Mark fields — Fileforge

This documentation provides an example of how to use the FileforgeClient to mark form fields in a PDF document. This endpoint returns modified version of the PDF you submit with form fields marked with a green border, and hover text showing the field name.

Prerequisites

Ensure you have the following:

An API key for Fileforge as an environment variable: process.env.FILEFORGE_API_KEY
Node.js and npm installed.
The Fileforge Client installed.

Guide

Mark form fields from the PDF and retrieve a modified PDF

1 import { FileforgeClient } from "@fileforge/client";
2 import * as fs from "fs";
3 
4 (async () => {
5     const ff = new FileforgeClient({
6       apiKey: process.env.FILEFORGE_API_KEY,
7     });
8 
9     try {
10       const pdfStream = await ff.pdf.form.mark(
11         new File(
12           [fs.readFileSync(__dirname + "/samples/form.pdf")],
13           "form.pdf",
14           {
15             type: "application/pdf",
16           },
17         ),
18         { options: {} },
19       );
20 
21       pdfStream.pipe(fs.createWriteStream("./result_mark.pdf"));
22     } catch (error) {
23       console.error("Error during PDF form mark:", error);
24       throw error;
25     }
26   })();

Get a modified PDF

The reponse is stream of the modified PDF with form fields marked with a green border, and hover text showing the field name.

1	import { FileforgeClient } from "@fileforge/client";
2	import * as fs from "fs";
3
4	(async () => {
5	const ff = new FileforgeClient({
6	apiKey: process.env.FILEFORGE_API_KEY,
7	});
8
9	try {
10	const pdfStream = await ff.pdf.form.mark(
11	new File(
12	[fs.readFileSync(__dirname + "/samples/form.pdf")],
13	"form.pdf",
14	{
15	type: "application/pdf",
16	},
17	),
18	{ options: {} },
19	);
20
21	pdfStream.pipe(fs.createWriteStream("./result_mark.pdf"));
22	} catch (error) {
23	console.error("Error during PDF form mark:", error);
24	throw error;
25	}
26	})();