LetterBox Shaders adds two black bars to recreate the cinematic letterbox effect. A vanilla-like pack by DevGangwar, tuned for potato-tier hardware and better. Compatible with Iris and OptiFine across Minecraft 1.19 – 26.2. Licensed MIT, so the download is mirrored right here on MineSpecs — no ads, no redirects.

How to install LetterBox

1. 1Install a shader loader for Minecraft 1.19 – 26.2 — Iris (pairs with Sodium) or OptiFine. LetterBox is a shaderpack, so it needs a loader to run.
2. 2Download the LetterBox .zip from the button above — keep it zipped. It is mirrored on MineSpecs, so there is no ad-gate or redirect.
3. 3Drop the .zip into your .minecraft/shaderpacks folder (%appdata%\.minecraft\shaderpacks on Windows, ~/Library/Application Support/minecraft/shaderpacks on macOS).
4. 4Launch the game, open Options → Video Settings → Shaders, and select LetterBox.

First time? How to install Minecraft shaders

Performance & what to expect

LetterBox is rated potato performance impact. It is the lightest tier in the catalogue — it runs on integrated graphics and older laptops. The look is vanilla like.

More vanilla like shaders

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LetterBox is created by DevGangwar and mirrored here under its MIT licence. MineSpecs is an unofficial fan project and is not affiliated with DevGangwar, Mojang Studios or Microsoft.