diff --git a/src/browser/renderer/shared/CellColorResolver.ts b/addons/addon-webgl/src/CellColorResolver.ts
similarity index 100%
rename from src/browser/renderer/shared/CellColorResolver.ts
rename to addons/addon-webgl/src/CellColorResolver.ts
diff --git a/src/browser/renderer/shared/CharAtlasCache.ts b/addons/addon-webgl/src/CharAtlasCache.ts
similarity index 95%
rename from src/browser/renderer/shared/CharAtlasCache.ts
rename to addons/addon-webgl/src/CharAtlasCache.ts
index 33e58078..051f5bfe 100644
--- a/src/browser/renderer/shared/CharAtlasCache.ts
+++ b/addons/addon-webgl/src/CharAtlasCache.ts
@@ -3,11 +3,11 @@
  * @license MIT
  */
 
-import { TextureAtlas } from 'browser/renderer/shared/TextureAtlas';
+import { TextureAtlas } from './TextureAtlas';
 import { ITerminalOptions, Terminal } from '@xterm/xterm';
 import { ITerminal, ReadonlyColorSet } from 'browser/Types';
 import { ICharAtlasConfig, ITextureAtlas } from 'browser/renderer/shared/Types';
-import { generateConfig, configEquals } from 'browser/renderer/shared/CharAtlasUtils';
+import { generateConfig, configEquals } from 'CharAtlasUtils';
 
 interface ITextureAtlasCacheEntry {
   atlas: ITextureAtlas;
diff --git a/src/browser/renderer/shared/CharAtlasUtils.ts b/addons/addon-webgl/src/CharAtlasUtils.ts
similarity index 97%
rename from src/browser/renderer/shared/CharAtlasUtils.ts
rename to addons/addon-webgl/src/CharAtlasUtils.ts
index db601383..31c09fe4 100644
--- a/src/browser/renderer/shared/CharAtlasUtils.ts
+++ b/addons/addon-webgl/src/CharAtlasUtils.ts
@@ -3,7 +3,7 @@
  * @license MIT
  */
 
-import { ICharAtlasConfig } from './Types';
+import { ICharAtlasConfig } from '../../../src/browser/renderer/shared/Types';
 import { Attributes } from 'common/buffer/Constants';
 import { ITerminalOptions } from '@xterm/xterm';
 import { IColorSet, ReadonlyColorSet } from 'browser/Types';
diff --git a/addons/addon-webgl/src/Constants.ts b/addons/addon-webgl/src/Constants.ts
new file mode 100644
index 00000000..a00434d6
--- /dev/null
+++ b/addons/addon-webgl/src/Constants.ts
@@ -0,0 +1,12 @@
+/**
+ * Copyright (c) 2017 The xterm.js authors. All rights reserved.
+ * @license MIT
+ */
+
+import { isFirefox, isLegacyEdge } from 'common/Platform';
+
+export const DIM_OPACITY = 0.5;
+// The text baseline is set conditionally by browser. Using 'ideographic' for Firefox or Legacy Edge
+// would result in truncated text (Issue 3353). Using 'bottom' for Chrome would result in slightly
+// unaligned Powerline fonts (PR 3356#issuecomment-850928179).
+export const TEXT_BASELINE: CanvasTextBaseline = isFirefox || isLegacyEdge ? 'bottom' : 'ideographic';
diff --git a/src/browser/renderer/shared/CursorBlinkStateManager.ts b/addons/addon-webgl/src/CursorBlinkStateManager.ts
similarity index 100%
rename from src/browser/renderer/shared/CursorBlinkStateManager.ts
rename to addons/addon-webgl/src/CursorBlinkStateManager.ts
diff --git a/src/browser/renderer/shared/CustomGlyphs.ts b/addons/addon-webgl/src/CustomGlyphs.ts
similarity index 100%
rename from src/browser/renderer/shared/CustomGlyphs.ts
rename to addons/addon-webgl/src/CustomGlyphs.ts
diff --git a/src/browser/renderer/shared/DevicePixelObserver.ts b/addons/addon-webgl/src/DevicePixelObserver.ts
similarity index 100%
rename from src/browser/renderer/shared/DevicePixelObserver.ts
rename to addons/addon-webgl/src/DevicePixelObserver.ts
diff --git a/addons/addon-webgl/src/GlyphRenderer.ts b/addons/addon-webgl/src/GlyphRenderer.ts
index f76804fd..a2c901d6 100644
--- a/addons/addon-webgl/src/GlyphRenderer.ts
+++ b/addons/addon-webgl/src/GlyphRenderer.ts
@@ -2,9 +2,7 @@
  * Copyright (c) 2018 The xterm.js authors. All rights reserved.
  * @license MIT
  */
-
-import { allowRescaling, throwIfFalsy } from 'browser/renderer/shared/RendererUtils';
-import { TextureAtlas } from 'browser/renderer/shared/TextureAtlas';
+import { TextureAtlas } from 'TextureAtlas';
 import { IRasterizedGlyph, IRenderDimensions, ITextureAtlas } from 'browser/renderer/shared/Types';
 import { NULL_CELL_CODE } from 'common/buffer/Constants';
 import { Disposable, toDisposable } from 'vs/base/common/lifecycle';
@@ -12,6 +10,7 @@ import { Terminal } from '@xterm/xterm';
 import { IRenderModel, IWebGL2RenderingContext, IWebGLVertexArrayObject } from './Types';
 import { createProgram, GLTexture, PROJECTION_MATRIX } from './WebglUtils';
 import type { IOptionsService } from 'common/services/Services';
+import { allowRescaling, throwIfFalsy } from 'browser/renderer/shared/RendererUtils';
 
 interface IVertices {
   attributes: Float32Array;
diff --git a/addons/addon-webgl/src/RectangleRenderer.ts b/addons/addon-webgl/src/RectangleRenderer.ts
index 6dbedf09..8ace9076 100644
--- a/addons/addon-webgl/src/RectangleRenderer.ts
+++ b/addons/addon-webgl/src/RectangleRenderer.ts
@@ -3,7 +3,6 @@
  * @license MIT
  */
 
-import { throwIfFalsy } from 'browser/renderer/shared/RendererUtils';
 import { IRenderDimensions } from 'browser/renderer/shared/Types';
 import { IThemeService } from 'browser/services/Services';
 import { ReadonlyColorSet } from 'browser/Types';
@@ -14,6 +13,7 @@ import { Terminal } from '@xterm/xterm';
 import { RENDER_MODEL_BG_OFFSET, RENDER_MODEL_FG_OFFSET, RENDER_MODEL_INDICIES_PER_CELL } from './RenderModel';
 import { IRenderModel, IWebGL2RenderingContext, IWebGLVertexArrayObject } from './Types';
 import { createProgram, expandFloat32Array, PROJECTION_MATRIX } from './WebglUtils';
+import { throwIfFalsy } from 'browser/renderer/shared/RendererUtils';
 
 const enum VertexAttribLocations {
   POSITION = 0,
diff --git a/src/browser/renderer/shared/TextureAtlas.ts b/addons/addon-webgl/src/TextureAtlas.ts
similarity index 99%
rename from src/browser/renderer/shared/TextureAtlas.ts
rename to addons/addon-webgl/src/TextureAtlas.ts
index 7343d890..c0842d54 100644
--- a/src/browser/renderer/shared/TextureAtlas.ts
+++ b/addons/addon-webgl/src/TextureAtlas.ts
@@ -4,8 +4,8 @@
  */
 
 import { IColorContrastCache } from 'browser/Types';
-import { DIM_OPACITY, TEXT_BASELINE } from 'browser/renderer/shared/Constants';
-import { tryDrawCustomChar } from 'browser/renderer/shared/CustomGlyphs';
+import { DIM_OPACITY, TEXT_BASELINE } from './Constants';
+import { tryDrawCustomChar } from 'CustomGlyphs';
 import { computeNextVariantOffset, treatGlyphAsBackgroundColor, isPowerlineGlyph, isRestrictedPowerlineGlyph, throwIfFalsy } from 'browser/renderer/shared/RendererUtils';
 import { IBoundingBox, ICharAtlasConfig, IRasterizedGlyph, ITextureAtlas } from 'browser/renderer/shared/Types';
 import { NULL_COLOR, channels, color, rgba } from 'common/Color';
diff --git a/addons/addon-webgl/src/WebglRenderer.ts b/addons/addon-webgl/src/WebglRenderer.ts
index 4be864c1..ce9b58c5 100644
--- a/addons/addon-webgl/src/WebglRenderer.ts
+++ b/addons/addon-webgl/src/WebglRenderer.ts
@@ -4,11 +4,10 @@
  */
 
 import { ITerminal } from 'browser/Types';
-import { CellColorResolver } from 'browser/renderer/shared/CellColorResolver';
-import { acquireTextureAtlas, removeTerminalFromCache } from 'browser/renderer/shared/CharAtlasCache';
-import { CursorBlinkStateManager } from 'browser/renderer/shared/CursorBlinkStateManager';
-import { observeDevicePixelDimensions } from 'browser/renderer/shared/DevicePixelObserver';
-import { createRenderDimensions } from 'browser/renderer/shared/RendererUtils';
+import { CellColorResolver } from 'CellColorResolver';
+import { acquireTextureAtlas, removeTerminalFromCache } from 'CharAtlasCache';
+import { CursorBlinkStateManager } from './CursorBlinkStateManager';
+import { observeDevicePixelDimensions } from 'DevicePixelObserver';
 import { IRenderDimensions, IRenderer, IRequestRedrawEvent, ITextureAtlas } from 'browser/renderer/shared/Types';
 import { ICharSizeService, ICharacterJoinerService, ICoreBrowserService, IThemeService } from 'browser/services/Services';
 import { CharData, IBufferLine, ICellData } from 'common/Types';
@@ -26,6 +25,7 @@ import { IRenderLayer } from './renderLayer/Types';
 import { Emitter, Event } from 'vs/base/common/event';
 import { addDisposableListener } from 'vs/base/browser/dom';
 import { combinedDisposable, Disposable, MutableDisposable, toDisposable } from 'vs/base/common/lifecycle';
+import { createRenderDimensions } from 'browser/renderer/shared/RendererUtils';
 
 export class WebglRenderer extends Disposable implements IRenderer {
   private _renderLayers: IRenderLayer[];
diff --git a/addons/addon-webgl/src/renderLayer/BaseRenderLayer.ts b/addons/addon-webgl/src/renderLayer/BaseRenderLayer.ts
index 0cac7eb3..ae7e47ef 100644
--- a/addons/addon-webgl/src/renderLayer/BaseRenderLayer.ts
+++ b/addons/addon-webgl/src/renderLayer/BaseRenderLayer.ts
@@ -4,9 +4,7 @@
  */
 
 import { ReadonlyColorSet } from 'browser/Types';
-import { acquireTextureAtlas } from 'browser/renderer/shared/CharAtlasCache';
-import { TEXT_BASELINE } from 'browser/renderer/shared/Constants';
-import { throwIfFalsy } from 'browser/renderer/shared/RendererUtils';
+import { acquireTextureAtlas } from 'CharAtlasCache';
 import { IRenderDimensions, ITextureAtlas } from 'browser/renderer/shared/Types';
 import { ICoreBrowserService, IThemeService } from 'browser/services/Services';
 import { Disposable, toDisposable } from 'vs/base/common/lifecycle';
@@ -14,6 +12,8 @@ import { CellData } from 'common/buffer/CellData';
 import { IOptionsService } from 'common/services/Services';
 import { Terminal } from '@xterm/xterm';
 import { IRenderLayer } from './Types';
+import { throwIfFalsy } from 'browser/renderer/shared/RendererUtils';
+import { TEXT_BASELINE } from 'Constants';
 
 export abstract class BaseRenderLayer extends Disposable implements IRenderLayer {
   private _canvas: HTMLCanvasElement;
diff --git a/addons/addon-webgl/src/renderLayer/LinkRenderLayer.ts b/addons/addon-webgl/src/renderLayer/LinkRenderLayer.ts
index 1357dec6..50bf2d8f 100644
--- a/addons/addon-webgl/src/renderLayer/LinkRenderLayer.ts
+++ b/addons/addon-webgl/src/renderLayer/LinkRenderLayer.ts
@@ -3,7 +3,7 @@
  * @license MIT
  */
 
-import { is256Color } from 'browser/renderer/shared/CharAtlasUtils';
+import { is256Color } from 'CharAtlasUtils';
 import { INVERTED_DEFAULT_COLOR } from 'browser/renderer/shared/Constants';
 import { IRenderDimensions } from 'browser/renderer/shared/Types';
 import { ICoreBrowserService, IThemeService } from 'browser/services/Services';
diff --git a/src/browser/renderer/shared/Constants.ts b/src/browser/renderer/shared/Constants.ts
index b5105ec7..4bc4f985 100644
--- a/src/browser/renderer/shared/Constants.ts
+++ b/src/browser/renderer/shared/Constants.ts
@@ -3,12 +3,4 @@
  * @license MIT
  */
 
-import { isFirefox, isLegacyEdge } from 'common/Platform';
-
 export const INVERTED_DEFAULT_COLOR = 257;
-
-export const DIM_OPACITY = 0.5;
-// The text baseline is set conditionally by browser. Using 'ideographic' for Firefox or Legacy Edge
-// would result in truncated text (Issue 3353). Using 'bottom' for Chrome would result in slightly
-// unaligned Powerline fonts (PR 3356#issuecomment-850928179).
-export const TEXT_BASELINE: CanvasTextBaseline = isFirefox || isLegacyEdge ? 'bottom' : 'ideographic';