---
title: "Free Roblox Thumbnail Maker — Avatar Renders in Your Browser"
description: "Free Roblox thumbnail maker — pose your avatar in 3D and export render-ready PNGs. No Blender, no install."
url: "https://www.renderbux.com"
section: core
updated: 2026-09-17
keywords: ["roblox thumbnail maker", "roblox avatar render", "roblox poses"]
summary: "Renderbux is a free browser-based Roblox avatar studio. The home page is the community pose gallery: open any published pose and it applies to your own avatar instantly, ready to re-light, re-frame and export as a thumbnail-ready PNG."
---

# Free Roblox Thumbnail Maker — Avatar Renders in Your Browser

**Renderbux is a free, browser-based Roblox avatar render and thumbnail studio: load your real rig by Roblox username, pose it in 3D, light it, and export thumbnail-ready PNGs. No Blender, no install, no signup to try.** Exports include 1920x1080 game thumbnails and 512x512 icons.

The home page is the community pose gallery. Every pose there was published by a creator, and opening one loads it onto *your* avatar — you re-light it, re-frame it and export it as your own render.

## Start here

- [Start a new render](/p/new) — free, no signup to try.
- [Browse and remix community poses](/) — the gallery on this page.
- [Thumbnail, GFX and icon makers](/make) — the same studio, sized for each Roblox surface.
- [Guides](/guides) — dimensions, GFX without Blender, and AI vs real renders.
- [Free GFX backgrounds](/backgrounds) — skyboxes you render against in-studio.

## What people make with it

- [Roblox game thumbnails](/make/roblox-thumbnail) at 1920x1080 (16:9)
- [Roblox game icons](/make/roblox-game-icon) at 512x512 (1:1)
- [YouTube thumbnails](/make/roblox-youtube-thumbnail) at 1280x720 (16:9)
- [Profile pictures](/make/roblox-pfp) for Discord, TikTok and YouTube, with transparent backgrounds

## FAQ

**What is Renderbux?**
Renderbux is a free, browser-based Roblox avatar render and thumbnail studio: load your real rig by Roblox username, pose it in 3D, light it, and export thumbnail-ready PNGs. No Blender, no install, no signup to try.

**Is Renderbux free?**
Posing, lighting, and the studio stay free. Signed out you get 1 PNG export a week; a free account gets 5 a week at 720p with a watermark. Renderbux Pro is $9.99 per month for unlimited renders.

**Do I need Blender?**
No. Renderbux runs in the browser on desktop and mobile. There is no rig import, no node editor, and nothing to download.

**Is this an AI thumbnail generator?**
No. Renderbux loads your real Roblox avatar by username and renders that rig. It does not invent a lookalike from a prompt.

---

Source: https://www.renderbux.com · Renderbux · Independent tool, not affiliated with Roblox Corporation.