Files stay on your device
Make the file you need, inside your browser.
Start with MP4 to MP3: inspect the audio track, choose practical output controls, trim the range and download the result without sending the selected file to a conversion server.
Available now
Local media conversion
Each page names its format, browser and file-size limits before processing.
What local means
The selected media is not a hidden server job.
The browser reads the file after you select it and creates a temporary result for preview and download. Compatibility still depends on the media codec and device resources, so these tools validate first and avoid unlimited-file or universal-format claims.
Normal site analytics and advertising can load separately, but media filenames, contents and conversion settings are excluded from ToolNeko tool events. See the privacy page for the site-wide policy.