_Last checked: August 2026._
Lolly is not a replacement for every online file converter, though it does what most people need one for: turning one file format into another - HEIC to JPG, PNG to SVG, PDF to images - without installing anything.
Where they overlap
Both convert files in a browser. The difference is where the work happens.
What the ad-funded sites offer
A very wide list of format pairs, and no software to install. Many of them are quick to reach from a search.
What Lolly does instead
The conversion runs on your own device, so the file is never uploaded to a stranger's server. There are no ads and no trackers, no sign-up, and no size cap set by someone else's bandwidth. It works offline, and the output carries no watermark or metadata of ours. See every format Lolly can open and make.
This page describes a category of site rather than one product, and names none, because the point is the same for all of them: your file does not need to leave your device to change shape.