Shared Library

The Shared Library is a section within Google Ads that houses reusable account-level resources including negative keyword lists, shared budgets, placement exclusion lists, and audience lists. These resources can be applied across multiple campaigns simultaneously, reducing redundancy and ensuring consistency.

Key Takeaways

• Central repository for resources shared across multiple campaigns
• Includes negative keyword lists, shared budgets, placement exclusions, and audiences
• Changes to a shared resource automatically propagate to all campaigns using it
• Reduces management overhead for large accounts with many campaigns
• Accessible under Tools > Shared library in the 2026 Google Ads interface

What Is the Shared Library

The Shared Library provides account-level resources that can be attached to multiple campaigns. Instead of adding the same negative keywords to 20 campaigns individually, you create one negative keyword list in the Shared Library and apply it everywhere.

Resource	Purpose	Typical Use
Negative keyword lists	Block unwanted search terms	Account-wide exclusions (e.g., “free,” “jobs,” competitor names)
Shared budgets	Pool budget across campaigns	Campaigns with variable daily demand
Placement exclusion lists	Block Display/YouTube placements	Brand safety exclusions, low-quality sites
Audience lists	Remarketing and targeting audiences	Shared across campaign types

How It Works

Each Shared Library resource follows the same pattern:

1. Create the resource in the Shared Library section
2. Populate it with the relevant items (keywords, placements, budget amount)
3. Apply it to one or more campaigns
4. Maintain it centrally — any update automatically applies to all linked campaigns

For negative keyword lists:

• Create up to 20 negative keyword lists per account
• Each list can contain up to 5,000 keywords
• Apply a list to any number of campaigns
• Adding a term to the list instantly blocks it across all linked campaigns

For placement exclusion lists:

• Block specific websites, YouTube channels, or apps from showing your Display and Video ads
• Maintain master exclusion lists for brand safety
• Apply across all Display and Performance Max campaigns

Practical Example

A legal services firm manages 15 Search campaigns across different practice areas. Common irrelevant search terms appear across all campaigns.

Without Shared Library:

• Add “free legal advice” as a negative to all 15 campaigns individually (15 actions)
• Discover a new irrelevant term “legal jobs” — add to all 15 campaigns again (15 more actions)
• Annual maintenance: 200+ individual negative keyword additions

With Shared Library:

• Create one “Universal Negatives” list with all common exclusions
• Apply to all 15 campaigns (one-time setup)
• Discover “legal jobs” — add to the shared list once, blocks across all 15 campaigns instantly
• Annual maintenance: 15-20 additions to one list

The firm creates three lists:

List Name	Keywords	Applied To
Universal Negatives	”free,” “jobs,” “salary,” “reddit” (150 terms)	All 15 campaigns
Competitor Names	25 competitor firm names	10 non-brand campaigns
DIY Legal	”template,” “form,” “do it yourself” (40 terms)	12 service campaigns

Why It Matters

The Shared Library transforms account management from repetitive per-campaign tasks into centralized, scalable operations. For accounts with more than a handful of campaigns, it is the difference between maintaining consistency and letting negative keyword gaps slowly drain budget. The placement exclusion functionality is equally critical for brand safety in Display campaigns, ensuring that exclusion standards are applied uniformly rather than campaign by campaign. As accounts grow in complexity, Shared Library resources become the backbone of efficient, error-free management.