How it works
Add one image or a whole batch. Vimorby checks each file by reading its actual bytes, not just its name, then shows only the output formats your browser can genuinely produce.
Choose a format and Vimorby decodes, re-draws and re-encodes each image locally using your browser's built-in image codecs inside a background worker, so the page stays responsive.
Everything happens inside your browser tab. Your image is never uploaded, so it is never stored on a server.
Which format should I pick?
JPG is best for photos that need to open everywhere. PNG is lossless and keeps transparency, which suits logos, screenshots and graphics. WebP usually gives smaller files than both at similar quality and is supported by all modern browsers.
AVIF appears only if your browser can actually encode it. Most browsers can display AVIF but cannot create it yet, so Vimorby hides it rather than pretending.