Does converting lose quality?

PNG output is lossless. JPG and WebP re-encode at the quality you pick before processing.

Video loads a transcoder into the browser on first use. Larger files take longer, and later runs are quicker.

No. These tools read and process files in your browser.

Do I need to sign in?

Local tools work without an account.

Keep files under 50 MB and PDFs under 80 pages so the browser stays stable.

Convert a JPG to lossless PNG.

Or drop files here

Click to choose a file, or drop it here. Nothing is uploaded.

Adjust options if needed, then run. All work stays on this device.

Preview, then download. Nothing is kept on a server after you leave.