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Straighten image

A few degrees either way, the corners filled or left transparent.

More free conversions, where you upload. The Fylane extension does the same work inside any upload form, on its own free share every day.About the extension

How to straighten image

  1. Drop the photo.
  2. Type the angle; pick what fills the corners.
  3. Press Rotate and download.

What happens to your file

The camera’s orientation is applied first, then the picture turns by exactly the angle you typed. A turn that is not a right angle leaves four wedges at the corners: they are filled white or black, or left transparent in a PNG. The canvas grows to hold the whole turned picture — crop it afterwards if you want the edges clean.

Angle 0 hands the picture back as it is. For 90, 180 or 270, Rotate image does the same without the corners.

Questions

How do I know the angle?

Estimate from the horizon or a straight edge; try 2 or 3 and look. Clean up scan finds it for you on a page of text.

Can it crop the corners away?

Not in one step — Crop image afterwards. Cropping automatically would guess how much of your picture to lose.

Do this in code

curl -X POST https://api.fylane.dev/v1/jobs \
  -H "Authorization: Bearer $FYLANE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "file_id": "<file id>",
    "operation": "image.rotate",
    "options": {
      "fill": "white",
      "format": "same"
    }
  }'

The same operation, image.rotate — Turn 90, 180 or 270 degrees — after EXIF orientation. Answers WebP unless `format` says otherwise. Upload first with the quickstart; every option is on the operations page. 500 free credits a month, then $5 per thousand.