Waveform Renderer
Draws the waveform of an audio file as an image or SVG with colour and size options.
Drop audio to draw
Any format the browser can decode, plus WAV at every bit depth through our own reader.
The file is read in this tab and never uploaded anywhere.
Feed it from
Audio Trimmer
Cuts a section out of an audio file on the waveform, with fade in and fade out.
BPM Detector
Estimates a track’s tempo in BPM by onset autocorrelation, with a confidence score and alternative candidates.
Audio Visualiser
Renders an audio track as a waveform, spectrogram or frequency-bar image (PNG), for artwork and thumbnails.
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.
Next
These accept what this tool produces, so the result can go straight in.
Loudness Normaliser
Measures integrated loudness and true peak, then normalises to a target LUFS such as -14 or -16.
Audio Trimmer
Cuts a section out of an audio file on the waveform, with fade in and fade out.
Audio Visualiser
Renders an audio track as a waveform, spectrogram or frequency-bar image (PNG), for artwork and thumbnails.
PNG Compressor
Quantises the palette and rewrites the deflate stream to shrink a PNG without changing its dimensions.
Base64 Encoder & Decoder
Encodes and decodes Base64 and Base64URL for text or files, handling UTF-8 correctly.
Background Remover
Keys out a flat or single-colour background in OKLab and returns a transparent PNG, with a brush for fixing the edges.