How to Combine PNG Images Vertically into One Reference

Prepared PNG images are useful sources for screenshots, diagrams, and text panels. Arrange a short set vertically when they form a reading sequence. Image Merge can combine your image files, while the order and clarity of the content remain choices you make before saving.

Choose a useful scope

First check what the PNG files contain. A filename ending in PNG does not guarantee readable text or a useful resolution. This guide uses ordinary opaque images; it does not test transparency behavior, animated PNG, or preservation of every source-file property.

Prepare the source images

• Open every source file and check its content, dimensions, and smallest important detail. Keep originals separate from any presentation copies.
• Prepare crops in your normal editor when needed, retaining headings and diagram labels. Choose a consistent source width when it helps make a long reference predictable.
• Decide the reading order before opening the picker. Avoid selecting extra images from an earlier task or relying on alphabetical filenames as proof of final order.

Plan the image order

Use overview, main content, then final check for a short reference. The diagram is a source-preparation outline. The genuine app demonstration uses three original opaque PNG text pages and saves a Standard JPG. That distinction matters: PNG inputs do not automatically mean the output was saved as PNG.

Original source-planning diagram. The cards describe selection roles; they are not app UI, source photographs, or an app export.

Arrange the prepared images in Image Merge

1. Open Image Merge from the app home screen. If the list contains an earlier selection, save that work if needed, then use Clear List before starting this set.
2. Tap Add Image, select your prepared sources, and confirm the selection with Add in the picker.
3. Check the returned list against your intended sequence. Hold an item to change its order when needed.
4. Tap Image Merge under the source list to open the preview.
5. Open Layout and choose Vertical. Check every intended panel in the reading direction described above.
6. Tap Save, follow any prompts shown by your version, and open the saved file. The recorded example uses Standard and saves a JPG.

Choose Vertical in Layout and check the sequence before saving. This screenshot shows the Standard save setting used for the example; the surrounding black area belongs to the editor. Recorded example using original workshop pages. The planning diagram above is a separate guide to preparing your own images.

Check the saved image

Read the saved reference from top to bottom and compare each panel with the original PNG. Inspect sharp lines and any small text. Check the actual saved format rather than the format of an illustration used in an article; a PNG marketing graphic can contain a JPG app result.

Image Merge saved this example as a 1200 × 4200-pixel Standard JPG. The complete file is on the left, with detail views on the right. The workshop pages are original demo content. Recorded example using original workshop pages. The planning diagram above is a separate guide to preparing your own images.

Keep a clear master copy

Image Merge supports HD output and JPG/PNG saving. Choose PNG for a losslessly compressed master when available, and inspect the saved image at the size you need. PNG compression does not prove that earlier resizing preserved every original pixel. HD cannot restore detail missing from the sources. The illustrated app result is Standard JPG; HD/UHD appeared as Pro options in the tested build. Availability and prompts depend on your version and access.

Practical tips

Image Merge supports JPG and PNG saving. Choose PNG for a losslessly compressed master when available, then inspect the result at the required viewing size. HD output is supported, with HD/UHD shown as Pro options in the tested build. This guide uses the verified arrangement steps and leaves version-specific format selection to the controls you actually see.

FAQ

Does a PNG input force PNG output?

The source format and output format are separate. The real demonstration uses PNG source pages but a Standard JPG export.

Will a transparent PNG stay transparent?

Transparency export is not demonstrated in this guide. Check your own source and saved file rather than relying on a transparency promise here.

Try a small set first

Combine a small set of opaque PNG references and verify the format of the saved file.

Get Image Merge on Google Play and use your prepared images to try the workflow.