Uploading an image that is the wrong size to a social media platform results in automatic cropping, blurring or white bars around your photo. Each platform has its own recommended image dimensions, and they change from time to time. This guide covers the correct sizes for every major platform in 2026, and explains how to resize images for free — entirely in your browser.
Why image size matters on social media
Social platforms compress and crop images that do not match their target dimensions. An image that is too wide gets cropped on the sides. An image that is too small gets stretched and appears blurry. Getting the right dimensions before uploading means your image looks exactly the way you intended — sharp, well-framed and professional.
Facebook image sizes (2026)
Facebook applies different dimensions depending on where the image appears. The most commonly used sizes are listed below.
For Facebook posts, the 1200 × 630 px landscape format works across both desktop and mobile feeds without cropping. Profile pictures are displayed as circles, so keep your subject centred. Use our free Resize Image for Facebook tool to quickly apply any of these presets.
Instagram image sizes (2026)
Instagram supports three aspect ratios in the main feed, plus a separate format for Stories and Reels.
Portrait (4:5 ratio) takes up the most screen space in the feed and tends to perform best for engagement. Stories and Reels use the full 9:16 vertical format. Use our Resize Image for Instagram tool to convert to any of these sizes.
LinkedIn image sizes (2026)
LinkedIn is a professional network where image quality directly reflects on your personal or company brand.
LinkedIn compresses images significantly, so always start with a high-quality original and use JPG format for photos. The standard post image ratio is close to 1.91:1, similar to Facebook.
WhatsApp image sizes (2026)
WhatsApp automatically compresses images when sent as photos. Sending as a Document preserves the original quality but loses the inline preview. For sharing photos in groups or broadcasts, keeping the file size under 500KB while maintaining good quality gives the best result.
Use our Compress Image for WhatsApp tool to reduce your photo size before sending.
How to resize images for free — no software needed
You do not need Photoshop or any installed software to resize images. Our free Image Resizer tool runs entirely in your browser — your image is never uploaded to a server.
- Open the Image Resizer on Tools2Do.
- Click the file input and choose your image from your device.
- Enter your target width and height (or use a social media preset page).
- Click Process Image and download the resized file.
For platform-specific presets, use the dedicated pages: Resize for Facebook or Resize for Instagram.
Tips for better social media images
- Always start with a larger image. Scaling down preserves quality. Scaling up makes images blurry.
- Use JPG for photos. JPG compresses well and is accepted everywhere. PNG is better for graphics with text or transparent backgrounds.
- Compress after resizing. After resizing to the right dimensions, run the image through the Image Compressor to reduce file size without visible quality loss.
- Keep important content away from edges. Some platforms crop images differently on mobile vs desktop. Centre your subject and leave breathing room around the edges.
- Check the file size limit. Most platforms accept up to 8–16MB, but images above 1MB are usually compressed by the platform anyway. Aim for under 500KB for best results.
Free image tools on Tools2Do
- Image Resizer — resize to any custom width and height
- Resize Image for Facebook — presets for all Facebook image types
- Resize Image for Instagram — presets for posts, stories and profile pictures
- Image Compressor — reduce file size with quality control
- Compress for WhatsApp — optimise images for WhatsApp sharing
- Image Converter — convert between JPG, PNG and WebP