Instagram Post Resizer – Square 1080x1080 & Portrait 1080x1350
Fit photos into Instagram's square (1:1) and portrait (4:5) dimensions without awkward edge cropping.
Drag & drop an image
or choose from your device
How to Use Instagram Post Resizer
Upload Photo
Select the photo you want to share on your Instagram feed.
Select Square or Portrait
Choose 1080x1080 px (1:1 square) or 1080x1350 px (4:5 portrait) preset.
Download Instagram Photo
Save your high-definition image ready to publish without quality loss.
About Instagram Post Resizer
Instagram automatically compresses and crops photos that don't conform to its supported aspect ratios. The 4:5 portrait ratio (1080x1350 px) commands the most vertical screen real estate in user feeds, while 1:1 (1080x1080 px) remains the classic grid staple.
Pre-resizing your photography prevents Instagram's aggressive server-side downsampling from ruining your photo's sharpness and vibrancy.
Common Use Cases
- Fitting full landscape photos into Instagram's square grid without cutting off subjects.
- Formatting portrait photography to 1080x1350 px for maximum feed visibility and engagement.
- Standardizing brand imagery across marketing and influencer campaigns.
Private & Secure Browser Processing
All processing is executed locally in your browser. Files are never transmitted or stored on remote servers.
Frequently Asked Questions - Instagram Post
What is the best photo resolution for Instagram posts?
Instagram displays photos at a maximum width of 1080 pixels. Sizing to 1080x1080 (Square) or 1080x1350 (Portrait) yields the sharpest rendering.
Why does Instagram make my photos look blurry?
If you upload an image wider than 1080px or in an unsupported ratio, Instagram's automatic compression algorithm aggressively compresses it. Pre-formatting here bypasses harsh re-compression.
Can I add white borders to fit full landscape shots?
Yes, using the 'Contain' fit mode will center your full landscape photo on a square canvas with clean borders.