Audio BPM Detector – Find Tempo of an Uploaded Track
Upload an MP3 or WAV file and get an estimated beats per minute using onset detection. DJs and musicians can quickly catalog track tempos.
UD5 Toolkit
Upload an MP3 or WAV file and get an estimated beats per minute using onset detection. DJs and musicians can quickly catalog track tempos.
Lay down a beat on a grid sequencer for kick, snare, and hi-hat. Play, loop, and adjust tempo. All sound via Web Audio API.
Load a video and visually check if audio aligns with lips. Use frame‑by‑frame stepping. Debug playback issues.
Choose your tea type and start a precise steeping timer with color‑changing background. Never over‑steep again.
Track up to 5 habits with a visual chain. Tap to mark day as done, see longest streaks. Data saved in your browser. Inspired by 'Don't break the chain' method.
Compare all CSS easing presets side by side on a bouncing ball. See which curve fits your UI animation.
Convert WAV audio files to MP3 directly in your browser using a built‑in codec. Choose bitrate and quality. No upload.
Apply compression and limiting to an audio file with threshold, ratio, attack, and release controls. Improve loudness. All local.
Log daily sleep to see cumulative sleep debt or surplus over weeks. Visualizes chronic sleep loss trends. Stores data locally in your browser only.
Start/stop timer per project to log hours. See daily and weekly totals. Data stays in localStorage. Export summary as CSV. No account needed.
Translate text into semaphore flag positions and decode semaphore back to letters. Interactive animated flags. For scouts and maritime fans.
Log the hours you slept each night and rate the quality. See a weekly bar chart. Local storage.
Enter a domain and see its SSL certificate details: issuer, validity dates, and chain. Client‑side fetch.
Use a coin for scale and log the size of swelling after an insect sting over time. Detect allergic progression.
Change audio files between MP3, WAV, FLAC, and OGG. Choose codec and bitrate. Works completely offline in the browser.
Check which cipher suites a website supports and identify weak or outdated ones. Quick security audit from your browser.
Inspect any website's SSL/TLS certificate details: issuer, expiry date, subject, and SANs. Verify certificate chains. All checks are private and require no server upload.
Paste a Bitcoin, Ethereum, or other crypto wallet address and quickly verify its format and checksum. No connection to blockchain.
Set your desired retirement date and see a live countdown of remaining days, hours, minutes. Totally motivating.
Display striped patterns that can cause visual distortion. Learn about visual stress. Switch colors.
Convert English words into their International Phonetic Alphabet (IPA) representation. For pronunciation learning. Local.
Follow an animated circle that guides you through the 4‑7‑8 breathing pattern. Inhale 4s, hold 7s, exhale 8s. Counts cycles and provides haptic cues.
Convert numbers between binary, octal, decimal, hex, and any custom base up to 36. With live preview of all bases.
Visualize the probability distribution of dice rolls as a color‑coded heatmap. For any NdM combination. RPG strategist's dream.
Validate a DNSSEC chain by entering DS and RRSIG records. Verify that signatures match. Educational. Local algorithm.
Paste raw email headers and see authentication results (SPF, DKIM, DMARC) in a readable table. Find spoofing attempts.
Hold a gentle smile for a set duration while looking at a calming image. A simple, evidence‑based mood booster based on facial feedback hypothesis.
Click a metal ion to see the characteristic flame color and wavelength. Useful for analytical chemistry reference.
Convert JSON‑LD structured data into Turtle (TTL) notation. For semantic web and linked data developers. Client‑side.
Type a negative thought and see which cognitive distortion it matches. Get a suggestion for reframing. Self-help tool.