How to Edit Image Dimensions in Buffer

Updated on:

May 12, 2026

By:

Use this interactive demo to learn how to resize and crop images directly in Buffer before posting.

Quick summary

Buffer's built-in image editor lets you edit image dimensions directly inside the post composer, so you can crop and resize visuals to fit any social media platform without leaving the tool. Simply upload your image, open the editor, and apply preset or custom dimensions before publishing.

Steps

In your selected social media account, click "+ New Post" to open the post composer.
Click "Drag & drop or select a file" to upload your image.
Select the "Edit" option on the uploaded image to open the image editor.
Click the crop icon to access dimension controls.
Choose a preset size or manually adjust the dimensions to fit your target platform.
Click "Apply" to save your changes and finalize the image dimensions.

📌 Why this matters

Buffer's image dimension editor removes the need for third-party design tools by letting social media managers crop and resize images directly inside the post composer. Getting image dimensions right for each platform — whether it's a square Instagram post or a landscape Twitter card — directly impacts engagement and professional presentation. This feature streamlines the content creation workflow, saving time and ensuring every post is visually optimized before it goes live. For teams managing multiple social channels, in-app image editing is a critical efficiency gain that keeps publishing fast and on-brand.

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