Convert PDF to JPG online free — high quality export

When you actually need PDF-to-JPG (and when you do not)

Three common use cases:

• Web embedding. A blog post or web page that needs to display individual PDF pages inline as images, where the reader does not need to download or interact with the PDF itself.
• Email-friendly previews. A small JPG preview is much smaller than a full PDF; useful when the email recipient just needs to see one page.
• Image-based workflows. Pipelines that consume images (image annotation tools, vision models, OCR pre-processing, photo-editing programs) need JPG or PNG, not PDF.

For most other use cases — sharing a document, archiving, accessibility — the original PDF is the better format. Converting to JPG loses searchability, text extraction, and any vector crispness. Only convert when an image is actually what you need.

Four image formats — when each one fits

For pages that are primarily text (a manual, a report, a contract), PNG keeps the text crisp.¹ For pages that are primarily photographs or full-page graphics, JPEG produces smaller files at acceptable quality.² For pages that mix the two (a typical brochure page), pick PNG for the cleaner text even if the file is slightly larger.

DPI — pick the right resolution

DPI (dots per inch) controls how many pixels the converter generates for each inch of the original PDF page. Higher DPI = sharper image, larger file. The right DPI depends on the intended use:

300 DPI is the de-facto standard for printed materials and the threshold the US National Archives uses for digitisation guidance.³ For most workflows, 300 DPI is the right pick; 150 DPI for web-only thumbnails; 600 DPI for archival or OCR pre-processing.

Converting via ScoutMyTool — five steps

1. Open the tool. Go to scoutmytool.com/pdf/pdf-to-jpg (or PDF to PNG for the lossless variant). The tool runs entirely in your browser tab.
2. Drop in the PDF. The tool parses the file with pdf-lib and prepares to rasterise each page.
3. Pick DPI and quality. 150 / 300 / 600 are the common picks. For JPEG, also pick a quality setting (1-100) — 85-90 is the sweet spot for most uses. For PNG, no quality setting (lossless).
4. Pick page range. All pages, or a specific range (1-5, 10, 15-20). For per-page output, the tool produces a zip with one image per page.
5. Convert and download. The result downloads as either a single image (for single-page PDFs) or a zip of images (for multi-page). Verify a couple of pages render correctly before relying on the full batch.

The CLI path — pdftoppm for batches

For Linux / macOS workflows on many PDFs, the Poppler-utilities pdftoppm command is the right tool:

# 300 DPI JPEG output, one file per page (page-1.jpg, page-2.jpg, ...)
pdftoppm -r 300 -jpeg document.pdf page

# 600 DPI PNG output for OCR or archival
pdftoppm -r 600 -png document.pdf page

# Just the first 5 pages
pdftoppm -r 300 -jpeg -f 1 -l 5 document.pdf page

# Batch a directory
for f in *.pdf; do
  basename=${f%.pdf}
  pdftoppm -r 300 -jpeg "$f" "$basename"
done

pdftoppm is part of the Poppler utilities (poppler-utils package on most Linux distributions; brew install poppler on macOS). For batch pipelines, it scales linearly with no per-page rate limit.

Related ScoutMyTool tools and articles

• PDF to JPG — the primary tool.
• PDF to PNG — lossless alternative.
• JPG to PDF — reverse direction.
• Extract Pages — pull specific pages out before converting.
• Compress PDF — for when keeping the PDF is the better option.
• PDF OCR — when the image conversion is for OCR pre-processing.
• Combine PDFs and images — sister article on the reverse workflow.
• How to make a PDF searchable with OCR — sister piece on OCR.

Frequently asked questions

JPEG, PNG, or WebP — which should I pick for converting a PDF page?

JPEG for pages dominated by photos or graphics, where minor compression artefacts are acceptable for a smaller file size. PNG for pages with sharp text, line art, charts, or diagrams — the lossless compression keeps text crisp. WebP if you control the rendering environment (mostly web embeds) and want smaller file sizes than PNG; avoid for emailed attachments because older mail clients sometimes do not render it. For uncertain use, PNG is the safer default; it always renders cleanly even if the file is slightly larger than JPEG.

What DPI should I use for the conversion?

Match the DPI to the intended use. On-screen preview only: 150 DPI is enough. Standard print quality: 300 DPI is the de-facto standard for everything printed (the same DPI used by the US National Archives for digitisation guidelines). Professional print or OCR pre-processing: 600 DPI captures more detail. Archival or forensic reproduction: 1200 DPI. The trade-off is file size — every doubling of DPI quadruples the pixel count and the file size. For most users, 300 DPI is the right balance of quality and size.

Will the converted JPG be the same quality as the original PDF page?

It depends on the source. If the PDF page is text-based (exported from Word, Google Docs, or any digital authoring tool), the text in the PDF is vector — it scales perfectly to any resolution. The JPG you export will be as crisp as the DPI you pick. If the PDF page is image-based (a scan), the source is already rasterised at the scan resolution; exporting at higher DPI than the original scan does not add detail. For pages with both vector content and embedded images, the result is a hybrid — the vector portions are crisp at the export DPI, the embedded images are limited by their original resolution.

Can I convert a multi-page PDF to one JPG per page?

Yes. Most PDF-to-image converters produce a zip archive containing one JPG per page, named with the page number (page-001.jpg, page-002.jpg, etc.). ScoutMyTool's PDF to JPG tool does this; pdftoppm on the command line does the same. For a multi-page PDF you want as a single file, use multi-page TIFF instead (less common in modern workflows) or stack the JPGs into a single PDF via the JPG-to-PDF tool — but at that point you might as well have kept the original PDF.

Are my PDFs uploaded when I use a free converter?

Depends on the tool. ScoutMyTool's PDF to JPG and PDF to PNG tools run entirely in your browser tab using pdf-lib for parsing and the canvas API for rasterisation — the PDF never leaves your machine. Server-based converters (Smallpdf, iLovePDF, ILovePDF, OnlineConvert) upload your file, process it on their infrastructure, and stream the result back. For confidential documents, the client-side path is the right default; for routine "convert this manual page to a JPG for a blog post" workflows, either is fine.

What is the difference between "convert to image" and "rasterise"?

Rasterising means converting vector content (text, line art, shapes) into pixels at a specific resolution. "Convert PDF to JPG" is one form of rasterisation — the entire page becomes pixels. Other forms: rasterising just the text layer (used for accessibility-flattened outputs), rasterising for screen display only (lower DPI), rasterising for print (higher DPI). The same source PDF page produces dramatically different file sizes and quality levels depending on the rasterisation DPI; the JPG quality setting (1-100) further controls the compression trade-off.

Can I use the converted JPGs for OCR?

Yes — OCR engines accept image inputs as readily as PDF inputs. For OCR pre-processing, convert at 300 DPI minimum (600 DPI for fine print or noisy scans) using PNG format (lossless, preserves text edges) rather than JPEG. Many OCR pipelines accept JPEG but lossy compression artefacts on letter edges can reduce recognition accuracy by a few percent. For best-possible OCR accuracy, PNG at 600 DPI is the right intermediate.