---
title: Image operations
description: Resize, crop, rotate, flip, and adjust images.
---

Direct operations return a new `Pixer` instance and leave the original image
unchanged.

## Resize

```dart
final fitted = image.resize(800, 600);
final exact = image.resizeExact(800, 600);
```

`resize` preserves the aspect ratio. `resizeExact` may stretch or squash the
image.

Choose a resize filter when needed:

```dart
final pixels = image.resize(
  320,
  240,
  filter: FilterTypeEnum.Nearest,
);
```

The available filters are `Nearest`, `Triangle`, `CatmullRom`, `Gaussian`, and
`Lanczos3`. `Lanczos3` is the default.

## Crop

```dart
final cropped = image.crop(100, 100, 400, 300);
```

The arguments are `x`, `y`, `width`, and `height`. The crop rectangle must fit
inside the image.

## Rotate and flip

```dart
final clockwise = image.rotate90();
final upsideDown = image.rotate180();
final counterClockwise = image.rotate270();
final mirrored = image.flipHorizontal();
final vertical = image.flipVertical();
```

## Adjust

```dart
final soft = image.blur(2.5);
final lighter = image.brightness(30);
final punchier = image.contrast(20);
final gray = image.grayscale();
final negative = image.invert();
```

Remember to dispose every returned image after use. For several operations,
prefer a [batch](/batch-processing) so intermediate images remain inside Rust.