Video & Audio Tools
12 free tools · no signup · runs in your browser
Record, convert, clean and analyze audio and video entirely in your browser — no upload queues, no watermarks.
Most-used in this category
Video to GIF Converter
Convert MP4 clips to GIF in your browser: pick start, duration, fps and width. Frames extract locally — the video never uploads. Free.
Online Metronome
Sample-accurate metronome with tap tempo, 2-7 beat bars, eighth/triplet/sixteenth subdivisions and accent on the downbeat. Free, no install.
Online Guitar Tuner
Tune guitar, ukulele or bass by ear or with your microphone: live cents display, reference tones, works in any browser. Nothing is recorded.
Online Voice Recorder
Record audio in your browser with pause, live level meter and one-click download. No upload, no account, no time limit. Free forever.
Slowed + Reverb Maker
Make slowed + reverb versions of any song: speed dial, hall reverb, offline render to WAV — the TikTok effect, computed entirely on your device.
Audio Silence Remover
Automatically detect and remove silence from audio files with a threshold you control — for podcasts and voice memos. Free.
SRT to Text Converter
Strip timestamps and sequence numbers from SRT subtitle files and get clean paragraphed text. Runs in-browser. Free.
M4A to MP3 Converter
Convert M4A voice memos and AAC audio to universal MP3 with bitrate control — decoded locally via WebAudio. Free.
MKV to MP4 Converter
Convert MKV to MP4 in your browser where codecs allow — with a smart fallback re-encode. Big files handled locally. Free.
MOV to MP4 Converter
Turn iPhone QuickTime MOV files into MP4 for editors and players that need it — remux when possible, locally. Free.
MP3 Volume Booster
Boost quiet MP3s or normalize a whole batch to one loudness, with clipping protection and A/B preview. All local. Free.
Tone Generator
Generate pure tones, frequency sweeps and noise in your browser — for hearing tests, room acoustics and tuning. Free.