Most AI image generators default to square or landscape output, while a Pinterest pin wants a tall 2:3 frame. Uploading a square image works, but it takes up less room in the feed and leaves no space for a title. This converter puts your AI image into a 1000 × 1500 pin and lets you choose how the extra space is filled.
Blurred fill uses a soft, enlarged copy of the same image behind it, so the whole picture stays visible and the colors match. Solid fill frames the image on a color you pick. Crop fills the pin edge to edge and lets you slide to keep the best part. A title band turns the image into a pin that says what the post is about. Everything runs in your browser and the image is never uploaded.
Which fill mode to use
Use blurred fill when the whole image matters, such as a detailed illustration or a scene with a subject near the edges. Use solid color when you want a clean, gallery-style frame, and pick a color from the image so it feels intentional. Use crop when the image has plenty of empty sky, floor or background that can be trimmed without losing the subject.
A square image cropped to 2:3 loses a third of its width, so check faces, hands and text near the sides before you choose crop.
Getting AI images ready for Pinterest
If your generator lets you choose an aspect ratio, ask for 2:3 from the start and you may not need this tool at all. For images you already made, a title band helps a lot: AI art on its own often gets saved for inspiration, while a title that matches a search ("Cottage Garden Ideas") tells people why to click through.
Check the terms of the generator you used for commercial use, and add an alt text description when you upload. For text-heavy designs, the add text to image editor gives more layout options.