Social Media Image Editor — Resize for All Platforms
Every social platform has its own image dimension requirements. An Instagram square, a Facebook link preview, a LinkedIn banner, and a YouTube thumbnail all need different sizes — and uploading the wrong dimensions means cropped edges, blurry resizes, or rejected posts. A dedicated social media image editor solves this by giving you preset dimensions for every platform so you can export correctly sized images without memorizing spec sheets.
Keynou's social media image editor includes updated presets for all major platforms, runs entirely in your browser, and costs nothing to use.
Platform-Specific Image Dimensions
Here are the current recommended dimensions for the major platforms. These are based on each platform's official guidelines as of 2026.
| Platform | Image Type | Dimensions (px) | Aspect Ratio |
|---|---|---|---|
| Feed square | 1080×1080 | 1:1 | |
| Feed portrait | 1080×1350 | 4:5 | |
| Story / Reel | 1080×1920 | 9:16 | |
| Link preview | 1200×630 | 1.91:1 | |
| Cover photo | 820×312 | 2.63:1 | |
| Twitter / X | Post image | 1600×900 | 16:9 |
| Twitter / X | Header | 1500×500 | 3:1 |
| Post image | 1200×627 | 1.91:1 | |
| Cover banner | 1584×396 | 4:1 | |
| YouTube | Thumbnail | 1280×720 | 16:9 |
| YouTube | Channel banner | 2560×1440 | 16:9 |
Safe Zones Matter
Platforms don't just resize — they crop. Instagram shows feed posts at 1:1 in the grid but 4:5 in the feed. Facebook crops link previews differently on mobile versus desktop. When you design an image, keep critical content — text, logos, faces — within the central safe zone so nothing important gets cut off on any device.
Using Preset Templates
The editor's preset templates handle the dimension math for you. Here's the typical workflow:
- Upload your image — drag and drop or browse
- Select a platform preset — Instagram square, Facebook cover, YouTube thumbnail, etc.
- Adjust the crop position — the aspect ratio is locked, but you can reposition
- Apply filters or text if needed
- Export — download the correctly sized image
For Instagram specifically, the Instagram image editor offers feed, story, and reel presets with safe-zone overlays so you can see exactly what will be visible in each context.
Batch Export for Multiple Platforms
If you need the same image sized for several platforms — say, an announcement that goes on Instagram, Facebook, and Twitter — exporting each size individually is slow. Batch export lets you configure multiple presets at once and generate all variations from a single source image.
This is particularly useful for:
- Cross-platform campaigns: One promotional image needs to work as an Instagram square, a Facebook link preview, and a Twitter card.
- Content repurposing: Turn a YouTube thumbnail into a blog header and a social post in one pass.
- A/B testing: Export the same creative at multiple sizes to test which performs best.
The image resizer handles the underlying scaling, while the social media editor adds the platform-specific presets on top.
How This Compares to Canva
Canva is the most well-known social media design tool, and it's powerful — but it's not always the right choice for quick resizing tasks. Here's an honest comparison:
| Feature | Keynou Editor | Canva |
|---|---|---|
| Cost | Free, no signup | Freemium, signup required |
| Privacy | Browser-based, no upload | Server-based, files stored |
| Speed | Instant, no load times | Cloud rendering, depends on connection |
| Templates | Dimension presets | Full design templates |
| Collaboration | Single user | Real-time collaboration |
| Best for | Quick resizing, cropping, filters | Complex designs with text and graphics |
If you need multi-element designs with text, shapes, and stock graphics, Canva's template library is hard to beat. But if you just need to resize a photo to Instagram dimensions, apply a filter, and download — a browser-based editor does it faster, privately, and without an account.
Design Tips for Each Platform
Square (1:1) posts perform best in the grid view. If your image is landscape, crop to the center or use the 4:5 portrait format, which gets more screen space in the feed. Avoid putting text near the bottom edge — the caption area overlaps it.
Link previews use 1.91:1 and appear small in the feed. Use bold, high-contrast imagery with minimal text. Facebook's cover photo displays at 820×312 on desktop but gets cropped on mobile, so keep the center clear.
Twitter / X
16:9 images display inline at full width. Twitter compresses images aggressively, so start with a high-resolution source and avoid fine detail that will turn to artifacts.
Professional context means cleaner, less flashy imagery. The 1200×627 post image is similar to Facebook's, so you can often reuse the same asset. Cover banners are wide and short — design them as a panoramic strip.
YouTube
Thumbnails are the single biggest click-through factor. Use 1280×720 with high contrast, large text, and an expressive face if possible. YouTube displays thumbnails small in search results, so test readability at a small size.
Start Editing
Open the social media image editor, pick a platform preset, and export a perfectly sized image in seconds. No account, no upload, no watermark. For the official dimension specifications, refer to Facebook's sharing documentation and Twitter's media guidelines.
