POSIC Digital/Design Tools/Image Resizer

Image Resizer

Resize one image to every social media platform size. Download as ZIP. Free, browser-only.

🖼️

Drop an image here

or click to browse — JPEG, PNG, WebP, AVIF

Why image dimensions matter per platform

Each social media platform displays images at a specific aspect ratio. If you post an image at the wrong size, the platform crops it automatically at the center. That means your subject can disappear or text can get cut off, and there is nothing you can do about it after posting.

Providing the correct dimensions upfront means your image appears exactly as you intend on every platform. The focal point control gives you the crop decision rather than leaving it to the platform algorithm.

Platform size reference

PlatformFormatDimensionsRatio
InstagramSquare post1080x1080px1:1
InstagramPortrait post1080x1350px4:5
InstagramLandscape post1080x566px1.91:1
InstagramStory / Reel1080x1920px9:16
LinkedInPost image1200x628px1.91:1
LinkedInStory1080x1920px9:16
X (Twitter)Post image1600x900px16:9
X (Twitter)Header1500x500px3:1
FacebookPost image1200x630px1.91:1
FacebookStory1080x1920px9:16
YouTubeThumbnail1280x720px16:9
YouTubeChannel banner2560x1440px16:9

Platform specifications change occasionally. These reflect current recommended sizes as of 2026.

What is focal point?

Focal point is a crop anchor. When the tool resizes a wide image to a square format, it has to cut something out. Without a focal point, it crops from the center. With a focal point set to the subject of the photo, the subject stays in frame across all sizes.

Drag the preview image to position the crop. The crosshair shows what will be centered in the output. Set it once and the same anchor applies to every platform size in the batch.

Frequently asked questions

What does the Image Resizer do?

Upload one image and select which platform sizes you need. The tool resizes and crops the image to each dimension, using a focal point you set to control which part stays in frame. Everything downloads as a ZIP with platform subfolders.

Is this free?

Free, with no account and no usage limits. Resizing happens in your browser. Nothing is uploaded to a server.

What is focal point and why does it matter?

When resizing a landscape photo to a square format, something gets cropped out. The focal point is where you tell the tool to anchor the crop. Set it to the subject of the photo and they stay in frame across all sizes, rather than getting cut off in some formats.

What image formats does it accept?

JPG, PNG, and WEBP. Output format is your choice: JPEG at high, medium, or low quality, or PNG for lossless output. JPEG is smaller and better for photos. PNG is better for graphics with flat colours or transparency.

Why do image dimensions matter for social media?

Each platform displays images at specific aspect ratios. An incorrectly sized image gets cropped automatically by the platform, often in a way that cuts off your subject or text. Providing the right dimensions upfront means your image appears as intended on every platform.

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