Can I use this to generate image test fixtures with known pixel dimensions?

Yes. Upload a source image and use explicit box coordinates to extract a region of known dimensions. The output will be exactly the size defined by your crop box, clamped to the source image boundaries. This gives you a deterministic fixture from any source image.

Does the tool apply any compression or resampling to the cropped image?

No resampling or scaling is applied — the tool crops only. JPEG outputs are re-encoded at standard quality as part of the save step, so for lossless fixture work use PNG input and output.

Is there an API I can use to automate crops in a build pipeline?

Deliteful is a browser-based tool without a public crop API. For automated pipeline use, ImageMagick or the Sharp Node.js library handle programmatic crops. Deliteful is best suited for manual asset prep and one-off crop jobs.

What happens if my crop coordinates are larger than the source image?

Crop values are automatically clamped to the image boundaries. If you specify a right value larger than the image width, the crop extends to the image edge. No error is thrown — you get the maximum valid crop within your specified bounds.

Crop App and UI Images to Exact Pixel Specs Without a Graphics Editor

Software developers preparing image assets for apps, generating test fixtures with known dimensions, or validating image processing pipelines need exact pixel crops — not a GUI drag handle. Deliteful's image crop tool accepts explicit pixel coordinates or a centered width and height, and returns the result without requiring Photoshop, ImageMagick, or a Python script.

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Two scenarios come up repeatedly in development workflows. First: an asset needs to be cropped to a fixed dimension for a UI component — an avatar image capped at 256×256, a thumbnail constrained to 400×300, a splash screen region extracted to 1080×1920. Centered crop mode handles all of these in two field entries. Second: you need a deterministic crop from a known source image to use as a test fixture for an image processing feature under development. Explicit box coordinates give you a reproducible extraction every time.

The tool processes PNG, JPEG, and WebP without format conversion and does not apply scaling or resampling — what you crop is what you get, pixel-for-pixel. For CI pipelines and automated workflows, Deliteful is a browser tool rather than a CLI, so it fits best in manual asset prep stages rather than automated build steps.

How it works

1
Identify the target pixel dimensions
Check your component spec, design system, or test fixture requirements for the exact output dimensions needed.
2
Choose box or centered crop
Use explicit coordinates for reproducible extractions from a known source; use centered crop for standard UI asset dimensions.
3
Upload, process, and save the output
Deliteful returns the cropped file in the original format — drop it into your assets directory or test fixtures folder.

Frequently asked questions

Can I use this to generate image test fixtures with known pixel dimensions?: Yes. Upload a source image and use explicit box coordinates to extract a region of known dimensions. The output will be exactly the size defined by your crop box, clamped to the source image boundaries. This gives you a deterministic fixture from any source image.
Does the tool apply any compression or resampling to the cropped image?: No resampling or scaling is applied — the tool crops only. JPEG outputs are re-encoded at standard quality as part of the save step, so for lossless fixture work use PNG input and output.
Is there an API I can use to automate crops in a build pipeline?: Deliteful is a browser-based tool without a public crop API. For automated pipeline use, ImageMagick or the Sharp Node.js library handle programmatic crops. Deliteful is best suited for manual asset prep and one-off crop jobs.
What happens if my crop coordinates are larger than the source image?: Crop values are automatically clamped to the image boundaries. If you specify a right value larger than the image width, the crop extends to the image edge. No error is thrown — you get the maximum valid crop within your specified bounds.

Create your free Deliteful account with Google and crop your next batch of app image assets to spec without writing a script.