Why You Need Stitching
A phone screenshot rarely fits a whole chat log. Long articles need to be split across multiple screenshots. The same scene can produce seven or eight separate photos. These fragments are awkward to forward or archive. Stitching them into a single image is the most direct way to tidy them up.
Image to PDF's Stitch Images feature offers three modes, each with its own scenario.
Vertical: The Standard for Chat Logs and Long Articles
Images stack top to bottom into one tall image. This is the most common mode:
- Chat logs: Screenshot each screen in time order, stitch vertically into a complete conversation record. Easy to use as evidence, archive, or forward.
- Long articles / web pages: Screenshot in sections, then stitch into a full page with the reading order preserved.
- Multi-page document photos: Arrange in page order from top to bottom so you can read everything at a glance.
Stitching preserves the original aspect ratio and packs the images tightly together, so text doesn't get warped by the join.
Horizontal: Side-by-Side Comparison
Images line up left to right in a single image. This fits scenarios where you need to "see things together":
- Two solution screenshots side by side — differences are obvious at a glance.
- Before and after interface views — easy to confirm what changed.
- Wide content (like landscape tables) captured in segments and joined back horizontally.
Grid: Photo Collections
Images arrange into a grid for an overview layout. This is great for a set of similarly sized photos that you want to preview: multiple shots of the same scene, a pack of stickers, different angles of a product. It's easier than flipping through them one by one, and it works better than a long image when you want to share in social contexts.
A Few Tips Before You Stitch
- Order defines reading order. Drag images into the right order before stitching. Especially with chat logs, the wrong order changes the meaning.
- Preview before you export. Check the layout matches what you expect before generating, so you don't have to redo it.
- It's all local. The whole stitch runs locally on your device, so your screenshots are not uploaded to a server — chat logs often involve private content, so this matters.
After exporting, if you want the stitched image in a PDF archive, chain it with the Image to PDF feature and the whole package is done in one pipeline.