File tools that show you what they changed

Most file tools are a button and a download. You get a file back and no way to tell whether the bookmarks survived, how much noise was actually removed, or what the conversion quietly lost. When something goes wrong you find out later, in the document, in front of someone else.

These tools are built the other way round. Each one measures the thing it is about to change, shows you the number, and lets you compare the result against the original before anything is downloaded. The merge reports which bookmarks carried and which were dropped. The noise reducer samples a passage that is only noise and tells you the level it found. The converter reports the size of every file next to the size it started at, and says plainly what it cannot recover.

Every tool here runs inside this browser tab. Files are read from your machine and never sent anywhere, which also means the tools work with no network once the page has loaded.

Each one is narrow on purpose. Where a large creative suite ships one generic feature, these pick the single task that feature does badly and do only that.