From a15873b2542b6cc1fcd60973bfdbaa500d766a9a Mon Sep 17 00:00:00 2001
From: slience1213 <2503404258gl@gmail.com>
Date: Wed, 22 Oct 2025 16:22:47 +0800
Subject: [PATCH 1/2] improve(pdf-loader): update error message to specify
 support for pdf-parse v1 only

---
 libs/langchain-community/src/document_loaders/fs/pdf.ts  | 2 +-
 libs/langchain-community/src/document_loaders/web/pdf.ts | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/libs/langchain-community/src/document_loaders/fs/pdf.ts b/libs/langchain-community/src/document_loaders/fs/pdf.ts
index 08576bcae856..0d5a47aa25fd 100644
--- a/libs/langchain-community/src/document_loaders/fs/pdf.ts
+++ b/libs/langchain-community/src/document_loaders/fs/pdf.ts
@@ -143,7 +143,7 @@ async function PDFLoaderImports() {
   } catch (e) {
     console.error(e);
     throw new Error(
-      "Failed to load pdf-parse. Please install it with eg. `npm install pdf-parse`."
+      "Failed to load pdf-parse. This loader currently supports pdf-parse v1 only. Please install v1, e.g. `npm install pdf-parse@^1` (v2 is not yet supported)."
     );
   }
 }
diff --git a/libs/langchain-community/src/document_loaders/web/pdf.ts b/libs/langchain-community/src/document_loaders/web/pdf.ts
index e832d8737a8d..594dae14c2a0 100644
--- a/libs/langchain-community/src/document_loaders/web/pdf.ts
+++ b/libs/langchain-community/src/document_loaders/web/pdf.ts
@@ -128,7 +128,7 @@ async function PDFLoaderImports() {
   } catch (e) {
     console.error(e);
     throw new Error(
-      "Failed to load pdf-parse. Please install it with eg. `npm install pdf-parse`."
+      "Failed to load pdf-parse. This loader currently supports pdf-parse v1 only. Please install v1, e.g. `npm install pdf-parse@^1` (v2 is not yet supported)."
     );
   }
 }

From 546568f81a47d98c94ced2451bcb580ee4b63d1b Mon Sep 17 00:00:00 2001
From: Christian Bromann <git@bromann.dev>
Date: Fri, 7 Nov 2025 13:19:38 -0800
Subject: [PATCH 2/2] Update error message for pdf-loader support

---
 .changeset/orange-cars-mix.md | 5 +++++
 1 file changed, 5 insertions(+)
 create mode 100644 .changeset/orange-cars-mix.md

diff --git a/.changeset/orange-cars-mix.md b/.changeset/orange-cars-mix.md
new file mode 100644
index 000000000000..456ba1b74a63
--- /dev/null
+++ b/.changeset/orange-cars-mix.md
@@ -0,0 +1,5 @@
+---
+"@langchain/community": patch
+---
+
+improve(pdf-loader): update error message to specify support for pdf-parse v1 only