Click or drag to upload an image
Supports PNG / JPG / WebP / GIF and more
Tip
Generate standard cover sizes for WeChat, Xiaohongshu, Douyin, Bilibili and Weibo, and preview exactly which parts of your image will be cropped using a translucent dimming overlay. Refine a single image or batch-apply the same size — all processed locally in your browser.
Features
Platform Preset Sizes
Built-in sizes for the WeChat article cover, Xiaohongshu portrait, Douyin vertical, Bilibili cover and Weibo square — one click, no numbers to remember.
Dimmed Safe-Area Preview
The image fills the target ratio, while everything outside the frame is dimmed with a translucent black mask so you can see exactly what gets cropped away.
Custom Width & Height
Enter any width and height between 100 and 4096 pixels to match special covers and ad slots.
Single & Batch Apply
Tune one image with live feedback, or apply the same preset size to many images at once and download them as a ZIP.
Steps
Upload Images
Upload one image in single mode, or switch to batch mode and add several at once.
Choose a Cover Size
Click a platform preset or type a custom width and height — the preview updates the crop-safe area live.
Export the Result
Download as PNG or JPG; in batch mode download each file or bundle them into a ZIP.