Video bench / browser first
Video tools.
Convert, sample, and inspect video and audio without an upload. Every one of these decodes the file in your own browser, so nothing is sent to a server.
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Record
Capture a tab, a window, the whole screen, your camera, or just your voice, straight to a file.
Screen Recorder
Record a tab, window, or screen to a video file in the browser, with an optional GIF.
Camera Recorder
Record a video of yourself from the webcam with a touch-up, a backdrop, a countdown, and trimming.
Voice Recorder
Record the microphone in the browser with a level meter, pause, playback, trimming, and WAV export.
Convert & sample
Turn a clip into a GIF, still frames, or a plain audio file.
Video to GIF
Turn a clip into a looping animated GIF without uploading the video.
Video Frames
Pull still frames out of a video as PNG images in one zip.
Video Screenshot
Save one exact frame from a video as a PNG at the second you choose.
Contact Sheet
Lay evenly spaced, timestamped frames from a video out on one PNG grid.
Edit & re-encode
Shrink a file, keep only the part you want, or drop the soundtrack.
Compress Video
Shrink a video locally with quality and resolution controls.
MOV to MP4
Re-record a playable MOV as MP4 locally when the browser supports MP4 recording.
Resize Video
Refit a video to 9:16, 1:1, 4:5, or 16:9 by cropping or padding.
Trim Video
Cut a clip down to the seconds you want without an upload.
Mute Video
Strip the soundtrack and download a genuinely silent copy.
Rotate Video
Turn a sideways or upside-down video the right way up without uploading it.
Video Speed
Speed a video up to 4× or slow it to a quarter, audio included, in your browser.
Burn Subtitles
Hardcode an SRT, VTT, or ASS file into a video so captions show everywhere.
Merge Videos
Join two or more video clips into one file with their sound, in your chosen order, even when their sizes differ.
Crop video
Draw a box over the frame and keep only that part of the video, free or at a fixed shape, without uploading it.
Vertical video
Turn a landscape video into a 9:16 vertical one, with a blurred background, plain bars, or a crop that fills the screen.
Loop video
Repeat a clip a set number of times, or until it reaches a length, and save it as one video with its sound.
Reverse video
Play a clip backwards, with its sound reversed too, and save it as a new video, up to a minute at a time.
Images to video
Turn photos into a slideshow video with crossfades, a slow zoom, and music, in landscape, vertical, or square.
Add audio to video
Put music or another sound on a video, replacing its own sound or mixing under it, with volume and fades.
Video Bitrate
File size, bitrate, or duration from the other two, with YouTube presets.
GIF to MP4
Convert animated GIFs to much smaller MP4 or WebM videos.
Audio
Work with a soundtrack on its own: convert it, measure and set its loudness, trim it, join several together, or lift it out of a video.
Audio Converter
Convert audio or a video's soundtrack to MP3, WAV, or Ogg Vorbis in your browser, at the quality you choose.
Vocal remover
Reduce centre-panned vocals in a stereo mix, preserve low bass, compare playback and export WAV.
Noise reduction
Reduce steady hiss or hum from a noise profile, compare the removed noise, and export cleaned WAV audio.
MP4 to MP3
Extract an MP4 soundtrack as MP3 with bitrate controls and an encoded audio preview.
M4A to MP3
Convert M4A audio to MP3 with a bitrate choice, mono option and encoded preview.
Audio Effects
Reverb, echo, EQ, speed, lo-fi, and 8D effects for any audio file, previewed live and saved as MP3 or WAV.
Slowed + Reverb
Make a slowed and reverb version of any song in your browser, as MP3 or WAV.
Nightcore
Make a nightcore or sped-up version of a song: faster and higher, with optional reverb, saved as MP3 or WAV.
8D Audio
Turn any song into 8D audio that circles your head, with HRTF panning, for headphones.
Bass Booster
Boost the bass of any audio file up to 15 dB without clipping, saved as MP3 or WAV.
Normalize Audio
Measure loudness in LUFS and normalize audio to streaming or broadcast targets, or change its volume, without clipping.
LUFS Meter
Measure integrated loudness in LUFS and true peak of an audio file, compared with Spotify, Apple Podcasts, and broadcast targets.
Audio Trimmer
Trim MP3, WAV, AAC, M4A, and OGG audio files in your browser with zero server upload.
Audio Joiner
Combine multiple audio files sequentially into a single WAV audio track.
Video to Audio
Save a video's soundtrack as an uncompressed WAV file locally.
Audio Speed
Speed audio up or down without changing the pitch, or shift the pitch.
Volume Booster
Make audio louder or quieter with a limiter that prevents distortion.
Ringtone Maker
Cut a ringtone from a song and save M4R for iPhone or MP3 for Android.
Reverse audio
Play any audio file backwards and download the reversed track as WAV, without uploading it.
Waveform image
Make a waveform picture of any audio file, in bars or a filled wave, and download it as PNG or SVG.
Voice changer
Record your voice or open a file and turn it into a chipmunk, deep, robot, alien, monster, or telephone voice.
BPM detector
Estimate an audio file's tempo, compare half-time and double-time candidates, or tap the beat.
MIDI player
Play MIDI files with track controls, a piano roll, tempo and transpose, then export the mix as WAV.
Inspect
Read dimensions, duration, and container facts straight from the file.
How browser video processing works
These tools run in your browser, so a video is never uploaded. The trade-off is speed: the browser encodes a clip as it plays it, so compressing or resizing a two-minute video takes about two minutes, and the tab needs to stay open and in front. The output is MP4 where the browser can record it (recent Chrome, Edge, and Safari) and WebM otherwise.
Making a video smaller
Lowering the resolution saves more than lowering the quality: halving the height removes about three quarters of the pixels. A 1080p screen recording shared at 720p is usually still perfectly legible. Every re-encode loses a little detail, so start from the original file rather than from something already compressed — if the result comes out larger, the source was compressed harder than the setting you chose.
If only part of a clip matters, trim it first; if the sound does not, mute it. Both reduce the file before any compression.
GIFs, frames, and audio
A GIF is limited to 256 colours per frame and stores every frame in full, so a few seconds of video can make a file of several megabytes. Video to GIF works best for short loops at a small width and a low frame rate — 480 pixels at 10–12 frames per second is a good start. For a single still, the frame extractor or video screenshot keeps full colour.
Video to audio lifts the soundtrack out of a clip; audio trimmer and audio joiner then cut or combine it.
Recording without installing anything
The screen recorder captures a tab, a window, or the whole screen; the camera recorder and voice recorder use your webcam and microphone. The browser asks for permission each time, nothing is sent anywhere, and the recording downloads as a file when you stop.