Resizing for every platform used to cost hours.
Every platform has different aspect ratio requirements: 9:16 for Reels and Stories, 1:1 for feed posts, 16:9 for YouTube, 4:5 for the Instagram main feed sweet spot. Doing all this manually in Photoshop or Canva takes 5-10 minutes per piece of content. Multiply by daily posts, multiply by clients, the math gets ugly.
Auto-formatting handles every platform’s spec automatically. Upload your master file (the highest-quality version you have), and Viraly Post renders the appropriate aspect ratio, character count, and format for each platform you selected.
- Per-platform aspect ratio auto-adaptation (9:16, 1:1, 16:9, 4:5)
- Smart cropping with face/subject detection
- Video re-encoding for platform-specific size limits
- Caption auto-trimming when character limit differs
- Hashtag format adaptation (Instagram vs LinkedIn vs X)
How the smart cropping picks the right frame.
When auto-resizing an image, the algorithm uses face and subject detection to identify what should stay in frame. A landscape image with people on the left will keep the people centered when cropped to vertical. A product shot will keep the product centered.
For video, the algorithm detects the “action region” (where motion is happening) and crops to keep that in frame. You can also manually override the crop region per platform if the algorithm gets it wrong.
- Face detection prioritizes keeping people in frame
- Subject detection prioritizes the main visual element
- Action region detection for videos
- Manual crop override per platform
- Preview before publishing to confirm the crop
A core part of every Viraly Post plan. Available on Starter, Pro, and Scale.
What agencies say about this feature.
“I used to have a Canva subscription just for resizing client content across platforms. Now I just upload the master file to Viraly Post and it handles every aspect ratio. Cancelled the Canva subscription, saved $30/month.”
Pairs well with these.
Features that work together to multiply the time you save.