Raketten Cropper

Raketten Cropper is a focused tool for perspective-cropping photos of flat, mostly rectangular subjects — especially finished jigsaw puzzles — so they look straight and presentation-ready instead of skewed from camera angle. Drop a photo, place four corners around the subject, and the app warps the image into a clean rectangle. No Photoshop skills required. HOW IT WORKS 1. Drop one or more image files on the home screen — or click Browse. 2. Snap Smart analyzes each photo on your device and suggests four corner handles. Drag to refine if needed. 3. Use Tab to zoom to each corner for fine tuning. On desktop, arrow keys, Shift+Ctrl corner placement, and a magnifier while dragging help precision. 4. Tap OK to preview the corrected image, then save as PNG, JPG, or WEBP. 5. When you queue multiple files, the app moves to the next image automatically after each save. SNAP SMART — FASTER CORNER ALIGNMENT Snap Smart is built into Raketten Cropper to speed up the hardest step: placing corners on a warped photo. • Auto-align — when you open an image, the app analyzes it on your device and places four corner handles for you. Adjust with drag, zoom, and keyboard nudge. • Photo tips — read short illustrated guidance on lighting, angle, and framing before you shoot your next puzzle photo. • Private by design — corner detection uses OpenCV in your browser. Your photos are not uploaded for Snap Smart or for editing. MORE TOOLS IN THE EDITOR • Auto — remove the background and crop to content (handy for non-rectangular puzzle shapes). Runs on your device. • Rotate — turn the source image 90° at a time before cropping. • See All — fit the full image on screen. • Handle colors — pick a color that stands out on your photo. • Built-in help and a how-to video linked from the home screen. SAVE YOUR WORK Export the corrected image to your computer as PNG, JPG, or WEBP. Use the saved files in catalogs, social posts, puzzle databases, presentations, or anywhere you need a flat, straight photo. PRIVACY AND ACCOUNTS • Free to use. • No account or sign-in required to crop and save images. • Your photos, corner alignment, Snap Smart detection, and Auto background removal stay on your device during editing. • Anonymous analytics may be used to improve the service; cropping itself does not require sharing your images. BEST EXPERIENCE Raketten Cropper works on Windows tablets and phones, but the corner editor is most comfortable on a desktop or laptop with a mouse, keyboard, and a larger screen. The magnifier zoom and keyboard shortcuts are desktop features. TYPICAL USES • Jigsaw puzzle collectors documenting finished puzzles for IPDb or personal albums • Flat rectangular artwork, posters, or documents photographed at an angle • Product labels, cards, or packaging faces that need a straightened flat crop • Anyone who wants a quick perspective fix without opening a full photo editor ABOUT THE DEVELOPER Raketten Cropper is made by Raketten — independent software from Henrik Rasmussen, creator of IPDb, 3DboxME, and other free utilities. Web app: https://cropper.raketten.net How-to video: https://videos.raketten.net/Cropper/Cropper.mp4 Support: contact via https://www.raketten.net Note: Raketten Cropper corrects perspective for flat rectangular (or Auto cut-out) subjects. It is not a general photo editor. Snap Smart suggests corners; unusual lighting or busy backgrounds may need manual refinement.