PDF to Long Image: Stitch Cropped Pages into PNG

Crop the top and bottom of each PDF page, then stitch them into one vertical PNG—handy for long-form reading and social posts.

PDF to Long Image tool

Features

  • Runs locally with pdf.js—nothing is uploaded.
  • Vertical crop only (n / s handles); sync one crop to all pages when needed.
  • Toolbar Preview and Download share the same stitch logic; open the site-wide preview to inspect.
  • Restore crops or Reset to return to upload.
  • Max 100MB per PDF; encrypted PDFs are blocked at upload.

How to Use

  1. Open PDF to Long Image.
  2. Upload a PDF (≤100MB) to enter the desk.
  3. Drag top/bottom crop handles; switch to “all pages” to sync.
  4. Click Preview or Download for {basename}_long.png.
  5. Use Restore crops or Reset as needed.

Notes

  • Stitch results over 32000px on either axis are rejected—fewer pages or more crop helps.
  • Output is PNG only; pages are stacked in order.
  • Runs locally in the browser.

Related Keywords

PDF to long image, pdf long image, vertical stitch, pdf2longimg, Sanye Hub, PNG

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