Straighten a scanned document

A scan is rarely perfectly straight

Feeding a page into a scanner or photographing a document by hand almost always leaves it slightly tilted, a few degrees off from level. It's a small thing, but it looks unprofessional and can make a document harder to read. This tool rotates the image by an angle you set with a slider, so you can nudge it back to level by eye.

Guide lines to line things up by

Horizontal guide lines are drawn over the preview so you have something straight to compare against: line up a row of text, a ruled line, or the edge of a table with one of them, and adjust the angle until they match.

Cropping away the blank corners

Rotating a rectangular image always leaves blank triangular corners where the page no longer covers the frame. With cropping turned on, the largest rectangle that fits entirely inside the rotated page is cut out automatically, so the download has no blank edges at all — just the straightened content.

Manual, not automatic

This doesn't try to detect the tilt angle for you; your own eye against the guide lines is usually faster and more reliable than an automated guess, especially for documents with uneven text or handwriting.

Small angles are normal

Most scans only need a degree or two of correction — anything more usually means the page itself was fed in badly rather than just resting at a slight angle, and it's still worth straightening either way.

Privacy

Your document is rotated and cropped entirely in your browser. Nothing is ever uploaded.