OJapp Splitter Mobile Guide: How to Cleanly Split Photos on Your Phone (Square & 3:4 Only)

Last updated: 2026/02/05

OJapp Splitter is a lightweight web tool designed to split photos on smartphones using only two essential aspect ratios:
Square and 3:4.
No app installation is required, and the entire process runs on your device, making it fast, private, and easy to use.
This guide explains how to make the most of Splitter on your phone.

Why OJapp Splitter Uses Only “Square” and “3:4”

Unlike many image-editing apps that offer every possible aspect ratio, OJapp Splitter intentionally limits the options to two:

• Square: Ideal for icons, SNS thumbnails, profile photos
• 3:4: Matches almost all smartphone photos and feels natural

These two ratios cover more than 80% of real-world mobile use cases, allowing the tool to stay fast, simple, and high quality.

4 Practical Mobile Use Cases for OJapp Splitter

1. Create perfectly aligned Instagram posts

Instagram looks simple, but its automatic cropping is strict and often unpredictable.
Using the 3:4 ratio keeps compositions stable and prevents accidental cropping.

With OJapp Splitter, you can easily create:

• 3-split vertical posts
• 6-split tall layouts

Your images will stay aligned when previewed on your feed, reducing the “why does it look slightly off?” problem.

2. Check and adjust wallpaper composition

Smartphone wallpapers never display exactly as you see them—iPhones especially crop the top and bottom slightly.
Splitting an image into Square or 3:4 helps you visualize which areas will be safely visible.

This is particularly useful for lock screens that require extremely precise placement.

3. Make Before/After comparison images instantly

Beauty, DIY, cooking, and review posts often need a simple “side-by-side” comparison.
With Splitter:

Square + 2-split = perfect Before/After collage in one tap.

No editing apps, no complex layouts—just clean, consistent output.

4. Organize photos by unifying aspect ratios

Your camera roll may contain photos in many different aspect ratios, making feeds or albums look inconsistent.
If you want a uniform aesthetic—especially for Instagram grids—use:

• Square for a unified grid look
• 3:4 for natural photo layouts

Splitter helps you standardize everything quickly.

Tips for Using Splitter Smoothly on Smartphones

1. “Long-press → Save to Photos” is the fastest method

When saving split images on iPhone or Android, long-pressing the output image and choosing
“Save to Photos”
is the quickest and most reliable way.

2. Avoid using the browser’s “Download” feature

Especially on iPhones, downloaded files often go into the Downloads folder—not the Photos app—causing confusion.
Long-press save ensures the images go directly to the camera roll.

3. 3:4 is the safest ratio for SNS use

If you’re unsure which ratio to choose for social posts, 3:4 is the most platform-friendly and least likely to be cropped unexpectedly.

Unlimited Split Counts—Even on Mobile

While aspect ratios are limited to Square and 3:4, the number of splits is unlimited:

• Single crop
• 2-split comparison
• 3-split Instagram vertical layouts
• 9+ splits for design and grid layouts

OJapp Splitter remains lightweight because it handles all processing locally, making it one of the fastest mobile-friendly splitters available.

Conclusion: A Simple, Fast, Mobile-Optimized Splitter

OJapp Splitter focuses on what matters most for smartphone users:
simplicity, speed, and clean output.

With only two essential ratios—Square and 3:4—it handles:

• SNS posting
• Wallpaper composition
• Photo organization
• Before/After comparisons

All without installing an app.

👉 Try OJapp Splitter