Buffs and debuffs

Buffs and debuffs are changes to an individual's combat capabilities. They include activated prayers and changes in levels of combat skills. A positive change is called a buff, and a negative change a debuff. They are seen on the Buff Bar and Debuff Bar gameplay HUDs, respectively, which can be moved around, although they cannot be resized. These interfaces may only show a total of 18 buffs and 12 debuffs at once. In Legacy Mode, they can be viewed from the attack styles panel by right clicking on the weakness icon next to the weapon name.

They are categorized under game settings as: These categories can be toggled on/off independently. These do not toggle off icons that are already displayed, nor ones above NPCs. If toggling does not seem to affect an icon, try either checking other settings, or reequipping an item.
 * Boss specific
 * Boosts
 * Prayers
 * Overhead prayers
 * Offensive abilities
 * Defensive abilities
 * Item effects
 * Pet effects
 * Auras
 * Status effects
 * Skilling
 * Invention Perks

Others
These are other things that are not directly stat related at a glance, but are categorized as boosts.

Prayer
These are the prayers which do not give an overhead icon above the player

Overhead prayers
These are prayers which when activated, appear as icons on top of the player's head.

Attack
These are buffs/debuffs which appear when using abilities under the Attack tab.

Strength
These are buffs/debuffs which appear when using abilities under the Strength tab.

Ranged
These are buffs/debuffs which appear when using abilities under the Ranged tab.

Magic
These are buffs/debuffs which appear when using abilities under the Magic tab.

Defence
These are buffs/debuffs which appear when using abilities under the Defence tab.

Constitution
These are buffs/debuffs which appear when using abilities under the Constitution tab.