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PNG, JPG, WebP and BMP - up to 30 images

Add at least two images to merge.

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Merge Images Online for Free

Use this free Merge Images Online tool to combine multiple pictures into one image without installing software. Upload PNG, JPG, JPEG, WebP or BMP files, arrange them in the exact order you need and export the result as PNG, JPG or WebP.

The image merger includes vertical, horizontal and grid layouts, plus live preview, rotation, resizing, spacing, padding, alignment, background and output-quality controls. It is useful for joining screenshots, creating comparisons, combining document scans, building photo grids and making simple collages.

Flexible layoutsMerge pictures from top to bottom, join images side by side or create a balanced grid.
Multiple formatsImport PNG, JPG, WebP and BMP, then download the combined image as PNG, JPG or WebP.
Private processingYour images are combined locally in the browser and are not uploaded by this tool.

How to Merge Multiple Images Into One

  1. Choose or drag at least two PNG, JPG, WebP or BMP images into the upload area.
  2. Select Vertical, Horizontal or Grid as the merge direction.
  3. Drag image rows or use the Up and Down buttons to arrange the final order.
  4. Rotate any image and choose whether to keep original sizes or match the largest or smallest image.
  5. Adjust alignment, space between images and outer padding.
  6. Choose a transparent, white, black or custom background.
  7. Select PNG, JPG or WebP as the output format and choose the output scale.
  8. Press the Merge & Download button to save the final image.

Choose the Best Image Merge Layout

Merge images vertically

Vertical mode stacks pictures from top to bottom. It is a practical choice for long screenshots, web page captures, document pages, tutorials, receipts and comic panels. Start, center and end alignment help when source images have different widths.

Combine images side by side

Horizontal mode joins pictures from left to right. Use it to make before-and-after comparisons, product comparisons, banners, timelines or photo strips. The Match Largest and Match Smallest settings normalize image heights while preserving aspect ratios.

Create an image grid

Grid mode arranges pictures into rows and columns. Choose two to five columns or let Auto calculate a balanced grid. Spacing and outer padding make it easy to create a clean photo collage without a separate editor.

PNG, JPG or WebP: Which Output Format Should You Choose?

  • PNG: best for screenshots, text, graphics, logos and images that need a transparent background. PNG export is lossless, so quality control is not required.
  • JPG: a strong choice for photographs and smaller shareable files. JPG does not support transparency, so transparent areas use a white background when Transparent is selected.
  • WebP: useful when you want modern compression, good visual quality and optional transparency in compatible browsers.
Transparency tip: Choose PNG or WebP with the Transparent background option to preserve empty areas. JPG output always needs a solid background.

Advanced Online Image Merger Features

  • Upload and combine up to 30 images in one session.
  • Mix PNG, JPG, JPEG, WebP and BMP source files.
  • Reorder images with drag and drop or mobile-friendly Up and Down buttons.
  • Rotate individual pictures in 90-degree steps before merging.
  • Keep original dimensions or match images to the largest or smallest size.
  • Add up to 200 pixels of spacing and 300 pixels of outer padding.
  • Use transparent, white, black or a custom background color.
  • Preview exact output dimensions before downloading.
  • Export at original, 2x or 3x scale within safe browser canvas limits.
  • Control JPG and WebP compression quality to balance clarity and file size.

Merge Images Without Uploading Them

The merging process runs inside your browser. Selected files are decoded, arranged and exported on your device. This local workflow is faster for many everyday jobs and keeps personal photos, screenshots and scanned documents from being sent to this tool's server.

Large source images can create a very large canvas. When the selected 2x or 3x scale would exceed common browser limits, the tool automatically reduces the scale while preserving the complete layout.

Frequently Asked Questions

How can I merge images online?

Upload at least two images, select a layout, arrange their order, choose an output format and press the download button.

Can I combine PNG and JPG files together?

Yes. You can mix PNG, JPG, WebP and BMP source files in the same merged image.

Can I merge images side by side?

Yes. Choose Horizontal to combine every image from left to right with optional spacing and alignment.

How do I stack images vertically?

Choose Vertical mode. The images will be placed from top to bottom in the order shown in the image list.

Can the merged image have a transparent background?

Yes. Choose Transparent and export as PNG or WebP. JPG output uses a solid background because JPG does not support transparency.

Which output format is best?

Use PNG for lossless graphics and transparency, JPG for photographs and smaller files, or WebP for modern compression.

Are my images uploaded to a server?

No. This tool processes and merges the selected images locally in your browser.

Does the image merger work on mobile?

Yes. The responsive controls use a two-column mobile layout, and image order can be changed with buttons instead of drag and drop.