PDF to Long Image
Stitch every PDF page into one tall image for phones and chats
Drag & drop files here
or browse files
About this tool
Converting a PDF into one tall image is the easiest way to read a document on a phone, share lecture slides in a chat, or forward a long contract without screenshots. This tool renders every page and stacks them vertically in order, so nothing is missed and no manual stitching is needed.
Stitching happens locally in your browser: the PDF is never uploaded, DPI is selectable from 96 to 600, and the output is JPG or PNG. Because browsers cap canvas size, very long documents are rendered at a reduced DPI so the stitch can finish - the final DPI and image dimensions are shown on the page.
Features
- The whole PDF becomes one long image - page order and count preserved
- 96 / 150 / 300 / 600 DPI options, JPG or PNG output
- Live progress with a direct download when finished
- Processed locally - no upload, no signup, no watermark
How to use
- Drop or select the PDF you want to stitch
- Pick the output format and DPI - the output mode is preset to one long image
- Click Convert and wait while pages are rendered and stacked
- Preview the long image, download it, and check the final size and DPI on the page
Frequently asked questions
- Will the long image look blurry?
- Sharpness depends on DPI: 96 DPI is fine for phone screens, 150 DPI suits everyday printing, and 300 DPI or more is for archival quality. Extremely high DPI is reduced automatically to fit the canvas limit, and the actual DPI used is displayed.
- The long image file is too large - what can I do?
- Lower the DPI, switch the output to JPG, and reduce the quality - for example 150 DPI with JPG at 80%. PNG is lossless but noticeably larger, so use it only when fidelity matters most.
- Are there white gaps between pages?
- Pages are stacked tightly with no extra spacing. If the original pages have different sizes, they are centred against the widest page without cropping any content.
- Is my PDF uploaded?
- No. Stitching is done by pdf.js inside your browser and the file stays in device memory, so it works offline and confidential documents never leave your device.