Social Image Resizer
Upload an image, choose a platform preset or your own dimensions, pick crop or fit, and download a clean PNG or JPEG at exactly the right size. Everything happens in your browser — your image never leaves your device.
The wrong size is a small mistake that looks unprofessional
Every platform crops and compresses images to its own dimensions, and when you hand it the wrong aspect ratio it decides for you — usually badly. A landscape photo squeezed into a square feed post gets its sides lopped off; a portrait shoved into a wide cover slot ends up tiny and letterboxed. The fix is to resize deliberately before you upload, so you control exactly what stays in frame. Doing it to the platform's published dimensions also avoids the soft, over-compressed look you get when the service resizes a mismatched file on its end. It takes seconds, costs nothing, and is one of the cheapest ways to make a feed look considered rather than thrown together.
Crop or fit — and why it matters that this is local
Choosing between crop and fit is really a question of what you can afford to lose. Crop fills the frame edge to edge and trims the overflow, which is almost always right for photography where the subject sits near the centre. Fit keeps every pixel of the original and pads the gaps with a background colour, which is what you want for a logo, a chart or anything with text that must stay whole. One quietly important detail: because this tool works entirely on an in-browser canvas, your image is never uploaded anywhere. That matters for unreleased product shots, client work under embargo, or anything you'd rather not hand to a random web service — you get the resized file without the privacy trade-off that most free online tools quietly ask of you.
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Frequently asked questions
Are my images uploaded to a server?
No. The resizing happens entirely inside your browser using an HTML canvas — your image is never sent to us or anyone else, and nothing is stored. You can resize sensitive or unreleased images safely; they never leave your device.
What's the difference between crop and fit?
Crop (cover) fills the whole target size and trims whatever overflows, so there are no borders but some edges are cut — best for photos. Fit (contain) shrinks the whole image to fit inside the target and adds a background colour to fill the gaps, so nothing is cut but you get bars — best when the entire image must stay visible, like a logo or infographic.
Should I export PNG or JPEG?
Use JPEG for photographs — it produces much smaller files at a quality you can tune. Use PNG for graphics with sharp edges, text or transparency, where JPEG compression would create visible artefacts. PNG keeps a transparent background if you choose the transparent option and export with fit rather than crop.