Social Media Image Resizer

• Fully client-side. Images are read, cropped, resized and encoded locally using the HTML5 Canvas API. Nothing is uploaded, stored, or logged.
• No tracking of content. The tool does not record which images you load or what size you export. There is no analytics on image content.
• No automatic saving. Images are held in memory only. Reloading the page clears everything.
• Format support. JPG, PNG, WebP and GIF are accepted on input (GIF is treated as a static frame). Output is limited to PNG, JPG and WebP because those are what the browser can encode natively.
• Large images. Very large source files (over ~6000 px on a side) may slow the browser because all work happens in memory. If that happens, resize the image first or use a smaller source.
• Upscaling softens details. If the source image is smaller than the target preset, the resizer must upscale. Always start from the highest-resolution source you have.

A practical guide to social media image sizes

Every social platform has its own idea of the ideal image size, and getting it wrong has visible consequences: awkward crops in feeds, blurry thumbnails, or a banner that leaves large empty margins. A dedicated resizer that lets you crop and export for each platform is faster than reworking the same image five times in a general-purpose editor.

Recommended sizes at a glance

• Instagram — 1080 × 1080 for square posts, 1080 × 1350 for portrait, 1080 × 566 for landscape, 1080 × 1920 for stories and reels, 320 × 320 for profile pictures.
• YouTube — 1280 × 720 for thumbnails, 2560 × 1440 for channel banners (with a safe area of 1546 × 423 in the middle), 800 × 800 for channel icons.
• TikTok — 1080 × 1920 for vertical video, 1080 × 1080 for square, 200 × 200 for profile pictures.
• LinkedIn — 1200 × 627 for shared posts, 1584 × 396 for company banners, 400 × 400 for profile pictures, 1128 × 191 for personal banners.
• Facebook — 1200 × 630 for shared links, 1080 × 1080 for square posts, 820 × 312 for page covers, 170 × 170 for profile pictures.

Choosing the right format

For photographs, JPG at high quality is a good default: small file, natural-looking gradients, and no transparency needed. For graphics, logos, screenshots or anything with sharp edges and flat colour, PNG gives you lossless quality and crisp text. WebP is the modern choice when you need both good compression and transparency — it is supported by every current browser and by all the major social platforms as an upload format.

Why cropping matters more than resizing

Resizing alone changes the dimensions of an image without changing its composition. Cropping changes what part of the image ends up in the final frame. A square Instagram post cut from a landscape photo will either include the whole width with large letterbox areas, or a tightly cropped section. Being able to drag the crop and see the result live is the difference between a picture that looks intentional and one that looks accidental.

Common mistakes to avoid

• Uploading a source that is too small. If the source is smaller than the target, the resizer must upscale. Start from the largest version you have.
• Using JPG for text-heavy images. JPG compression creates visible artifacts around sharp edges. Use PNG or WebP for graphics with text.
• Forgetting the safe area on banners. Many platforms crop banners differently on desktop and mobile. Keep important content within the safe area shown in the platform's own guidance.
• Over-compressing. A JPG at 60% quality saves space but can look noticeably worse. For most images, 80–92% is the sweet spot.

About this tool

This image resizer is part of the TempScript free online tools collection. It runs entirely in your browser, requires no account, and never sends your images anywhere. If you work with images and text regularly, you may also find our Base64 encoder and decoder and QR code generator useful for embedding assets and creating shareable links.