How to apply crossfade at start and end of audio — browser tool
- Step 1Upload your audio file — Drop your audio.
- Step 2Set fade duration and curve shape — Set start fade and end fade independently.
- Step 3Download the faded audio — Download the faded file.
Frequently asked questions
What fade duration should I use for podcasts?+
Intro fade-in: 0.5–1 second is natural. Outro fade-out: 2–5 seconds creates a smooth programme end. For music beds under dialogue, fade in over 2–3 seconds and fade out 3–5 seconds before the end to keep it subtle. Avoid very fast fades (under 0.1 s) on music as they can sound unnatural.
What is the difference between a linear and logarithmic fade?+
A linear fade reduces amplitude proportionally over time — it sounds like a straight volume knob turn. A logarithmic fade (following equal-loudness contours) sounds more natural because human loudness perception is logarithmic. Logarithmic fades are standard in professional audio production.
Can I use fades to remove clicks at the start of a recording?+
Yes — a very short fade-in (5–20ms) at the beginning of any audio file removes clicks caused by DC offset or abrupt waveform starting positions. Similarly, a short fade-out prevents any click at the final sample. This is standard practice for any audio clip.
Privacy first
All audio processing runs locally in your browser using FFmpeg compiled to WebAssembly. No file is ever uploaded — only metadata counters are saved for signed-in dashboard stats.