Cropping is one of the most common image operations: Xiaohongshu wants 3:4, Douyin wants 9:16, avatars must be 1:1, Taobao main images must be 800×800... every platform has different requirements. Instead of opening a heavy Photoshop, use an online image cropper — open the page and crop by ratio or exact pixels.
Why choose online cropping
- No install: open a webpage, no multi-GB downloads
- Exact to the pixel: type the target width and height, done in one pass
- Common ratio presets: 1:1, 4:3, 3:4, 16:9, 9:16 with one click
- Local processing: images never reach a server
Three ways to crop online
Method 1: Crop by preset ratio
The easiest. Pick a target ratio (1:1 square, 16:9 landscape, 9:16 portrait) and the crop frame locks to it; drag to choose the area to keep. Perfect for:
- Avatars, ID photos (1:1)
- WeChat official account covers (2.35:1)
- Douyin/Kuaishou covers (9:16)
- Bilibili covers (16:9)
Method 2: Crop by exact pixels
Use this when a platform enforces exact dimensions. Type width and height — e.g. 800×800 or 1080×1920 — and the frame follows strictly. Perfect for:
- Taobao/Tmall main images (800×800)
- Pinduoduo product images (750×750)
- JD main images (800×800)
Method 3: Free crop
No ratio locked; crop to any shape by dragging the handles. Perfect for:
- Removing clutter at image edges
- Cutting away excess background
- Quick composition adjustment
Crop images online with PixelForge
Open PixelForge Multi-Size Crop Tool — browser-local processing:
- Upload images: JPG, PNG, WebP, batch supported
- Choose ratio or enter pixels: one-click presets or manual width/height
- Drag the crop frame: keep the subject inside the frame
- Export and download: crop results generated locally
Preparation before cropping
- Start with high resolution: cropping removes pixels — the higher the original resolution, the sharper the result
- Know the target first: crop to the platform's size directly, avoid repeated cropping that degrades quality
- Center the subject: keep faces, products and headings in the middle of the frame, not at the edge
Common questions
Q: Does online cropping hurt quality? A: Cropping just removes extra area — it doesn't harm quality. But if the original is low-res, enlarging after cropping gets blurry. So always crop from a high-resolution original.
Q: Can I crop one image into multiple sizes? A: Yes. The PixelForge crop tool supports batch upload and can export the same image at multiple ratios in one go — all platforms covered at once.
Q: Can I undo a wrong crop? A: Not directly, so back up the original first. The tool works locally and never modifies your original file — just re-upload and crop again.
Q: Does online cropping work on mobile? A: Yes. Open it in a mobile browser, drag the frame by touch, save the result. Great for Xiaohongshu and Douyin images on the go.
Q: Will cropped images be smaller? A: Generally yes, since fewer pixels remain. For even smaller files, use the online compressor; to change format, use the format converter.