How to straighten a photo

A slightly tilted horizon in a landscape shot, a crooked building in an architecture photo, or a slanted product on a table — even a one-degree tilt looks noticeably wrong to viewers. Magic Eraser detects and corrects the angle automatically, then fills any gaps left by the rotation so you keep the full frame.

Last updated May 17, 2026

Why crooked photos bother us so much con Magic Eraser

Humans are remarkably sensitive to level — research shows we perceive tilts as small as 0.5 degrees against a strong horizontal reference like a horizon or building edge. A tilted photo feels unsettling because our visual system expects gravity-aligned verticals and level horizontals. Manual straightening in editing software involves rotating the image, which creates triangular gaps in the corners that must be cropped away, losing image content. For photos where the composition is tight, this cropping can cut into important subjects. Auto-level tools in basic editors often pick the wrong reference line, straightening to a diagonal element instead of the true horizon. Magic Eraser's AI identifies the correct level reference — horizon, architecture, or gravity — rotates precisely, and uses AI fill to reconstruct the corner gaps so nothing is lost.

Instrucciones paso a paso

1. 1

   Upload the photo

   Open Magic Eraser on web, iOS, or Android and upload the tilted photo. The tool handles any image type — landscapes with tilted horizons, architecture with leaning verticals, product photos on slanted surfaces, or handheld snapshots with slight rotation. All common formats supported.

2. 2

   Auto-straighten or manually adjust

   Tap the auto-straighten button for instant AI-detected correction — the AI finds the dominant level reference (horizon, building edge, or table surface) and rotates to align it. If you prefer manual control, use the rotation slider to dial in the exact angle. A grid overlay helps you visually confirm alignment against horizontal and vertical references in the scene.

3. 3

   Fill corners and export

   After rotation, the AI fills the triangular corner gaps with content-aware generation rather than cropping. This preserves your full composition without losing any edge content. Review the filled corners for natural blending, then export at full resolution. The straightened photo maintains its original dimensions and quality.

Ideal para

• Landscape photography where a tilted horizon ruins an otherwise beautiful shot
• Architecture and real estate photography where vertical lines must be perfectly upright
• Product photography where items need to sit level on the surface
• Handheld phone snapshots taken quickly without time to check alignment

Consejos para mejores resultados

The AI works best when there is a clear level reference in the image — a horizon line, building edge, table surface, or window frame. For photos with no obvious straight reference (forest canopy, abstract textures), the AI uses gravity-based estimation which is accurate but less precise than edge-based detection. When a photo has both a tilted horizon and converging verticals (looking up at a building), straighten the horizon first, then use perspective correction for the verticals separately. For batch processing real estate photos, the auto-straighten feature maintains consistency across an entire property's gallery. If the auto-detection picks the wrong reference (aligning to a diagonal roofline instead of the horizon), switch to manual mode and use the grid overlay to align to the true level reference.

Preguntas frecuentes

Does straightening lose image quality?

Minimal quality loss occurs during rotation because pixel resampling is required. However, Magic Eraser uses high-quality bicubic interpolation that preserves sharpness, and the AI corner fill avoids the resolution loss from cropping. The result is visually indistinguishable from a natively level photo.

Can it fix perspective distortion too?

Straightening corrects rotational tilt — the camera being tilted left or right. For perspective distortion (converging verticals from looking up at buildings), use the perspective correction tool in combination. The two tools complement each other for architecture photography.

Is photo straightening free?

Yes. Auto-straighten and manual rotation are included in Magic Eraser's free tier. Upload your tilted photo, correct the angle, and export the leveled result. Premium adds batch straightening for processing entire galleries at once.