buncha/video & audio/graphic-eq

Graphic Equalizer

Or try a sample
How this works. Each slider drives a peaking biquad filter at the ISO octave centres (31.5, 63, 125, 250, 500, 1k, 2k, 4k, 8k, 16k Hz). The classic graphic-EQ shape is one-octave bandwidth (Q ≈ 1.4) — the WIDTH control widens or narrows every band at once, from 3-octave smooth tone shaping (wide) down to 1/3-octave surgical cuts (narrow). The bands are wired in series so adjacent bands overlap naturally. The spectrum bars above are sampled after the filter chain, so what you see is exactly what comes out of your speakers (or your headphones, if you're using them). You can drag the dots on the EQ curve directly to tweak each band, or use the sliders below — both update the same biquads. Bypass is a real bypass: it ramps all filter gains to 0 rather than rewiring the graph, so there are no clicks when you toggle.
Files are decoded and processed in your browser using Web Audio. Nothing uploads.

Pairs well with

AI Mastering
Auto-master a track by spectral matching it to a g
Audio Joiner
Combine multiple MP3 / WAV / M4A files into a sing
Audio Loudness Normalizer
Bring any audio file to a streaming-ready loudness
Audio Speed Changer
Speed up or slow down any audio file from 0.5× to

About Graphic Equalizer

A 10-band ISO-octave graphic EQ that actually works in the browser. Real Web Audio biquad filters with overlapping one-octave bands, a live spectrum analyzer tapped post-EQ (so you see what you hear), a real bypass for A/B compare, eight presets, master output, and MP3 / WAV export rendered through the same filter chain. No upload, no sign-in.

Everything happens on your device. Close the tab and it's gone.
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Built browser-first. Run by one developer.
Every tool runs on your device. No tracking pixels, no sign-up to start. The numbers below are pulled live from the registry.
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Powered by Claude API
Files never uploadNo tracking pixelsNo sign-up neededWorks in any modern browser
The handful of AI tools (paraphrase, summarise, blog, captions, etc.) send your prompt text to Anthropic's Claude API to do the work. Files, images, PDFs and video never leave your device. Pick the tools that fit your privacy comfort.