diff --git a/.golangci.toml b/.golangci.toml
new file mode 100644
index 0000000..61b2b79
--- /dev/null
+++ b/.golangci.toml
@@ -0,0 +1,16 @@
+[run]
+timeout = "120s"
+
+[output]
+format = "colored-line-number"
+
+[linters]
+enable = [
+    "gocyclo", "unconvert", "goimports", "unused", "unused",
+    "vetshadow", "nakedret", "errcheck", "revive", "ineffassign",
+    "goconst", "vet", "unparam", "gofmt"
+]
+
+[issues]
+exclude-use-default = false
+
diff --git a/cmd/gobl.html/main.go b/cmd/gobl.html/main.go
index 2287ec8..bcc1b2b 100644
--- a/cmd/gobl.html/main.go
+++ b/cmd/gobl.html/main.go
@@ -1,3 +1,4 @@
+// Package main provides the entry point for the gobl.html command-line tool.
 package main
 
 import (
diff --git a/cmd/gobl.html/serve.go b/cmd/gobl.html/serve.go
index 9262c03..c18eda6 100644
--- a/cmd/gobl.html/serve.go
+++ b/cmd/gobl.html/serve.go
@@ -48,7 +48,7 @@ func (s *serveOpts) cmd() *cobra.Command {
 	return cmd
 }
 
-func (s *serveOpts) runE(cmd *cobra.Command, args []string) error {
+func (s *serveOpts) runE(cmd *cobra.Command, _ []string) error {
 	ctx, cancel := context.WithCancel(cmd.Context())
 	defer cancel()
 
diff --git a/components/bill/invoice/invoice.go b/components/bill/invoice/invoice.go
new file mode 100644
index 0000000..815eea6
--- /dev/null
+++ b/components/bill/invoice/invoice.go
@@ -0,0 +1,2 @@
+// Package invoice provides a template for rendering a complete GOBL bill.Invoice object.
+package invoice
diff --git a/components/org/org.go b/components/org/org.go
new file mode 100644
index 0000000..bb1dc5c
--- /dev/null
+++ b/components/org/org.go
@@ -0,0 +1,3 @@
+// Package org helps render organization information from the
+// GOBL `org` package.
+package org
diff --git a/goblhtml.go b/goblhtml.go
index e9976bb..b9b87dc 100644
--- a/goblhtml.go
+++ b/goblhtml.go
@@ -1,3 +1,4 @@
+// Package goblhtml provides a simple way to render HTML documents from GOBL envelopes.
 package goblhtml
 
 import (
diff --git a/internal/options.go b/internal/options.go
index 1b54ecc..6fbc382 100644
--- a/internal/options.go
+++ b/internal/options.go
@@ -1,3 +1,4 @@
+// Package internal is used for internal option configuration.
 package internal
 
 import (
diff --git a/pkg/pdf/gotenberg.go b/pkg/pdf/gotenberg.go
index 4537b1c..8a452d6 100644
--- a/pkg/pdf/gotenberg.go
+++ b/pkg/pdf/gotenberg.go
@@ -34,7 +34,7 @@ func newGotenbergConvertor(opts ...Config) (*gotenbergConvertor, error) {
 	return gc, nil
 }
 
-func (gc *gotenbergConvertor) HTML(ctx context.Context, data []byte, opts ...Option) ([]byte, error) {
+func (gc *gotenbergConvertor) HTML(_ context.Context, data []byte, _ ...Option) ([]byte, error) {
 	buf := bytes.NewBuffer(data)
 	resp, err := gc.client.R().
 		SetFileReader("files", "index.html", buf).
diff --git a/pkg/pdf/prince.go b/pkg/pdf/prince.go
index 9985bf3..27adba9 100644
--- a/pkg/pdf/prince.go
+++ b/pkg/pdf/prince.go
@@ -22,7 +22,7 @@ func newPrinceConvertor() (*princeConvertor, error) {
 	return c, nil
 }
 
-func (pc *princeConvertor) HTML(ctx context.Context, data []byte, opts ...Option) ([]byte, error) {
+func (pc *princeConvertor) HTML(_ context.Context, data []byte, opts ...Option) ([]byte, error) {
 	o := prepareOptions(opts)
 	j := new(princepdf.Job)
 	j.Input = &princepdf.Input{
diff --git a/pkg/pdf/weasyprint.go b/pkg/pdf/weasyprint.go
index 169831a..69021a4 100644
--- a/pkg/pdf/weasyprint.go
+++ b/pkg/pdf/weasyprint.go
@@ -33,7 +33,7 @@ func newWeasyprintConvertor(opts ...Config) (*weasyprintConvertor, error) {
 	return gc, nil
 }
 
-func (gc *weasyprintConvertor) HTML(ctx context.Context, data []byte, opts ...Option) ([]byte, error) {
+func (gc *weasyprintConvertor) HTML(_ context.Context, data []byte, _ ...Option) ([]byte, error) {
 	buf := bytes.NewBuffer(data)
 	resp, err := gc.client.R().
 		SetFileReader("html", "index.html", buf).