This product was not featured by Product Hunt yet. It will not be visible on their landing page and won't be ranked (cannot win product of the day regardless of upvotes).
Hey Product Hunt! 👋
I'm a musician from Berlin, and this tool was born from frustration.
Every time I finished a track, the mastering step felt like a roadblock. Professional mastering costs $50-100 per track. Online services either sound robotic or
require endless tweaking. And my DAW's built-in limiter? Let's just say Spotify wasn't impressed.
So I built what I actually needed:
**The problem I solved:**
- Streaming platforms normalize loudness differently — get it wrong and your track sounds quieter than others
- True peak limiting prevents codec distortion (that "crunch" you hear on loud tracks)
- Genre matters — Jazz needs breathing room, Metal needs punch
**What makes this different:**
- Picks settings automatically based on your genre + target platform
- BPM-synced compressor (release time follows your track's tempo)
- 8× oversampling limiter (most DAWs max out at 4×)
- No account needed, files auto-delete after 14 days
**Built with:**
- FFmpeg for audio processing
- Java/Spring Boot backend
- Web Audio API for instant preview
This is 100% free — no premium tier, no limits. Just musicians helping musicians.
I'd love to hear:
- What genres do you produce?
- Any features you'd want added?
- How does it compare to your current workflow?
Drop your tracks in and let me know what you think! 🎸
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Tagline suggestion: "Free automatic audio mastering for Spotify, YouTube & CD — no signup"
Topics: Audio, Music, Productivity, Developer Tools, Open Source
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About Free Online Audio Mastering Tool on Product Hunt
“Free Automatic Mastering Tool”
Free Online Audio Mastering Tool was submitted on Product Hunt and earned 2 upvotes and 1 comments, placing #156 on the daily leaderboard. Free online audio mastering with loudness normalization, compression, and true-peak limiting. Upload WAV, choose your platform (Spotify, YouTube, CD), and download mastered audio instantly.
Free Online Audio Mastering Tool was featured in Music (53.3k followers), Spotify (24.1k followers) and YouTube (16.9k followers) on Product Hunt. Together, these topics include over 14k products, making this a competitive space to launch in.
Who hunted Free Online Audio Mastering Tool?
Free Online Audio Mastering Tool was hunted by Oleg Tsymaenko. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
Want to see how Free Online Audio Mastering Tool stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.
Oleg Tsymaenko