diff --git a/models/issues/pull.go b/models/issues/pull.go
index ae7fb35eab..ef49a51045 100644
--- a/models/issues/pull.go
+++ b/models/issues/pull.go
@@ -431,6 +431,21 @@ func (pr *PullRequest) GetGitHeadBranchRefName() string {
 	return fmt.Sprintf("%s%s", git.BranchPrefix, pr.HeadBranch)
 }
 
+// GetReviewCommentsCount returns the number of review comments made on the diff of a PR review (not including comments on commits or issues in a PR)
+func (pr *PullRequest) GetReviewCommentsCount(ctx context.Context) int {
+	opts := FindCommentsOptions{
+		Type:    CommentTypeReview,
+		IssueID: pr.IssueID,
+	}
+	conds := opts.ToConds()
+
+	count, err := db.GetEngine(ctx).Where(conds).Count(new(Comment))
+	if err != nil {
+		return 0
+	}
+	return int(count)
+}
+
 // IsChecking returns true if this pull request is still checking conflict.
 func (pr *PullRequest) IsChecking() bool {
 	return pr.Status == PullRequestStatusChecking
diff --git a/modules/structs/issue.go b/modules/structs/issue.go
index e2b49e94c5..7ba7f77158 100644
--- a/modules/structs/issue.go
+++ b/modules/structs/issue.go
@@ -30,6 +30,7 @@ type PullRequestMeta struct {
 	HasMerged        bool       `json:"merged"`
 	Merged           *time.Time `json:"merged_at"`
 	IsWorkInProgress bool       `json:"draft"`
+	HTMLURL          string     `json:"html_url"`
 }
 
 // RepositoryMeta basic repository information
diff --git a/modules/structs/pull.go b/modules/structs/pull.go
index b04def52b8..525d90c28e 100644
--- a/modules/structs/pull.go
+++ b/modules/structs/pull.go
@@ -21,8 +21,14 @@ type PullRequest struct {
 	Assignees          []*User    `json:"assignees"`
 	RequestedReviewers []*User    `json:"requested_reviewers"`
 	State              StateType  `json:"state"`
+	Draft              bool       `json:"draft"`
 	IsLocked           bool       `json:"is_locked"`
 	Comments           int        `json:"comments"`
+	// number of review comments made on the diff of a PR review (not including comments on commits or issues in a PR)
+	ReviewComments int `json:"review_comments"`
+	Additions      int `json:"additions"`
+	Deletions      int `json:"deletions"`
+	ChangedFiles   int `json:"changed_files"`
 
 	HTMLURL  string `json:"html_url"`
 	DiffURL  string `json:"diff_url"`
diff --git a/modules/structs/user.go b/modules/structs/user.go
index ad529c966e..be20349e53 100644
--- a/modules/structs/user.go
+++ b/modules/structs/user.go
@@ -27,6 +27,8 @@ type User struct {
 	Email string `json:"email"`
 	// URL to the user's avatar
 	AvatarURL string `json:"avatar_url"`
+	// URL to the user's gitea page
+	HTMLURL string `json:"html_url"`
 	// User locale
 	Language string `json:"language"`
 	// Is the user an administrator
diff --git a/services/convert/issue.go b/services/convert/issue.go
index 047feb8aa7..f514dc4313 100644
--- a/services/convert/issue.go
+++ b/services/convert/issue.go
@@ -107,6 +107,8 @@ func toIssue(ctx context.Context, doer *user_model.User, issue *issues_model.Iss
 			if issue.PullRequest.HasMerged {
 				apiIssue.PullRequest.Merged = issue.PullRequest.MergedUnix.AsTimePtr()
 			}
+			// Add pr's html url
+			apiIssue.PullRequest.HTMLURL = issue.HTMLURL()
 		}
 	}
 	if issue.DeadlineUnix != 0 {
diff --git a/services/convert/pull.go b/services/convert/pull.go
index da75cb3db2..c214805ed5 100644
--- a/services/convert/pull.go
+++ b/services/convert/pull.go
@@ -61,29 +61,31 @@ func ToAPIPullRequest(ctx context.Context, pr *issues_model.PullRequest, doer *u
 	}
 
 	apiPullRequest := &api.PullRequest{
-		ID:        pr.ID,
-		URL:       pr.Issue.HTMLURL(),
-		Index:     pr.Index,
-		Poster:    apiIssue.Poster,
-		Title:     apiIssue.Title,
-		Body:      apiIssue.Body,
-		Labels:    apiIssue.Labels,
-		Milestone: apiIssue.Milestone,
-		Assignee:  apiIssue.Assignee,
-		Assignees: apiIssue.Assignees,
-		State:     apiIssue.State,
-		IsLocked:  apiIssue.IsLocked,
-		Comments:  apiIssue.Comments,
-		HTMLURL:   pr.Issue.HTMLURL(),
-		DiffURL:   pr.Issue.DiffURL(),
-		PatchURL:  pr.Issue.PatchURL(),
-		HasMerged: pr.HasMerged,
-		MergeBase: pr.MergeBase,
-		Mergeable: pr.Mergeable(ctx),
-		Deadline:  apiIssue.Deadline,
-		Created:   pr.Issue.CreatedUnix.AsTimePtr(),
-		Updated:   pr.Issue.UpdatedUnix.AsTimePtr(),
-		PinOrder:  apiIssue.PinOrder,
+		ID:             pr.ID,
+		URL:            pr.Issue.HTMLURL(),
+		Index:          pr.Index,
+		Poster:         apiIssue.Poster,
+		Title:          apiIssue.Title,
+		Body:           apiIssue.Body,
+		Labels:         apiIssue.Labels,
+		Milestone:      apiIssue.Milestone,
+		Assignee:       apiIssue.Assignee,
+		Assignees:      apiIssue.Assignees,
+		State:          apiIssue.State,
+		Draft:          pr.IsWorkInProgress(ctx),
+		IsLocked:       apiIssue.IsLocked,
+		Comments:       apiIssue.Comments,
+		ReviewComments: pr.GetReviewCommentsCount(ctx),
+		HTMLURL:        pr.Issue.HTMLURL(),
+		DiffURL:        pr.Issue.DiffURL(),
+		PatchURL:       pr.Issue.PatchURL(),
+		HasMerged:      pr.HasMerged,
+		MergeBase:      pr.MergeBase,
+		Mergeable:      pr.Mergeable(ctx),
+		Deadline:       apiIssue.Deadline,
+		Created:        pr.Issue.CreatedUnix.AsTimePtr(),
+		Updated:        pr.Issue.UpdatedUnix.AsTimePtr(),
+		PinOrder:       apiIssue.PinOrder,
 
 		AllowMaintainerEdit: pr.AllowMaintainerEdit,
 
@@ -178,6 +180,12 @@ func ToAPIPullRequest(ctx context.Context, pr *issues_model.PullRequest, doer *u
 			return nil
 		}
 
+		// Outer scope variables to be used in diff calculation
+		var (
+			startCommitID string
+			endCommitID   string
+		)
+
 		if git.IsErrBranchNotExist(err) {
 			headCommitID, err := headGitRepo.GetRefCommitID(apiPullRequest.Head.Ref)
 			if err != nil && !git.IsErrNotExist(err) {
@@ -186,6 +194,7 @@ func ToAPIPullRequest(ctx context.Context, pr *issues_model.PullRequest, doer *u
 			}
 			if err == nil {
 				apiPullRequest.Head.Sha = headCommitID
+				endCommitID = headCommitID
 			}
 		} else {
 			commit, err := headBranch.GetCommit()
@@ -196,8 +205,17 @@ func ToAPIPullRequest(ctx context.Context, pr *issues_model.PullRequest, doer *u
 			if err == nil {
 				apiPullRequest.Head.Ref = pr.HeadBranch
 				apiPullRequest.Head.Sha = commit.ID.String()
+				endCommitID = commit.ID.String()
 			}
 		}
+
+		// Calculate diff
+		startCommitID = pr.MergeBase
+
+		apiPullRequest.ChangedFiles, apiPullRequest.Additions, apiPullRequest.Deletions, err = gitRepo.GetDiffShortStat(startCommitID, endCommitID)
+		if err != nil {
+			log.Error("GetDiffShortStat: %v", err)
+		}
 	}
 
 	if len(apiPullRequest.Head.Sha) == 0 && len(apiPullRequest.Head.Ref) != 0 {
diff --git a/services/convert/user.go b/services/convert/user.go
index 789bc51097..94a400de5d 100644
--- a/services/convert/user.go
+++ b/services/convert/user.go
@@ -53,6 +53,7 @@ func toUser(ctx context.Context, user *user_model.User, signed, authed bool) *ap
 		FullName:    user.FullName,
 		Email:       user.GetPlaceholderEmail(),
 		AvatarURL:   user.AvatarLink(ctx),
+		HTMLURL:     user.HTMLURL(),
 		Created:     user.CreatedUnix.AsTime(),
 		Restricted:  user.IsRestricted,
 		Location:    user.Location,
diff --git a/templates/swagger/v1_json.tmpl b/templates/swagger/v1_json.tmpl
index 6a488559a0..8e9ee8b5cd 100644
--- a/templates/swagger/v1_json.tmpl
+++ b/templates/swagger/v1_json.tmpl
@@ -23413,6 +23413,11 @@
       "description": "PullRequest represents a pull request",
       "type": "object",
       "properties": {
+        "additions": {
+          "type": "integer",
+          "format": "int64",
+          "x-go-name": "Additions"
+        },
         "allow_maintainer_edit": {
           "type": "boolean",
           "x-go-name": "AllowMaintainerEdit"
@@ -23434,6 +23439,11 @@
           "type": "string",
           "x-go-name": "Body"
         },
+        "changed_files": {
+          "type": "integer",
+          "format": "int64",
+          "x-go-name": "ChangedFiles"
+        },
         "closed_at": {
           "type": "string",
           "format": "date-time",
@@ -23449,10 +23459,19 @@
           "format": "date-time",
           "x-go-name": "Created"
         },
+        "deletions": {
+          "type": "integer",
+          "format": "int64",
+          "x-go-name": "Deletions"
+        },
         "diff_url": {
           "type": "string",
           "x-go-name": "DiffURL"
         },
+        "draft": {
+          "type": "boolean",
+          "x-go-name": "Draft"
+        },
         "due_date": {
           "type": "string",
           "format": "date-time",
@@ -23529,6 +23548,12 @@
           },
           "x-go-name": "RequestedReviewers"
         },
+        "review_comments": {
+          "description": "number of review comments made on the diff of a PR review (not including comments on commits or issues in a PR)",
+          "type": "integer",
+          "format": "int64",
+          "x-go-name": "ReviewComments"
+        },
         "state": {
           "$ref": "#/definitions/StateType"
         },
@@ -23559,6 +23584,10 @@
           "type": "boolean",
           "x-go-name": "IsWorkInProgress"
         },
+        "html_url": {
+          "type": "string",
+          "x-go-name": "HTMLURL"
+        },
         "merged": {
           "type": "boolean",
           "x-go-name": "HasMerged"
@@ -24904,6 +24933,11 @@
           "type": "string",
           "x-go-name": "FullName"
         },
+        "html_url": {
+          "description": "URL to the user's gitea page",
+          "type": "string",
+          "x-go-name": "HTMLURL"
+        },
         "id": {
           "description": "the user's id",
           "type": "integer",