How to Resize Images for Social Media

A practical guide to preparing photos for feeds, profiles, and posts — without desktop software.

Why social platforms care about size

Every network compresses and crops uploads. If you send a huge camera original, the platform will shrink it anyway — often with less care than you would use yourself. Preparing the right width and aspect ratio before upload gives cleaner results, faster uploads, and fewer awkward crops on profile photos and cover images.

General workflow

  1. Decide where the image will appear (profile, post, story, banner).
  2. Check the platform’s current recommended dimensions (they change over time).
  3. Open the free Resize Image tool on Site95.
  4. Set width (or percentage), keep aspect ratio if needed, and download.
  5. Optionally compress for a smaller file before uploading.

Typical use cases

Profile photos: Square frames are common. Start from a clear face crop, then resize to the platform’s recommended square size so the face stays centered.

Feed posts: Landscape and portrait ratios differ. Resize to the width you need, then confirm the crop preview in the social app before publishing.

Banners and headers: Wide images look soft if they are too small, and waste bandwidth if they are enormous. Match recommended width and keep a high-quality master offline.

Step-by-step on Site95

1. Open Resize Image

Go to Resize Image. No account is required.

2. Upload your photo

Drop a JPG, PNG, WebP, or other supported format. Processing stays in your browser.

3. Enter dimensions

Type a target width or use a percentage. Keep aspect ratio enabled unless you intentionally want a stretch.

4. Download and upload to the network

Preview the result, download, then upload to Instagram, LinkedIn, Facebook, X, or another app. If the file is still heavy, run Compress Image.

Quality tips

  • Never upscale a tiny image and expect sharp results
  • Export photos as JPEG or WebP for most social posts
  • Keep text in graphics large enough to read on mobile
  • Store the original master; publish the resized copy

Privacy

Site95 does not upload your photos for resize. That matters when you are preparing personal family pictures or client work. For format changes, see how to convert PNG to JPG.

Try it now

Open the free image resizer and prepare your next post in under a minute.

Frequently Asked Questions

Should I crop or only resize?

If the aspect ratio does not match the platform, crop first or accept letterboxing. Resizing alone keeps the full image but may leave empty space in the frame.

What resolution do I need?

Match the platform’s recommended pixel width when possible. Extra pixels rarely improve mobile feeds and only make the file heavier.

Does Site95 upload my photos?

No. Resize runs in your browser. Your images stay on your device.