What's Changed

Bug Fixes

• convertPathData, fix instances were q was incorrectly converted to t. By @KTibow in https://github.com/svg/svgo/pull/1889
• convertTransform, fix for some transforms that weren't being converted correctly. By @SethFalco in https://github.com/svg/svgo/pull/1916

SVG Optimization

• convertPathData, improves closing paths and how we determine if to use absolute or relative commands. By @KTibow in https://github.com/svg/svgo/pull/1867
• convertPathData, round arc or convert to lines based on the sagitta, can be disabled by setting smartArcRounding to false. By @KTibow in https://github.com/svg/svgo/pull/1873
• convertPathData, convert cubic Bézier curves to quadratic Bézier curves where possible, can be disabled by setting convertToQ to false. By @KTibow in https://github.com/svg/svgo/pull/1889

Performance

• mergePaths, refactor for performance with large files. By @mozzie in https://github.com/svg/svgo/pull/1764 and https://github.com/svg/svgo/pull/1904
• convertPathData, refactor #stringifyPathData for performance. By @SethFalco in https://github.com/svg/svgo/pull/1900
• Use Set instead of Array for faster lookups. By @SethFalco in https://github.com/svg/svgo/pull/1899

Metrics

Before and after using vectors from various sources, with the default preset of each respective version:

| SVG | Original | v3.1.0 | v3.2.0 | Delta | |---|---|---|---|---| | Arch Linux Logo | 9.529 KiB | 4.162 KiB | 4.115 KiB | ⬇️ 0.047 KiB | | Blobs | 50.45 KiB | 42.949 KiB | 42.623 KiB | ⬇️ 0.326 KiB | | Isometric Madness | 869.034 KiB | 550.153 KiB | 540.582 KiB | ⬇️ 9.571 KiB | | tldr-pages Banner | 2.071 KiB | 1.07 KiB | 1.07 KiB | | | Wikipedia Logo | 161.551 KiB | 116 KiB | 111.668 KiB | ⬇️ 4.332 KiB |

Before and after of the browser bundle of each respective version:

| | v3.1.0 | v3.2.0 | Delta | |---|---|---|---| | svgo.browser.js | 660.9 kB | 910.9 kB | ⬆️ 250 kB |