Open Kuro

Convert an image

Drop a picture and pick the format you need. It keeps its full size, and it runs in your browser, so the photo never leaves your device.

Your file never leaves this device. Everything runs in your browser.

How it works

  1. Drop a HEIC, WebP, PNG, JPG, GIF or AVIF picture.
  2. Pick JPG, PNG or WebP, and the quality for JPG or WebP.
  3. Press Convert and download the picture.

Questions

Which format should I pick?

JPG for photos you send or post: small, and opened by everything. PNG for screenshots, logos and anything with transparency: it keeps every pixel. WebP is smaller than both for the same look, and every current browser opens it, but some older apps don't.

Does the picture lose quality?

PNG keeps every pixel of what the browser read. JPG and WebP compress; at the default quality of 90 the difference is hard to see. Converting a JPG to PNG can't bring back what the JPG already lost.

What happens to the photo's metadata?

The new file has none: no camera details, no date, no location. The picture is turned the right way up first.

Does my picture get uploaded?

No. It's read and written by this page, in your browser. HEIC photos are read with libheif, which this page loads when you drop one.

Frame grabber

Save any frame of a video as a full-quality image, or let it pick thumbnails.

Video to GIF

Turn a few seconds of a video into a GIF that loops.

Image resizer

Make a picture smaller or larger, in pixels or by a percentage.

Resize a video

Turn a video into 9:16 for TikTok, Reels and Shorts, or 4:5, 1:1 or 16:9.

Crop a video

Cut a video down to the part you want to keep, at its own size.