Straighten a Photo Online
Level a tilted horizon or crooked scan with a precise angle slider — free and right in your browser.
Drop an image to rotate
Drag & drop, paste, or pick a file
PNG · JPG · WebP · GIF · BMP — rotated on your device
Fixing a crooked photo
A slightly tilted horizon is one of the most distracting flaws in a photo — and one of the easiest to fix. The angle slider lets you rotate by a fraction of a degree until the horizon, a building edge, or a document margin is perfectly level.
When you rotate by an arbitrary angle, the image's bounding box grows so no corner is ever cut off. The tool fills the new corners with transparency (for PNG/WebP) or a colour you choose — so you can either keep the full frame or crop it afterwards.
How to straighten a photo
- Open your photo. Drag it onto the tool, choose a file, or paste it.
- Nudge the angle. Drag the angle slider, or use the −1°/+1° buttons, until the horizon is level. The preview updates live.
- Choose corners and download. Keep the opened corners transparent or fill them with a colour, then download.
Use a reference line
Pick a line in the photo that should be perfectly horizontal or vertical — the sea horizon, a doorframe, a table edge — and adjust the angle until it lines up. A degree or two is usually all it takes.
What straighten (free / arbitrary angle) does
Straightening rotates the image by a fine, free angle — any amount from −180° to +180°, nudged a degree at a time — rather than a fixed quarter-turn. The canvas auto-grows to the rotated bounding box so the whole frame is kept, and the triangular corners that open up are filled transparent (PNG/WebP) or with a solid colour (JPG).
This is the fix for a horizon that sits a few degrees off level, a hand-held document scan that came out skewed, or any photo with a slight tilt — the most distracting flaw in an otherwise good shot, and the easiest to correct.
- Angle
- Any value from −180° to +180°, in 1° steps
- Canvas
- Auto-grows so nothing is cropped at the new angle
- New corners
- Transparent (PNG/WebP) or a solid fill (JPG)
Pro tip
Line the tilted horizon or a wall edge up with the preview's edges, and remember most tilts only need 1–3° of correction. After straightening you'll usually want to crop the transparent corners away for a clean rectangle.
More ways to rotate & flip
Frequently asked questions
How do I straighten a tilted photo?
Open it, then drag the angle slider (or use the −1°/+1° buttons) until the horizon or a vertical edge looks level. Download when it's right.
Will straightening cut off the corners?
No. The canvas grows to fit the rotated image, so nothing is cropped. The new corners are filled with transparency or a colour of your choice.
Does straightening reduce quality?
An angled rotation re-samples the image once, which is normal and barely noticeable. There's no repeated quality loss.
Where is my image processed?
The rotation happens in your browser, so the new file is created on your own device. How any data associated with the tool is handled is described in our privacy policy.
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