What size should each social media image be?
The eight sizes in this resizer are the ones creators actually publish: YouTube thumbnail 1280 by 720, Reel and TikTok cover 1080 by 1920, Instagram post 1080 by 1350, Instagram square 1080 by 1080, Open Graph image 1200 by 630, YouTube community post 1080 by 1080, Pinterest pin 1000 by 1500, and X post 1600 by 900. Every card exports at exactly that pixel size, never a scaled approximation. If you only care about the YouTube side of that list, the YouTube thumbnail size guide covers the file limits and the surfaces each size lands on.
How do I resize one image for all social media sizes without cropping the wrong part?
Set the focal point first. Every crop here is a cover crop computed outward from that one spot, so a face parked near the top right corner survives the 9:16 cover and the 16:9 thumbnail at the same time. Drag the marker once and all eight previews recompute together. That is the whole reason to do this in one pass instead of opening eight separate export dialogs and guessing each time.
Will resizing make my image blurry?
Only when the crop has fewer pixels than the export needs. This tool never invents detail, and it marks a card as upscaled the moment the cropped region is narrower than the target width. Start from something at least 1600 pixels wide and the wide sizes stay sharp. The tall 9:16 cover is the greedy one, because it wants close to 1920 pixels of height out of an image that was probably shot wide.
Is my image uploaded to a server?
No. The file is decoded into a canvas inside your own browser and every export is encoded there too. Nothing is sent anywhere, there is no account and no queue, and closing the tab erases all of it. That is also why the tool stays free: it costs us nothing to run because your machine does the work.