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Audio & video · 3 tools
Free audio & video tools
Tools for creators and musicians. Fix subtitles that drift out of sync and convert between SRT, VTT and ASS, cut a clip or make a ringtone from any audio file, and practise with a sample-accurate metronome with tap tempo and a speed trainer.
Media files are processed by your browser using the Web Audio API and plain JavaScript, so even large files never leave your computer and there is nothing to install.
Subtitle shifter & converter
SubTweak · 47 pages · 7 guides
Shift and resync subtitles, fix drift with two-point sync, convert frame rates and SRT/VTT/ASS formats, repair encoding and edit cues with video preview. Free, private.
Open subtitle shifter & converter →Audio trimmer & ringtone maker
RingTrim · 35 pages · 7 guides
Cut MP3, M4A, WAV and video audio in your browser. Add fade in/out, boost volume and export MP3, WAV or iPhone M4R ringtones. Free, no sign-up, files never uploaded.
Open audio trimmer & ringtone maker →Online metronome
BPMClick · 68 pages · 7 guides
Free online metronome with accurate timing, 20–300 BPM, any time signature, accents, subdivisions, swing, tap tempo, speed trainer and practice timer. No sign-up.
Open online metronome →