Social Media Resize
Social Media Resize fits a photo to the size a platform actually wants — an Instagram post, a story, a YouTube thumbnail, an X header — either by fitting the whole image inside the frame or by filling the frame and cropping the overflow.
Add your image
The file is read by your browser and stays on your device — there is no upload step.
Your image
The work runs in this tab. Nothing is sent anywhere, and the download is generated locally.
Output —Load an image
Your photo stays on your device.
The resize happens on your browser's canvas and the file is saved straight to your downloads.
Learn how files are processed →- Input
- JPG · PNG · WebP
- Presets
- Instagram, TikTok, YouTube, X, Facebook, LinkedIn, Pinterest
- Fitting
- Fill and crop, or fit and pad
- Processing
- Browser Canvas
How to use Social Media Resize
- 01Upload
Add your photo
Drop in a JPG, PNG or WebP.
- 02Customize
Pick a placement
Choose the platform and format; the target size is shown so you know exactly what you are getting.
- 03Process
Fit or fill
Fit keeps the whole picture and pads the edges. Fill covers the frame and crops. Then export.
What are you resizing for?
Every platform re-encodes what you upload. These are the sizes that survive that step looking the way you intended.
- Instagram post1080 × 1080
Square 1:1. Portrait 1080 × 1350 gets more vertical space in the feed if the image suits it.
- Instagram Story / Reel1080 × 1920
9:16. Keep anything important out of the top and bottom 250px, where the interface overlaps.
- YouTube thumbnail1280 × 720
16:9, under 2 MB. It is often rendered around 210px wide, so fine detail and small text disappear.
- X / Twitter header1500 × 500
3:1, and the corners are cropped on some layouts. Keep the subject central.
- Facebook cover820 × 312
Desktop crops the sides and mobile crops the top and bottom, so the safe area is smaller than the canvas.
- LinkedIn banner1584 × 396
4:1. Your profile photo covers the lower left on most layouts.
Resize, or something else?
A preset picks the dimensions for you. It does not solve the other reasons an image gets rejected.
- Rejected for being too many megabytesCompress Image
- I need a size that is not in the listResize Image
- The subject is in the wrong place for this shapeCrop Image
- The platform will not accept the file typeConvert Format
- It is an iPhone photo the site will not takeHEIC to JPG
How the preset fits your image
Your photo is rarely already the shape the platform wants, so something has to give.
The whole image is kept and padded to the preset's shape. Nothing is lost, but you get bars — which read as deliberate on a graphic and as a mistake on a photo.
The image is scaled up until it covers the preset and the overflow is cropped from the edges. Best for photos, as long as the subject is near the centre.
Distorts the image to the exact preset. Almost never right for photographs; occasionally acceptable for abstract backgrounds.
Shrinking and enlarging are not the same operation
Presets can ask your image to get bigger, and that is the case to watch.
Most source photos are larger than any social preset, so the tool is scaling down — averaging pixels away, which stays sharp. This is the normal case and needs no thought.
If your source is smaller than the preset — a screenshot pushed to 1080 × 1920, say — the missing pixels are interpolated and the result looks soft. The platform's own compression then makes it worse. Start from the largest original you have rather than a copy that has already been resized once.
Supported formats
- JPG
- PNG
- WebP
- GIF
- BMP
- Maximum file size —
- bounded by your device's memory
- Processed by —
- your browser's Canvas engine
Your file, and what the page does
Your file is never uploaded. Social Media Resize reads it into this browser tab and processes it with your browser's own Canvas engine on your own device. There is no upload endpoint in the application and no copy on any server — closing the tab discards it.
Because the result is rebuilt from pixels, the source file's EXIF metadata does not survive into it. Camera model, timestamp and any GPS coordinates recorded by your phone are simply not present in the output — a side effect of how canvas encoding works, and a useful one before posting a photo publicly.
What the page does send or fetch
- Ads on the page
- The site is funded by advertising, so the page loads Google AdSense. That carries the usual web basics — IP address, browser, referring page — as on any ad-supported site.
- An anonymous usage counter
- When Social Media Resize finishes we record that the tool ran, whether it succeeded and how long it took. No file data, no identifier, no cookie.
Your file is not on that list. How this works.
Frequently asked questions
The one matching where the image will appear. A square 1080×1080 post, a 1080×1920 story or reel, a 1280×720 YouTube thumbnail. Uploading something close to the target avoids the platform's own resizing, which is usually more aggressive than yours.
Fit shrinks the whole image until it is inside the frame, leaving bars in the background colour. Fill scales it until it covers the frame and crops whatever hangs over. Fit keeps everything and adds space; fill keeps the frame full and loses edges.
Enlarging a small image to a larger frame will soften it, because there is no extra detail to draw on. Going down in size does not — that is why starting from the largest original you have is always better.
They are the sizes that work well today. Platforms change their recommendations without notice, and none of them publishes a stable contract, so treat these as good defaults rather than a guarantee.
It exports at high quality. If the file still needs to be smaller after resizing, run it through Compress Image.
Yes — Social Media Resize is completely free. There's no account, sign-up, watermark or limit.
No. It runs in any modern browser — Chrome, Edge, Safari, Firefox, Brave — with nothing to download or install.
Not sure a preset is what you need?
- I know the exact pixels I wantResize Image
- The file is too large, not the wrong sizeCompress Image
- I need to choose the framing myselfCrop Image
- Same treatment across many imagesBatch Resize
Stop letting the platform choose the crop
Pick the placement, decide what gets cut, and export at the right size.
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