UD5 Toolkit
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.
Audio Trimmer & Splitter
100% Local Processing — No file uploads
MP3
WAV
OGG/AAC/FLAC
Privacy Safe
Drop your audio file here
or click to browse — Max 200MB
Frequently Asked Questions
No. This tool processes everything locally in your browser using the Web Audio API. Your files never leave your device — ensuring complete privacy and security. This also means it works offline after the page loads.
The tool exports audio as 16-bit PCM WAV format — a lossless, uncompressed format compatible with virtually all audio players, DAWs, and editing software. WAV ensures no quality loss during the trim/split process. Your original MP3 or compressed file is decoded and re-encoded to WAV for precise frame-accurate cuts.
Trim mode: Select a single range (start & end) and either keep that portion or remove it. Ideal for cutting intros, outros, or unwanted sections.
Split mode: Add multiple split markers to divide audio into several segments. Each segment can be previewed and downloaded individually — perfect for splitting long recordings, podcasts, or albums into tracks.
Split mode: Add multiple split markers to divide audio into several segments. Each segment can be previewed and downloaded individually — perfect for splitting long recordings, podcasts, or albums into tracks.
The tool supports all audio formats that your browser can decode. This typically includes MP3, WAV, OGG, AAC, FLAC, and M4A. For best compatibility across all major browsers (Chrome, Firefox, Safari, Edge), MP3 and WAV are recommended. If a file fails to decode, the tool will display an error message.
Cuts are sample-accurate — the highest precision possible in digital audio. The tool operates at the sample level (e.g., 44,100 samples per second for CD-quality audio), meaning there's zero quality degradation at cut boundaries. You can manually type exact timestamps (down to milliseconds) for surgical precision.
Absolutely! The tool is fully responsive and touch-optimized. You can drag handles on the waveform with your finger, use time input fields for precise values, and all buttons are sized for comfortable tapping. Works on iOS Safari and Android Chrome.
MP3 is a compressed format that sacrifices some audio data for smaller file size. WAV is uncompressed and lossless, preserving full audio fidelity. When you trim an MP3 and export as WAV, the output contains the full uncompressed PCM data of the selected portion — which is naturally larger. This is normal and ensures no quality loss from re-compression.
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 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.
Online Voice Recorder & Downloader - Mic to WAV
Record audio from your microphone and save as WAV file. Visual waveform while recording. Simple and privacy-friendly; audio stays in your browser.
Morse Code Audio Practice – Online Random Character Group
Play random Morse characters at configurable speed. Learn with Koch or Farnsworth method.
Spelling Test Practice - Online Audio Dictation & Typing
Hear a word spoken by browser TTS and type the spelling. Choose difficulty or paste your own list. Great for kids. Local only.
Swim Pace Calculator - Online 100m / 100yd Time Predictor
Calculate swim pace per 100m or 100yd based on total time and distance. Predict race times. For pool and open water swimmers.
Team Randomizer - Online Split People into Groups Fairly
Enter names and number of teams to generate random balanced groups. Quick way to form teams for games, projects, or icebreakers.
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.
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.
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.
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.
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.
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.
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.
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 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.
Random Team Generator - Online Split Names into Groups
Paste a list of names and split them into a specified number of random teams. Perfect for sports and classrooms.
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.
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.
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.
Bird Sound Reference - Online Listen & Identify Common Calls
Browse a collection of common bird calls. Play short audio samples to identify birds you hear. Educational static data.
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.
Text to Morse Code Decoder - Online CW Translation Tool
Translate text to Morse code with audio playback. Adjust speed and tone. An educational tool for amateur radio enthusiasts. Works offline.
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.
Morse Code Audio Player - Online CW Practice & Play
Enter text and generate the corresponding Morse code audio beeps. Adjust speed and tone. Great for learning and practicing CW. No download.
Tip Pool Calculator - Online Fair Share Splitter for Staff
Fairly distribute pooled tips among staff based on hours worked or points. Customizable percentages. All calculations local and private.
PDF Page Extractor - Online Split & Extract Pages Locally
Extract specific pages or split a PDF document into multiple files. Works entirely in the browser; your documents never leave your computer.
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.
Image Splitter - Online Cut Photo into Grid or Strips
Split an image into equal grid parts or horizontal/vertical strips. Useful for Instagram carousel posts or puzzle creation. Everything runs in your browser.