PDF to Long Image Converter

What is a "long image" and why would I want one?

A long image is a single tall picture that combines multiple pages vertically. Instead of a PDF with 10 separate pages, you get one image where page 1 is at the top, page 2 below it, page 3 below that, and so on.

Common uses:

• Social media: Share entire documents on Instagram, Twitter, or Facebook as a single scrollable image
• Mobile viewing: Easier to scroll through on phones than navigating a PDF
• Screenshots: Capture an entire document at once for presentations or records
• Web embedding: Simpler to display on websites than PDF viewers

How to use this tool

1. Upload your PDF: Drag and drop or click to select a PDF file.
2. Choose output format: PNG for best quality or JPEG for smaller files.
3. Set width: The output image width in pixels. Default 1,200px works well for most uses. Larger = better quality but bigger file.
4. Adjust spacing: Set the gap between pages (in pixels). Use 0 for no gap, or 20-50 for clear separation.
5. Pick background color: The color shown in the gaps between pages. White is standard.
6. Select page range (optional): Enter "1-5" for pages 1 through 5, "2,4,6" for specific pages, or leave blank for all pages.
7. Convert: Click the button and wait while your PDF is processed.
8. Download: Preview the result and download your image(s).

What if my image is too long?

Browsers have limits on how tall a single image can be (typically around 32,000-65,000 pixels depending on the browser). If your PDF would create an image taller than this limit, the tool will automatically split it into multiple parts (part-1, part-2, etc.) and let you download each one.

For example, if you have a 50-page PDF and each page is 1,500 pixels tall, the result would be 75,000 pixels tall, so it gets split into two images.

PNG vs JPEG: Which should I choose?

• PNG: Lossless format, best for documents with text, sharp lines, or graphics. Larger file size. Best for quality.
• JPEG: Lossy compression, smaller files. Good for documents with photos or where file size matters more than perfect sharpness. Slight quality loss on text.

Recommendation: Use PNG for text-heavy documents, JPEG if the file size is too large or the document has lots of photos.

What width should I use?

It depends on your use case:

• Social media (Instagram, Twitter): 1,080 to 1,200 pixels wide
• Mobile viewing: 800 to 1,200 pixels
• High-quality archival: 2,000 to 3,000 pixels (larger file, slower processing)
• Quick sharing/small file: 600 to 800 pixels

Taller output requires more memory. If conversion fails on a large PDF, try reducing the width.

Can I convert just part of a PDF?

Yes! Use the page range option:

• "1-5" converts pages 1 through 5
• "2,5,7" converts only pages 2, 5, and 7
• "1-3,8-10" converts pages 1-3 and 8-10
• Leave blank to convert all pages

Is there a file size limit?

No hard limit, but performance depends on your device. Very large PDFs (over 100 pages or 100 MB) may be slow or fail on older devices due to memory constraints. If you run into issues:

• Reduce the output width
• Convert in batches using the page range feature
• Use JPEG instead of PNG

Does this work on phones and tablets?

Yes! This tool works on iPhone, iPad, Android phones, and tablets. Touch the upload area to select a PDF from your device. Note that large PDFs may be slower on mobile devices, and you might need to reduce the width setting for better performance.

Is my file private?

Absolutely. Your PDF is processed entirely in your web browser using JavaScript. The file never leaves your device—nothing is uploaded to a server. You can verify this by disconnecting from the internet after the page loads; the tool will still work. See our Privacy Policy for more information.

What about password-protected PDFs?

This tool cannot open password-protected or encrypted PDFs. You'll need to remove the password first using a PDF editor or the tool that created it.