About this tool
Image merge arranges uploads in list order, with per-image rotation or flipping, and outputs a PDF or combined image. Mixed dimensions and orientation require scaling and padding on the output canvas, and text clarity depends on final pixels and page size.
It packages scanned pages, screenshots, and photographs for sharing. Transparency, EXIF orientation, and detailed color can change when images are redrawn, so preview every page for background, direction, metadata, and color.
How to use it
Add and organize images
Place them in reading order and correct rotation or mirroring individually.
Choose output type
Use PDF for multipage material or an image output for one continuous composition.
Preview and download
Check sequence, scaling, padding, transparent background, and small-text clarity.
Supported range and limits
- Two outputs
- One tall PNG strip, or a PDF with one image per page
- Ordering
- List order; never sorted by filename
- Mismatched widths
- The strip aligns to the widest image, leaving margins beside narrower ones; normalise sizes first to avoid it
- Input formats
- JPG, PNG, WebP, GIF, BMP; anything the browser can decode
- Strip file size
- PNG is lossless, so a dozen stacked screenshots can reach tens of megabytes
- Size limit
- Every image is held in memory at once, so very many or very large images can fail
When you would use it
Turning scans into a PDF
Arrange receipts, handwritten notes, or evidence photos by page number.
Creating a continuous long image
Join procedural screenshots for workflow documentation or issue reporting.
Stitching a scrolling screenshot together
Several screens captured from a page or chat log stack into one tall image that can be viewed and shared in one go.
What to know before you start
- A low-resolution source remains hard to read after merging.
- Camera images may contain location metadata, so review privacy requirements around output.
- Many high-resolution images consume substantial browser memory and should be processed in batches.
Related concepts
- canvas
- The pixel surface used to draw multiple images into one output.
- page order
- The final sequence of images in a PDF or long composition.