How to Merge Images Vertically for One Long Screenshot
Learn how to merge images vertically into one long screenshot for chats, receipts, tutorials, and documents while keeping the correct order.
Long screenshots are easier to share than a collection of separate files. They are useful for chat histories, receipts, app walkthroughs, web pages, recipes, and multi-step instructions. A vertical merger places each image below the previous one and creates one continuous canvas. The result can be read from top to bottom without opening several attachments.
Why vertical stitching works
Vertical stitching follows the way people naturally read a document. The first screenshot introduces the context, and every following screenshot continues it. This is valuable for a conversation where messages appear in order, or for an app tutorial where each screen represents the next action. A vertical image also works well in a document or a social post that supports tall media.
A vertical layout is different from simply putting images in a grid. A grid makes the viewer jump from one cell to another. A long canvas preserves sequence. Choose vertical stitching when order and continuity are more important than fitting every image into a compact shape.
How to stack screenshots vertically
- Open the vertical image merger.
- Select screenshots in the order they should appear.
- Choose a top-to-bottom or vertical arrangement.
- Add a small gap and a background color if sections need separation.
- Review the complete preview before downloading.
The upload order is part of the story. Rename files with a number before uploading if your operating system sorts them unpredictably. For example, 01-intro.png, 02-settings.png, and 03-result.png make the intended sequence obvious. When the screenshots come from a conversation, check that the oldest message appears first.
Prepare screenshots before merging
Remove unrelated browser chrome, notification banners, and empty margins before stitching. A reader should see the useful content immediately. If every screenshot has a different width, decide whether to preserve its original size or place it inside a shared width. Preserving size avoids distortion, while a shared width creates a more uniform document.
| Source | Good preparation |
|---|---|
| Chat screenshots | Crop notifications and private status bars |
| Receipts | Keep the store name and total visible |
| App tutorials | Keep controls and step numbers visible |
| Web pages | Remove browser tabs and unrelated sidebars |
Avoid cropping a message in the middle of a sentence. It is better to leave a little extra space than to remove context. For sensitive documents, inspect the full canvas after merging and confirm that no private detail was accidentally included.
Spacing, background, and quality
A small gap helps readers distinguish where one screenshot ends and another begins. White works for printed documents, while a light gray background can separate white app screens. Use a darker background only when the screenshots have transparent edges or when the final graphic needs strong contrast. Keep the gap consistent from top to bottom.
Use original screenshots whenever possible. Repeated JPEG compression can make small text blurry. PNG is usually the best output for interfaces and receipts because it preserves sharp edges. Do not take a screenshot of the browser preview after the merge; download the generated file directly so the output canvas keeps its intended dimensions.
- Number or order the source files
- Remove unrelated UI elements
- Check the first and last screenshot
- Do not publish private information by mistake
Make a long image easier to read
If the resulting image is extremely tall, consider splitting it into logical chapters. A chat history might be divided by date. A tutorial might use one image per major task. You can still merge each chapter vertically and link the chapters from a page. This is often easier to read than one image several thousand pixels tall.
Add a short title above the image when publishing it on a website. Explain what the reader will see and include descriptive alt text. Search engines cannot understand every visual detail from pixels alone, so surrounding text gives the image context. If you add labels, use the add text to image tool after creating the base image.
Troubleshooting
If the output looks out of order, clear the upload area and add the files again in a numbered sequence. If a screenshot appears stretched, use a layout that preserves its aspect ratio or crop the extra margin first. If text looks too small, do not reduce the entire long image to a tiny width; publish it at a readable size or provide the original files as an additional resource.
For a clean result, combine screenshots into one long image and download it directly from the browser.
A repeatable workflow for teams
If several people create long screenshots, agree on a simple naming and review process. Ask the person preparing the files to number them, remove personal information, and confirm the intended width. Another person can review the completed canvas from top to bottom before it is published. This small check prevents a missing screenshot or an accidental reversal from confusing readers.
For a knowledge base, save the source screenshots in a folder next to the final image. The combined image is convenient for readers, while the source files make future corrections possible. Add a date or version in the surrounding page text when the interface may change. A clear workflow keeps the visual guide accurate long after the first export.