diff --git a/exp/README.md b/exp/README.md
index 2001384..45b045c 100644
--- a/exp/README.md
+++ b/exp/README.md
@@ -19,3 +19,9 @@ go install github.com/blevesearch/bleve/v2/cmd/bleve@latest
 ```
 
 And then do stuff like `bleve query test.bleve "enhanced"` 👍
+
+You can also try `sudo apt-get install pdfgrep`, do stuff like `pdfgrep -R
+"capab" ../datasheets` and compare.
+
+Finally, [bleveanalysis.couchbase.com](https://bleveanalysis.couchbase.com) is
+a good tool for testing the analyzers.