Batch Image Rotator

Rotate multiple images at once by the same angle for batch processing.

Tested tool guide Tested browser tools Checked August 16, 2026

What Batch Image Rotator does, with a checked example

A batch with the same sideways or upside-down error can be corrected in one pass. Add multiple images, choose one rotation angle, and the Batch Image Rotator applies that angle to every item, producing a rotated result for each source. Processing stays in the browser, so the selected image data is not uploaded. The main surprise is that the tool does not decide orientation independently: an image that was already upright receives the same turn as all the others.

Worked example

A concrete input and expected output from the current implementation.

Input

Angle: 180 degrees. Image A is a 2 by 2 PNG with rows [red, green] and [blue, white]. Image B is a 2 by 2 PNG with rows [black, yellow] and [cyan, magenta].

Expected output

Two rotated images. Image A has rows [white, blue] and [green, red]. Image B has rows [magenta, cyan] and [yellow, black]. Both results remain 2 by 2.

A 180-degree rotation reverses the row order and the left-to-right order within every row. A half-turn leaves the width and height of each image unchanged.

How the result is produced

One angle per batch

The operation has two essential inputs: a selection containing multiple images and one rotation angle. That angle is repeated for every selected source, so the batch is useful for identical corrections. If one source begins 90 degrees away from another, applying an equal turn leaves them 90 degrees apart. Equal rotation preserves their relative angular difference.

Half-turn mapping

For a W by H raster, a 180-degree turn maps the pixel at zero-based coordinate (x, y) to (W - 1 - x, H - 1 - y). The mapping uses each image's own width and height. Clockwise and counterclockwise choices produce the same arrangement at 180 degrees, even though their directions differ for quarter-turn rotations.

Good uses

Turning a run of scanned pages 180 degrees after every sheet was fed upside down.
Correcting product photographs that were all captured with the same sideways camera orientation.
Rotating a group of screenshots from one device session before placing them in documentation.

Limits and checks

Review the selection for mixed orientations. A single shared angle cannot simultaneously correct upright, sideways, and upside-down sources.
For a 90-degree turn, direction matters. Test an image with visibly asymmetric content if you are unsure which direction the chosen control represents.
Rotation alone does not establish whether the result preserves metadata, the source file format, or the original file size. Inspect those properties when they matter.

Common questions

Will it automatically make every selected image upright?

No. The tool applies the angle you choose uniformly; it does not select a separate correction for each image. If the files have mixed orientations, sort them into batches first. Process the sideways group separately from the upside-down group, and leave already upright files out of both runs.

Is 180 degrees clockwise different from 180 degrees counterclockwise?

No. Both directions move every point to the same opposite position after a half-turn. This makes 180 degrees an unambiguous correction for uniformly upside-down images. The equivalence does not extend to 90-degree turns: clockwise and counterclockwise quarter-turns produce different orientations unless the image content has matching rotational symmetry.

References and verification

The example and behavioral notes were checked against the browser implementation. Standards and primary references below define the relevant format, formula, or platform behavior.