Bumper Builder – Free Web App
🎧 Bumper Builder
Upload → Trim / Fades / Gain →
Apply Timing & Render
→ Download WAV.
📁 Upload
Intro
Drag/drop or click
Episode
Drag/drop or click
Outro
Drag/drop or click
⏰ Intro/Outro: Trim + Fades + Gain
Intro
Fade In
Fade Out
Apply Fades
Gain (dB)
0.0 dB
Apply Gain
Reset
Normalize Peak
Selection: —
▶️ Play
⏹️ Stop
Trim from start (s)
Trim from end (s)
✂️ Apply Trim
🔄 Reset
📥 Download Edited Intro
Outro
Fade In
Fade Out
Apply Fades
Gain (dB)
0.0 dB
Apply Gain
Reset
Normalize Peak
Selection: —
▶️ Play
⏹️ Stop
Trim from start (s)
Trim from end (s)
✂️ Apply Trim
🔄 Reset
📥 Download Edited Outro
✂️ Episode Editor
▶️ Play
⏹️ Stop
🔍 Zoom In
🔎 Zoom Out
Gain (dB)
0.0 dB
Apply Gain
Reset
Normalize Peak
Selection: —
Trim from start (s)
Trim from end (s)
✂️ Apply Trim
🔄 Reset
⚙️ Advanced Timing
✅ Apply Timing & Render
Episode Start (s)
Outro Offset (s)
Episode start is absolute. Outro offset may be negative for overlap/fade-in.
🎬 Episode Preview
▶️ Play
⏹️ Stop
📦 Export
Downloads in WAV format
Title
📥 Download WAV
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