How to resize an image for social media
- Choose a picture or drag it onto the box.
- Pick a fit. Fill and crop covers the whole frame. Fit whole image keeps everything and adds a background.
- For fill and crop, use zoom and the two position sliders to choose what stays in the frame.
- Tick the sizes you need. Previews update at once.
- Press Download on one card, or Download all (ZIP) for every size.
Built-in sizes
| Platform | Size | Pixels |
|---|---|---|
| Post square, post portrait 4:5, story or Reel | 1080 × 1080, 1080 × 1350, 1080 × 1920 | |
| Shared link, portrait post, cover photo, story | 1200 × 630, 1080 × 1350, 851 × 315, 1080 × 1920 | |
| X (Twitter) | Post image, header, profile picture | 1600 × 900, 1500 × 500, 400 × 400 |
| Post image, profile banner, profile picture | 1200 × 627, 1584 × 396, 400 × 400 | |
| YouTube | Thumbnail, channel banner | 1280 × 720, 2560 × 1440 |
| Pin | 1000 × 1500 | |
| Status, profile picture | 1080 × 1920, 500 × 500 |
Tips for better results
- Start from the largest copy of your picture. Making a small image bigger makes it soft.
- Use fit with a blurred background for logos, screenshots and posters that must not be cut.
- Choose JPG for photos and PNG for graphics with text. WebP files are small, but not every site accepts them for upload.
- Keep faces and text away from the edges. Platforms crop and cover corners with buttons.
- Need one exact size? Use the Image Resizer.
Limits to know about
- Sizes are the ones commonly recommended in November 2026. Platforms change them, so check the current guide before a big campaign.
- Platforms compress uploads again, so results can look slightly different after posting.
- Pictures over 40 MB or 80 megapixels are refused to protect your browser.
- The blurred background needs browser support. Where it is missing the background turns white.
- The tool resizes and crops. It does not edit text, remove backgrounds or add safe zone guides.
Privacy
Your picture never leaves your device. Resizing, previews and the ZIP file are made in your browser.
Frequently asked questions
Which size is best for an Instagram post?
1080 × 1080 for a square post and 1080 × 1350 for a portrait post.
Does resizing reduce quality?
Making a picture smaller keeps it sharp. Making it much bigger makes it soft. PNG does not lose quality when saved. JPG and WebP lose a little.
Can I use a custom size?
Yes. Tick custom size and enter a width and height from 16 to 4000 pixels.
What does fill and crop do?
It scales the picture until it covers the frame, then cuts the extra. You choose which part stays with the position sliders.
Which file type should I upload?
JPG or PNG are accepted almost everywhere. Use WebP only where the site allows it.
Is there a watermark?
No. The tool is free and needs no sign up.
About this tool
ToolsRiver Social Media Image Resizer is free and needs no sign up. It resizes in your browser and builds the ZIP file there too.