Resize images for social media online
Fit a photo to the exact pixel size a platform actually wants — an Instagram post, a Story, a YouTube thumbnail, a LinkedIn banner — without the platform's own cropping tool cutting off the part you cared about. Add your image, choose where it is going, and download it already the right shape and size.
This fills the whole frame rather than fitting inside it: the image is cropped, centred, to the target's proportions first, then scaled to the exact pixel size. Nothing is stretched or squashed — the parts outside the frame are trimmed, the same as any platform's own crop-to-fill would do, just under your control instead of an algorithm's guess at what matters in the photo.
Your images never leave your device. Everything runs entirely in your browser, so nothing is uploaded, stored, or scanned, and a batch costs no more than a single file.
or drop them here — nothing is uploaded
How to social media image resizer
Add your images
Drop JPG, PNG, or WebP files into the box, or click to browse.
Choose where it is going
Pick the platform and slot — Instagram Post, Story, YouTube Thumbnail, and others are ready-made presets.
Resize and download
Press Social Media Image Resizer. One file downloads on its own; several arrive as a ZIP.
Frequently asked questions
Are my images uploaded anywhere?
No. Everything runs in your browser using JavaScript, so your files stay on your device. You can confirm this by opening your browser devtools Network tab while working — there are no upload requests.
Why does this crop instead of just shrinking to fit?
Because a platform slot is a fixed size that expects to be filled completely — an Instagram post is exactly 1080 × 1080, not something that fits inside 1080 × 1080 with empty bars either side. Filling it from a photo of a different shape means something has to give: this trims the centred overflow rather than distorting the picture to force it into the frame.
What part of the photo gets cropped off?
The edges, evenly on both sides — the crop is always centred on the original image. If the subject you care about is off-centre, crop the photo to roughly the right composition first with Crop Image, then resize it here.
What if my photo is smaller than the target size?
It gets enlarged to fill the frame, which the result will tell you plainly — enlarging softens detail rather than adding any, since a resize cannot invent pixels a smaller original never captured.
Are these the exact sizes each platform wants?
They match each platform's current recommended dimensions at the time of writing. Platforms do occasionally revise these, so if a size looks off, check the platform's current guidance — a pixel or two of difference from the exact recommendation would not be visible anyway.
Is there a limit on how many files?
Thirty at a time, which is a limit of your device rather than our policy — everything is held in memory while it works.