Merge Images

Putting two pictures side by side is the most common merge use case — for before/after comparisons, product shots, or sharing two moments in one image. Here is how to do it:

1. Upload both images — drag them onto the upload area. Order matters: the left image goes first.
2. Select Horizontal layout — this places images next to each other left-to-right in a single row.
3. Download — click Merge & Download to save the combined image as JPG, PNG, or WebP.

If your two photos have different heights, the tool automatically scales both to the same height so they align cleanly. You can also add a gap using the Spacing control — useful for a visible white or black dividing line between the two images.

Need to put more than two pictures together? Upload all of them and drag thumbnails to set the sequence. For four or more images, try Grid mode — it arranges them automatically in balanced rows and columns.

Image stitching means joining multiple images together — usually vertically — to form one long continuous image. The most common real-world use cases:

• Screenshot stitching: Take 3–5 screenshots scrolling through a webpage or chat conversation. Stitch them top-to-bottom into one tall image so the recipient can read everything without receiving multiple files.
• Step-by-step instruction strips: Each step in a tutorial is one photo; stacking them vertically creates a readable how-to strip for social media or documentation.
• Product detail strips: E-commerce sellers combine multiple angle shots into a single tall image for platforms that favor one-image previews.
• Panorama assembly: Joining overlapping landscape photos left-to-right (manual method without auto-blending).

To stitch images vertically: upload all images, select Vertical layout, set spacing to 0 for seamless join, then download. Images are automatically scaled to the same width.

Searching 'merge images online free' returns PineTools, Canva, Adobe Express, and merge.imageonline.co as the top results. Here is how they actually compare:

The key differentiator vs PineTools (current #1 ranked tool): PineTools only supports combining exactly 2 images at a time. BulkPicTools handles unlimited images with no per-operation cap.

Two of the top searches around image merging are 'merge images into one' and 'merge images into PDF' — they produce very different outputs.

Use this tool when your goal is one single image file to share on social media or send in a messaging app.
Use Image to PDF when each image should become a printable page — for contracts, scanned forms, or multi-page reports.

iPhone's built-in Photos app does not have a native 'merge' or 'side by side' feature. The browser method requires no app download:

1. Open Safari on your iPhone and go to BulkPicTools.com/tools/merge-images
2. Tap the upload area and select photos from your Camera Roll — you can select multiple at once
3. Choose your layout (Side by Side, Vertical, or Grid)
4. Tap Merge & Download — the combined image saves to your Downloads folder
5. Move it to your Camera Roll via the Files app if needed

Works on any iPhone with iOS 15+ and Safari. Same steps work on Android with Chrome. No account, no app download, no watermark.

Common iPhone merge scenarios: comparing two selfies side by side • stitching multiple screenshots of a conversation • combining product photos for a listing • creating a before/after fitness photo.