Add images
Choose local images or continue directly from a completed PDF to Image conversion.
Image Stitcher
Arrange images into one seamless long image or a horizontal strip, entirely in your browser.
Seamless layout
Drag to reorder
Local processing
Start with your images
Add two or more images to review the ordering and seamless composition before export.
Image order
Stitch direction
Output format
Add images to see a live preview.
Workflow
A clear order, then one image
Set the sequence
Drag images into place, or use the move controls to set a precise reading order.
Create the composition
Set the direction, dimensions, spacing and output format, then download the finished image.
Designed for continuity
The composition stays intentional
No visible gaps
Images can meet edge to edge, with spacing only when you intentionally add it.
Order stays under control
The thumbnail queue makes page order easy to inspect before creating the final image.
Built for long screenshots
Vertical composition is the natural fit for PDF pages, chats, receipts and scrolling captures.
Private by design
Image files are decoded, arranged and exported locally in your browser. Nothing is uploaded to ToolKnit.
Pro tips
Prepare a better long image
Use images with the same width for the cleanest vertical result. PDF pages already meet this condition.
Review the reading order before export. The first image becomes the top or left edge of the final composition.
For very large output, reduce Export scale before downloading to keep the browser responsive.
FAQ
Common questions
Not by default. Set Image spacing to 0 for edge-to-edge output, or add a gap and background color when you need separation.
Yes. Drag an item in the queue, or use its move controls. The preview and final export use that same order.
Choose Open in Image Stitcher from a completed PDF conversion. The exported page images arrive here in their PDF page order.
No. Image decoding, previewing and export all happen locally in your browser.