Social Image Resize

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Social Image Resizer — Preset Sizes for Every Platform

Resize and crop images to the exact pixel dimensions each platform expects, with built-in presets for Instagram, YouTube, Twitter/X, Facebook, and Chinese platforms WeChat (微信), Douyin (抖音), and Xiaohongshu (小红书) — profile pictures, covers, posts, and thumbnails.

Each platform's recommended sizes are built in, so you never ship a cover photo that gets cropped awkwardly. Processing is local: your photos are resized on your device and never uploaded.

How to resize for social media

  1. Drop your image into the upload area.
  2. Pick a platform preset — profile, cover, post, or video thumbnail.
  3. Adjust the crop position if needed.
  4. Download the correctly sized image.

Frequently asked questions

Why do platforms need specific image sizes?

Each surface (avatar, cover, feed card) renders at a fixed box. Exact-sized uploads avoid platform-side re-cropping and compression, keeping your composition and sharpness under control.

What size should a profile picture be?

Most platforms render avatars as circles from a square source — a 400×400 or larger square keeps quality after their compression. Covers and banners vary widely; use the presets rather than guessing.

Are my photos uploaded for resizing?

No. Cropping and scaling run in your browser on your device.

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PureKit · image-resize · Free online tool — files processed locally in your browser, no upload.