Social Media Image Resizer

There isn't one best size — there's a best size per slot, and they're set by aspect ratio more than exact pixels. The feed-friendly defaults: Instagram portrait is 1080×1350 (4:5, the tallest the feed allows and so the biggest footprint), square is 1080×1080, and stories and Reels are 1080×1920 (9:16). Landscape posts on Facebook, LinkedIn, and X cluster around 1.91:1 (roughly 1200×630). YouTube thumbnails are 1280×720 (16:9), and Pinterest Pins are 1000×1500 (2:3). This tool has all of them as presets, so you pick the slot rather than memorize the numbers.

Instagram uses four: a portrait post is 1080×1350 (4:5) — the tallest the feed allows, so it takes the most screen; a square post is 1080×1080 (1:1); Stories and Reels are 1080×1920 (9:16); and a landscape post is 1080×566 (1.91:1). The resizer has all four as presets, so you upload one image, tick the Instagram sizes you need, and export them together — no re-cropping per size.

No. The resizing happens entirely in your browser using the canvas — your image is read from your device, redrawn at each target size locally, and offered back as a download. Nothing is sent anywhere, there's no account, and closing the tab clears everything. That's the whole design: a tool that only ever touches the file you chose, which also means it works offline once the page has loaded.

Crop to fill scales your image up until it covers the whole target and trims the overflow — no borders, but the edges get cut, which is why you can drag to choose which part stays in frame. Fit & pad does the opposite: it shrinks the image until it fits entirely inside the target and fills the leftover space with a color you pick, so nothing is cropped but you get bars on two sides. Use crop to fill for photos where the composition can lose its edges, and fit & pad for logos, screenshots, or graphics that can't be trimmed.

Only if the target is bigger than your source. Shrinking a large image to a smaller size stays crisp; enlarging a small image to a bigger canvas invents pixels and softens — the tool flags this with an amber note when a chosen size would upscale your source. The fix is to start from the largest original you have. A 3000-pixel-wide photo downsizes cleanly to every preset here; a 600-pixel one will look soft at most of them no matter what tool you use.

JPEG for photographs and anything with gradients — it compresses continuous tone efficiently, and the quality slider lets you trade a little fidelity for a much smaller file. PNG for graphics with flat color, sharp text, or hard edges (logos, screenshots, simple illustrations), where JPEG's compression leaves visible artifacts around the edges. As a rule of thumb: if the image looks like a photo, ship JPEG; if it looks like it was drawn, ship PNG.

Yes — that's the point of the tool. Tick every size you need across the 7 platforms, set your crop position and format once, and download the whole set as a single ZIP with each file named by platform and dimensions. Your focal point and fit mode apply to every size in the batch, so a portrait photo and a wide banner both keep the subject you positioned in frame. There are 15 presets in total.