Will the result always be under the limit?

Almost always. If a limit is too small for the picture to remain recognisable, you get the smallest version possible and the size is shown.

Are my images uploaded?

No. Images are decoded, processed and re-encoded by your browser on your own device. They are never sent to a server, and closing the tab discards them.

Compress Image to 100 KB - Free Online Tool

JavaScript is turned off. InspireTools processes files in your browser, so the tools need JavaScript to run.

Shrink photos to under 100 KB for forms and uploads.