rsz.app logo - AI-powered image resizer tool
rsz.appby Spectracular
For Creators & Designers

One Image. Every Platform.
No Cropping. No Distortion.

Resize your photos and designs for Instagram, YouTube, TikTok, and more. AI preserves your subjects perfectly — no awkward crops, no manual editing.

2h
Manual resize
30s
With rsz.app
Instagram
1080×1080, 1080×1920, 1080×566
YouTube
2560×1440, 1280×720
TikTok
1080×1920, 1920×1080
LinkedIn
1200×1200, 1200×627
Pinterest
1000×1500, 1080×1920
Twitter/X
1200×675, 1500×500

Stop fighting with aspect ratios

Every platform wants different sizes. Manual cropping cuts off faces, text, and important details. Our AI fixes that.

The frustration

Manual resizing is tedious

📐Instagram wants square, YouTube wants landscape, TikTok wants vertical...
✂️Cropping cuts off faces, text, and important elements
🐌Hours spent in Photoshop or Canva for one image
😤Different versions get messy and inconsistent
The solution

AI-powered smart resizing

AI keeps subjects in frame — faces, text, products
One upload → all platform sizes instantly
Batch process multiple images at once
Works in your browser, no software needed
15+
Platform presets
50
Images per batch
Free
To try
"

I used to spend hours resizing content for different platforms. Now I just upload once and get perfect versions for Instagram, Pinterest, and LinkedIn in seconds.

AL
Amanda Lee
Content Creator, 150K followers

Resize for every platform in seconds