Get in touch

The cleaned file is the free file. No watermark, no trial length, no account: files up to 45 minutes. A pass adds loudness levelling and a heavier repair pass for rough recordings.

Found a bug, got a question, or an idea to make CleanGrab better? Write it below: messages go straight to the person who built the site. Leave an e-mail address if you'd like a reply; it's optional.

About CleanGrab

CleanGrab is a free tool that removes background noise, hum, echo and wind from audio recordings: no account required, no watermark, and files deleted automatically within 45 minutes. It runs on our own server, so there's nothing to install. CleanGrab is part of the ShinobiTools suite of free AI-powered browser tools.

What to include in your message

Bug report: describe the file format and what went wrong: for instance whether the noise removal made the audio worse or whether the file failed to process. A browser console error helps us fix it faster.

Feature suggestion: describe the use case: what you were trying to do and why CleanGrab didn't cover it. We read every suggestion.

Question: check the FAQ on the home page first: most common questions about supported formats and noise types are answered there.

Response time

We aim to reply within 1-3 business days when an e-mail address is provided. Messages without an e-mail are read but cannot be answered individually.

What actually goes wrong

Our own error log from the past 31 days shows what really trips people up: the single most common rejection is a recording over 45 minutes, logged 8 times, followed by uploads that simply ran slow, one chunk upload took as long as 18 seconds, and on the slowest run the cleanup step itself took 125 seconds. Of the 15 uploads we rejected in that period, only 1 failed outright during processing; the rest were stopped by the length or size limit before cleanup even started. If your message is about a failed or slow upload, mention the recording's length and rough file size: it's the fastest way for us to tell whether you hit one of these known limits or found something new.