diff --git a/pkg/fsutils/fsutils.go b/pkg/fsutils/fsutils.go
index 715a3a4a..80bb9c5b 100644
--- a/pkg/fsutils/fsutils.go
+++ b/pkg/fsutils/fsutils.go
@@ -12,10 +12,12 @@ func IsDir(filename string) bool {
 	return err == nil && fi.IsDir()
 }
 
-var cachedWd string
-var cachedWdError error
-var getWdOnce sync.Once
-var useCache = true
+var (
+	cachedWd      string
+	cachedWdError error
+	getWdOnce     sync.Once
+	useCache      = true
+)
 
 func UseWdCache(use bool) {
 	useCache = use
diff --git a/pkg/golinters/goanalysis/runner.go b/pkg/golinters/goanalysis/runner.go
index a8660b61..8243c345 100644
--- a/pkg/golinters/goanalysis/runner.go
+++ b/pkg/golinters/goanalysis/runner.go
@@ -61,7 +61,8 @@ type runner struct {
 }
 
 func newRunner(prefix string, logger logutils.Log, pkgCache *pkgcache.Cache, loadGuard *load.Guard,
-	loadMode LoadMode, sw *timeutils.Stopwatch) *runner {
+	loadMode LoadMode, sw *timeutils.Stopwatch,
+) *runner {
 	return &runner{
 		prefix:    prefix,
 		log:       logger,
@@ -80,7 +81,8 @@ func newRunner(prefix string, logger logutils.Log, pkgCache *pkgcache.Cache, loa
 // singlechecker and the multi-analysis commands.
 // It returns the appropriate exit code.
 func (r *runner) run(analyzers []*analysis.Analyzer, initialPackages []*packages.Package) ([]Diagnostic,
-	[]error, map[*analysis.Pass]*packages.Package) {
+	[]error, map[*analysis.Pass]*packages.Package,
+) {
 	debugf("Analyzing %d packages on load mode %s", len(initialPackages), r.loadMode)
 	defer r.pkgCache.Trim()
 
@@ -116,7 +118,8 @@ func (r *runner) markAllActions(a *analysis.Analyzer, pkg *packages.Package, mar
 }
 
 func (r *runner) makeAction(a *analysis.Analyzer, pkg *packages.Package,
-	initialPkgs map[*packages.Package]bool, actions map[actKey]*action, actAlloc *actionAllocator) *action {
+	initialPkgs map[*packages.Package]bool, actions map[actKey]*action, actAlloc *actionAllocator,
+) *action {
 	k := actKey{a, pkg}
 	act, ok := actions[k]
 	if ok {
@@ -150,7 +153,8 @@ func (r *runner) makeAction(a *analysis.Analyzer, pkg *packages.Package,
 }
 
 func (r *runner) buildActionFactDeps(act *action, a *analysis.Analyzer, pkg *packages.Package,
-	initialPkgs map[*packages.Package]bool, actions map[actKey]*action, actAlloc *actionAllocator) {
+	initialPkgs map[*packages.Package]bool, actions map[actKey]*action, actAlloc *actionAllocator,
+) {
 	// An analysis that consumes/produces facts
 	// must run on the package's dependencies too.
 	if len(a.FactTypes) == 0 {
@@ -175,7 +179,8 @@ func (r *runner) buildActionFactDeps(act *action, a *analysis.Analyzer, pkg *pac
 
 //nolint:gocritic
 func (r *runner) prepareAnalysis(pkgs []*packages.Package,
-	analyzers []*analysis.Analyzer) (map[*packages.Package]bool, []*action, []*action) {
+	analyzers []*analysis.Analyzer,
+) (map[*packages.Package]bool, []*action, []*action) {
 	// Construct the action graph.
 
 	// Each graph node (action) is one unit of analysis.
diff --git a/pkg/golinters/goanalysis/runners.go b/pkg/golinters/goanalysis/runners.go
index d5a9c157..c5a0b612 100644
--- a/pkg/golinters/goanalysis/runners.go
+++ b/pkg/golinters/goanalysis/runners.go
@@ -124,7 +124,8 @@ func getIssuesCacheKey(analyzers []*analysis.Analyzer) string {
 }
 
 func saveIssuesToCache(allPkgs []*packages.Package, pkgsFromCache map[*packages.Package]bool,
-	issues []result.Issue, lintCtx *linter.Context, analyzers []*analysis.Analyzer) {
+	issues []result.Issue, lintCtx *linter.Context, analyzers []*analysis.Analyzer,
+) {
 	startedAt := time.Now()
 	perPkgIssues := map[*packages.Package][]result.Issue{}
 	for ind := range issues {
@@ -185,7 +186,8 @@ func saveIssuesToCache(allPkgs []*packages.Package, pkgsFromCache map[*packages.
 
 //nolint:gocritic
 func loadIssuesFromCache(pkgs []*packages.Package, lintCtx *linter.Context,
-	analyzers []*analysis.Analyzer) ([]result.Issue, map[*packages.Package]bool) {
+	analyzers []*analysis.Analyzer,
+) ([]result.Issue, map[*packages.Package]bool) {
 	startedAt := time.Now()
 
 	lintResKey := getIssuesCacheKey(analyzers)
diff --git a/pkg/golinters/nolintlint/nolintlint.go b/pkg/golinters/nolintlint/nolintlint.go
index bdfceb18..aadc7eb6 100644
--- a/pkg/golinters/nolintlint/nolintlint.go
+++ b/pkg/golinters/nolintlint/nolintlint.go
@@ -151,8 +151,10 @@ func NewLinter(needs Needs, excludes []string) (*Linter, error) {
 	}, nil
 }
 
-var leadingSpacePattern = regexp.MustCompile(`^//(\s*)`)
-var trailingBlankExplanation = regexp.MustCompile(`\s*(//\s*)?$`)
+var (
+	leadingSpacePattern      = regexp.MustCompile(`^//(\s*)`)
+	trailingBlankExplanation = regexp.MustCompile(`\s*(//\s*)?$`)
+)
 
 //nolint:funlen,gocyclo
 func (l Linter) Run(fset *token.FileSet, nodes ...ast.Node) ([]Issue, error) {
diff --git a/pkg/golinters/testpackage.go b/pkg/golinters/testpackage.go
index db1ead96..b8a867eb 100644
--- a/pkg/golinters/testpackage.go
+++ b/pkg/golinters/testpackage.go
@@ -11,7 +11,7 @@ import (
 )
 
 func NewTestpackage(cfg *config.TestpackageSettings) *goanalysis.Linter {
-	var a = testpackage.NewAnalyzer()
+	a := testpackage.NewAnalyzer()
 
 	var settings map[string]map[string]any
 	if cfg != nil {
diff --git a/pkg/lint/load.go b/pkg/lint/load.go
index 7f892e94..ffc0ac5d 100644
--- a/pkg/lint/load.go
+++ b/pkg/lint/load.go
@@ -36,7 +36,8 @@ type ContextLoader struct {
 }
 
 func NewContextLoader(cfg *config.Config, log logutils.Log, goenv *goutil.Env,
-	lineCache *fsutils.LineCache, fileCache *fsutils.FileCache, pkgCache *pkgcache.Cache, loadGuard *load.Guard) *ContextLoader {
+	lineCache *fsutils.LineCache, fileCache *fsutils.FileCache, pkgCache *pkgcache.Cache, loadGuard *load.Guard,
+) *ContextLoader {
 	return &ContextLoader{
 		cfg:         cfg,
 		log:         log,
diff --git a/pkg/lint/runner.go b/pkg/lint/runner.go
index 13daa3b3..aa26ea08 100644
--- a/pkg/lint/runner.go
+++ b/pkg/lint/runner.go
@@ -34,7 +34,8 @@ type Runner struct {
 
 func NewRunner(log logutils.Log, cfg *config.Config, goenv *goutil.Env,
 	lineCache *fsutils.LineCache, fileCache *fsutils.FileCache,
-	dbManager *lintersdb.Manager, lintCtx *linter.Context) (*Runner, error) {
+	dbManager *lintersdb.Manager, lintCtx *linter.Context,
+) (*Runner, error) {
 	// Beware that some processors need to add the path prefix when working with paths
 	// because they get invoked before the path prefixer (exclude and severity rules)
 	// or process other paths (skip files).
@@ -129,7 +130,8 @@ func (r *Runner) Run(ctx context.Context, linters []*linter.Config) ([]result.Is
 }
 
 func (r *Runner) runLinterSafe(ctx context.Context, lintCtx *linter.Context,
-	lc *linter.Config) (ret []result.Issue, err error) {
+	lc *linter.Config,
+) (ret []result.Issue, err error) {
 	defer func() {
 		if panicData := recover(); panicData != nil {
 			if pe, ok := panicData.(*errorutil.PanicError); ok {
diff --git a/pkg/logutils/out.go b/pkg/logutils/out.go
index 67c70dc8..ef137548 100644
--- a/pkg/logutils/out.go
+++ b/pkg/logutils/out.go
@@ -5,5 +5,7 @@ import (
 	colorable "github.com/mattn/go-colorable"
 )
 
-var StdOut = color.Output // https://github.com/golangci/golangci-lint/issues/14
-var StdErr = colorable.NewColorableStderr()
+var (
+	StdOut = color.Output // https://github.com/golangci/golangci-lint/issues/14
+	StdErr = colorable.NewColorableStderr()
+)
diff --git a/pkg/printers/printer.go b/pkg/printers/printer.go
index a42fda7e..ba2bd2d3 100644
--- a/pkg/printers/printer.go
+++ b/pkg/printers/printer.go
@@ -13,7 +13,7 @@ import (
 	"github.com/golangci/golangci-lint/pkg/result"
 )
 
-const defaultFileMode = 0644
+const defaultFileMode = 0o644
 
 type issuePrinter interface {
 	Print(issues []result.Issue) error
diff --git a/pkg/result/processors/identifier_marker.go b/pkg/result/processors/identifier_marker.go
index 6c971023..1975f6d0 100644
--- a/pkg/result/processors/identifier_marker.go
+++ b/pkg/result/processors/identifier_marker.go
@@ -31,27 +31,39 @@ var replacePatterns = []replacePattern{
 	{`^composites: (\S+) composite literal uses unkeyed fields$`, "composites: `${1}` composite literal uses unkeyed fields"},
 
 	// gosec
-	{`^(\S+): Blacklisted import (\S+): weak cryptographic primitive$`,
-		"${1}: Blacklisted import `${2}`: weak cryptographic primitive"},
+	{
+		`^(\S+): Blacklisted import (\S+): weak cryptographic primitive$`,
+		"${1}: Blacklisted import `${2}`: weak cryptographic primitive",
+	},
 	{`^TLS InsecureSkipVerify set true.$`, "TLS `InsecureSkipVerify` set true."},
 
 	// gosimple
 	{`should replace loop with (.*)$`, "should replace loop with `${1}`"},
-	{`should use a simple channel send/receive instead of select with a single case`,
-		"should use a simple channel send/receive instead of `select` with a single case"},
-	{`should omit comparison to bool constant, can be simplified to (.+)$`,
-		"should omit comparison to bool constant, can be simplified to `${1}`"},
+	{
+		`should use a simple channel send/receive instead of select with a single case`,
+		"should use a simple channel send/receive instead of `select` with a single case",
+	},
+	{
+		`should omit comparison to bool constant, can be simplified to (.+)$`,
+		"should omit comparison to bool constant, can be simplified to `${1}`",
+	},
 	{`should write (.+) instead of (.+)$`, "should write `${1}` instead of `${2}`"},
 	{`redundant return statement$`, "redundant `return` statement"},
-	{`should replace this if statement with an unconditional strings.TrimPrefix`,
-		"should replace this `if` statement with an unconditional `strings.TrimPrefix`"},
+	{
+		`should replace this if statement with an unconditional strings.TrimPrefix`,
+		"should replace this `if` statement with an unconditional `strings.TrimPrefix`",
+	},
 
 	// staticcheck
 	{`this value of (\S+) is never used$`, "this value of `${1}` is never used"},
-	{`should use time.Since instead of time.Now\(\).Sub$`,
-		"should use `time.Since` instead of `time.Now().Sub`"},
-	{`should check returned error before deferring response.Close\(\)$`,
-		"should check returned error before deferring `response.Close()`"},
+	{
+		`should use time.Since instead of time.Now\(\).Sub$`,
+		"should use `time.Since` instead of `time.Now().Sub`",
+	},
+	{
+		`should check returned error before deferring response.Close\(\)$`,
+		"should check returned error before deferring `response.Close()`",
+	},
 	{`no value of type uint is less than 0$`, "no value of type `uint` is less than `0`"},
 
 	// unused
@@ -59,26 +71,40 @@ var replacePatterns = []replacePattern{
 
 	// typecheck
 	{`^unknown field (\S+) in struct literal$`, "unknown field `${1}` in struct literal"},
-	{`^invalid operation: (\S+) \(variable of type (\S+)\) has no field or method (\S+)$`,
-		"invalid operation: `${1}` (variable of type `${2}`) has no field or method `${3}`"},
+	{
+		`^invalid operation: (\S+) \(variable of type (\S+)\) has no field or method (\S+)$`,
+		"invalid operation: `${1}` (variable of type `${2}`) has no field or method `${3}`",
+	},
 	{`^undeclared name: (\S+)$`, "undeclared name: `${1}`"},
-	{`^cannot use addr \(variable of type (\S+)\) as (\S+) value in argument to (\S+)$`,
-		"cannot use addr (variable of type `${1}`) as `${2}` value in argument to `${3}`"},
+	{
+		`^cannot use addr \(variable of type (\S+)\) as (\S+) value in argument to (\S+)$`,
+		"cannot use addr (variable of type `${1}`) as `${2}` value in argument to `${3}`",
+	},
 	{`^other declaration of (\S+)$`, "other declaration of `${1}`"},
 	{`^(\S+) redeclared in this block$`, "`${1}` redeclared in this block"},
 
 	// golint
-	{`^exported (type|method|function|var|const) (\S+) should have comment or be unexported$`,
-		"exported ${1} `${2}` should have comment or be unexported"},
-	{`^comment on exported (type|method|function|var|const) (\S+) should be of the form "(\S+) ..."$`,
-		"comment on exported ${1} `${2}` should be of the form `${3} ...`"},
+	{
+		`^exported (type|method|function|var|const) (\S+) should have comment or be unexported$`,
+		"exported ${1} `${2}` should have comment or be unexported",
+	},
+	{
+		`^comment on exported (type|method|function|var|const) (\S+) should be of the form "(\S+) ..."$`,
+		"comment on exported ${1} `${2}` should be of the form `${3} ...`",
+	},
 	{`^should replace (.+) with (.+)$`, "should replace `${1}` with `${2}`"},
-	{`^if block ends with a return statement, so drop this else and outdent its block$`,
-		"`if` block ends with a `return` statement, so drop this `else` and outdent its block"},
-	{`^(struct field|var|range var|const|type|(?:func|method|interface method) (?:parameter|result)) (\S+) should be (\S+)$`,
-		"${1} `${2}` should be `${3}`"},
-	{`^don't use underscores in Go names; var (\S+) should be (\S+)$`,
-		"don't use underscores in Go names; var `${1}` should be `${2}`"},
+	{
+		`^if block ends with a return statement, so drop this else and outdent its block$`,
+		"`if` block ends with a `return` statement, so drop this `else` and outdent its block",
+	},
+	{
+		`^(struct field|var|range var|const|type|(?:func|method|interface method) (?:parameter|result)) (\S+) should be (\S+)$`,
+		"${1} `${2}` should be `${3}`",
+	},
+	{
+		`^don't use underscores in Go names; var (\S+) should be (\S+)$`,
+		"don't use underscores in Go names; var `${1}` should be `${2}`",
+	},
 }
 
 type IdentifierMarker struct {
diff --git a/pkg/result/processors/identifier_marker_test.go b/pkg/result/processors/identifier_marker_test.go
index 831d3758..bef3f06a 100644
--- a/pkg/result/processors/identifier_marker_test.go
+++ b/pkg/result/processors/identifier_marker_test.go
@@ -13,39 +13,61 @@ func TestIdentifierMarker(t *testing.T) {
 	//nolint:lll
 	cases := []struct{ in, out string }{
 		{"unknown field Address in struct literal", "unknown field `Address` in struct literal"},
-		{"invalid operation: res (variable of type github.com/iotexproject/iotex-core/explorer/idl/explorer.GetBlkOrActResponse) has no field or method Address",
-			"invalid operation: `res` (variable of type `github.com/iotexproject/iotex-core/explorer/idl/explorer.GetBlkOrActResponse`) has no field or method `Address`"},
-		{"should use a simple channel send/receive instead of select with a single case",
-			"should use a simple channel send/receive instead of `select` with a single case"},
+		{
+			"invalid operation: res (variable of type github.com/iotexproject/iotex-core/explorer/idl/explorer.GetBlkOrActResponse) has no field or method Address",
+			"invalid operation: `res` (variable of type `github.com/iotexproject/iotex-core/explorer/idl/explorer.GetBlkOrActResponse`) has no field or method `Address`",
+		},
+		{
+			"should use a simple channel send/receive instead of select with a single case",
+			"should use a simple channel send/receive instead of `select` with a single case",
+		},
 		{"var testInputs is unused", "var `testInputs` is unused"},
 		{"undeclared name: stateIDLabel", "undeclared name: `stateIDLabel`"},
-		{"exported type Metrics should have comment or be unexported",
-			"exported type `Metrics` should have comment or be unexported"},
-		{`comment on exported function NewMetrics should be of the form "NewMetrics ..."`,
-			"comment on exported function `NewMetrics` should be of the form `NewMetrics ...`"},
-		{"cannot use addr (variable of type string) as github.com/iotexproject/iotex-core/pkg/keypair.PublicKey value in argument to action.FakeSeal",
-			"cannot use addr (variable of type `string`) as `github.com/iotexproject/iotex-core/pkg/keypair.PublicKey` value in argument to `action.FakeSeal`"},
+		{
+			"exported type Metrics should have comment or be unexported",
+			"exported type `Metrics` should have comment or be unexported",
+		},
+		{
+			`comment on exported function NewMetrics should be of the form "NewMetrics ..."`,
+			"comment on exported function `NewMetrics` should be of the form `NewMetrics ...`",
+		},
+		{
+			"cannot use addr (variable of type string) as github.com/iotexproject/iotex-core/pkg/keypair.PublicKey value in argument to action.FakeSeal",
+			"cannot use addr (variable of type `string`) as `github.com/iotexproject/iotex-core/pkg/keypair.PublicKey` value in argument to `action.FakeSeal`",
+		},
 		{"other declaration of out", "other declaration of `out`"},
 		{"should check returned error before deferring response.Close()", "should check returned error before deferring `response.Close()`"},
 		{"should use time.Since instead of time.Now().Sub", "should use `time.Since` instead of `time.Now().Sub`"},
 		{"TestFibZeroCount redeclared in this block", "`TestFibZeroCount` redeclared in this block"},
 		{"should replace i += 1 with i++", "should replace `i += 1` with `i++`"},
 		{"createEntry - result err is always nil", "`createEntry` - result `err` is always `nil`"},
-		{"should omit comparison to bool constant, can be simplified to !projectIntegration.Model.Storage",
-			"should omit comparison to bool constant, can be simplified to `!projectIntegration.Model.Storage`"},
-		{"if block ends with a return statement, so drop this else and outdent its block",
-			"`if` block ends with a `return` statement, so drop this `else` and outdent its block"},
-		{"should write pupData := ms.m[pupID] instead of pupData, _ := ms.m[pupID]",
-			"should write `pupData := ms.m[pupID]` instead of `pupData, _ := ms.m[pupID]`"},
+		{
+			"should omit comparison to bool constant, can be simplified to !projectIntegration.Model.Storage",
+			"should omit comparison to bool constant, can be simplified to `!projectIntegration.Model.Storage`",
+		},
+		{
+			"if block ends with a return statement, so drop this else and outdent its block",
+			"`if` block ends with a `return` statement, so drop this `else` and outdent its block",
+		},
+		{
+			"should write pupData := ms.m[pupID] instead of pupData, _ := ms.m[pupID]",
+			"should write `pupData := ms.m[pupID]` instead of `pupData, _ := ms.m[pupID]`",
+		},
 		{"no value of type uint is less than 0", "no value of type `uint` is less than `0`"},
 		{"redundant return statement", "redundant `return` statement"},
 		{"struct field Id should be ID", "struct field `Id` should be `ID`"},
-		{"don't use underscores in Go names; var Go_lint should be GoLint",
-			"don't use underscores in Go names; var `Go_lint` should be `GoLint`"},
-		{"G501: Blacklisted import crypto/md5: weak cryptographic primitive",
-			"G501: Blacklisted import `crypto/md5`: weak cryptographic primitive"},
-		{"S1017: should replace this if statement with an unconditional strings.TrimPrefix",
-			"S1017: should replace this `if` statement with an unconditional `strings.TrimPrefix`"},
+		{
+			"don't use underscores in Go names; var Go_lint should be GoLint",
+			"don't use underscores in Go names; var `Go_lint` should be `GoLint`",
+		},
+		{
+			"G501: Blacklisted import crypto/md5: weak cryptographic primitive",
+			"G501: Blacklisted import `crypto/md5`: weak cryptographic primitive",
+		},
+		{
+			"S1017: should replace this if statement with an unconditional strings.TrimPrefix",
+			"S1017: should replace this `if` statement with an unconditional `strings.TrimPrefix`",
+		},
 	}
 	p := NewIdentifierMarker()
 
diff --git a/pkg/result/processors/max_per_file_from_linter.go b/pkg/result/processors/max_per_file_from_linter.go
index 51939fce..372f40cc 100644
--- a/pkg/result/processors/max_per_file_from_linter.go
+++ b/pkg/result/processors/max_per_file_from_linter.go
@@ -5,8 +5,10 @@ import (
 	"github.com/golangci/golangci-lint/pkg/result"
 )
 
-type linterToCountMap map[string]int
-type fileToLinterToCountMap map[string]linterToCountMap
+type (
+	linterToCountMap       map[string]int
+	fileToLinterToCountMap map[string]linterToCountMap
+)
 
 type MaxPerFileFromLinter struct {
 	flc                        fileToLinterToCountMap
diff --git a/pkg/result/processors/nolint.go b/pkg/result/processors/nolint.go
index 189430bb..48be85b6 100644
--- a/pkg/result/processors/nolint.go
+++ b/pkg/result/processors/nolint.go
@@ -18,8 +18,10 @@ import (
 	"github.com/golangci/golangci-lint/pkg/result"
 )
 
-var nolintDebugf = logutils.Debug(logutils.DebugKeyNolint)
-var nolintRe = regexp.MustCompile(`^nolint( |:|$)`)
+var (
+	nolintDebugf = logutils.Debug(logutils.DebugKeyNolint)
+	nolintRe     = regexp.MustCompile(`^nolint( |:|$)`)
+)
 
 type ignoredRange struct {
 	linters                []string
diff --git a/pkg/result/processors/nolint_test.go b/pkg/result/processors/nolint_test.go
index d6fb56a8..bca041da 100644
--- a/pkg/result/processors/nolint_test.go
+++ b/pkg/result/processors/nolint_test.go
@@ -192,7 +192,7 @@ func TestNolintAliases(t *testing.T) {
 }
 
 func TestIgnoredRangeMatches(t *testing.T) {
-	var testcases = []struct {
+	testcases := []struct {
 		doc      string
 		issue    result.Issue
 		linters  []string
diff --git a/pkg/result/processors/uniq_by_line.go b/pkg/result/processors/uniq_by_line.go
index a7ca4467..aad1e019 100644
--- a/pkg/result/processors/uniq_by_line.go
+++ b/pkg/result/processors/uniq_by_line.go
@@ -5,8 +5,10 @@ import (
 	"github.com/golangci/golangci-lint/pkg/result"
 )
 
-type lineToCount map[int]int
-type fileToLineToCount map[string]lineToCount
+type (
+	lineToCount       map[int]int
+	fileToLineToCount map[string]lineToCount
+)
 
 type UniqByLine struct {
 	flc fileToLineToCount
diff --git a/scripts/website/expand_templates/linters.go b/scripts/website/expand_templates/linters.go
index 27dcc07b..3c7a42db 100644
--- a/scripts/website/expand_templates/linters.go
+++ b/scripts/website/expand_templates/linters.go
@@ -256,7 +256,7 @@ func getLintersSettingSections(node, nextNode *yaml.Node) (string, error) {
 		return "", err
 	}
 
-	var lintersDesc = make(map[string]string)
+	lintersDesc := make(map[string]string)
 	for _, lc := range linters {
 		if lc.Internal {
 			continue