Apply smooth volume fades to your audio tracks. Supports fade in, fade out, or both with linear, logarithmic, exponential, and S-curve transitions. Perfect for podcast intros and outros. Everything runs locally in your browser — nothing is uploaded.
Remove vocals from any song to create karaoke instrumentals. Extract acapella tracks or get both. Perfect for DJs, content creators, and karaoke enthusiasts.
Normalize loudness across multiple audio files to broadcast-standard LUFS levels (–16 LUFS for podcasts, –14 LUFS for streaming). Podcast networks use this to unify episode volume. Everything runs locally in your browser — nothing is uploaded.
Combine multiple audio files into one continuous track. Supports crossfade between songs and automatic volume normalization. Perfect for making mixtapes, podcasts, and audiobooks.
Configure and compare webhook retry strategies — Fixed, Linear, Exponential, and Exponential + Jitter. Calculate total delays and visualize retry patterns.
Convert a podcast episode audio file into a full text transcript using AI speech recognition.
Fade In/Out lets you apply smooth volume fades to your audio tracks. Supports fade in, fade out, or both with linear, logarithmic, exponential, and S-curve transitions. Perfect for podcast intros and outros. Everything runs locally in your browser — nothing is uploaded.. It works on any device with a modern web browser.
Apply smooth volume fades to your audio tracks. Supports fade in, fade out, or both with linear, logarithmic, exponential, and S-curve transitions. Perfect for podcast intros and outros. Everything runs locally in your browser — nothing is uploaded. It runs entirely in your browser — no software installation or data uploads required.
Upload a file from your device. Drag and drop or use the file picker to select your document.
Yes. After the initial page load, Fade In/Out runs entirely on your device with no internet connection needed. All processing is done locally.
Apply smooth volume fades to your audio tracks. Supports fade in, fade out, or both with linear, logarithmic, exponential, and S-curve transitions. Perfect for podcast intros and outros. All audio processing runs locally in your browser.
Supported formats typically include MP3, WAV, OGG, M4A, FLAC, and audio tracks extracted from video files.
Quality depends on the bitrate and format you choose. Higher bitrates preserve more detail at the cost of larger file sizes.
Yes. All audio processing happens locally in your browser using WebAssembly. No data is transmitted.
Most audio operations complete in seconds. Longer files or complex operations may take a bit longer.
Audio Cutter
Trim and cut audio files online — MP3, WAV, M4A, FLAC, and OGG. Select start and end points visually on the waveform, then download the trimmed clip.
Audio Merger
Combine multiple audio files into one continuous track. Supports crossfade between songs and automatic volume normalization. Perfect for making mixtapes, podcasts, and audiobooks.