What aspect ratio should I use for Instagram?

Square posts: 1:1 (1080×1080 px). Portrait posts: 4:5 (1080×1350 px). Landscape posts: 1.91:1 (1080×566 px). Stories and Reels: 9:16 (1080×1920 px). Use the Instagram or Story preset for the correct ratio.

How do I crop to an exact pixel size?

Use the 'Exact px' mode in Image Resizer after cropping. Or crop with the free mode, note the output dimensions, then resize to your target. The cropper shows you the output pixel dimensions based on the original image resolution.

Does cropping reduce image quality?

No — cropping only removes parts of the image. The remaining area retains full original quality. No resampling happens unless you also resize. Use PNG output format for lossless results.

Image Cropper

Crop images online — free, private, with aspect ratio presets

Cropping removes unwanted parts of an image, improves composition, and resizes for specific platform requirements. This free image cropper runs entirely in your browser — no server upload, no account, and your images stay completely private. Drag to define a custom crop area, lock to a specific aspect ratio, or choose from built-in presets for every major platform.

Aspect ratio presets for every platform

Different platforms require different image proportions. Instagram feed posts use a 1:1 square or 4:5 portrait ratio. Instagram and TikTok Stories use 9:16 vertical. Twitter/X post images display best at 16:9. Facebook cover photos use a wide 205:78 ratio. LinkedIn banners use 4:1. YouTube thumbnails are 16:9. This cropper includes presets for all of these, so you can crop once and get exactly the right proportions without calculating pixel dimensions manually.

Rule-of-thirds grid for better composition

The rule of thirds is the most fundamental composition principle in photography. Instead of centering the main subject, place it at one of the four intersection points of a 3×3 grid overlaid on the image — where the horizontal and vertical thirds lines cross. This creates more visually balanced, engaging images compared to centered composition. The rule-of-thirds grid overlay in this tool makes it easy to align your crop to this principle and see the composition change as you drag.

Free-form vs locked aspect ratio cropping

Free-form cropping lets you drag to any shape and size, which is useful when you have a specific region to remove (an unwanted person at the edge of a photo, a blank margin, a distracting background element) without caring about the final dimensions. Locked aspect ratio cropping constrains the crop handle so it always maintains the proportions you set — essential when preparing images for platforms that will crop or letterbox anything that doesn't fit their required ratio.

Output quality and format

After cropping, download the result as JPEG (smaller file size, best for photos) or PNG (lossless, best for graphics with text or transparency). The JPEG quality slider lets you balance file size against visual quality — 85% is the sweet spot for social media uploads. The cropped image is exported at the pixel dimensions of your crop selection, so a crop of 800×800 px downloads at exactly 800×800 px with no scaling applied.