Distortion Correction Tool
Transform images shot at an angle to front-facing view with perspective correction.<br>Auto-detection feature detects document and sign boundaries with one-click selection.<br>All processing is done in your browser, images are not sent to any server.
Drag & drop image files
or click to select
Ctrl+V (Mac: ⌘+V) to paste from clipboard
Frequently Asked Questions
Q: Why isn't auto-detection working well?
Auto-detection finds edges based on contrast between background and object. It may not work well when:<br>• Background and object have similar colors<br>• Strong shadows are present<br>• Image is blurry<br>In such cases, please select the rectangle manually.
Q: What is perspective correction?
Perspective correction transforms images shot at an angle to appear as if viewed from the front. It creates effects like scanned documents or signs photographed straight-on.
Q: Will image quality degrade after correction?
Perspective transformation involves resampling, which may cause slight quality loss. Using PNG format minimizes degradation due to lossless compression.
Q: What kind of images is this tool best for?
This tool is ideal for:<br>• Straightening documents or business cards shot at an angle<br>• Correcting distorted signs and posters<br>• Fixing whiteboard or blackboard photos<br>• Converting exhibition items to front-facing view