Drop one image, download it correctly sized for every platform — center-cropped to the verified 2026 dimensions. Everything happens in your browser: your image never uploads anywhere.
Resizing is the easy half — posting to 8 platforms is the grind. Smart Post Studio schedules everywhere from your desktop, media stays on your machine. Free plan, no card.
Try the free planPrivacy, since we're a privacy-first company: this page uses your browser's canvas to crop and export — no upload, no server, no storage. Close the tab and everything is gone. Sizes follow our verified 2026 image-size reference (center-crop "cover" fit; for full art-direction control, crop by hand in your editor). Exports are high-quality JPEG except Stories/vertical, which export as PNG when the source has transparency.
Why does one image need so many sizes? Each platform crops to its own ratio: Instagram feed is 4:5 or 1:1, Stories and Reels covers are 9:16, X and LinkedIn previews are roughly 16:9 or 1.91:1, YouTube thumbnails are 16:9 at 1280×720. Upload one size everywhere and at least one platform will crop out your subject or your text.
How does the tool crop? Center crop to the target ratio, then scale to the verified pixel dimensions from our image-size reference. If your subject is off-center, resize first in your editor so the important part sits in the middle, then run it through here.
Will the platform compress it again? Yes, every platform re-compresses uploads. Starting from the exact dimensions avoids a second resize step on their side, which is where most of the visible blur comes from. Export as JPEG at 80–90% quality or PNG for graphics with flat colour and text.
Is my image uploaded anywhere? No. The resize runs in your browser with the canvas API; the file never leaves your computer. That is also how Smart Post Studio's desktop app treats your originals when it schedules them.
More free tools: smartpoststudio.com/tools