vsdiff2html.
Git-Patch HTML Generator vs Reactive Svelte 5 Component
at a glance.
diff2html turns unified diff text — git patches — into polished, GitHub-style side-by-side or line-by-line HTML. It is the right tool for visualizing patches, and the wrong shape for comparing two strings inside a Svelte app: it needs pre-generated diff text as input and renders via an HTML string or imperative DOM wrapper plus a global stylesheet, rather than a Svelte component.
side-by-side.
Every surface that matters, compared without spin.
| feature | @humanspeak/svelte-diff | diff2html |
|---|---|---|
| Input To compare two strings with diff2html you must generate patch text first (e.g. jsdiff createPatch) | Two plain strings | Unified diff / git patch text |
| Ready-to-use Svelte component diff2html generates or inserts HTML; it is not a Svelte component | Svelte 5 component | No — HTML generator |
| Inline character-level diff | yes | Within changed lines |
| Side-by-side file view | no | yes |
| Git patch awareness (files, hunks, headers) | no | yes |
| Custom rendering | Svelte snippets | Template + CSS overrides |
| Output | Real DOM via Svelte | HTML string or imperative DOM injection + stylesheet |
| Expected patterns (ignore dynamic regions) | Named regex capture groups | no |
| Semantic cleanup | cleanupSemantic prop | no |
| TypeScript support | yes | yes |
where each shines.
- +Ready-to-use Svelte 5 component — pass two strings, get a rendered diff
- +Svelte 5 runes-native — reactive to prop changes, no manual recompute
- +Semantic and efficiency cleanup built in (readable diffs, not character noise)
- +Expected patterns — mark dynamic regions (dates, names, versions) as "expected" with named regex capture groups instead of showing them as diffs
- +Full rendering control via Svelte snippets (remove / insert / equal / expected / lineBreak) or plain CSS classes
- +TypeScript-first with typed props, timing stats, and diff results
- +Configurable timeout guard for large text comparisons
- +Polished GitHub-style diff UI out of the box
- +Side-by-side and line-by-line view modes
- +Understands real git patches — files, hunks, renames
- +Framework-agnostic and maintained, with less frequent releases
where each falls short.
- −Smaller community (newer project)
- −Character-level diffing with cleanup — no word / line / sentence granularity modes
- −A Svelte component — not for diffing data in Node scripts or CLIs
- −No side-by-side or per-file patch view
- −Requires unified diff text as input — comparing two strings means generating a patch first
- −Renders via an HTML string or imperative DOM wrapper and a global stylesheet, not components
- −Customization is CSS overrides, not your own markup
- −Heavier payload than a single-purpose component
the honest call.
Choose diff2html to display git patches — PR-style file views with side-by-side layout. Choose @humanspeak/svelte-diff to compare two strings inline in a Svelte app, without generating patch text as an intermediate step.
read more.
Every head-to-head, with the same matrix + pros / cons + verdict format.
svelte diff → install in 30 seconds