Perspective Correction
Correct tilted horizons and perspective distortion in photos.
About Perspective Correction
The Perspective Correction tool fixes tilted horizons, keystoned buildings, and warped document photos by straightening the image's geometry. Real estate photographers, archivists, and anyone shooting flat surfaces use it to make lines parallel and angles true without manual distortion work. The tool can detect reference lines automatically or let you place control points yourself, then crops the corrected result. Processing happens entirely in the browser, so client photos and confidential documents are never uploaded.
Key Features
- ✓Corrects tilted horizons and keystoned lines
- ✓Auto-detects reference lines for quick fixes
- ✓Manual mode places corner control points
- ✓Crops the corrected image automatically
- ✓Previews adjustments before download
- ✓Free with no signup required
How to Use Perspective Correction
- 1
Upload Your Image
Click "Choose Image" and select the photo with perspective distortion you want to fix.
- 2
Detect Reference Lines
Let the tool detect straight lines automatically, or switch to manual mode to place corner control points yourself.
- 3
Adjust the Correction
Fine-tune the geometry until vertical and horizontal lines look straight and parallel.
- 4
Preview and Crop
Preview the corrected image, then crop away empty edges left by the transformation.
- 5
Download the Result
Save the straightened image to your device once the perspective looks correct.
Read the complete step-by-step guide with screenshots and pro tips
Common Use Cases
- •A real estate photographer straightens a building that appears to lean backward.
- •An archivist corrects a warped scan of an old document.
- •A user fixes a keystoned photo of a whiteboard taken at an angle.
- •A traveler levels a horizon that came out tilted.
- •A seller flattens a photographed product label for a listing.
Frequently Asked Questions
Is my photo uploaded to correct its perspective?
No. The correction is computed locally in your browser. Your image is never sent to a server, so client and document photos stay private.
Can the tool fix a building that looks like it is leaning?
Yes. It corrects keystoning and tilted horizons by straightening the geometry, either automatically or with manually placed control points.
Does perspective correction cost anything?
No. The tool is completely free, requires no signup, and works entirely in your browser.