A community tool for Sanctuary

D4 Filter Forge

Build, edit and share Diablo 4 loot filters in the browser. Generates the official Base64 import codes the game accepts — no game memory access, no overlay, just the wire format.

Open editor How it works

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No install

Runs entirely in the browser. Paste the generated Base64 code straight into the game's filter screen.

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Live preview

Configure a test item and see exactly which rule fires — updated in real time as you edit.

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Shareable

The full filter state is encoded in the URL. Copy the link and share it on Discord or Reddit.

Basics

What is a Diablo 4 loot filter?

Diablo 4 drops hundreds of items every hour. A loot filter lets you define rules that control exactly which items are shown on screen, which ones are highlighted, and which are hidden entirely. Instead of sifting through a pile of grey and white vendor trash, you see only the items that matter for your build.

Since the 2.1 patch, Diablo 4 supports loot filters natively — no third-party software, no memory reading, no overlays. Filters are stored as a compact Base64-encoded string that you paste directly into the in-game filter import screen (Settings → Gameplay → Item Filter). The game parses the string and applies your rules instantly.

D4 Filter Forge gives you a visual editor for that format. You build your rules in a browser UI, then click Copy import code to get the Base64 string ready to paste into the game. No files, no launcher, no install.

Workflow

How it works

1
Open the editor
Click "Open editor" above. You start with an empty filter — or paste an existing Base64 import code to load your current filter and keep editing.
2
Add rules
Each rule targets a combination of item properties: slot, rarity, item power, affixes, and more. Set the conditions, then choose how matching items should appear — visible, highlighted with a beam, or hidden.
3
Preview in real time
Configure a test item in the sidebar and watch the rule list respond instantly. The first matching rule is highlighted so you know exactly what your filter will do to that item.
4
Copy the import code
Hit "Copy import code". The editor encodes your entire filter into a Base64 string — the same format the game uses internally.
5
Paste into the game
In Diablo 4, open Settings → Gameplay → Item Filter → Import. Paste the code. Your filter is live immediately, no restart needed.

Full guide →

Reference

Item rarity in Diablo 4

Loot filter rules can target any rarity tier. Here is a quick overview of the six tiers you will encounter in Sanctuary, from most common to most powerful:

Common

Basic items. Typically hidden in endgame filters — only useful for gold or crafting materials early on.

Magic

Two random affixes. Useful for Elixirs and Jewels; otherwise filtered out once you reach World Tier III.

Rare

Up to five affixes. The primary crafting target — salvaged for Veiled Crystals and Forgotten Souls.

Legendary

A guaranteed Aspect on top of affixes. Most endgame gear comes from this tier; filtering by item power matters here.

Unique

Fixed stats and a build-defining effect. Only a handful exist; most players highlight every Unique unconditionally.

Mythic Unique

Extremely rare and season-specific. You will almost certainly want to show these regardless of any other rule.

FAQ

Frequently asked questions

Is D4 Filter Forge safe to use? Will I get banned?: Yes, it is safe. D4 Filter Forge only produces a Base64 text string — the same format Blizzard's own filter import system uses. It does not read from or write to game memory, does not inject any code, and does not run alongside the game. You are simply pasting text into a settings screen.
Does it work with all platforms — PC, Xbox, PlayStation?: The import code is part of the game's cross-platform account system. A filter created on PC can be imported on console and vice versa, as long as you are signed into the same Battle.net account.
Can I load an existing filter I already have in the game?: Yes. In Diablo 4 go to Settings → Gameplay → Item Filter → Export. The game gives you a Base64 string. Paste that string into the editor's import field at the top of the page and all your rules load immediately.
How many rules can a filter have?: Blizzard does not publish a hard cap, but the Base64 string has an in-game size limit. In practice filters with up to a few hundred rules encode fine. If you hit the limit the editor will warn you before copying.
What does the live preview actually show?: You configure a hypothetical item in the sidebar — slot, rarity, item power, any affixes. The editor evaluates every rule against that item in order and highlights the first one that matches, so you can verify your rule priority without launching the game.
Can I share my filter with friends?: Two ways: share the URL (your entire filter state is encoded in it), or copy the Base64 import code and post it on Discord, Reddit, or a Pastebin. Anyone can paste it into their own editor or directly into the game.
Is D4 Filter Forge free?: Yes, completely free. If you find it useful you can support the project via Ko-fi — the link is in the editor. There are no paywalled features.