Social Media
Image Resizer

What Is a Social Media Image Resizer?

A social media image resizer changes the width and height of a picture so it matches the size a platform expects. Every network displays images in its own frame. A Facebook cover photo is wide and short, an Instagram story is tall and narrow, and a YouTube thumbnail is a 16:9 rectangle. If you upload a picture with the wrong shape, the platform crops it automatically, and the part it cuts off is often the most important part, such as a face, a headline or a logo.

This free tool lets you pick the platform and the exact image type, upload your picture and download a ready-to-post file in a few seconds. It includes presets for Facebook, Instagram, YouTube, TikTok, X (Twitter), LinkedIn, Pinterest and WhatsApp, as well as general video thumbnail sizes.

How to Resize an Image for Social Media

1. Upload your image

Drag a picture into the box or click to choose a file. JPG, PNG, WebP, GIF and AVIF files are supported. The image stays in your browser, so nothing is uploaded to a server.

2. Choose a platform and size

Select a platform such as Facebook, YouTube or TikTok, then pick the image type from the Size list, for example Facebook cover photo or YouTube thumbnail. The width and height fill in automatically. You can also choose Custom and type any size you like.

3. Pick how the image should fit

Fill and crop scales the picture until it covers the whole frame and trims what sticks out. Use the Crop focus option to decide whether the top, bottom, left, right or centre should be kept. Fit inside shows the whole picture and fills the leftover space with the background colour you choose, or leaves it transparent for PNG and WebP. Stretch forces the picture into the new size and is only useful for abstract backgrounds.

4. Download the result

Choose PNG, JPG or WebP, check the preview and press Download resized image. The file name includes the final size, so it is easy to find later.

Social Media Image Sizes at a Glance

Platforms change their recommendations from time to time, so treat these as reliable starting points and check the official help page of the network when you need a strict specification.

Facebook Image Sizes

For ordinary posts and shared links, 1200 x 630 pixels gives a clear landscape preview in the feed. A Facebook cover photo is shown wide and short, so keep faces and text in the middle and leave space on the edges, because mobile and desktop crop the cover differently. Stories use the full vertical 9:16 screen, so keep important text away from the very top and bottom where buttons appear.

YouTube Thumbnail and Video Title Images

A YouTube thumbnail should be 1280 x 720 pixels, a 16:9 ratio, and stay under 2 MB. Because thumbnails are small in the feed, use big readable words, a close face or one clear subject and strong contrast. The same size also works well for blog headers and video title cards. For a channel banner, upload 2560 x 1440 pixels and keep the important content inside the central safe area so it is not cut on phones or TVs.

TikTok, Instagram Reels and Stories

Vertical video lives at 1080 x 1920 pixels, a 9:16 ratio. TikTok, Instagram Stories, Reels, Facebook Stories, YouTube Shorts and WhatsApp Status all use this shape. Use this tool to make a vertical cover image or background and keep captions away from the bottom edge, where usernames and buttons are shown.

Crop, Fit or Stretch: Which Option Is Best?

• Fill and crop is the best choice for photos, because the frame is full and nothing looks distorted.
• Fit inside is best for logos, screenshots and posters where nothing may be cut off. Pick a background colour that matches your brand.
• Stretch changes the proportions of the picture, so avoid it for faces, products and text.

Tips for Sharp Social Media Images

• Start from the largest original you have. Enlarging a small image makes it blurry, and the tool will warn you when that happens.
• Use PNG for graphics with text and sharp edges, and JPG or WebP for photos to keep the file small.
• Keep key content in the centre, because platforms crop feeds, previews and profile frames differently.
• Check the shape first with the Image Aspect Ratio Calculator if you are planning a design from scratch.
• If a platform rejects your file for being too large, shrink it with the Compress Image to Exact KB tool.
• Create a matching profile icon for your site with the Favicon Generator from Image.

Free and Private

The social media image resizer is free, has no watermark and needs no account. The resizing happens in your browser, which means your pictures never leave your device. Use it as often as you like to prepare thumbnails, covers, stories and posts for every platform.