Social Media Image Resizer
100% private — runs on your device, never uploaded. Works offline once loaded.
Resize any image to the exact pixel dimensions required by Instagram, Facebook, Twitter/X, LinkedIn, YouTube, TikTok and Pinterest. Everything runs in your browser.
Why every platform demands a different size
Instagram feed posts are square or 4:5 portrait, Stories and Reels are tall 9:16, Facebook cover photos are wide banners, and YouTube thumbnails are 16:9 — each platform designed its layout around a specific aspect ratio, not just a pixel count. Upload an image with the wrong ratio and the platform's own auto-crop takes over, often cutting off heads, logos, or text in ways you didn't intend. Matching the exact dimensions upfront puts you in control of the crop instead of leaving it to an algorithm you can't preview.
Cover vs. contain: two ways to fit a mismatched photo
When your source photo's proportions don't match the target box, you get a choice. Cover scales the image up until it fills the entire frame edge-to-edge, cropping off whatever spills outside — a landscape photo dropped into an Instagram square will lose its left and right edges. Contain instead scales the image down to fit entirely inside the frame, adding letterbox or pillarbox bars (typically white or transparent) around it so nothing gets cut off, at the cost of not filling the space completely.
Presets covering the platforms people actually resize for
The dimension requirements below are the ones creators and marketers hit most often when prepping a single photo for multiple channels:
- Instagram feed post: 1080×1080 (square) or 1080×1350 (portrait)
- Instagram/Facebook Story: 1080×1920
- Facebook cover photo: 820×312
- Twitter/X post image: 1600×900
- LinkedIn banner: 1584×396
- YouTube thumbnail: 1280×720
- Pinterest pin: 1000×1500
Keeping a campaign consistent across channels
A common workflow is taking one hero photo — a product shot or event photo — and exporting it correctly sized for five or six platforms in one sitting, rather than manually cropping in a separate editor for each. Since cover mode crops toward the center by default, it helps to keep faces, logos and key text roughly centered in your original photo before resizing, so nothing important lands in the area a tall Story or wide banner crop cuts away.
Frequently asked questions
What is cover vs contain?
Cover crops to fill the exact size; contain fits the whole image with letterboxing if needed.
Are my images uploaded?
No — resizing happens on your device.
What's the real difference between cover and contain?
Cover fills the target frame completely by cropping off whatever doesn't fit, while contain shrinks the whole image to fit inside the frame, adding bars around it so nothing is cropped.
Will the platform presets go out of date if a network changes its dimensions?
Social platforms do occasionally revise recommended sizes, so if a specific upload looks off after a platform redesign, it's worth double-checking that network's current published dimensions before assuming the resize was wrong.
Can I resize one image for multiple platforms at once?
Yes — you can run the same source photo through several presets in one session, which is faster than cropping separately for each network in a full image editor.
Does it preserve transparency for logos or overlays?
PNG transparency is preserved when the output stays PNG; switching to a preset that exports as JPEG will flatten transparent areas onto a solid background.
Are my photos uploaded to create these resized versions?
No — all cropping and scaling happens locally in your browser, so nothing is sent anywhere just to fit a preset.
Will resizing to a social preset make my file too large to upload?
Resizing changes pixel dimensions, not compression level, so a very high-resolution source can still produce a large file at a given preset — pair this with an image compressor afterward if the platform also enforces a KB limit.
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