Post Resizer
Resize for every platform
Drop your image here
or click to browse · JPG, PNG, WebP, GIF up to 50MB
Resize posts for every platform in seconds
Upload one image and get perfectly sized versions for Instagram, Facebook, Twitter, LinkedIn, TikTok, YouTube, and Pinterest — 50+ presets, batch resize, no signup, no watermark.
Every dimension you need
Pre-configured presets for all major social media image sizes — always up to date.
Instagram Square
1080 × 1080 · 1:1
Instagram Portrait
1080 × 1350 · 4:5
Instagram Story
1080 × 1920 · 9:16
Facebook Post
1200 × 630 · 1.91:1
Facebook Cover
1640 × 856 · 1.91:1
Twitter/X Post
1600 × 900 · 16:9
Twitter/X Header
1500 × 500 · 3:1
LinkedIn Banner
1584 × 396 · 4:1
TikTok Cover
1080 × 1920 · 9:16
YouTube Thumbnail
1280 × 720 · 16:9
YouTube Banner
2560 × 1440 · 16:9
Pinterest Pin
1000 × 1500 · 2:3
Everything you need to resize
Professional-grade resizing tools that work entirely in your browser.
50+ platform presets
Every social media dimension pre-configured — Instagram, Facebook, Twitter/X, LinkedIn, TikTok, YouTube, Pinterest, and more.
Batch resize
Upload once, export for every platform. Generate all sizes in a single click instead of resizing one by one.
Visual crop editor
Drag, zoom, and reposition with live preview. Lock aspect ratios or customize freely before exporting.
Instant processing
All resizing happens in your browser with zero upload time. Get results in milliseconds, not minutes.
100% private
Your images never leave your device. No server uploads, no tracking, no data collection whatsoever.
Multiple export formats
Export as JPG, PNG, or WebP with adjustable quality settings for the perfect balance of size and clarity.
Why creators choose this resizer
Save hours per week
Stop manually resizing in Photoshop or Canva. One upload, every dimension, done in seconds.
Never get cropped again
Platform-exact dimensions mean your posts always display perfectly — no awkward cutoffs or stretched images.
Boost engagement
Properly sized images perform better in feeds. Algorithms favor correctly formatted content with higher display quality.
One tool, every platform
Stop juggling 6 different resizing tools. SocialKit covers every platform you post on from a single page.
No signup, no watermark
Open the page and start resizing. No account, no email, no watermark on your exports. Ever.
Works on any device
Resize on your phone, tablet, or desktop. The tool adapts perfectly to any screen size.
Resize in 4 simple steps
From upload to download in under 30 seconds.
Upload your image
Drag and drop or browse to upload any JPG, PNG, WebP, or GIF file. Files up to 50MB are supported.
Choose target platforms
Select one or multiple platforms from 50+ presets. Each preset is pre-configured with the exact dimensions and aspect ratio.
Crop and adjust
Use the visual editor to reposition, zoom, and frame your image. Preview exactly how it will look on each platform.
Export and download
Download individual sizes or all at once as a ZIP. Choose your format and quality — no watermark, no signup.
Who uses this tool?
Social Media Managers
Resize one campaign asset for 8+ platforms in under a minute. Keep brand consistency while meeting every platform's requirements.
Content Creators
Post the same photo to Instagram, TikTok, YouTube, and Pinterest without re-editing each time. Perfect cross-platform repurposing.
Small Businesses
No design team? No problem. Resize product photos and promotional graphics for every channel without expensive software.
Marketing Agencies
Batch resize client deliverables for omnichannel campaigns. Deliver platform-perfect assets faster than ever.
Get the most from your resized images
Start with the largest dimension
Always design or upload at the highest resolution possible, then resize down. This prevents pixelation and keeps your images crisp on every platform.
Use 4:5 for Instagram feeds
The 4:5 portrait ratio (1080×1350) takes up more screen space in the Instagram feed than square posts, increasing visibility and engagement.
Keep safe zones in mind
Platforms like Facebook and LinkedIn crop cover images differently on mobile vs desktop. Keep important elements centered to avoid cutoffs.
Export as WebP for smaller files
WebP format delivers 25-35% smaller file sizes than JPG at the same quality, which means faster uploads and better page load speeds.
Batch resize for consistency
Upload once and export for every platform simultaneously. This ensures visual consistency across all your social channels.
Test on mobile before posting
Over 80% of social media browsing happens on mobile. Always check how your resized image looks on a phone screen before publishing.
SocialKit vs. other resizing tools
Frequently asked questions
What image sizes does the Cross-Platform Post Resizer support?
Is the Cross-Platform Post Resizer free to use?
Can I resize one image for multiple platforms at once?
Does the resizer work on mobile devices?
Will my images lose quality after resizing?
Are my uploaded images stored on a server?
What file formats are supported?
Can I crop and reposition images before resizing?
Ready to resize for every platform?
Start resizing your images now — free, no signup, no watermark. Perfect posts for every platform in seconds.