Guitar Effect Chain Simulator - Online Virtual Pedalboard
Route your microphone input through a chain of virtual effects (distortion, reverb, delay) using Web Audio API.
UD5 Toolkit
Try different bend points & Short Circuit for wild sounds!
Click pads to connect circuit traces — combine multiple!
Hold down for extreme glitch burst!
Route your microphone input through a chain of virtual effects (distortion, reverb, delay) using Web Audio API.
Play a collection of retro 8‑bit synth pads and leads using your keyboard. Record sequences and export as WAV. Pure Web Audio API.
Trigger different vibration patterns on mobile devices. Test if your phone supports haptic feedback. Simple demo.
Connect an audio source to an Analyzer Node and display frequency and time‑domain data. Learn Web Audio visualization.
Play a simple monophonic synthesizer with your keyboard. Choose waveform, attack, decay, and filter. For music fun.
Play a sweep from 20Hz to 20kHz. Test your speakers and your hearing. Simple and effective. Web Audio API.
Mix white noise, pink noise, rain, thunder, wind, and cafe sounds. Individual volume, save presets. Relax or focus. All client‑side.
Mix multiple ambient sounds (rain, fireplace, cafe, forest) at different volumes. Create your perfect background noise. Local loops.
Load an audio file and see its spectrogram with frequency over time. Adjust resolution and color map. Discover hidden sounds.
Process audio faster than real‑time with OfflineAudioContext. Apply filters and export the result. Dev tool.
Paste text to see a live letter frequency bar chart. Helps break substitution ciphers. All local analysis.
Enter text and generate the corresponding Morse code audio beeps. Adjust speed and tone. Great for learning and practicing CW. No download.
Select functional groups to see an approximate IR absorption spectrum. Learn spectroscopy visually. All local.
Apply lowpass, highpass, and reverb to an audio source. See frequency response. Create your own guitar pedal. All local.
Complete a series of visual pattern puzzles and get a fun estimated score. Purely for entertainment. No data collected.
Change the viewport meta tag and see how a page would render at different device widths. Understand responsive basics.
Pomodoro timer with built‑in lo‑fi music playlist (synthetic). Focus and rest cycles. No copyright music; generated tones.
Experiment with the experimental Prompt API and Summarization API right in your browser. See how the on‑device AI model responds. Requires Chrome with AI features enabled.
Interactive piano showing typical vocal ranges from Bass to Soprano. Highlight your range. For choir members.
Register a periodic background sync to fetch fresh data even when the tab is closed. Understand the API and limits.
Zoom through the electromagnetic spectrum from radio waves to gamma rays. See wavelength, frequency, and applications. Static educational page.
Choose a base color and see its complementary, split‑complementary, triadic, and tetradic harmonies. Copy palettes. Local.
Pick a method, URL, headers, and body, then send an HTTP request directly from your browser. Debug APIs easily.
Hear a common bird song and choose the correct species from multiple choices. Ear training for birders.
Write a pattern and test it against URLs instantly. See which groups match. Learn the modern alternative to regex for routing. Works entirely in the browser.
Select color bands to decode a resistor's value, tolerance, and temperature coefficient. Essential for anyone working with electronics hardware.
Drop an audio file and instantly see its duration in seconds and formatted time. Read metadata without full playback.
Use the Magnetometer API to build a digital compass. See magnetic field strength and heading in real time.
Read the ambient atmospheric pressure in hPa using the Pressure Sensor API (if available). Real‑time graph.
Register a periodic background sync with a minimum interval. See the registration state and tags. Keep content fresh.