diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index b890a377..21da688e 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -2,7 +2,7 @@ name: CI
 
 env:
   FORCE_COLOR: 2
-  NODE: 20
+  NODE: 22
 
 on:
   pull_request:
@@ -31,9 +31,9 @@ jobs:
       fail-fast: false
       matrix:
         node-version:
+          - 24
           - 22
           - 20
-          - 18
         os:
           - ubuntu-latest
           - windows-latest
diff --git a/README.md b/README.md
index 7e6c85c3..e7659afd 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # svgo-ll [![npm](https://img.shields.io/npm/v/svgo-ll)](https://npmjs.org/package/svgo-ll)
 
-**svgo-ll** is a Node.js library and command-line application for optimizing SVG files, evolved from the [SVGO](https://www.npmjs.com/package/svgo) package. **svgo-ll** is focused on lossless optimization and compression.
+**svgo-ll** is a Node.js library and command-line application for optimizing SVG files, evolved from the [SVGO](https://www.npmjs.com/package/svgo) package. **svgo-ll** is focused on lossless optimization and compression. See the [summary of differences between **svgo-ll** and SVGO](https://github.com/svg-utils/svgo-ll/blob/main/docs/diffs-from-svgo.md) for more details.
 
 ## Why?
 
diff --git a/docs/01-index.mdx b/docs/01-index.mdx
deleted file mode 100644
index cacacf83..00000000
--- a/docs/01-index.mdx
+++ /dev/null
@@ -1,38 +0,0 @@
----
-title: Introduction
-slug: 'introduction'
----
-
-SVGO (short for SVG Optimizer) is a Node.js library and command-line application for optimizing SVG files.
-
-SVG files, especially those exported from vector editors, usually contain a lot of redundant information. This includes editor metadata, comments, hidden elements, default or suboptimal values, and other stuff that can be safely removed or converted without affecting the rendering result.
-
-## Installation
-
-### System Requirements
-
-- [Node.js 16](https://nodejs.org/) or later
-
-<Tabs>
-  <TabItem value="npm" label="npm" default>
-
-```sh
-npm install -g svgo
-```
-
-  </TabItem>
-  <TabItem value="yarn" label="Yarn">
-
-```sh
-yarn global add svgo
-```
-
-  </TabItem>
-  <TabItem value="pnpm" label="pnpm">
-
-```sh
-pnpm add -g svgo
-```
-
-  </TabItem>
-</Tabs>
diff --git a/docs/04-plugins/index.mdx b/docs/04-plugins/index.mdx
deleted file mode 100644
index d8a2fc1b..00000000
--- a/docs/04-plugins/index.mdx
+++ /dev/null
@@ -1,17 +0,0 @@
----
-title: Plugins
----
-
-All optimizations performed by SVGO are through the various plugins that are either built-in, or provided in your SVGO config.
-
-Built-in plugins are focused around either optimizations or compatibility. However, the plugin architecture is very flexible, so plugins can be made to do effectively anything.
-
-## Presets
-
-Presets are generalized SVGO plugin pipelines, though there is only one built-in to SVGO called [preset-default](/docs/preset-default/).
-
-The preset-default pipeline can be used by either:
-
-- Not defining a `plugins` property in the config.
-- Omitting the config altogether.
-- Specifying the `preset-default` plugin.
diff --git a/docs/04-plugins/removeEmptyContainers.mdx b/docs/04-plugins/removeEmptyContainers.mdx
deleted file mode 100644
index 6edd6bd0..00000000
--- a/docs/04-plugins/removeEmptyContainers.mdx
+++ /dev/null
@@ -1,22 +0,0 @@
----
-title: removeEmptyContainers
-svgo:
-  pluginId: removeEmptyContainers
-  defaultPlugin: true
----
-
-Remove container elements in the document that have no children or meaningful attributes, excluding the `<svg>` element which is ignored.
-
-A container, as defined in the [SVG specifications](https://www.w3.org/TR/SVG11/intro.html#TermContainerElement), is an SVG element that can have graphical child elements. Container elements include:
-
-- [`<a>`](https://developer.mozilla.org/docs/Web/SVG/Element/a)
-- [`<defs>`](https://developer.mozilla.org/docs/Web/SVG/Element/defs)
-- [`<glyph>`](https://developer.mozilla.org/docs/Web/SVG/Element/glyph)
-- [`<g>`](https://developer.mozilla.org/docs/Web/SVG/Element/g)
-- [`<marker>`](https://developer.mozilla.org/docs/Web/SVG/Element/marker)
-- [`<mask>`](https://developer.mozilla.org/docs/Web/SVG/Element/mask)
-- [`<missing-glyph>`](https://developer.mozilla.org/docs/Web/SVG/Element/missing-glyph)
-- [`<pattern>`](https://developer.mozilla.org/docs/Web/SVG/Element/pattern)
-- [`<svg>`](https://developer.mozilla.org/docs/Web/SVG/Element/svg)
-- [`<switch>`](https://developer.mozilla.org/docs/Web/SVG/Element/switch)
-- [`<symbol>`](https://developer.mozilla.org/docs/Web/SVG/Element/symbol)
diff --git a/docs/command-line-options.md b/docs/command-line-options.md
index f1b7603c..52b0ab94 100644
--- a/docs/command-line-options.md
+++ b/docs/command-line-options.md
@@ -19,8 +19,11 @@ If `--folder` is specified, process files in all sub-folders recursively.
 `--exclude <PATTERN...>`  
 If `--folder` is specified, exclude files matching any of the specified regular expression patterns.
 
+<a id="plugins"></a>
+
 ## Plugin and Compression Options
 
+<a id="preset"></a>
 `--preset <default | next | none>`  
 Specify which set of predefined plugins to use. If this option is not used, and no plugins are define by the `--config` option,
 [preset-default](./preset-default.md) is used.
@@ -33,6 +36,7 @@ Specify one or more builtin plugins to run in addition to those specified by `--
 ` --options <FILENAME>`  
 Path to a [JSON file](https://www.json.org) containing configuration parameters for enabled plugins. The JSON file should contain an object whose keys are the names of plugins, and whose values are the parameters to pass to that plugin. This option cannot be used if the [`--config` option](#config) is specified.
 
+<a id="disable"></a>
 `--disable <plugin...>`  
 Specify one or more plugins specified by `--preset` or `--config` which should not be run.
 
@@ -40,6 +44,8 @@ Specify one or more plugins specified by `--preset` or `--config` which should n
 `--config <FILENAME>`  
 Specifies a [custom configuration file](./custom-config-file.md).
 
+<a id="max-passes"></a>
+
 `--max-passes <INTEGER>`  
 Maximum number of iterations over the plugins. Must be an integer between 1 and 10. Default is 10.
 
diff --git a/docs/diffs-from-svgo.md b/docs/diffs-from-svgo.md
new file mode 100644
index 00000000..f06f269d
--- /dev/null
+++ b/docs/diffs-from-svgo.md
@@ -0,0 +1,60 @@
+# Differences Between **svgo-ll** and SVGO version 4
+
+**svgo-ll** originated as a clone of an [SVGO](https://github.com/svg/svgo) version 4 release candidate. Since then, numerous changes have been made to prioritize lossless compression, fix bugs, and improve performance. Some of these changes are discussed below.
+
+## Rounding and Precision
+
+In SVGO, rounding of decimal values is enabled by default and integrated into many plugins in ways that are not possible to disable. In **svgo-ll**, default plugins do not do any rounding. Rounding is opt-in and handled by a [separate plugin](./plugins/round.md).
+
+## Plugins
+
+The following SVGO default plugins have been removed from **svgo-ll**:
+
+- **cleanupAttrs**
+- **cleanupEnableBackground**
+- **cleanupNumericValues**
+- **convertColors** - similar functionality is in the new **[minifyColors](./plugins/minifyColors.md)** plugin
+- **convertPathData** - most of the lossless functionality of this plugin has been preserved in the new **[minifyPathData](./plugins/minifyPathData.md)** plugin
+- **convertTransform** - some of the benefits of this plugin are achieved with the new **[minifyTransforms](./plugins/minifyTransforms.md)** plugin
+- **mergePaths** - some of the benefits of **mergePaths** are achieved with the new **[createGroups](./plugins/createGroups.md)** plugin
+- **mergeStyles**
+- **moveElemsAttrsToGroup**
+- **moveGroupAttrsToElems**
+- **removeDeprecatedAttrs**
+- **removeEmptyAttrs**
+- **removeEmptyText** - now handled by [removeEmptyContainers](./plugins/removeEmptyContainers.md)
+- **sortAttrs**
+- **sortDefsChildren**
+
+The following new default plugins have been added to **svgo-ll**:
+
+- **[cleanupStyleAttributes](./plugins/cleanupStyleAttributes.md)**
+- **[cleanupTextElements](./plugins/cleanupTextElements.md)**
+- **[cleanupXlink](./plugins/cleanupXlink.md)**
+- **combineStyleElements**
+- **[createGroups](./plugins/createGroups.md)**
+- **[mergeGradients](./plugins/mergeGradients.md)**
+- **[minifyColors](./plugins/minifyColors.md)**
+- **[minifyGradients](./plugins/minifyGradients.md)**
+- **[minifyPathData](./plugins/minifyPathData.md)**
+- **[minifyTransforms](./plugins/minifyTransforms.md)**
+- **moveElemsStylesToGroup**
+
+## CSS
+
+In SVGO, many plugins do not account for the impact of CSS. Many transformations are not safe when styles are used; when `<style>` elements are present, it can be difficult to determine whether a transformation is safe. All **svgo-ll** plugins check for the presence of `<style>` elements and the types of selectors they use; depending on whether `<style>` elements are present and the complexity of selectors, they may disable all or part of their functionality. For more details, see the [scalability](#scalability) section.
+
+## Configuration
+
+Plugins can be [enabled, disabled, and configured](./command-line-options.md#plugins) from the command line without writing code.
+
+The `--multipass` option has been deprecated and replaced by [`--max-passes`](./command-line-options.md#max-passes). By default **svgo-ll** will make up to 10 passes, the equivalent of using the `--multipass` option in SVGO.
+
+<a id="scalability"></a>
+
+## Scalability
+
+A number of architectural changes have been made to improve performance and scalability. These include:
+
+- Deprecating `detachNodeFromParent()` - see discussion in SVGO issues [1969](https://github.com/svg/svgo/issues/1969) and [2080](https://github.com/svg/svgo/issues/2080).
+- Recording data which is expensive to calculate outside of the optimization loop (particularly `<style>` data) and passing this data to each plugin. Plugins which modify the data (e.g. `inlineStyles`) are responsible for updating the data.
diff --git a/docs/plugins/cleanupStyleAttributes.md b/docs/plugins/cleanupStyleAttributes.md
index deb23a4f..256dc777 100644
--- a/docs/plugins/cleanupStyleAttributes.md
+++ b/docs/plugins/cleanupStyleAttributes.md
@@ -21,6 +21,8 @@ The list of allowable properties comes from https://www.w3.org/TR/SVG2/styling.h
 
 Empty `style` attributes are removed.
 
+Numeric values in style properties are written in the most compact form.
+
 Style attributes are not changed if the document has attribute selectors on the `style` attribute.
 
 ### `class` Attributes
diff --git a/docs/plugins/mergeGradients.md b/docs/plugins/mergeGradients.md
new file mode 100644
index 00000000..688c7910
--- /dev/null
+++ b/docs/plugins/mergeGradients.md
@@ -0,0 +1,16 @@
+# mergeGradients
+
+Removes duplicate `<linearGradient>` and `<radialGradient>` elements.
+
+## Details
+
+The plugin has no effect if:
+
+- The document has scripts.
+- The document has `<style>` elements with CSS which **svgo-ll** is not able to process.
+
+If identical gradients are found, all but one is removed, and all references to the removed gradients are replaced with a reference to the remaining gradient.
+
+Gradient elements are not considered identical unless all of their children are `<stop>` elements.
+
+Gradients whose `id` attributes are referenced by a CSS id selector are ignored.
diff --git a/docs/plugins/minifyTransforms.md b/docs/plugins/minifyTransforms.md
new file mode 100644
index 00000000..035d2d62
--- /dev/null
+++ b/docs/plugins/minifyTransforms.md
@@ -0,0 +1,17 @@
+# minifyTransforms
+
+Make transform expressions as short as possible.
+
+## Details
+
+For all `transform`, `gradientTransform`, `patternTransform` attributes, rewrite them in a shorter form if possible.
+
+The following transformations are performed:
+
+- All numbers in the transform expressions are written in the most compact form.
+- Default values are removed (e.g., `translate(2,0)` becomes `translate(2)`).
+- If equivalent expressions are possible, the shortest one is used (e.g., `matrix(1 0 0 1 10 20)` becomes `translate(10 20)`).
+- Adjacent `translate()` functions are merged (e.g., `translate(2 3)translate(4)` becomes `translate(6 3)`).
+- Adjacent `scale()` functions are merged (e.g., `scale(2.1)scale(2.2)` becomes `scale(4.62)`).
+- Adjacent `rotate()` functions are merged (e.g., `rotate(23)rotate(24)` becomes `rotate(47)`).
+- Attributes with meaningless transforms are removed (e.g., `transform="rotate(0)"`).
diff --git a/docs/plugins/removeEmptyContainers.md b/docs/plugins/removeEmptyContainers.md
new file mode 100644
index 00000000..5ba82599
--- /dev/null
+++ b/docs/plugins/removeEmptyContainers.md
@@ -0,0 +1,33 @@
+# removeEmptyContainers
+
+Removes empty elements which do not affect rendering.
+
+## Details
+
+The plugin has no effect if:
+
+- The document has scripts.
+- The document has `<style>` elements with CSS which **svgo-ll** is not able to process.
+
+The following elements are removed:
+
+- `<a>`,
+  `<defs>`,
+  `<foreignObject>`,
+  `<g>`,
+  `<marker>`,
+  `<mask>`,
+  `<missing-glyph>`,
+  `<pattern>`,
+  `<switch>`,
+  `<symbol>`,
+  `<text>`, and
+  `<tspan>` elements which have no children.
+- `<use>` elements which reference empty containers.
+
+The following empty elements are not removed:
+
+- `<pattern>` elements with attributes.
+- `<g>` elements with a filter.
+- `<mask>` elements with an `id` attribute.
+- Elements which are children of a `<switch>` element.
diff --git a/docs/preset-default.md b/docs/preset-default.md
index a035ab97..e6c26a9b 100644
--- a/docs/preset-default.md
+++ b/docs/preset-default.md
@@ -22,14 +22,14 @@ The following plugins are included in `preset-default`, in the order that they a
 - removeNonInheritableGroupAttrs
 - removeUselessStrokeAndFill
 - [removeHiddenElems](./plugins/removeHiddenElems.md)
-- removeEmptyText
-- minifyTransforms
+- [minifyTransforms](./plugins/minifyTransforms.md)
 - convertEllipseToCircle
 - moveElemsStylesToGroup
-- collapseGroups
 - convertShapeToPath
 - [minifyPathData](./plugins/minifyPathData.md)
-- removeEmptyContainers
+- [mergeGradients](./plugins/mergeGradients.md)
+- [removeEmptyContainers](./plugins/removeEmptyContainers.md)
 - removeUnusedNS
 - [createGroups](./plugins/createGroups.md)
+- collapseGroups
 - [cleanupTextElements](./plugins/cleanupTextElements.md)
diff --git a/docs/preset-next.md b/docs/preset-next.md
index 52b71977..ccb6ee18 100644
--- a/docs/preset-next.md
+++ b/docs/preset-next.md
@@ -23,14 +23,14 @@ The following plugins are included in `preset-next`, in the order that they are
 - removeNonInheritableGroupAttrs
 - removeUselessStrokeAndFill
 - [removeHiddenElems](./plugins/removeHiddenElems.md)
-- removeEmptyText
-- minifyTransforms
+- [minifyTransforms](./plugins/minifyTransforms.md)
 - convertEllipseToCircle
 - moveElemsStylesToGroup
-- collapseGroups
 - convertShapeToPath
 - [minifyPathData](./plugins/minifyPathData.md)
-- removeEmptyContainers
+- [mergeGradients](./plugins/mergeGradients.md)
+- [removeEmptyContainers](./plugins/removeEmptyContainers.md)
 - removeUnusedNS
 - [createGroups](./plugins/createGroups.md)
+- collapseGroups
 - [cleanupTextElements](./plugins/cleanupTextElements.md)
diff --git a/lib/svgo/tools.js b/lib/svgo/tools.js
index f9e43e2e..8054c31b 100644
--- a/lib/svgo/tools.js
+++ b/lib/svgo/tools.js
@@ -150,7 +150,7 @@ export function deleteChildren(childrenToDeleteByParent) {
 /**
  * @param {number} n
  * @param {number} m
- * @deprecated
+ * @deprecated use ExactNum instead
  */
 export function exactAdd(n, m) {
   const d1 = getNumberOfDecimalDigits(n);
@@ -161,7 +161,7 @@ export function exactAdd(n, m) {
 /**
  * @param {number} n
  * @param {number} m
- * @deprecated
+ * @deprecated use ExactNum instead
  */
 export function exactMul(n, m) {
   const d1 = getNumberOfDecimalDigits(n);
diff --git a/lib/version.js b/lib/version.js
index 8a3e8ff3..64aa1066 100644
--- a/lib/version.js
+++ b/lib/version.js
@@ -1,2 +1,2 @@
 /** Version of SVGO. */
-export const VERSION = '5.6.1-alpha.1';
+export const VERSION = '5.7.0';
diff --git a/package.json b/package.json
index 62efe9f0..eb6f85b7 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "packageManager": "yarn@3.8.2",
   "name": "svgo-ll",
-  "version": "5.6.1-alpha.1",
+  "version": "5.7.0",
   "description": "svgo-ll is a Node.js library and command-line application for optimizing SVG images.",
   "license": "MIT",
   "type": "module",
diff --git a/plugins/minifyTransforms.js b/plugins/minifyTransforms.js
index 0454b2e9..c79155f9 100644
--- a/plugins/minifyTransforms.js
+++ b/plugins/minifyTransforms.js
@@ -77,7 +77,6 @@ function normalize(transforms) {
    */
   function mergeAdjacentScaleRotate(transforms) {
     /**
-     *
      * @param {TransformItem} origRotate
      * @param {TransformItem} origScale
      */
diff --git a/test/fixtures/files/overlap.svg b/test/fixtures/files/overlap.svg
new file mode 100644
index 00000000..a68c7767
--- /dev/null
+++ b/test/fixtures/files/overlap.svg
@@ -0,0 +1,6 @@
+<svg viewBox="0 0 10 10"
+  xmlns="http://www.w3.org/2000/svg">
+  <!-- Rectangle coordinates do not overlap, but borders do. -->
+  <path d="M 1 1 h8 v2 h-8 z" style="stroke:black;fill:none;opacity:.5" />
+  <path d="M 1 3.5 h8 v2 h-8 z" style="stroke:black;fill:none;opacity:.5" />
+</svg>