Sourced from tailwindcss's releases.

v4.2.4

Fixed

• Ensure imports in @import and @plugin still resolve correctly when using Vite aliases in @tailwindcss/vite (#19947)

v4.2.3

Fixed

• Canonicalization: improve canonicalizations for tracking-* utilities by preferring non-negative utilities (e.g. -tracking-tighter → tracking-wider) (#19827)
• Fix crash due to invalid characters in candidate (exceeding valid unicode code point range) (#19829)
• Ensure query params in imports are considered unique resources when using @tailwindcss/webpack (#19723)
• Canonicalization: collapse arbitrary values into shorthand utilities (e.g. px-[1.2rem] py-[1.2rem] → p-[1.2rem]) (#19837)
• Canonicalization: collapse border-{t,b}-* into border-y-*, border-{l,r}-* into border-x-*, and border-{t,r,b,l}-* into border-* (#19842)
• Canonicalization: collapse scroll-m{t,b}-* into scroll-my-*, scroll-m{l,r}-* into scroll-mx-*, and scroll-m{t,r,b,l}-* into scroll-m-* (#19842)
• Canonicalization: collapse scroll-p{t,b}-* into scroll-py-*, scroll-p{l,r}-* into scroll-px-*, and scroll-p{t,r,b,l}-* into scroll-p-* (#19842)
• Canonicalization: collapse overflow-{x,y}-* into overflow-* (#19842)
• Canonicalization: collapse overscroll-{x,y}-* into overscroll-* (#19842)
• Read from --placeholder-color instead of --background-color for placeholder-* utilities (#19843)
• Upgrade: ensure files are not emptied out when killing the upgrade process while it's running (#19846)
• Upgrade: use config.content when migrating from Tailwind CSS v3 to Tailwind CSS v4 (#19846)
• Upgrade: never migrate files that are ignored by git (#19846)
• Add .env and .env.* to default ignored content files (#19846)
• Canonicalization: migrate overflow-ellipsis into text-ellipsis (#19849)
• Canonicalization: migrate start-full → inset-s-full, start-auto → inset-s-auto, start-px → inset-s-px, and start-<number> → inset-s-<number> as well as negative versions (#19849)
• Canonicalization: migrate end-full → inset-e-full, end-auto → inset-e-auto, end-px → inset-e-px, and end-<number> → inset-e-<number> as well as negative versions (#19849)
• Canonicalization: move the - sign inside the arbitrary value -left-[9rem] → left-[-9rem] (#19858)
• Canonicalization: move the - sign outside the arbitrary value ml-[calc(-1*var(--width))] → -ml-(--width) (#19858)
• Improve performance when scanning JSONL / NDJSON files (#19862)
• Support NODE_PATH environment variable in standalone CLI (#19617)

v4.2.2

Added

• Support Vite 8 in @tailwindcss/vite (#19790)

Fixed

• Don't crash when candidates contain prototype properties like row-constructor (#19725)
• Canonicalize calc(var(--spacing)*…) expressions into --spacing(…) (#19769)
• Fix crash in canonicalization step when handling utilities containing @property at-rules (e.g. shadow-sm border) (#19727)
• Skip full reload for server only modules scanned by client CSS when using @tailwindcss/vite (#19745)
• Improve canonicalization for bare values exceeding default spacing scale suggestions (e.g. w-1234 h-1234 → size-1234) (#19809)
• Fix canonicalization resulting in empty list (e.g. w-5 h-5 size-5 → '' instead of size-5) (#19812)

v4.2.1

Fixed

• Allow trailing dash in functional utility names for backwards compatibility (#19696)
• Properly detect classes containing . characters within curly braces in MDX files (#19711)

... (truncated)

Sourced from tailwindcss's changelog.

[4.2.4] - 2026-04-21

Fixed

• Ensure imports in @import and @plugin still resolve correctly when using Vite aliases in @tailwindcss/vite (#19947)

[4.2.3] - 2026-04-20

Fixed

• Canonicalization: improve canonicalization for tracking-* utilities by preferring non-negative utilities (e.g. -tracking-tighter → tracking-wider) (#19827)
• Fix crash due to invalid characters in candidate (exceeding valid unicode code point range) (#19829)
• Ensure query params in imports are considered unique resources when using @tailwindcss/webpack (#19723)
• Canonicalization: collapse arbitrary values into shorthand utilities (e.g. px-[1.2rem] py-[1.2rem] → p-[1.2rem]) (#19837)
• Canonicalization: collapse border-{t,b}-* into border-y-*, border-{l,r}-* into border-x-*, and border-{t,r,b,l}-* into border-* (#19842)
• Canonicalization: collapse scroll-m{t,b}-* into scroll-my-*, scroll-m{l,r}-* into scroll-mx-*, and scroll-m{t,r,b,l}-* into scroll-m-* (#19842)
• Canonicalization: collapse scroll-p{t,b}-* into scroll-py-*, scroll-p{l,r}-* into scroll-px-*, and scroll-p{t,r,b,l}-* into scroll-p-* (#19842)
• Canonicalization: collapse overflow-{x,y}-* into overflow-* (#19842)
• Canonicalization: collapse overscroll-{x,y}-* into overscroll-* (#19842)
• Read from --placeholder-color instead of --background-color for placeholder-* utilities (#19843)
• Upgrade: ensure files are not emptied out when killing the upgrade process while it's running (#19846)
• Upgrade: use config.content when migrating from Tailwind CSS v3 to Tailwind CSS v4 (#19846)
• Upgrade: never migrate files that are ignored by git (#19846)
• Add .env and .env.* to default ignored content files (#19846)
• Canonicalization: migrate overflow-ellipsis into text-ellipsis (#19849)
• Canonicalization: migrate start-full → inset-s-full, start-auto → inset-s-auto, start-px → inset-s-px, and start-<number> → inset-s-<number> as well as negative versions (#19849)
• Canonicalization: migrate end-full → inset-e-full, end-auto → inset-e-auto, end-px → inset-e-px, and end-<number> → inset-e-<number> as well as negative versions (#19849)
• Canonicalization: move the - sign inside the arbitrary value -left-[9rem] → left-[-9rem] (#19858)
• Canonicalization: move the - sign outside the arbitrary value ml-[calc(-1*var(--width))] → -ml-(--width) (#19858)
• Improve performance when scanning JSONL / NDJSON files (#19862)
• Support NODE_PATH environment variable in standalone CLI (#19617)

[4.2.2] - 2026-03-18

Fixed

• Don't crash when candidates contain prototype properties like row-constructor (#19725)
• Canonicalize calc(var(--spacing)*…) expressions into --spacing(…) (#19769)
• Fix crash in canonicalization step when handling utilities containing @property at-rules (e.g. shadow-sm border) (#19727)
• Skip full reload for server only modules scanned by client CSS when using @tailwindcss/vite (#19745)
• Add support for Vite 8 in @tailwindcss/vite (#19790)
• Improve canonicalization for bare values exceeding default spacing scale suggestions (e.g. w-1234 h-1234 → size-1234) (#19809)
• Fix canonicalization resulting in empty list (e.g. w-5 h-5 size-5 → '' instead of size-5) (#19812)
• Resolve tsconfig paths to allow for @import '@/path/to/file'; when using @tailwindcss/vite (#19803)

[4.2.1] - 2026-02-23

Fixed

• Allow trailing dash in functional utility names for backwards compatibility (#19696)

... (truncated)

• 69ad7cc 4.2.4 (#19948)
• 2e3fa49 4.2.3 (#19944)
• df6209a Canonicalize negative arbitrary values (#19858)
• 52fd421 Small refactor of canonicalization tests (#19851)
• c385fd3 use test.each instead of manual loop
• 0d6e038 fix index in test name
• 88a2d22 Add more canonicalization rules for deprecated utilities (#19849)
• 2c1ef9e Use --placeholder-color instead of --background-color for placeholder-*...
• 28d5268 Collapse more utilities by expanding their declarations (#19842)
• b55d960 fix(canonicalize): collapse arbitrary values into shorthand utilities (#19837)
• Additional commits viewable in compare view

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