Can’t Resize in Canva Free? Validate & Fix Your Ad Sizes Instantly
Stop paying for Canva Pro just to resize. Use our interactive validators to check dimensions, weight limits, and safe zones for 50+ platforms.
Get the 2026 Ad Size Cheat Sheet.
Your shortcut to pixel-perfect Canva designs.
How It Works
From Upload to Correctly Sized Ad — in Minutes. The full workflow from Canva export to platform-ready ad, using only free tools on this site.
Choose your tool
Use a Safe-Zone Validator to check your design visually, or an Ad Size Validator to check and correct pixel dimensions.
Export from Canva & upload
Export your design from Canva as a PNG or JPG, then upload it directly into the tool. No account needed, no watermarks.
See the result instantly
Safe-Zone tools show the overlay on your image. Ad Size tools show whether your dimensions match the required spec — with the exact detected size displayed.
Wrong size? Click “Crop to button”
If the size is incorrect, click the Crop to button to instantly reach the required size and file weight (150KB).
Download Approved Size
Download your correctly sized ad ready to use — all without leaving this site.
Two Ways to Validate
Interactive Overlays
Upload your design and see the platform UI (buttons, text, profile pics) overlaid on your creative.
- TikTok In-Feed Safe Zones
- Instagram Stories UI Check
- Facebook Event Cover Guides
Dimension Validation
Check your file against IAB and Social standards. If it’s wrong, we’ll fix the canvas size for you.
- Google Display (All 22 Sizes)
- Social Feed Validators
- 150KB Weight Limit Check
Stop Guessing. Start Knowing.
Keep every current social media ad spec right at your fingertips.