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AI Image Extender: Expand a Photo to Any Aspect Ratio

Upload a photo, pick the shape you need, and GPT Image 2.5 fills the new space around it. Your original stays in the middle, unchanged.

  • 6 credits a run · GPT Image 2.5
  • Original pixels pasted back in the center
  • 1:1 · 4:5 · 16:9 · 9:16 · custom
  • New edges match the light and texture
4:516:9
A tight crop opens into a wide frame — the lake stays where it was.

Better than stretching, cropping or adding bars

Squeezing a vertical photo into a wide frame distorts it, cropping throws away what you wanted to keep, and black bars look like a mistake. Extending adds believable scenery where there was none.

  1. 01

    Your photo is pasted back untouched

    After the model draws the new edges, your original pixels are placed back over the center, so faces, products and text inside the old frame are not redrawn.

  2. 02

    Edges that match

    The model continues the sky, floor, water or wall it finds at the border, and the new ring is color-matched to your photo to hide the join.

  3. 03

    Common ratios in one tap

    Presets for 1:1, 4:5, 16:9 and 9:16, plus a custom width-to-height ratio for anything else.

  4. 04

    An optional hint

    Leave the prompt empty and the scene simply carries on. Type a short hint, like "more sandy beach" or "plain white studio backdrop", when you want something specific.

What people extend

Typical jobs for an image extender. The outer area is generated; the middle is your photo.

Mountain lake to desktop wallpaper

Widen a landscape to 16:9 so the peaks and their reflection fill a monitor without being squashed.

  • Portrait with room to breathe

    Add background around a tight portrait for a 1:1 avatar or a 4:5 feed post, without touching the face.

  • Skyline into a website banner

    Stretch a city-above-the-clouds shot into a long header with open sky for a headline.

  • Product shot with space for text

    Give a packshot extra white margin so there is room for a price, a badge or a title.

  • Team photo cropped too tight

    Add table and wall at the sides of a group shot so nobody sits right on the edge of the frame.

  • Interior for a listing

    Open up a living room photo to a wider format for a property page or a cover image.

  • Beach photo for stories

    Turn a landscape travel shot into 9:16 by adding more sky above and more sand below.

How to extend an image

Three steps. Your original always ends up in the middle of the new canvas.

  1. Step 1

    Upload a photo

    JPG, PNG or WebP, up to 15 MB.

  2. Step 2

    Choose the new shape

    Tap 1:1, 4:5, 16:9 or 9:16, or set a custom ratio. The preview shows how much new space will be generated. Add a hint if you like.

  3. Step 3

    Extend and download

    Each run costs 6 credits. Compare the result with your photo, then download it.

Extend a photo

What the extender gives you

Built to grow a photo you already have, not to invent a new one.

  • Presets and custom ratios

    Four common presets, plus any width and height from 1 to 32, so anything from 1:32 to 32:1.

  • Optional prompt for the new area

    Describe what belongs in the empty edges, or leave it blank and let the scene continue.

  • Center kept as it was

    The source area is restored from your upload after generation. If anything inside it looks different, let us know; it shouldn't happen.

  • 2K canvas

    The finished image is up to 2048 px on its longest side, generated with GPT Image 2.5 at its 2K setting.

1:1, 4:5, 16:9 or 9:16: which ratio to pick

Match the ratio to where the image is going, and the platform won't crop it for you.

1:1Square

1:1 square

Even on every side, which keeps the eye on the middle.

Best for: Profile pictures, marketplace product tiles and square feed posts.

4:5Portrait

4:5 portrait

Taller than a square, so it takes up more of a phone screen in a feed.

Best for: Instagram portrait posts, Pinterest-style pins and mobile ads.

16:9Widescreen

16:9 landscape

The shape of most monitors, TVs and video players.

Best for: Desktop wallpapers, YouTube thumbnails, slides and website hero images.

9:16Full-screen vertical

9:16 vertical

Fills a phone screen from top to bottom.

Best for: Stories, Reels and TikTok covers, and phone lock screens.

CustomYour numbers

Custom ratio

Enter any width and height from 1 to 32, such as 3:1 or 21:9.

Best for: Banners, email headers, print layouts and odd-sized ad slots.

Tips for natural-looking edges

The model works from what it sees at the border, so the source photo matters.

01

Use the original file

Screenshots and re-shared images lose detail at the edges, which is exactly what the model continues from.

02

Don't jump too far at once

Turning a narrow vertical shot into an ultra-wide banner asks the model to invent most of the picture. A moderate change looks more believable.

03

Hint only when needed

Skies, grass, water and plain walls continue fine on their own. Use a hint for specifics: a wooden floor, a brick wall, more ocean.

04

Clean the edges first

A half-cut person or pole at the border tends to get continued into the new area. Erase it with the object remover before you extend.

Before and after extending

The extender pairs well with the other tools on the site.

01

Before: erase what's cut off at the edge

If a stray arm, sign or pole is clipped by the border, remove it first so it isn't continued into the new space.

02

After: restyle the wider image

Once the frame is the right shape, give it a new style, season or background by describing the change on the image to image AI tool.

03

After: make it a painting

A widened landscape makes a good wall print. Repaint it as an oil painting or a watercolor.

What the extender doesn't do

Knowing the limits saves credits.

  • No free runs

    The extender isn't on the daily free pool. Every run costs 6 credits from a credit pack or a Pro subscription.

  • It doesn't add resolution

    The whole canvas, old part and new, is capped at 2048 px on the long side. A large photo is scaled down to fit, never up.

  • It doesn't move your subject

    Your photo always sits in the center of the new canvas. It can't be pushed to one side.

  • It can't know what was really there

    The new area is invented. People, signs or buildings that were outside the original shot won't come back as they really were.

Who uses an AI image extender

Anyone with a good photo in the wrong shape.

  • Social media managers

    Fit one photo to square, portrait and story formats without cutting off heads or hands.

  • Designers and site builders

    Make room for headlines in hero banners, slides and ads.

  • Online sellers

    Add clean margin around product photos for badges and prices.

  • Photographers

    Turn a vertical travel shot into a wallpaper without bars or stretching.

Need further adjustments?

The new edges are in. To change anything else about the picture, describe it on the image to image tool:

FAQ