Resize Image for Twitter Post — Free Online Tool
Twitter/X displays in-feed images at 1200x675 pixels — a clean 16:9 aspect ratio that previews fully in the timeline. PDFBro resizes your post images to this exact resolution for free online. No signup needed — upload, resize, and download images that display in full without Twitter's automatic cropping.
Free Online Tool
Resize Image
Resize any image to exact dimensions — set custom width and height, maintain aspect ratio
How to Resize an Image for Twitter Post
Upload your image
Drag and drop any image into PDFBro's resize tool. Supports JPEG, PNG, WebP, and SVG formats up to 100 MB. Works on desktop, tablet, and mobile browsers.
Set dimensions to 1200x675
Enter 1200 for width and 675 for height. This is the exact Twitter Post resolution (16:9 (widescreen) aspect ratio). Enable 'Maintain aspect ratio' for proportional scaling, or disable it to force exact dimensions if your original aspect ratio differs.
Download your resized image
Click Resize and download your perfectly sized Twitter Post image. Zero watermarks, zero quality loss from the resize operation, instant download. Use it directly on Twitter.
Best Uses for Twitter Post Images
Tweet images that display in full without cropping, thread illustration graphics, product screenshots, chart and infographic sharing, announcement visuals, quote graphics, and photography posts. At 1200x675, images fill the timeline preview and expand to full width when tapped.
Why Use PDFBro to Resize Images
Frequently Asked Questions
What image size does Twitter use for in-feed posts?
1200x675 pixels (16:9 aspect ratio) is the ideal size for tweet images. Twitter displays this without cropping and it fills the timeline preview. Other supported ratios are 1:1 (1200x1200) and 2:1 (1200x600). PDFBro sizes to the recommended 16:9 for maximum visibility.
Does Twitter still crop images in timelines?
Twitter ended aggressive automatic cropping in 2021. Images now display naturally in the timeline based on their aspect ratio. 16:9 images show full-width previews. Tall images (4:5 or 9:16) may be shortened with a 'Show more' button. The 1200x675 size gives the best full-visible preview.
What's the maximum file size for Twitter images?
Up to 5 MB for photos on twitter.com and mobile apps. At 1200x675 pixels, a JPEG at 85-90% quality stays around 200-400 KB — well within the limit and fast to load on mobile data. PDFBro can also compress after resizing if needed.
Can I post 4K images on Twitter?
Twitter accepts images up to 4096x4096 pixels, but they'll be downscaled to fit the viewer's screen. Uploading at 1200x675 gives you the sharpest timeline preview without wasting upload time or mobile data. For photography posts where users may expand the image, 2400x1350 (retina 2x) preserves extra detail.