---
title: "Space Avocado Wiki — Xiao Hong Shu and WeChat posting guides"
description: "Sourced, practical guides to composing posts for Xiao Hong Shu (RedNote) and WeChat Moments: cover sizes and aspect ratios, title and text length, and hashtag conventions."
canonical: https://space-avocado.com/wiki
updated: 2026-09-26
---

# Space Avocado Wiki — Xiao Hong Shu and WeChat posting guides

Practical, sourced guides to composing posts for **Xiao Hong Shu (RedNote)** and **WeChat Moments** — the channels most posting guides skip. Each article gives a quick answer first, a specs table, the details, an FAQ and its sources.

## Xiao Hong Shu (RedNote)

- [Xiao Hong Shu (RedNote) cover size and aspect ratios](/wiki/xiaohongshu-cover-size): 3:4 at 1080 × 1440 px, up to 18 images, and why the first image sets the shape of the whole note.
- [Xiao Hong Shu (RedNote) title length and title rules](/wiki/xiaohongshu-title-length): the 20-character limit, how to write a searchable title, and the absolute claims China's Advertising Law restricts.
- [Xiao Hong Shu (RedNote) hashtags and topics](/wiki/xiaohongshu-hashtags): picking topics (话题) from the list, 3–5 per note, and why keywords in the title and body matter more.

## WeChat Moments

- [WeChat Moments image size, grid cropping and video length](/wiki/wechat-moments-image-size): up to 9 photos, square thumbnails in the grid, and videos up to 5 minutes.
- [WeChat Moments text length and folding](/wiki/wechat-moments-text-length): no documented limit, but long text folds behind "Full text" (全文) — lead with the point.
- [WeChat Moments hashtags](/wiki/wechat-moments-hashtags): `#word` makes a tappable tag; one or two per post.

## Plan it with Space Avocado

Space Avocado plans Xiao Hong Shu and WeChat alongside Instagram, TikTok and Facebook, with China-timezone slots, captions per channel and native posting from your phone — US$9 a month after a 7-day free trial. See [Xiao Hong Shu and WeChat planning](/rednote-wechat-planner).