feat: complete OpenAPI docs with all Puppeteer PDF options

- Add scale, pageRanges, preferCSSPageSize, width, height to PdfOptions
- Add headerTemplate, footerTemplate, displayHeaderFooter to docs
- Pass all options through routes to browser service for HTML, Markdown, and URL endpoints
- Export PdfRenderOptions interface for type reuse
- Bump version to 0.4.5

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "docfast-api",
-  "version": "0.4.3",
+  "version": "0.4.5",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "docfast-api",
-      "version": "0.4.3",
+      "version": "0.4.5",
       "dependencies": {
         "compression": "^1.8.1",
         "express": "^4.21.0",

package.json

@@ -1,6 +1,6 @@
 {
   "name": "docfast-api",
-  "version": "0.4.4",
+  "version": "0.4.5",
   "description": "Markdown/HTML to PDF API with built-in invoice templates",
   "main": "dist/index.js",
   "scripts": {

src/routes/convert.ts

@@ -47,6 +47,14 @@ interface ConvertBody {
   margin?: { top?: string; right?: string; bottom?: string; left?: string };
   printBackground?: boolean;
   filename?: string;
+  headerTemplate?: string;
+  footerTemplate?: string;
+  displayHeaderFooter?: boolean;
+  scale?: number;
+  pageRanges?: string;
+  preferCSSPageSize?: boolean;
+  width?: string;
+  height?: string;
 }
 
 /**
@@ -131,6 +139,14 @@ convertRouter.post("/html", async (req: Request & { acquirePdfSlot?: () => Promi
       landscape: body.landscape,
       margin: body.margin,
       printBackground: body.printBackground,
+      headerTemplate: body.headerTemplate,
+      footerTemplate: body.footerTemplate,
+      displayHeaderFooter: body.displayHeaderFooter,
+      scale: body.scale,
+      pageRanges: body.pageRanges,
+      preferCSSPageSize: body.preferCSSPageSize,
+      width: body.width,
+      height: body.height,
     });
 
     const filename = sanitizeFilename(body.filename || "document.pdf");
@@ -228,6 +244,14 @@ convertRouter.post("/markdown", async (req: Request & { acquirePdfSlot?: () => P
       landscape: body.landscape,
       margin: body.margin,
       printBackground: body.printBackground,
+      headerTemplate: body.headerTemplate,
+      footerTemplate: body.footerTemplate,
+      displayHeaderFooter: body.displayHeaderFooter,
+      scale: body.scale,
+      pageRanges: body.pageRanges,
+      preferCSSPageSize: body.preferCSSPageSize,
+      width: body.width,
+      height: body.height,
     });
 
     const filename = sanitizeFilename(body.filename || "document.pdf");
@@ -310,7 +334,7 @@ convertRouter.post("/url", async (req: Request & { acquirePdfSlot?: () => Promis
       res.status(415).json({ error: "Unsupported Content-Type. Use application/json." });
       return;
     }
-    const body = req.body as { url?: string; format?: string; landscape?: boolean; margin?: any; printBackground?: boolean; waitUntil?: string; filename?: string };
+    const body = req.body as { url?: string; format?: string; landscape?: boolean; margin?: any; printBackground?: boolean; waitUntil?: string; filename?: string; headerTemplate?: string; footerTemplate?: string; displayHeaderFooter?: boolean; scale?: number; pageRanges?: string; preferCSSPageSize?: boolean; width?: string; height?: string };
 
     if (!body.url) {
       res.status(400).json({ error: "Missing 'url' field" });
@@ -355,6 +379,14 @@ convertRouter.post("/url", async (req: Request & { acquirePdfSlot?: () => Promis
       landscape: body.landscape,
       margin: body.margin,
       printBackground: body.printBackground,
+      headerTemplate: body.headerTemplate,
+      footerTemplate: body.footerTemplate,
+      displayHeaderFooter: body.displayHeaderFooter,
+      scale: body.scale,
+      pageRanges: body.pageRanges,
+      preferCSSPageSize: body.preferCSSPageSize,
+      width: body.width,
+      height: body.height,
       waitUntil: body.waitUntil,
       hostResolverRules: `MAP ${parsed.hostname} ${resolvedAddress}`,
     });

src/services/browser.ts

@@ -218,9 +218,7 @@ export async function closeBrowser(): Promise<void> {
   instances.length = 0;
 }
 
-export async function renderPdf(
+export interface PdfRenderOptions {
-  html: string,
-  options: {
   format?: string;
   landscape?: boolean;
   margin?: { top?: string; right?: string; bottom?: string; left?: string };
@@ -228,7 +226,16 @@ export async function renderPdf(
   headerTemplate?: string;
   footerTemplate?: string;
   displayHeaderFooter?: boolean;
-  } = {}
+  scale?: number;
+  pageRanges?: string;
+  preferCSSPageSize?: boolean;
+  width?: string;
+  height?: string;
+}
+
+export async function renderPdf(
+  html: string,
+  options: PdfRenderOptions = {}
 ): Promise<Buffer> {
   const { page, instance } = await acquirePage();
   try {
@@ -245,6 +252,11 @@ export async function renderPdf(
           headerTemplate: options.headerTemplate,
           footerTemplate: options.footerTemplate,
           displayHeaderFooter: options.displayHeaderFooter || false,
+          ...(options.scale !== undefined && { scale: options.scale }),
+          ...(options.pageRanges && { pageRanges: options.pageRanges }),
+          ...(options.preferCSSPageSize !== undefined && { preferCSSPageSize: options.preferCSSPageSize }),
+          ...(options.width && { width: options.width }),
+          ...(options.height && { height: options.height }),
         });
         return Buffer.from(pdf);
       })(),
@@ -260,11 +272,7 @@ export async function renderPdf(
 
 export async function renderUrlPdf(
   url: string,
-  options: {
+  options: PdfRenderOptions & {
-    format?: string;
-    landscape?: boolean;
-    margin?: { top?: string; right?: string; bottom?: string; left?: string };
-    printBackground?: boolean;
     waitUntil?: string;
     hostResolverRules?: string;
   } = {}
@@ -316,6 +324,14 @@ export async function renderUrlPdf(
           landscape: options.landscape || false,
           printBackground: options.printBackground !== false,
           margin: options.margin || { top: "0", right: "0", bottom: "0", left: "0" },
+          ...(options.headerTemplate && { headerTemplate: options.headerTemplate }),
+          ...(options.footerTemplate && { footerTemplate: options.footerTemplate }),
+          ...(options.displayHeaderFooter !== undefined && { displayHeaderFooter: options.displayHeaderFooter }),
+          ...(options.scale !== undefined && { scale: options.scale }),
+          ...(options.pageRanges && { pageRanges: options.pageRanges }),
+          ...(options.preferCSSPageSize !== undefined && { preferCSSPageSize: options.preferCSSPageSize }),
+          ...(options.width && { width: options.width }),
+          ...(options.height && { height: options.height }),
         });
         return Buffer.from(pdf);
       })(),

src/swagger.ts

@@ -49,7 +49,7 @@ const options: swaggerJsdoc.Options = {
               type: "string",
               enum: ["A4", "Letter", "Legal", "A3", "A5", "Tabloid"],
               default: "A4",
-              description: "Page size",
+              description: "Page size. Ignored if width/height are set.",
             },
             landscape: {
               type: "boolean",
@@ -58,6 +58,7 @@ const options: swaggerJsdoc.Options = {
             },
             margin: {
               type: "object",
+              description: "Page margins. Accepts CSS units (e.g. '20mm', '1in', '72px').",
               properties: {
                 top: { type: "string", example: "20mm" },
                 bottom: { type: "string", example: "20mm" },
@@ -68,12 +69,53 @@ const options: swaggerJsdoc.Options = {
             printBackground: {
               type: "boolean",
               default: true,
-              description: "Print background graphics",
+              description: "Print background graphics and colors",
             },
             filename: {
               type: "string",
               default: "document.pdf",
-              description: "Suggested filename for the PDF",
+              description: "Suggested filename for the PDF download",
+            },
+            headerTemplate: {
+              type: "string",
+              description: "HTML template for the page header. Requires displayHeaderFooter: true. Use these CSS classes for dynamic values: date, title, url, pageNumber, totalPages. Example: '<span class=\"pageNumber\"></span> / <span class=\"totalPages\"></span>'",
+            },
+            footerTemplate: {
+              type: "string",
+              description: "HTML template for the page footer. Requires displayHeaderFooter: true. Supports the same CSS classes as headerTemplate.",
+            },
+            displayHeaderFooter: {
+              type: "boolean",
+              default: false,
+              description: "Whether to show header and footer templates. Must be true for headerTemplate/footerTemplate to render.",
+            },
+            scale: {
+              type: "number",
+              minimum: 0.1,
+              maximum: 2,
+              default: 1,
+              description: "Scale of the webpage rendering. 1 = 100%, 0.5 = 50%, 2 = 200%.",
+              example: 1,
+            },
+            pageRanges: {
+              type: "string",
+              description: "Paper ranges to print, e.g. '1-5', '1,3,5', '2-4,6'. Empty string means all pages.",
+              example: "1-3",
+            },
+            preferCSSPageSize: {
+              type: "boolean",
+              default: false,
+              description: "Give any CSS @page size declared in the page priority over the format option.",
+            },
+            width: {
+              type: "string",
+              description: "Paper width with units. Overrides format. Accepts CSS units (e.g. '10in', '210mm', '8.5in').",
+              example: "8.5in",
+            },
+            height: {
+              type: "string",
+              description: "Paper height with units. Overrides format. Accepts CSS units (e.g. '11in', '297mm').",
+              example: "11in",
             },
           },
         },