents never leave your device. Key Features • Lock PDFs with a password • Unlock PDFs using the correct password • Fully offline — no internet, no server • Fast and lightweight • Simple and clean interface Your privacy matters. All PDF processing happens locally on your device. Ideal for protecting sensitive documents, sharing secured PDFs, or removing passwords from your own files. No subscriptions. No tracking. Just a focused PDF utility.