Flash Compatibility Checker

What this checker tests

Adobe Flash Player itself was retired in December 2020 — no modern browser runs it, and you should never download old installers. But Flash content still runs beautifully through the Ruffle emulator. This tool checks, in one click, whether your browser has everything Ruffle needs.

Understanding each check

1. Browser detected

Identifies which browser you’re using. Every current version of Chrome, Firefox, Edge, Safari, Opera, Brave and Samsung Internet supports Flash content through Ruffle.

2. WebAssembly

This is the engine room. Ruffle is written in Rust and compiled to WebAssembly (WASM) — a fast, sandboxed code format that browsers run at near-native speed. Without WASM, Flash emulation is impossible. All browsers released since roughly 2017 include it.

3. WebGL graphics acceleration

Flash games are graphics-heavy. WebGL lets Ruffle draw them using your device’s GPU instead of the slower CPU. Ruffle can fall back to software rendering without it, but games run far smoother when this check is green.

4. Secure connection

Confirms you’re on HTTPS. Modern browser features — including parts of WASM and all camera/permission APIs — only work on secure connections.

Minimum browser versions for Flash content

Browser	Minimum version	Status today
Chrome	57+	Fully supported
Firefox	52+	Fully supported
Microsoft Edge	16+	Fully supported
Safari	11+	Fully supported
Opera / Brave	Current	Fully supported

In short: unless your device is running a browser that hasn’t been updated in many years, you can run Flash content today.

What to do if a check fails

1. Update your browser — this fixes almost every red result. Look in your browser’s menu under Help → About, which triggers the update automatically.
2. WebGL red but WASM green? Your graphics driver may be outdated or blocklisted. Update your GPU drivers, or simply proceed — Ruffle will still work in software mode.
3. On a very old device? Firefox tends to support WebAssembly on the widest range of older hardware.
4. Everything green but Flash still won’t play? The problem is the file or an ad blocker, not your browser — see the troubleshooting list on our Online Flash Player page.

Frequently asked questions

Do I need to install Flash Player if all checks pass?

No — that’s the whole point. Green checks mean your browser can run Flash content through Ruffle with nothing installed. Anyone telling you to download “Flash Player” in 2026 is pointing you at malware.

Why did browsers remove Flash support?

Flash Player had a long history of critical security vulnerabilities, and open web standards (HTML5, WebGL, WASM) matured to replace everything Flash did. Adobe ended support on December 31, 2020, and browsers removed it shortly after.

Does this checker work on phones?

Yes — it tests mobile browsers the same way. Modern Android Chrome and iOS Safari both pass all checks.

My work computer fails the checks. Why?

Corporate IT policies sometimes disable WebAssembly or WebGL. You’ll need to ask your IT department, or use a personal device.