a diff viewer from the terminal; for the web

Read any diff like a pull request.

Point diffweb at two files, two folders, or a list of pairs. It opens them in your browser — split or unified, syntax-highlighted, word-level marks, ten themes.

Install — macOS, Linux & Windows, no dependencies

$ curl -fsSL https://diffweb.pages.dev/install | bash

1function price(item, qty) {

2 const net = item.base;

3 const tax = net * 0.2;

4 return net + tax;

1function price(item, qty) {

2 const net = item.base;

3 const tax = net * rate;

4 return net + tax + fee;

Point it at anything

Not just two git commits — a generated file against a handwritten one, a vendored copy against upstream, or a list of pairs that only makes sense to you.

Two files

$ diffweb old.js new.js

Two folders, matched by path

$ diffweb ./v1 ./v2

A JSON manifest of pairs

$ diffweb pairs.json