diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -1,11 +1,16 @@
-# Difftastic
+# It's Difftastic!
 
-A language-aware word-level diff.
+Difftastic is an experimental structured diff tool that compares files
+based on their syntax.
 
-```
-$ cargo run before.js after.js
-$ cargo run --inline before.js after.js
-```
+![screenshot](img/difftastic.png)
+
+It is very much unfinished. It works reasonably on very parenthesised
+data (lisps, JSON), it works sometimes on other languages with
+sufficient parentheses (Rust, JS), and falls back to a line-oriented
+diff otherwise.
+
+See `config/syntax.toml` to see how languages are defined.
 
 ## Other Diff Techniques
 
diff --git a/img/difftastic.png b/img/difftastic.png
new file mode 100644
index 000000000..4cbd884ce
Binary files /dev/null and b/img/difftastic.png differ