Question 1

Does this upload my files?

Accepted Answer

No. Every conversion runs inside your browser with WebAssembly. The app code loads once, but your image is never sent anywhere, it stays on your device.

Question 2

Is there a file size limit?

Accepted Answer

There is no upload limit, since everything runs on your device. Very large images are scaled to fit within an 8192px edge to stay inside browser memory, but a 40-megapixel photo is no problem.

Question 3

Does it work offline?

Accepted Answer

Once the page and the codecs you use have loaded, it keeps working without a connection. Nothing it does needs the network.

Question 4

How do I convert HEIC to JPG without uploading?

Accepted Answer

Drop the HEIC file, pick JPG as the output, and download. It is decoded and re-encoded locally, so the photo never leaves your machine.

Question 5

What is the difference between WebP and AVIF?

Accepted Answer

Both beat JPEG on size. AVIF usually compresses smaller at the same quality; WebP encodes faster and has wider support. The bench above compares real output sizes.

Question 6

Does converting remove my photo metadata?

Accepted Answer

Yes, by default. EXIF and GPS location are stripped on export. You can inspect the metadata first if you want to keep some of it.

Question 7

Is it really free?

Accepted Answer

Yes. No account, no trial, no upsell. There is no server to pay for, so there is nothing to charge you for.