Online Audio Equalizer for Local Files
Drop an audio file, compare EQ changes, and export locally. Free includes 3 bands and a 30-second preview; Pro unlocks all 10 bands.
Free: 3 audio uploads/day · 30-second preview · 120% boost · 3-band EQ
This page owns file-editing intent. It is for an audio file already on your device, not live YouTube, Twitch, Zoom, or other tab audio. For live playback, use the Chrome equalizer extension guide.
On the free tier, Hearably Studio accepts audio files up to 50 MB, allows three uploads per day, previews 30 seconds, exposes three EQ bands, and caps boost at 120%. Pro raises the file limit to 500 MB, removes the daily upload cap, unlocks the full 10-band EQ and boost range, and adds the current Pro export and processing controls.
The browser decodes the selected file and processes PCM locally with Web Audio nodes. The W3C specification describes BiquadFilterNode as a standard building block for tone controls and graphic equalizers. Browser codec support still varies by browser, operating system, and source file.
Local audio processing does not mean the page makes no network requests: the website loads code and assets, analytics can run, and Pro authentication or model downloads use network services. The selected audio file is not uploaded to Hearably for the EQ path.
Need the same fix elsewhere? See also Chrome Equalizer Extension Evaluation Guide, MP3 Volume Booster Online and Free Online Audio Compressor — all three use the same audio engine, tuned per platform.
What the EQ Changes—and What It Cannot Repair
Each enabled band changes a region around its center frequency. Boosting adds energy and consumes headroom; cutting can reduce a problem region without raising the whole signal. Adjacent filters overlap, so several large boosts can produce a much larger combined change than one slider suggests.
Use small moves, compare with bypass, and listen on the output devices that matter. EQ cannot restore frequencies never captured by the microphone or removed by a lossy source. It can also emphasize hiss, room noise, sibilance, or codec artifacts.
The limiter controls new sample peaks in the current DSP path, with raw synthetic results published in the browser-audio limiter benchmark. That does not guarantee transparent sound or protect against speaker and headphone overload.
How to get the best audio on Online Audio Equalizer for Local Files
Confirm the task is file editing
Use this owner for a local file. Use the extension workflow for live browser-tab audio.
Start with cuts and small moves
Large boosts consume headroom quickly and can emphasize noise or harshness.
Compare with bypass
Judge tonal balance, noise, and dynamics—not only which version is louder.
Check the current tier limits
Free has 3 bands, 30 seconds, 3 daily uploads, 50 MB, and 120% boost. Pro unlocks the full control set.
Verify codec support in your browser
The accepted filename is not proof that every browser/OS decoder supports the underlying codec.
Keep the original file
Export to a new file and retain the source so every edit is reversible.
Built for this exact use case
Truthful Free/Pro Controls
Free exposes 3 EQ bands; Pro unlocks the full 10-band interface.
Local Preview
Compare changes in the browser before exporting a new file.
Reversible Workflow
Keep the original and export a separate processed file.
Raw Limiter Evidence
Download the synthetic sample-peak benchmark as JSON or CSV.
Choose your method
Different situations call for different tools. Hearably gives you both.
Chrome Extension
Enhance audio live while you stream. The extension intercepts your tab's audio and processes it in real-time — volume boost, EQ, presets — without downloading anything.
- Streaming on Online Audio Equalizer for Local Files, Netflix, Spotify
- Video calls on Zoom, Meet, Teams
- Supported browser tabs with audio
- When you want instant, always-on enhancement
Free Online Studio
Upload an audio or video file, apply volume boost + 10-band EQ, preview in real-time, then download the enhanced WAV. Your file never leaves your browser.
- Downloaded videos or music files
- Podcast episodes you want to boost before sharing
- Voice recordings, lectures, interviews
- When you need a permanently enhanced file
Pro tip: Use a YouTube-to-MP3 tool to download the audio, then enhance it in Hearably Studio with EQ + volume boost. Perfect for offline listening, DJ sets, or sharing on social media.
Three clicks to better audio
Install
Add Hearably from the Chrome Web Store or Microsoft Edge Add-ons.
Enhance
Click the Hearably icon and tap "Enhance." Boost kicks in instantly.
Enjoy
Adjust volume, EQ, and presets on supported browser tabs.
Frequently asked questions
Is the 10-band EQ free?
No. Free exposes three bands. Pro unlocks all ten bands.
What are the free limits?
Three uploads per day, 50 MB per audio file, a 30-second preview, 120% boost, and three EQ bands.
What does Pro change?
Pro raises the file limit to 500 MB, removes the daily upload cap, unlocks the full 10-band EQ and boost range, and enables the current Pro tools.
Is my file uploaded for EQ processing?
The EQ path decodes and processes the selected file locally in the browser rather than uploading it to Hearably.
Does the page make any network requests?
Yes. Site assets, analytics, authentication, billing, and optional model downloads are separate network boundaries.
Will every audio codec work?
No universal codec guarantee is made. Decode support varies by browser, operating system, and file.
Can EQ remove all distortion or noise?
No. EQ can reshape frequency balance but cannot reconstruct missing information or clean every artifact.
How is this different from the extension?
This tool edits a local file. The extension processes supported live browser-tab audio.