PDF to Long Image

Convert PDF to One Long Image Free — All Pages in a Single PNG or JPG

This tool stitches all pages of a PDF into one tall vertical image using PDF.js canvas rendering, entirely in your browser. Choose a resolution, pick PNG or JPG, set an optional gap between pages, and download the combined image in seconds. No file is uploaded and no account is needed.

How to Convert a PDF to a Long Image

Drop your PDF into the upload area. The tool reads the page count and shows the file name. Set the resolution using the slider or the preset buttons: 72, 150, or 300 DPI. Enter a gap in pixels if you want space between pages, or set it to 0 for a seamless stack. Choose PNG or JPG as the output format. Click Convert to long image. Each page renders in sequence and the tool stitches them into one canvas before downloading the result.

Pages with different widths are centered horizontally on the combined canvas. The final image width matches the widest page in the document.

PNG or JPG: Which Output Format Should You Choose?

PNG uses lossless compression. Every pixel is preserved exactly, which makes it ideal for documents with text, charts, and sharp-edged graphics. The file is larger, but there is no quality loss. JPG uses lossy compression and produces smaller files. It works well for photo-heavy PDFs or when you need to share the image quickly and file size matters more than perfect sharpness.

• PNG: lossless, larger file, sharp text and lines. Best for documents, reports, and presentations.
• JPG: compressed, smaller file, slight quality reduction. Best for photo-heavy PDFs or web sharing.
• 72 DPI: screen resolution, smallest file. Good for quick web previews.
• 150 DPI: standard quality for sharing and general use.
• 300 DPI: archive quality, large file. Best for preserving document fidelity.

What Are the Best Use Cases for a Long Image?

Long images solve a specific problem: sharing a multi-page document on platforms that don't support PDF previews. Many messaging apps, including WhatsApp and Telegram, show images inline but require a separate step to open a PDF. A long image shares the full document as a scrollable visual without any extra steps for the recipient.

Website embeds are another common use. A blog post or landing page can embed the entire document as a single image tag without needing a PDF viewer plugin. This works in any browser without configuration. Long images are also used for single-image archiving of receipts, certificates, or contracts that need to be stored as a flat image rather than a PDF.

Long Image vs. PDF to Individual Images: What Is the Difference?

This tool produces one single image file containing all pages stacked vertically. That's useful when you want one file to share or embed. The PDF to Images tool produces a separate image for each page, packaged in a ZIP file. Use that tool when you need each page as an independent image, for example to use individual pages in a presentation or to upload them separately to a content management system.

What About File Size at High Resolutions?

File size grows quickly at higher DPI settings with multi-page documents. A 20-page A4 PDF at 72 DPI produces a PNG around 5-15 MB depending on content density. At 300 DPI, the same document can produce a PNG exceeding 100 MB. Very large images may slow down or crash some browsers due to canvas memory limits. For documents longer than 10 pages, start with 72 or 150 DPI and only use 300 DPI if you genuinely need archive-quality output. Use JPG instead of PNG to reduce file size when text sharpness is less critical.