AtomChat

A phone-app style chat experience for Minecraft, powered by Skia.

AtomChat is a brand-new chat beautification mod developed in the spirit of E33Chat. It turns the vanilla chat screen into a standalone "phone app" style chat panel: rounded bubbles, custom avatars, real player names, emoji / kaomoji / stickers, image messages, copy & quote, multi-line input, QQ-style motion — plus more screens beyond chat. A spiritual sequel (jk).

Rendering uses Skija. Every interface is vector-drawn and does not depend on vanilla chat textures.

Vanilla Improvements

• 💬 Chat bubbles & avatars — your messages show on the right, everyone else's on the left, with real player names and round skin avatars
• 🧹 Clean vanilla HUD placeholders — outside the panel, image codes show as a green [Image] and quotes as a blue [Quote]
• 📝 Multi-line input — the composer shows up to two lines and scrolls internally when longer; Up/Down arrows move between lines, while single-line drafts keep the vanilla chat history
• 🧠 Message capture — real player identity is captured from MessageHandler's three channels; unknown messages degrade to system text
• 📑 Chat history — when enabled, saved per server / world on disk, restored on rejoin, with configurable auto-cleanup

Features

• 🖼️ Image messages — renders [[CICode]] natively, interoperable with the E33Chat / ChatImage family; images keep their aspect ratio and can be saved via right-click
• 📤 Local image sending — pick with the image button, drag into the window, or paste with Ctrl+V; the picker opens in Details view with inline thumbnails
• 😊 Emoji / kaomoji / stickers — three tabs with a sliding indicator and full-width push transition; sticker packs are stored locally (png/jpg/jpeg, up to 10)
• 🔗 Rich text messages — colors, underlines, click & hover events: /tell, coordinates, FTB accept/deny and external links are all clickable; bare URLs become links automatically
• 📋 Copy / quote reply / save — right-click a bubble to copy or quote; image bubbles also offer "Save"
• 🧭 @ / block / profile / tp / whisper — right-click an avatar for @, block, whisper and quick teleport; a single click opens the player's profile
• 🪢 Private chat — the chat list shows currently online players; click one to open the conversation, right-click for its menu
• ⚡ Quick phrases — the lightning button on the composer opens your phrase list; tap to insert into the input
• 🎨 Skia vector UI & motion — rounded bubbles, blurred backgrounds, scrolling and QQ-style slide-in animations are all vector-drawn
• 📱 Custom wallpaper / avatar — upload a local image, crop it, and use it as the interface background or your avatar
• 🌍 Localization — Simplified Chinese and English; switch the Minecraft language to apply
• 😍 Highly configurable — appearance, colors, preferences and more

Configuration & Storage

• Path — .minecraft/config/atomchat/ holds atomchat-client.json plus the avatar / debug / emotes / history / wallpaper folders
• [Recommended] In-game settings page (tile home: Appearance / Chat / Privacy & blocking / About) — every option applies and persists instantly, no restart. Color rows ship with preset palettes, a + custom picker and live previews
• Config file — edit atomchat-client.json directly (generated on first launch; restart the game after manual edits)
• Chat history — written to /history when enabled, per world / server
• Custom wallpaper — stored under /wallpaper
• Custom avatars — stored under /avatar
• Sticker packs — stored under /emotes

Compatibility

Known Limitations

• Fabric / NeoForge 1.21.1 only; the Skija Windows x64 native is bundled — Linux / macOS builds are not packaged yet (cannot run)
• Images upload to the third-party host uguu.se by default and expire after about 3 hours; no server-side media hosting yet (planned)
• No E33Chat whisper sidebar, search, etc. yet
• Player identity resolution is best effort: tell-click structured capture, offline seen cache, multi-tier ownDisplayName fallback; extreme unknown formats fall back to gray text

Privacy & Data

• Local images you send are uploaded to a third-party host (uguu.se by default) and can be saved by others — do not send sensitive or private content
• Your messages can be saved by players who enabled chat history — do not send sensitive or private content
• The mod uploads no telemetry / personal information
• Image uploads happen only when you actively pick / paste / drop an image
• Local config and sticker packs stay in .minecraft/config/atomchat/ and never sync automatically

FAQ

Do I need a server? — No. AtomChat is client-only, but installing it server-side enables the custom avatar feature.

How do I send images? — Click the image button to pick a local image, or drag one into the window / Ctrl+V paste; the upload is inserted into the draft automatically, then press Enter to send.

Why is a message shown as gray system text? — When the client cannot be confident it came from a player, it is conservatively rendered as system text (e.g. nick plugins using unparseable formats).

Where are stickers stored? — .minecraft/config/atomchat/emotes/, up to 10, png / jpg / jpeg.

How do I change colors / sizes? — Adjust them live in Settings → Appearance (presets + custom picker); or edit config/atomchat/atomchat-client.json and restart the game.

Can I use it in a modpack? — Yes. If your modpack distributes the JAR, please keep the third-party notices.

Changelog

See the GitHub CHANGELOG.

Feedback

Found a bug or have a suggestion? Open an issue, or leave a comment on this page.