Intervention/image · error · InvalidArgumentException

The specified position ({x}, {y}) is not within the image ar

Error message

The specified position ({x}, {y}) is not within the image area

What it means

colorAt($x, $y) validates the request before touching Imagick and throws InvalidArgumentException when x exceeds width-1 or y exceeds height-1. Coordinates are zero-based, so the maximum valid coordinate is one less than the dimension; note the guard only covers the upper bound — negative coordinates pass this check and fail later inside Imagick (the 'Failed to read pixel color' error).

Source

Thrown at src/Drivers/Imagick/Analyzers/PixelColorAnalyzer.php:28

use Intervention\Image\Exceptions\InvalidArgumentException;
use Intervention\Image\Exceptions\StateException;
use Intervention\Image\Interfaces\ColorInterface;
use Intervention\Image\Interfaces\ColorProcessorInterface;
use Intervention\Image\Interfaces\FrameInterface;
use Intervention\Image\Interfaces\ImageInterface;
use Intervention\Image\Interfaces\SpecializedInterface;

class PixelColorAnalyzer extends GenericPixelColorAnalyzer implements SpecializedInterface
{
    /**
     * @throws InvalidArgumentException
     * @throws AnalyzerException
     * @throws StateException
     */
    public function analyze(ImageInterface $image): mixed
    {
        if ($this->x > $image->width() - 1 || $this->y > $image->height() - 1) {
            throw new InvalidArgumentException(
                'The specified position (' . $this->x . ', ' . $this->y . ') is not within the image area',
            );
        }

        $colorProcessor = $this->driver()->colorProcessor($image);

        return $this->colorAt($colorProcessor, $image->core()->frame($this->frame));
    }

    /**
     * @throws AnalyzerException
     */
    protected function colorAt(ColorProcessorInterface $processor, FrameInterface $frame): ColorInterface
    {
        try {
            return $processor->import(
                $frame->native()->getImagePixelColor($this->x, $this->y),
            );

View on GitHub (pinned to 5598b9e397)

Solutions

1. Fix the bounds: valid coordinates satisfy 0 <= x < width and 0 <= y < height — use < instead of <= in loops.
2. Clamp before the call: $x = max(0, min($x, $image->width() - 1)); and the same for y.
3. Re-read width()/height() after every geometry change instead of caching sizes.

Example fix

// before
for ($x = 0; $x <= $image->width(); $x++) {
    $color = $image->colorAt($x, 0); // x == width is one past the last pixel
}

// after: the last valid column is width - 1
for ($x = 0; $x < $image->width(); $x++) {
    $color = $image->colorAt($x, 0);
}

$x = max(0, min($x, $image->width() - 1));
$y = max(0, min($y, $image->height() - 1));
$color = $image->colorAt($x, $y);

function isValidPixel(\Intervention\Image\Interfaces\ImageInterface $image, int $x, int $y): bool
{
    return $x >= 0 && $y >= 0 && $x < $image->width() && $y < $image->height();
}

When it happens

Trigger: Sampling loops written as for ($x = 0; $x <= $image->width(); $x++) colorAt($x, $y); using cached dimensions from before a resize/crop; hard-coded coordinates applied to differently sized images; passing $image->width() as if it were the last column index.

Common situations: Edge/border sampling code (border color detection, watermark placement) with off-by-one errors; batch processing of mixed-size images with one fixed coordinate set; coordinates computed from percentages rounded up to the full dimension.

Related errors

• Failed to read pixel color at position
• The specified position ({x}, {y}) is not within the image ar
• Failed to apply Intervention\Image\Drivers\Imagick\Modifiers
• Given color space must implement Intervention\Image\Interfac
• Class '{objectShortname}' is not supported by {id} driver

AI-assisted analysis of Intervention/image@5598b9e397 (2026-08-23). Data as JSON: /api/errors/9f4431dfd0e20717. Report an issue: GitHub.