Convertio gives you 2 free conversions per day, then locks you out. FreeConvert caps at 25 conversions/day with a 1GB file limit. Both upload your files to their servers for processing. If you have 10 images to convert, 3 PDFs to merge, and a video to compress — you hit the wall fast. Browser-based tools have no such limits because there is no server to track usage.
Convertio and FreeConvert limit you because they process files on their servers — every conversion costs them compute time and bandwidth. Browser-based tools run on YOUR device using YOUR CPU. There is nothing to limit. You could convert 1,000 images and no server would notice because no server was involved.
Try Converter Tools — free, private, unlimited.
Open Converter Tools