UltKit

Crop Image

Cut away the parts of a picture you do not want. Drag the box freely, lock it to a shape such as 1:1 or 16:9, type an exact pixel size, or cut a round profile picture; the same crop can be applied to a whole batch.

Crop Image

or drop JPG, JPEG, JFIF … files here ·

Max 95 MB per file· Up to 20 files· Deleted after 30 minutes

Crop box

Files are processed on our servers and deleted after 30 minutes.

How to use this tool

  1. 1

    Open the images

    Upload up to 20 JPG, PNG, WebP, AVIF, HEIC, GIF, BMP or TIFF files, each up to 95 MB.

  2. 2

    Set the crop box

    Pick an Aspect ratio, or Free to drag any rectangle, or Custom size (px) for exact pixels. Switch Shape to Circle for a round picture, then move the box over the part you want to keep.

  3. 3

    Crop and download

    Press Crop and save each result, or all of them as a ZIP. Nothing is kept on the server after 30 minutes.

Crop first, then resize: choosing what stays in the frame is the step that changes how a picture reads.

How to crop an image online

The crop box is set by three things. Aspect ratio fixes its shape, from Free through nine common ratios to an exact Custom size (px). Start position decides where the box sits when the image opens: center, one of the four edges, one of the four corners, or Smart, which looks for the main subject such as a face or a product. Then you drag the box to fine-tune it; in a batch, the start position is what every image uses.

Cropping is not only about trimming clutter. A ratio that matches the destination stops the platform from cropping for you, which it otherwise does without asking: a landscape photo posted to an Instagram feed or set as a profile picture loses its edges in a way you cannot control. Cropping to the right ratio yourself keeps the subject where you want it. The step-by-step guide on how to crop an image to a ratio shows this with examples.

Which aspect ratio to crop to

The ratios under Aspect ratio and where each one is expected
RatioShapeWhere it is usedExample size
1:1SquareProfile pictures, marketplace listings, square posts1080 × 1080 px
4:5PortraitInstagram feed (tallest allowed), 8 × 10 in prints1080 × 1350 px
3:4PortraitPhone photos held upright, Pinterest-style tiles1080 × 1440 px
2:3Portrait4 × 6 in prints held upright, posters, book covers1200 × 1800 px
9:16TallStories, Reels, TikTok, phone wallpapers1080 × 1920 px
16:9WideYouTube thumbnails, slides, desktop wallpapers1920 × 1080 px
4:3LandscapeMost phone cameras' native frame, older monitors1600 × 1200 px
3:2LandscapeDSLR and mirrorless sensors, 6 × 4 in prints1800 × 1200 px

Circle crop, auto-trim and output settings

Shape switches between Rectangle and Circle. A circle crop cuts a round image out of the box; the corners become transparent in PNG, WebP and AVIF, while JPG fills them with the color chosen under Outside the circle: white, black or any hex Background color. That is the format most chat apps and forums use for avatars, including the round Discord pfp.

Auto-trim borders removes uniform margins before the crop: the white frame around a scan, the black bars of a screen recording still, or the empty transparent edge of a logo export. Trim tolerance sets how different a border pixel may be and still count as border; 10% handles clean edges, 20–30% handles noisy scans.

The output group keeps the original format or switches to JPG, PNG, WebP or AVIF, with Quality at 85 for the lossy ones. Auto orient applies the camera rotation first, so the box matches what you see on screen, and Strip metadata removes location and camera data from the cropped file.

MythCropping a photo makes it blurry.

FactThe kept pixels are untouched. It only looks softer if you then display the smaller crop at a larger size.

MythCropped-out parts are hidden but still in the file.

FactA cropped JPG, PNG or WebP saved here contains only the kept area; metadata thumbnails of the full photo are removed when Strip metadata is on.

MythYou need a desktop editor to crop to an exact ratio.

FactA locked ratio or a custom pixel size in the browser gives the same result, on a phone too.

Before you crop the image

  • Find out the ratio or pixel size the destination expects before you drag
  • Leave a little space around heads and products; tight crops look cramped in round or rounded frames
  • Keep the eyes about a third from the top in portraits
  • Use PNG or WebP output for a circle crop with transparent corners
  • Crop from the original, not from a screenshot of it
  • For passports and visas, use the passport photo maker, which also checks head size and background

Cropping questions

How do I crop the image to an exact size in pixels?

Choose Custom size (px) under Aspect ratio and type the Width and Height, for example 1200 × 628. The box keeps that size while you move it. If the photo is smaller than the box, resize it up first with the image resizer.

Can I crop free hand without a fixed shape?

Yes. Free is the default Aspect ratio: drag the corners and edges wherever you like and the result is exactly the rectangle you drew.

Is there an auto crop for scanned images?

Tick Auto-trim borders and the plain white, black or transparent margin around the picture is detected and removed before your crop is applied. Raise Trim tolerance above the default 10% if the scanner left a grey, uneven edge.

How do I cut a picture into a circle?

Set Shape to Circle with the 1:1 ratio, place the circle over the face, and choose PNG or WebP as Output format so the corners stay transparent. With JPG they are filled with the color under Outside the circle, white by default.

Does cropping reduce the image quality?

Cropping removes pixels at the edges but does not touch the ones you keep. The only quality step is the re-save: PNG is lossless, and for JPG, WebP and AVIF the Quality default of 85 is visually identical to the original. The crop does have fewer pixels, so it shows less detail when enlarged.

Can I apply the same crop to many photos at once?

Yes. The ratio, size and Start position you set apply to every image in the batch, which works well for product shots or screenshots framed the same way. Use Smart as start position when the subject sits in a different spot in each photo.

What is the difference between cropping and resizing?

Cropping cuts off part of the picture and keeps the rest at its original scale; resizing keeps the whole picture and changes how many pixels it has. To get a 1080 × 1080 post from a large photo, you usually crop to 1:1 first and then resize.