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Render each PDF page at the size you need, then save one image file per page. For a one-off conversion, use Acrobat’s page-export workflow. For repeatable jobs, render pages with PDF.js (or use a documented PDF conversion API) and write each completed canvas to PNG or JPEG. This captures the entire page, including text, vector artwork and layout; it is different from extracting the original image objects embedded inside the PDF.
Choose the right kind of capture
A PDF can contain photographs, diagrams and scanned pages as separate image objects. Extracting those objects gives you the files stored inside the document, not a screenshot of the finished page. A page screenshot is a raster rendering of everything visible on that page. Use page rendering when you need a faithful visual record of the page layout, margins, text and graphics.
| Method | Best for | What you control | Important limitation |
|---|---|---|---|
| Acrobat export | A single document or occasional jobs | Image format and export settings offered by your Acrobat edition | Menu labels and available settings vary by release |
| PDF.js rendering | Scripts, web applications and repeatable batches | Viewport scale, pixel dimensions and file naming | You must manage canvas memory and file writing |
| Adobe PDF Services | Server-side automated conversion | API input and JPEG page-image output | Current account, SDK and service conditions must be checked in Adobe’s documentation |
Method 1: Export every page in Acrobat
Adobe’s Acrobat support procedure exports the pages of a PDF to an image format. The exact wording can differ between desktop versions and operating systems, so treat the labels below as a map rather than a guaranteed pixel-for-pixel menu path.
- Open the PDF in Acrobat.
- Choose the command for exporting or converting the PDF to an image format, then select the format you need. Acrobat’s documented procedure uses JPEG as an example.
- Choose the destination folder and confirm the export. Acrobat saves the pages as separate image files.
- Open several output files and check that page order, cropping and resolution meet your requirement before deleting the original PDF.
Do not select “Export All Images” for page screenshots
Acrobat distinguishes between saving pages and extracting images. The Export All Images option changes the operation to extracting image objects contained in the PDF. Leave that option off when the goal is one image of each complete page. Turn it on only when you specifically need the original photographs or diagrams embedded in the file.
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When the export result looks wrong
- If files show only photographs or logos, you extracted image objects rather than rendered pages.
- If small text is unreadable, use a higher-resolution export setting or switch to programmatic rendering where you can set a target pixel width.
- If a page is clipped, inspect the PDF’s page boxes and Acrobat’s export settings; the screenshot should follow the page boundary, not a hand-drawn crop.
Method 2: Render all pages with PDF.js
PDF.js renders a page into a canvas. Its viewport has a scale value that controls the output dimensions. A practical batch strategy is to calculate a scale from a target pixel width, render one page, write the image, release that canvas, and continue with the next page.
Node.js batch script
Install the PDF.js distribution and a Canvas implementation in a Node project:
npm install pdfjs-dist canvasSave this as render-pdf.mjs. It accepts a local PDF path, renders every page to a 1,600-pixel target width, and writes numbered PNG files. Pass jpg as the third argument to produce JPEG files instead.
import fs from 'node:fs/promises';
import { createCanvas } from 'canvas';
import * as pdfjsLib from 'pdfjs-dist/legacy/build/pdf.mjs';
const [, , inputPath, format = 'png'] = process.argv;
if (!inputPath) {
console.error('Usage: node render-pdf.mjs input.pdf [png|jpg]');
process.exit(1);
}
if (!['png', 'jpg'].includes(format)) {
throw new Error('Format must be png or jpg');
}
const loadingTask = pdfjsLib.getDocument({
url: inputPath,
disableWorker: true
});
const pdf = await loadingTask.promise;
const targetWidth = 1600;
for (let pageNumber = 1; pageNumber <= pdf.numPages; pageNumber += 1) {
const page = await pdf.getPage(pageNumber);
const baseViewport = page.getViewport({ scale: 1 });
const scale = targetWidth / baseViewport.width;
const viewport = page.getViewport({ scale });
const canvas = createCanvas(
Math.ceil(viewport.width),
Math.ceil(viewport.height)
);
const context = canvas.getContext('2d');
await page.render({ canvasContext: context, viewport }).promise;
const output = format === 'jpg'
? canvas.toBuffer('image/jpeg', { quality: 0.92 })
: canvas.toBuffer('image/png');
const extension = format === 'jpg' ? 'jpg' : 'png';
const filename = `page-${String(pageNumber).padStart(4, '0')}.${extension}`;
await fs.writeFile(filename, output);
console.log(`Wrote ${filename} (${Math.ceil(viewport.width)}x${Math.ceil(viewport.height)})`);
}Run it with node render-pdf.mjs report.pdf, or node render-pdf.mjs report.pdf jpg. The loop waits for each page.render() promise before moving on, so one canvas is not reused while a render is still in progress.
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Set dimensions deliberately
The script’s 1,600-pixel width is an example, not a universal standard. To target another width, change targetWidth. The page’s aspect ratio is preserved automatically. A larger width produces sharper text but increases processing time, output size and memory use; a smaller width is suitable for thumbnails or web previews.
Browser implementation pattern
In a browser application, the same PDF.js sequence is used: load the document, call pdf.getPage(pageNumber), create a viewport, size a canvas to the viewport, and await page.render({ canvasContext, viewport }).promise. Convert the completed canvas with canvas.toBlob() and download or upload the resulting file before rendering the next page. Worker configuration and bundling depend on how your application imports PDF.js.
Method 3: Automate conversion with Adobe PDF Services
Adobe’s PDF Services documentation describes an API conversion that returns JPEG images for PDF pages. Its example says a 15-page PDF produces 15 image files, with filenames indexed from page 1 through page 15 (the index is unpadded). This is useful when a server must process documents without a desktop application. Follow Adobe’s current setup and authentication instructions for your account and SDK version; those conditions can change.
Resolution, quality and memory
Pick a target based on the destination
- Web display: choose a width close to the largest CSS width at which the image will be shown. Oversized files waste bandwidth.
- Zoomable review: render wider pages or provide multiple resolutions.
- Print workflows: determine the required physical size and effective DPI with the print provider; do not assume that a screen-oriented export is print-ready.
PDF.js exposes scale through the viewport, so dimensions are predictable. Acrobat’s export dialog provides its own resolution controls, but the exact choices depend on the installed version.
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Plan for canvas memory
Each canvas stores pixels, commonly with four bytes per pixel before device-pixel scaling. The PDF.js FAQ gives an illustrative letter-page calculation of 816 × 1,056 pixels at 96 DPI—about 3.5 MB under that assumption. Actual memory varies with page size, scale, browser, pixel ratio and implementation. Do not retain hundreds of high-resolution canvases unless you truly need them. Render sequentially, write each image, then release references. PDF.js’s demo viewer follows the same principle by rendering only visible pages.
File naming and verification
Use zero-padded names such as page-0001.png when your batch can exceed nine pages; alphabetical sorting then matches page order. Keep the original PDF and record the renderer, target width, format and date in your job metadata if the images are evidence or production assets.
- Compare the first, middle and final pages with the PDF.
- Check pages containing transparency, rotated content, annotations or large tables.
- Confirm that the number of image files equals the PDF page count. Adobe’s API example explicitly illustrates 15 pages becoming 15 files.
- Open an output at 100 percent zoom to inspect small type and fine lines.
Troubleshooting
The script cannot load the PDF
Confirm the path is correct and that the process can read the file. For a remote document, download it first or pass PDF.js a supported URL with the required network and cross-origin permissions. A password-protected PDF also requires the appropriate password handling in the loading task.
“Cannot find module” or Canvas build errors
Install both pdfjs-dist and canvas in the same project, use a Node version supported by those packages, and follow the Canvas package’s platform-specific native-library instructions. If your deployment cannot compile native Canvas, use a browser PDF.js renderer or a PDF conversion service instead.
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Pages are blank or partially rendered
Wait for the render promise before exporting the canvas. In a browser, verify that the PDF.js worker is configured for your bundler. For complex PDFs, test the file in a current PDF viewer; a malformed or encrypted document may require repair or credentials before rendering.
Text is fuzzy
Increase the target width or scale. Do not enlarge a finished low-resolution image and expect new detail; rerender the PDF at the required dimensions.
The process runs out of memory
Lower the target width, process pages sequentially, and write each result immediately. Avoid storing a list of canvases or image buffers for the entire document. Very large pages may need to be split into jobs.
The output contains only photos and logos
You used an image-extraction operation. Return to page export or PDF.js rendering to produce a screenshot of each complete page.
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ScreenshotNeo is a website screenshot API, so it is not a replacement for a local PDF renderer when you need to parse an arbitrary PDF file. It is useful when the material is already presented as web pages, or when your workflow also needs consistent screenshots of the HTML surrounding a document. A single GET request returns a PNG, JPEG, WebP or PDF; use the PDF-specific methods above when you need one image for every page in a local PDF.
See the ScreenshotNeo API documentation for current parameters. This cURL example captures a web URL:
curl -G "https://api.screenshotneo.com/v1/shot" -d access_key=YOUR_API_KEY --data-urlencode url=https://stripe.com -o shot.webpPython:
import requests
r = requests.get("https://api.screenshotneo.com/v1/shot", params={"access_key": "YOUR_API_KEY", "url": "https://stripe.com"}, timeout=90)
open("shot.webp", "wb").write(r.content)Node.js:
const q = new URLSearchParams({ access_key: 'YOUR_API_KEY', url: 'https://stripe.com' });
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Frequently Asked Questions
Will a screenshot keep the PDF’s selectable text and links?
No. PNG, JPEG and WebP outputs are raster images. Keep the original PDF when readers need text selection, hyperlinks, accessibility structure or searchable content.
Should I choose PNG or JPEG?
PNG preserves crisp text and line art without lossy compression, while JPEG usually produces smaller files for photographic or scanned pages. Choose based on the page content and delivery size.
Can I create one image per page without installing Acrobat?
Yes. PDF.js can render pages in a browser or in a Node application, and an API such as Adobe PDF Services can automate page-image output on a server.
Why do page numbers in filenames sometimes sort incorrectly?
Unpadded names place page 10 before page 2 in alphabetical listings. Zero-pad the index, for example page-0002 and page-0010, or sort numerically.
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