Audio Cutter Online & Ringtone Maker

About Audio Cutter & Ringtone Maker

Audio Cutter Online is a high-performance, studio-grade browser tool that allows you to easily cut, trim, split, and edit audio files without installing any software. Whether you want to make an attractive custom ringtone for your smartphone, trim unwanted silence and background noise from a voice track, extract favorite chorus sections from a song, or fine-tune sound effects for video editing, this tool delivers pinpoint accuracy down to a tenth of a second.

Powered 100% by the modern Web Audio API and client-side LAME MP3 / WAV PCM encoders, all waveform rendering, audio processing, fade transitions, and file exports occur entirely within your local web browser. Your sensitive audio files and personal recordings are never transmitted across the network or saved on remote servers, providing instant processing speeds, zero bandwidth costs, and uncompromising privacy.

Key features

• Smooth 60FPS Interactive Waveform Visualize sound peaks and acoustic dynamics with real-time waveform graphics. Easily drag start and end handles, reposition the selection window, or zoom up to 8x for microsecond-precise trimming.
• Dual Trimming Modes (Keep vs Cut Out) Choose between Trim mode (keeps only the selected audio segment) and Cut Out mode (deletes the selected region and stitches the remaining audio together seamlessly).
• Integrated Fade In & Fade Out Curves Apply smooth volume fade-in at the beginning and gentle fade-out at the end to eliminate abrupt clicks, pops, and sudden track cuts, creating professional-grade ringtones and music clips.
• Live Volume, Speed, Pitch & EQ Controls Boost audio volume up to 300%, adjust playback speed from 0.25x to 3.0x, shift pitch by -12 to +12 semitones, and apply Equalizer presets like Bass Boost and Vocal Enhancer.
• 100% In-Browser Privacy & Multi-Format Export Export crystal-clear 320 kbps MP3 or uncompressed 16-bit PCM WAV. All processing takes place locally inside your browser memory with zero file size limits and complete data confidentiality.

How to Cut and Trim Audio Online

Follow these straightforward steps to cut, trim, and download your edited audio or custom ringtone in seconds.

1. Upload or drag your audio file Click "Choose Audio File" or drag and drop your audio or video file (MP3, WAV, AAC, M4A, OGG, FLAC, MP4, etc.) into the dropzone. You can also click the sample test button to explore features instantly.
2. Set start and end cut points Drag the cyan start and end markers on the interactive waveform, or use the millisecond digital stepper buttons to specify precise cut boundaries.
3. Apply audio effects and adjustments Toggle Fade In or Fade Out curves, customize volume amplification, adjust playback speed or musical pitch, and select an Equalizer preset if desired.
4. Preview your edited audio Press Spacebar or click the Play button to listen to your trimmed selection with all active effects and volume adjustments applied in real time.
5. Export and download Select your desired output format (MP3 or WAV) and click Save to instantly encode and download the finished audio file directly to your device.

Usage tips

• For mobile ringtones, keep the trimmed selection between 20 and 40 seconds and enable both Fade In and Fade Out for a natural, pleasant acoustic transition.
• Use the Zoom In tool (+ button) on the top right of the waveform to expand the display up to 8x, making it easy to align cut markers with quiet pauses or musical beats.
• You can drag the highlighted region between markers to slide the entire selected duration across the track without altering its length.
• Because all audio decoding and encoding run locally on your device CPU, keeping the browser tab active ensures maximum encoding performance.

Frequently asked questions