The same tools, without the upload
Most online tools work by sending your file to a server, processing it there, and promising to delete it afterwards. InstantTools runs the processing engine in your browser instead, so the file never leaves your device. Here is how that compares with the sites you already know.
The one difference behind every comparison
Every site on this page does real work, and most of them do more jobs than we do. The difference is where the work happens. On an upload-based site, your file travels to a server you do not control, gets processed there, and comes back. The site then deletes its copy on a schedule set by its own policy.
InstantTools sends the processing engine to your browser instead. The PDF, image, audio, and AI engines download to your browser and run on your own device. Your file is read from your disk, changed in memory, and saved back to your disk. No copy exists anywhere else, so there is nothing to delete and no policy to trust.
That trade has costs, and each comparison says so. Your device does the heavy lifting, so an old phone is slower on big files. Our AI tools download a model the first time you use them. And we cover fewer jobs than the biggest sites.
How we checked
On October 4, 2026, we chose a small test PDF on the Compress PDF pages of iLovePDF, Smallpdf, and PDF24 and recorded every request each page sent. The PDF carried a unique line of text, so we could spot it in any request. All three sent the whole file to a server within a second of choosing it, before we clicked anything else. The method and full results are in Where does your PDF go when you compress it online?
We have not run that test on remove.bg, TinyWow, or Convertio. Those pages describe how each service works using only its own public pages, and say so.
Our side of the claim is tested on every code change. An open-source audit loads each InstantTools file tool, gives it a file with a marker inside, and fails if any network request contains the file's bytes. You can read the code and run it against the live site yourself: no-upload-audit on GitHub. Or open your browser's developer tools, switch to the Network tab, and watch a tool work. It takes thirty seconds.
The comparisons
When an upload-based site is the better pick
We would rather you pick the right tool than pick ours. Use an upload-based site when the format is rare and we do not support it, when you need to process hundreds of files through an API, or when your device is too slow for the job and the file is nothing private. Use InstantTools when the file is a contract, a medical record, a bank statement, an ID scan, or anything else you would not hand to a stranger.