Batch Crop Images to 9:16 lets you crop multiple images in bulk to the full-screen vertical shape used by Instagram Stories and Reels, TikTok, YouTube Shorts, Snapchat and phone wallpapers. 9:16 is 16:9 turned on its side, with 1080 by 1920 pixels as the common size. Photos taken in landscape or in the usual 3:4 phone shape do not fill a vertical screen, so apps add blurred bars or zoom in on their own and cut something important. Cropping a whole set before you build a story sequence or a slideshow video keeps the result predictable. The tool starts in Max area per image mode: each image gets the largest 9:16 frame inside it. A 3000 by 4000 portrait photo becomes 2250 by 4000 with a little trimmed from the sides, while a 4000 by 3000 landscape becomes a narrow 1688 by 3000 slice, so for landscape shots it is worth moving the box onto the subject. The position you set on one image is applied relatively to all, and every thumbnail can be checked before downloading. Keep in mind that Stories and Reels cover the top and bottom of the screen with the profile name, captions and buttons, so leave important text away from the edges. The images are processed in your browser and downloaded as a ZIP, never uploaded. For horizontal video use Batch Crop Images to 16:9, for feed posts use Batch Crop Images for Instagram (4:5), and to make the files smaller before uploading use Image Compressor.
Cropping the same region from a large set of images sounds trivial until you face it. A desktop editor crops one file in seconds, but repeating that 400 times means 400 chances to be a few pixels off, and the results no longer line up side by side in a report, a slideshow or a training dataset. Batch cropping removes both the repetition and the drift, because the box is defined once and applied numerically to every file. Creators cut the chat panel, webcam frame or game HUD out of hundreds of screenshots. Online sellers remove the studio edge or tripod shadow from product photos shot on a fixed setup, so a whole catalogue gets identical framing. Researchers and analysts extract the same chart, map region or table from screenshots taken over days or weeks, which makes changes easy to compare. Administrative staff pull the signature box or stamp area from a stack of scanned forms. Speed is rarely the bottleneck: in a test run in Chrome on a Windows PC, 1,000 full HD PNG screenshots (1920 by 1080 pixels) were cropped to 640 by 360 and zipped in about 70 seconds, and the page used under 50 MB of JavaScript memory, because each image is decoded, cropped and encoded before the next one starts. Other ways to batch crop images exist, and each fits a different situation. Photoshop can record a crop as an action and run it through File, Automate, Batch, which works well but needs a paid licence. IrfanView on Windows has a Batch Conversion dialog with a crop option under Advanced settings. ImageMagick does it from the command line with magick mogrify -crop 640x360+400+300 +repage *.png, where the numbers are width, height, X offset and Y offset; mogrify overwrites the originals, so run it on a copy. This page covers the common case, one fixed area for a whole folder, without installing anything and with a visual preview of the box on every image. When the output needs a fixed pixel size for a platform, follow up with Image Resizer, and use Image Format Converter if a later step expects a specific format.