Name: ImageSmith
Rating: 4.9 (1247 reviews)
Author: ImageSmith

Question 1

What is the 9:16 aspect ratio used for?

Accepted Answer

The full-screen mobile portrait ratio — used for Instagram Stories, TikTok, Snapchat, Reels, and any content designed for phone screens held vertically. Common use cases include: Instagram Stories, TikTok photos, Snapchat, Reels covers, mobile wallpapers.

Question 2

What pixel dimensions should a JPEG image be at 9:16 ratio?

Accepted Answer

Common 9:16 dimensions include: 1080×1920, 720×1280, 540×960. Choose the size that matches your target platform's requirements.

Question 3

How do I optimize a JPEG image in 9:16 format?

Accepted Answer

Upload your JPEG image to ImageSmith and set a target file size. The tool compresses to any size while maximizing quality — browser-only, no uploads.

Question 4

What format is best for 9:16 JPEG images?

Accepted Answer

JPEG works well for photographs. WebP is often 25–35% smaller for the same 9:16 image content.

Crop JPEG Images to 9:16 (Vertical / Portrait)

Other JPEG Aspect Ratios

Crop JPEG to 9:16 — FAQ