{"$schema":"https://toolsly.tools/schemas/tool-manifest-v1.json","generated":"2026-05-20T20:47:38.122Z","discovery":{"catalog":"https://toolsly.tools/tools.json","llmsTxt":"https://toolsly.tools/llms.txt","sitemap":"https://toolsly.tools/sitemap.xml"},"relatedTools":[{"slug":"mp3-to-wav","name":"MP3 to WAV","url":"https://toolsly.tools/mp3-to-wav"},{"slug":"mp3-to-ogg","name":"MP3 to OGG","url":"https://toolsly.tools/mp3-to-ogg"},{"slug":"mp3-to-flac","name":"MP3 to FLAC","url":"https://toolsly.tools/mp3-to-flac"},{"slug":"mp3-to-aac","name":"MP3 to AAC","url":"https://toolsly.tools/mp3-to-aac"},{"slug":"mp3-to-m4a","name":"MP3 to M4A","url":"https://toolsly.tools/mp3-to-m4a"},{"slug":"mp3-to-opus","name":"MP3 to Opus","url":"https://toolsly.tools/mp3-to-opus"},{"slug":"wav-to-mp3","name":"WAV to MP3","url":"https://toolsly.tools/wav-to-mp3"},{"slug":"ogg-to-mp3","name":"OGG to MP3","url":"https://toolsly.tools/ogg-to-mp3"}],"kind":"converter","slug":"audio-trimmer","name":"Audio Trimmer","description":"Cut a clip from an audio file — MP3, WAV, OGG, FLAC, M4A, AAC.","longDescription":"Crop the part of an audio file you actually want. Enter a start and end time — either in seconds (\"30\"), MM:SS (\"1:15\"), or HH:MM:SS (\"0:01:15\") — and download just that slice. Leave the end blank to cut from the start through the end of the file, or use \"+30\" to mean \"30 seconds from the start\". By default we copy the audio stream losslessly with no re-encoding, which is instant but cuts on container boundaries — if you need sample-accurate cuts, pick MP3 or WAV in the format dropdown to force a re-encode. Everything runs in your browser via ffmpeg.wasm; the file never leaves your device.","category":"audio","categoryName":"Audio","keywords":["audio trimmer","mp3 cutter","mp3 trimmer online","trim audio online","cut mp3","audio editor online","audio cutter","wav trimmer","trim mp3 online","free mp3 cutter","online audio trimmer","audio clip cutter","mp3 splitter"],"url":"https://toolsly.tools/audio-trimmer","runsOn":"client","multiple":false,"batch":false,"input":{"type":"file","extensions":[".mp3",".wav",".ogg",".flac",".m4a",".aac"],"mimeTypes":["audio/mpeg","audio/mp3","audio/wav","audio/x-wav","audio/ogg","audio/flac","audio/x-flac","audio/mp4","audio/x-m4a","audio/aac"]},"output":{"type":"file","extension":".mp3","mimeType":"audio/mpeg"},"options":[{"type":"text","key":"start","label":"Start time","defaultValue":"0","placeholder":"0  or  1:15  or  0:01:15","help":"Seconds, MM:SS or HH:MM:SS. Defaults to the beginning of the file."},{"type":"text","key":"end","label":"End time","defaultValue":"","placeholder":"leave blank for end of file, or +30 for 30s from start","help":"Same format as start. Leave blank to cut through the end. Prefix with \"+\" to mean \"this many seconds after start\" (e.g. \"+30\")."},{"type":"select","key":"format","label":"Output format","defaultValue":"match","choices":[{"value":"match","label":"Match input (fast, lossless cut)"},{"value":"mp3","label":"MP3 (sample-accurate, re-encoded)"},{"value":"wav","label":"WAV (sample-accurate, uncompressed)"}],"help":"Match-input copies the audio stream — fast and lossless, but cut points snap to the nearest frame boundary. Pick MP3 or WAV for precise cuts."}],"invocation":{"webUi":"https://toolsly.tools/audio-trimmer","api":null,"notes":"Currently runs client-side in the user's browser. Drop a file on the UI at `webUi` and download the converted result. A remote MCP/REST API is planned."}}