Audio Visualiser
Renders an audio track as a waveform, spectrogram or frequency-bar image (PNG), for artwork and thumbnails.
Drop audio to picture
Waveform, spectrogram or frequency bars, rendered to PNG at any size. These are still images — an animated visualiser video is an encoder job this tool does not pretend to be.
The file is read in this tab and never uploaded anywhere.
Feed it from
Waveform Renderer
Draws the waveform of an audio file as an image or SVG with colour and size options.
Video Editor
Assembles clips into a YouTube or Shorts upload in the browser: trim, order, transitions, a music bed and subtitles. Same-batch AI clips with hard cuts export losslessly without re-encoding.
Video Trimmer
Cuts a clip between two timestamps, copying streams without re-encoding when the cut is on a keyframe.
Video Converter
Reads MP4, MOV, WebM and MKV and writes MP4 (H.264 + AAC) or WebM (VP9 + Opus) with quality and resolution settings. When only the wrapper changes — MOV to MP4, MKV to WebM — the streams are copied untouched.
Next
These accept what this tool produces, so the result can go straight in.
Waveform Renderer
Draws the waveform of an audio file as an image or SVG with colour and size options.
Burn Subtitles
Renders an SRT, VTT, ASS or SMI file permanently into the video frames with size, position, colour and outline control, drawn with the browser’s own fonts so Korean needs nothing extra.
Video Compressor
Re-encodes to a target file size or a quality preset, stepping the resolution down when the bitrate would starve it, and shows the projected size before it starts and the actual size after.
Audio Converter
Converts between MP3, WAV, FLAC, AAC, OGG and Opus with bitrate and sample-rate settings.
Extract Audio from Video
Pulls the audio track out of a video as MP3, WAV, M4A or FLAC, or copies it without re-encoding.
Audio Trimmer
Cuts a section out of an audio file on the waveform, with fade in and fade out.