Free Social Media Post Maker Online
Every social platform has different image dimensions — and getting them wrong means cropped or blurry posts. ImgToolkit's Social Media Designer gives you preset sizes for Instagram, Twitter, Facebook, and LinkedIn. Add text and gradient backgrounds and download a perfectly sized image in seconds.
Quick Answer
Every social platform has different image dimensions — and getting them wrong means cropped or blurry posts. ImgToolkit's Social Media Designer gives you preset sizes for Instagram, Twitter, Facebook, and LinkedIn.
Try it now — free, no signup
Your images stay on your device. Nothing is uploaded to any server.
Step-by-Step Guide
4 steps · takes under 1 minute
Choose your platform
Select the social platform — Instagram square, Twitter banner, LinkedIn post, Facebook cover, and more.
Pick a background
Choose a gradient or solid color background.
Add text
Type your headline and subtitle with font size and color controls.
Download
Download the image at the correct pixel dimensions for your platform.
100% Private — Zero Uploads
ImgToolkit runs entirely in your browser using the Canvas API. Your images are never sent to a server, never stored in the cloud, and never seen by anyone else. This makes it safe for sensitive documents, client work, medical imagery, and confidential screenshots.
Pro tip
All processing happens in your browser using WebAssembly and the Canvas API. No files are sent to any server — your images stay completely private.
Format & File Size Comparison
Same 1080×1080px photo processed four ways
| Format | Quality | File Size | Notes |
|---|---|---|---|
| PNG (original) | Perfect | 4.2 MB | No compression — too large for web |
| Compressed PNG | Visually identical | 1.1 MB | −74% — transparency preserved |
| JPG (85% quality) | Excellent | 310 KB | −93% · Best for photos |
| WebP (85%)BEST | Excellent | 205 KB | −95% · Recommended for web |
Based on a 1080×1080px photo. Results vary by image content and complexity.
Related Free Tools
All tools run in your browser — no account or upload needed
Frequently Asked Questions
2 questions answered
Ready to get started?
Free, instant — your files stay on your device. Always.
Create Social Post Free