Every tool on UniversalConverter is free because one short ad runs before each download or conversion — that is the whole business model: the tools are free, full stop, and the ad is what pays for them. Your browser is currently blocking those ads, so the tools can't run.
Open your ad blocker and choose “Don't block on this site” / pause it for this domain.
If you use a strict browser or DNS filter, allow googlesyndication.com here.
Come back and tap the button below — we'll check again instantly.
Nothing is tracked about you personally — the check happens entirely in your browser.
Add clean one-second fades to the start and end of any audio file — no clicks, no abrupt cuts.
The Fade Audio In / Out is one instrument in the widest bench in the fleet: on UniversalConverter, a file can arrive by link or upload and leave as video, audio, image or document — the universal bar and the full matrix are here precisely so no job needs a second site.
100% freeNo sign-upNo watermarkFiles auto-deletedWorks on any device
📂
Tap to choose a file or drag & drop it here
Audio files · deleted right after processing
A short ad is shown before processing — it keeps this tool free. No sign-up, no watermark.
Advertisement
How to use the fade audio in / out
Upload your file — drag & drop it or tap to browse.
Set any options, then hit the button.
Watch the short ad — your finished file downloads instantly.
Why people pick this over other converters
No account, ever. Most big converter sites push sign-ups and paid tiers for basic jobs. Here the tool just works.
No watermarks and no job counters on standard tools — fair-use rate limits keep things fast for everyone — and a generous 200 MB upload limit.
Private by design: your file is processed in a temporary folder and deleted the moment your download finishes. Nothing is stored or shared.
Fast: this page is a fraction of the size of the ad-heavy alternatives, and the same account-free toolbox has 130 other tools when you need them.
FAQ
Is this really free?
Yes — completely. A short ad before processing keeps every tool free; no account, subscription or credits are ever required.
What happens to my file?
It is processed in a temporary folder and deleted the moment your download finishes. We never store, view or share uploads.
Do I need to install anything?
No. Everything runs in your browser session against our servers — any phone, tablet or computer works.