Crop your images online

Directly in your browser, with no transfer to a server.

How to crop your images

Three steps to fit your files to the right format.

1

Add your images

Drag and drop your files, or choose them from your device.

2

Set the crop

Choose an aspect ratio, then adjust the area in the detail view.

3

Download the result

Download your cropped images individually or as a ZIP.

Crop images in batches

Adjust the crop or add padding with a precise aspect ratio. Processing stays local in your browser.

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Precise cropping

Adjust each image area with an interactive preview.

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Local processing

Images stay on your device during processing.

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Common aspect ratios

Square, story, landscape, portrait or custom dimensions.

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Individual or ZIP export

Download each result or combine them in an archive.

Frequently asked questions

How do I crop an image with Constelly?expand_more

Add your images, choose an aspect ratio, open a thumbnail and adjust the crop area. Start processing, then download the result you want.

Are my images sent to a server?expand_more

No. Cropping, previewing and encoding happen locally in your browser. The quota service does not receive the files.

Which file formats are supported?expand_more

You can import JPG, PNG, WebP, HEIC and HEIF files. Exports are available as JPG, PNG or WebP.

Can I crop multiple images at once?expand_more

Yes. Add several files, adjust each crop and start batch processing. Results can be downloaded separately or combined in a ZIP.

What is the difference between Crop and Pad?expand_more

Crop cuts off areas outside the selected ratio. Pad keeps the entire image and adds margins to reach that ratio.

Which aspect ratios can I use?expand_more

Free, Square, Story, Landscape and Portrait ratios are available. You can also enter custom dimensions to get the exact format you need.

Can I keep the entire image?expand_more

Yes. Pad mode adds margins around the image to reach the selected ratio without cutting the content.

Which output formats are available?expand_more

You can export the result as JPG, PNG or WebP. The selected format applies to processed files.

What does the quality setting do?expand_more

It controls the encoding level for JPG and WebP exports. PNG is lossless and does not depend on this setting.

Can I preview the result before downloading?expand_more

Yes. Preview and processing are available before downloading so you can check the crop and result format.

Does processing use the quota?expand_more

Local processing and preview do not use quota. Quota is checked when downloading an individual result or exporting a ZIP.

Can I download the entire batch at once?expand_more

Yes. Once the images are processed, ZIP export combines the available results in one archive.

Is image cropping free?expand_more

Yes, image cropping is free and requires no sign-up. To process large volumes or use it regularly, switch to Pro.

When should you crop an image?

A suitable crop quickly prepares an image for every use case.

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For social media

Prepare a square, portrait or Story image without opening editing software.

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For a website

Fit an image to a banner, product page or article.

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For a document

Crop a photo for a presentation, form or document before sending it.

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To keep the right format

Use a precise ratio or custom dimensions to keep a consistent layout.

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Your images stay on your device

Cropping and encoding happen in your browser. The original and previews stay on your device; the quota service only authorizes downloads.

cloud_offNothing is uploaded
previewLocal preview
lockNo server-side storage

Can you crop without changing the original?

Yes. The original file stays unchanged. Cropping creates a new image from the selected ratio, format and quality; you can check the result before deciding to download it.

Crop or pad: which should you choose?

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Crop mode

Cuts off areas outside the selected ratio. Use it to fill a frame with an image that matches its dimensions exactly.

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Pad mode

Keeps the entire image and adds margins around the content to reach the requested ratio without cutting the photo.