UD5 Toolkit
Screen Recorder - Online Record Browser Tab & Download WebM
Record your screen, application window, or browser tab directly using the Screen Capture API. Download as WebM. All local.
Multimedia Tools - Audio & Video
99+ toolsLyrics Finder - Online Song Lyrics Search Tool
Enter a song title and artist to find lyrics using public APIs. Quick preview and copy. A lightweight tool for music lovers.
Random Animal Soundboard - Online Hear Real Calls
Click buttons to play real animal sounds: lion roar, bird tweet, dolphin click. Studio recorded. No load.
Audio Duration Viewer - Online Get Length Without Player
Drop an audio file and instantly see its duration in seconds and formatted time. Read metadata without full playback.
Live Sound Frequency Detector - Online Audio Analyzer
Use your microphone to detect the dominant frequency of ambient sounds. Visualize the spectrum. Local Web Audio.
Audio/Video Sync Tester - Online Lip Sync Check
Load a video and visually check if audio aligns with lips. Use frame‑by‑frame stepping. Debug playback issues.
MIDI Note to Frequency Converter - Online Music Tuning
Enter a MIDI note number (0–127) or a musical note name and get the exact frequency in Hz. Piano keyboard picker.
Drum Pattern Sequencer - Online Create Beats & Play
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.
Text to Guitar Tablature Converter - Online ASCII Tab Maker
Enter notes or chords on a virtual fretboard and generate ASCII tablature. Quick way to share musical ideas.
Audio Converter - Online Convert WAV MP3 OGG Locally
Convert audio files between popular formats like WAV, MP3, and OGG directly in the browser. No upload, fast encoding using WebAudio and ffmpeg wasm.
Voice Pitch Chart - Online Soprano to Bass Reference
Interactive piano showing typical vocal ranges from Bass to Soprano. Highlight your range. For choir members.
Audio Silence Remover - Online Strip Quiet Parts
Remove silent parts from an audio recording. Useful for podcasts and lectures. Set threshold and minimum silence duration.
WAV Oscilloscope - Online Visualize Audio Waveform & Spectrum
Load a WAV file and see its real-time oscilloscope trace and frequency spectrum. Zoom and pan. Pure frontend.
Audio Pitch Shifter - Online Change Key Without Speed
Shift the pitch of any audio clip by semitones without affecting playback speed. Perfect for music transposition. Local Web Audio.
Lo‑Fi Music Player - Online Focus & Study Beats
Play a selection of local lo‑fi tracks (embedded). Simple UI with play/pause. No copyright issues. Stay focused.
Video Speed Controller - Online Slow Motion & Timelapse
Play any video at a custom rate (0.25x to 4x) without audio pitch change. Save the playback speed as a link. Local.
ImageDecoder API Demo - Online Progressive Decode
Decode an image progressively using the ImageDecoder API. See partial results and metadata. Modern alternative to <img>.
SRT Subtitle Creator - Online Add Timestamps
Create .srt subtitle files manually by adding lines and setting times with a simple player. Download the result. Local.
Instant Image Slideshow - Online Local Photo Player
Select a folder of images and start a full‑screen slideshow right in your browser. Adjust interval and transition. No upload.
Lottie Animation Previewer - Online JSON Player
Paste Lottie JSON code or upload a .json file and see the animation play. Control speed and loop. Perfect for developers.
WebCodecs Video Frame Reader - Online Decode & Display
Decode individual video frames from a local file using the VideoDecoder API. Step through frames. Cutting‑edge browser feature.
Audio to Base64 Converter - Online Embed Sound in HTML
Encode short audio clips into Base64 data URIs for direct embedding in HTML5 <audio> tags. No external files needed.
Audio Waveform Visualizer - Online See Your Sound
Visualize audio in real time from your microphone or uploaded audio file. See the waveform dance. Uses Web Audio API locally.
Karaoke Text Sync Tool - Online LRC Lyric Generator
Paste lyrics and tap while the song plays to embed timestamps. Export as .lrc file for music players. All in browser.
Online Metronome - Precise Beats per Minute & Time Signature
A precise online metronome with adjustable BPM, beat emphasis, and time signature. Works offline. Essential for musicians.
Audio to GIF Waveform - Online Animated Sound Visualizer
Upload an audio clip and generate an animated GIF of its waveform dancing. Shareable sound snippet. Canvas magic.
Speaker Test Tones - Online Left/Right Channel & Sweep
Play left‑only, right‑only, and frequency sweeps to test your speakers or headphones. Quick audio check.
Speech Synthesis Demo - Online Text to Voice with Controls
Write text and pick a voice, rate, and pitch to test your browser's speech synthesis capabilities. No download.
Morse Code Ringer - Online Custom SMS Alert Pattern
Create a custom vibration or beep pattern from a short Morse code message. Design unique ringtone ideas.
Custom Audio Equalizer - Online 10‑Band Adjust & Presets
A 10‑band graphic equalizer applied to any audio file or mic input. Save presets. All processing via Web Audio API.
Ukulele Tuner - Online GCEA Standard Tuning Notes
Play reference pitches for standard ukulele tuning. Also works for baritone and other variations. Simple and local.
WAV Header Viewer - Online Inspect Audio Format
Drop a WAV file and see its full header: sample rate, bit depth, channels, and chunk structure. Raw bytes explained.
Audio Sample Rate Converter - Online Resample WAV/MP3
Change the sample rate of an audio file (e.g., 48kHz to 44.1kHz) without leaving the browser. Ideal for podcast prep.
Voice Pitch Detector - Online Live Mic Frequency
See the fundamental frequency (pitch) of your voice in real time using auto‑correlation. For singers and speech training. No upload.
Sound Wave Extractor - Online Isolate Vocals or Instrumental
Simple phase cancellation tool: load a stereo track and attempt to remove center‑panned vocals. Not perfect, but fun to experiment.
Beat Sync Tester - Online Tap Tempo & BPM Counter
Tap any key to the beat and get the BPM (beats per minute). Useful for DJs, musicians, and running. Simple and accurate.
Circuit Bending Simulator - Online Glitch Sound Generator
Create experimental glitch noises by toggling virtual circuit bend points. No real electronics harmed. Fun noise toy.
Online Piano Keyboard - Play & Record Simple Melodies
Play a virtual piano keyboard using mouse or computer keys. Sustain and octave control. Record and play back your tune.
Online Spectrogram Viewer - Audio Frequency Visualizer
Load an audio file and see its spectrogram with frequency over time. Adjust resolution and color map. Discover hidden sounds.
Retro Synth Pad - Online 8‑bit Sound Generator
Play a collection of retro 8‑bit synth pads and leads using your keyboard. Record sequences and export as WAV. Pure Web Audio API.
Piano Chord Finder - Online Visual Keyboard & Notes
Click a root key and chord type (Maj, min, 7th) to see the notes highlighted on a piano keyboard. Learn chords fast.
Audio to MIDI Converter - Online Transcribe Melody
Analyze a monophonic audio recording and convert the pitch into a MIDI file. Perfect for capturing musical ideas. Client-side.
Photo Montage (Ken Burns) - Online Animated Effect
Create a slow, zooming and panning photo montage (Ken Burns effect) from your images. Export as WebM video. Canvas.
Color to Pitch Synaesthesia - Online Hear a Hex Code
Enter a hex color and hear a tone mapped to its hue. Explore the connection between color and sound. Fun perceptual experiment.
Online Tone Generator - Audio Frequency & Sound Wave Tool
Generate pure audio tones of specific frequencies (Hz). Adjust waveform type (sine, square, sawtooth). Ideal for audio testing and science experiments.
Video Multi‑Frame Grabber - Online Extract Still Strips
Take multiple evenly spaced screenshots from a video and combine them into a single filmstrip image. Local canvas.
Audio Trimmer - Online Cut MP3 WAV Locally
Select a part of an audio file and trim it to the selection. Playback preview. Download the cropped audio. No upload.
AudioContext Sandbox - Online Web Audio API Visual Programming
Connect oscillators, gain nodes, and filters with a visual graph. Hear the result in real time. Learn Web Audio interactively.
Image Sequence to GIF - Online Animated GIF Maker
Combine multiple static images into a single animated GIF. Adjust frame delay and order. No upload, in‑browser encoding.
ASCII Video Player - Online Convert Webcam to Text Art Live
Turn your webcam feed into real‑time ASCII art. Adjust density and character set. Fun for streams and demos. No upload.
Color Noise Generator - Online White Pink Brown Blue Violet
Play infinite sound loops of white, pink, brown, blue, and violet noise. Volume control. Help focus or mask tinnitus.
Video Color Filter - Online Apply Tint to Video in Browser
Apply real-time CSS filters or canvas effects to a video and download the processed output. Experiment with video post-processing locally.
Video Screenshot Grabber - Online Capture Frame from Video
Load a video file and grab any frame as a still image. Navigate frame by frame. Download the snapshot. All done on your device.
Audio Volume Normalizer - Online Loudness Equalizer
Adjust an audio file's volume to a target loudness level (e.g., -14 LUFS). Prevent clipping. Works in the browser.
Voice Memo Recorder - Online Record & Download Audio
Record audio directly from your microphone and download it as a WAV file. Perfect for quick notes. No upload, fully offline support.
Audio Visualizer Bars - Online Live FFT Spectrum
Play an audio file or use mic to see real‑time frequency bars. Choose colors. Great for music videos. Canvas.
Ambient Sound Mixer - Online Rain, Fire & Coffee Shop
Mix multiple ambient sounds (rain, fireplace, cafe, forest) at different volumes. Create your perfect background noise. Local loops.
YouTube Thumbnail Downloader - Online Get Video Thumbnails
Extract the thumbnail image for any YouTube video by pasting its URL. Download in multiple resolutions (HD, SD). Simple and fast.
Video Metadata Viewer - Online Check Codec, Bitrate & Size
Drop a video file and instantly see its container format, codec(s), resolution, duration, and bitrate. Browser‑based, no upload.
Web MIDI Keyboard Tester - Online Visual Note Display
Connect your MIDI keyboard and see pressed notes visually on a piano roll. Check velocity, channel, and aftertouch. No DAW needed.