Audio Waveform Generator
Generate a waveform image from any audio file, with a choice of colour scheme, bar resolution and transparent background.
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Category
Accessories & Calculators
Waveform and spectrogram images, thumbnail and cover-art makers, plus twelve calculators for bitrate, file size, aspect ratio and duration.
Twelve accessory utilities and calculators: waveform and spectrogram generators, thumbnail and contact-sheet builders, album-art resizing for every streaming platform, and the arithmetic tools that answer questions about bitrate, size, aspect ratio and duration.
Accessories & Calculators list
Audio Spectrum Visualizer
Generate a spectrogram with real FFT analysis — useful both as artwork and as a diagnostic for spotting lossy encoding.
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Music Cover & Album Art Resizer
Resize cover art to the exact square size each streaming platform requires, with a warning when the source is too small.
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Video Thumbnail Maker
Capture still frames from a video at even intervals, and optionally build a single contact sheet of the whole timeline.
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YouTube Thumbnail Resizer
Fit an image to the exact YouTube thumbnail size and stay inside the 2 MB upload limit, with the file size checked for you.
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Video Aspect Ratio Calculator
Work out any video's aspect ratio, then find the matching dimensions or the largest crop for a different target ratio.
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Audio Bitrate Calculator
Work out exactly how large an audio file will be at any bitrate, duration, sample rate, channel count and bit depth.
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Video Bitrate Calculator
Estimate the bitrate a video needs at any resolution, frame rate and quality level, and see what that means in storage.
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FPS Calculator
Convert between frame counts, durations and frame rates, with drop-frame warnings and delivery guidance.
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Video File Size Calculator
Estimate a video's size from its bitrate and duration — or work out the bitrate you need to fit a target limit.
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Audio File Size Calculator
Estimate an audio file's size at any bitrate, and see how many tracks fit on a CD or in a gigabyte.
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Media Duration Calculator
Total up the duration and storage of a batch of files, with playback-speed and storage projections.
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MP3 Converter
Turn WAV, FLAC, M4A, OGG, Opus or the audio track of a video into a clean MP3 at any bitrate from 64 to 320 kbps.
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MP4 Converter
Convert almost any video file into MP4 with H.264 video and AAC audio: the combination that plays on phones,…
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Image Compressor
Reduce an image's file size with a quality slider and optional downscaling, and see the real saving before you…
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Image Resizer
Resize any JPG, PNG or WebP image by width, exact dimensions, percentage or a maximum box, with the aspect ratio kept…
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