Your files never leave your device. All processing happens in your browser.
Open the Img Stop Perspective Correction tool, add your photo, drag the 4 corners onto the tilted rectangle (a building, painting, screen, sign, document or board), choose a shape such as auto, A4, square, 4:3 or 16:9, and download the straightened image.
About the Perspective Correction
Photos taken at an angle make rectangles look like trapeziums – a painting on a wall, a TV screen, a sign or a document on a desk. The Img Stop Perspective Correction tool fixes this: drag 4 corners onto the shape and the image is warped straight.
Choose the output shape – auto, A4, square, 4:3 or 16:9 – and rotate if needed. Original colours are kept, with optional clean-up if you want it. Everything runs in your browser.
Key features
- Drag 4 cornersPlace the corners on any tilted rectangle.
- Warp straightThe area is straightened into a flat rectangle.
- Output shapesAuto, A4, square, 4:3 or 16:9.
- RotateTurn the result the right way up.
- Original coloursColours are kept as they were.
- Optional clean-upClean the result if you want a brighter look.
How to use the Perspective Correction
- Add a photo Drop the photo taken at an angle.
- Drag the corners Move the 4 corners onto the corners of the object.
- Choose shape Pick auto, A4, square, 4:3 or 16:9 and rotate if needed.
- Download Save the straightened image.
Perspective Correction at a glance
| Price | Free, no watermark |
|---|---|
| Method | 4 draggable corners |
| Shapes | Auto, A4, square, 4:3, 16:9 |
| Colours | Original kept; optional clean-up |
| Works on | Buildings, paintings, screens, signs, documents, boards |
| Processing | In your browser – photos are not uploaded |
When to use it
- Straighten a painting or poster photographed on a wall.
- Fix the perspective of a building photo.
- Straighten a screen or slide photographed in a lecture.
- Flatten a sign or menu photographed at an angle.
- Straighten a document or board photo.
Tips for the best result
- Zoom in to place the corners precisely.
- Choose 16:9 for TV and projector screens.
- Use A4 for documents, or the Document Scanner for clean-up modes.
- Shoot with as little angle as possible for the sharpest result.
Frequently asked questions
How do I fix the perspective of a photo?
Open the Img Stop Perspective Correction tool, drag the 4 corners onto the tilted object and download the straightened image.
How do I straighten a photo of a painting?
Place the corners on the corners of the painting and choose auto shape. The painting becomes a flat rectangle.
Can I straighten a photo of a screen?
Yes. Drag the corners onto the screen and choose 16:9.
Does it change the colours?
No. Original colours are kept, with optional clean-up if you want it.
Is my photo uploaded?
No. The correction happens in your browser.
Learn more
- Google Search: Image SEO best practices – make your edited images easy to find
Made and maintained by the Img Stop team.