Sunrise Alarm Simulator – Online Gradual Light Wake‑Up
Set a wake-up time and the screen gradually brightens from dark to warm yellow. Use as a gentle alarm.
UD5 Toolkit
Find the exact direction to Kaaba using GPS, compass & sun shadow method
On Qibla Days (May 27–28 & July 15–16), the sun passes directly over the Kaaba at local noon in Mecca. At that exact moment, shadows worldwide point toward the Qibla — a perfect natural compass.
Set a wake-up time and the screen gradually brightens from dark to warm yellow. Use as a gentle alarm.
Create binaural beats by setting base frequency and beat frequency. Use headphones. For relaxation or focus. Web Audio API.
Generate cryptographic and checksum hashes for any text string. Supports MD5, SHA-1, SHA-256, and CRC32. All hashing runs locally for maximum privacy.
Input a hex color and adjust its lightness by a percentage. Get tristimulus shades for CSS. Quick and visual.
Enter a future eclipse date and approximate location to see estimated contact times. Event countdown.
Generate SHA‑1, SHA‑256, SHA‑512, and SHA‑3 digests of any text or file. Verify integrity. All in your browser.
Translate HEX colors to HSL values and adjust lightness and saturation visually. Great for creating color variations in CSS design systems.
Convert HSL and HSLA color specifications back to standard HEX codes. Useful when extracting colors from CSS preprocessors. Instant client-side conversion.
Alternates between near and far focus cues with timed breaks. Reduce digital eye strain.
Randomly generated subnetting questions. Calculate network address, broadcast, and usable range. For CCNA prep.
Select a desired effect (relaxation, focus, energy) and get a suggested essential oil blend with drop ratios. Perfect for diffusers and DIY massage oils.
Display a stylish retro flip clock or Nixie tube clock in full screen. Perfect for desk presentation or decoration. Pure CSS and JS.
Enter any hex color and find the nearest Tailwind CSS color class. Also shows the Tailwind palette shade.
Find the optimal go‑to‑sleep or wake‑up times based on 90‑min sleep cycles. Wake up between REM cycles and feel refreshed.
Apply a customizable gradient overlay to any image. Perfect for banners and social media. Download the result. Local.
Point your camera at a barcode and decode it live. Works with multiple formats. Pure JavaScript barcode detection.
Click through the TCP connection states (LISTEN, SYN_SENT, ESTABLISHED…) and see the animated transitions. Networking education.
Watch a color sequence and click the same pattern. Gets longer each round. Test and improve your working memory. All local.
Upload a screenshot or image and use the magnifying glass to pick exact colors. Get hex, RGB, and HSL. Simple.
Use your webcam to take selfies. Add a simple frame or filter, then download the picture. No upload, just fun.
Create a pure CSS countdown timer with a flipping number effect. Adjust duration and style. No JavaScript needed for display.
Overlay colored blocks and images and apply all mix‑blend‑mode values. Understand how each mode works live.
Use your camera to scan 1D barcodes (UPC, EAN, CODE128) directly in the browser. Quick and no app install. All scanning is local.
View the current time in binary (BCD) format. A stylish geek clock with dot columns. Toggle between binary and decimal labels.
Run a countdown timer that automatically repeats for a set number of laps. Great for HIIT, study sprints, or any interval work.
Every second, the background color changes to the hex code corresponding to the current time (HHMMSS). A beautiful, ever‑changing clock.
Automatically improve the contrast of dark or washed‑out photos using histogram equalization. One‑click auto‑tune. All canvas‑based.
See the current time displayed in binary and hexadecimal. Dark theme, full‑screen mode. A geeky desk decoration.
Enter two Roman numerals and add or subtract them. See the result in Roman and Arabic. A fun mental workout.
Simulate forced‑colors mode and see how your site looks. Adjust CSS system colors. Make your design accessible.