I built a free ringtone maker with Web Audio and FFmpeg.wasm

说明与用途

Ringtone Cropper 是一个免费的 Web 工具，允许用户快速裁剪 30 秒音频片段并导出为 Android 或 iPhone 的铃声，完全在浏览器中运行。

问题

Users need a quick way to create ringtones from any audio or video file without installing software.

结果

Ringtone Cropper provides a 30‑second ringtone creation workflow that runs entirely in the browser, preserving audio quality and avoiding server‑side storage.

工作流

• Upload audio or video file
• Select a moment on the waveform (default 30 s, presets 15/30/40 s or custom)
• Preview the selection with optional fade‑in/out and loudness normalization
• Export to MP3, M4A, M4R, or WAV using ffmpeg.wasm
• Download the file and set it as a ringtone on phone

证据

Upload an audio or video file, select a moment on the waveform, preview it, and export.

来源

The frontend is plain HTML, CSS, and JavaScript. Web Audio handles decoding and preview, while ffmpeg.wasm handles export in the browser.

来源

Optional YouTube imports take a different path: a Cloudflare Worker validates and rate-limits the request, then a container running yt-dlp retrieves the audio.

来源