JA Tool

LineBreak Doctor: Guide

Normalize line breaks and spacing so your post doesn’t collapse on social platforms.

What it does

Fixes line breaks/blank lines that disappear after copy & paste
Targets common platforms: Instagram / X / LINE / Facebook / LinkedIn
Outputs a post-ready version you can copy
Browser-only, no storage

Open the tool 日本語ガイド

Common problems

Blank lines collapse into a single paragraph
Line breaks differ depending on where you wrote the text
The same text looks different across platforms

Keywords: fix line breaks, Instagram line breaks, X line breaks, LINE spacing, text formatting for social posts

How to use

Paste your text
Choose a preset/normalization option (if available)
Copy the output and paste into your post

Tip: pick one target platform first and optimize for that one.

Notes (limits)

Platforms can change behavior; results may vary over time.
Emoji and special characters can affect layout.
Always preview before posting.