How to Combine Multiple Photos Side-by-Side or Vertically into One Image

What Is Side-by-Side Image Stitching?

Image stitching means combining two or more separate photos into one single image file, arranged horizontally side-by-side, stacked vertically, or in a grid, with consistent borders and spacing between them. Most ID verification and application forms that request 'front and back of your ID' genuinely mean one combined image showing both sides, even though the upload field itself is just a standard single-file uploader with no indication of that beyond the label text. EditPDFKit's Merge Images tool produces exactly that single combined file without needing a full graphic design program.

Common Use Cases

Job seekers uploading 2-sided ID proofs are the most common case, stacking the front and back of a driver's license or national ID into one file for a form that only accepts a single upload. Fitness coaches making before/after pictures need a clean side-by-side comparison without fiddling with layers in a photo editor, while real estate agents creating photo collages and crafters combining reference images both need a quick way to place multiple pictures into one coherent layout.

In every case, the task is the same small but genuinely annoying problem: joining separate images into one file without opening a full design application.

Key Features That Make This Easy

Side-by-Side & Vertical Stitching covers both common layouts — horizontal for before/after comparisons, vertical for a 2-sided ID card — and the ID Proof Combiner use case specifically is built around exactly this kind of national ID or driver's license submission. Custom Borders & Spacing let you adjust margins, padding, and background color (white, black, or transparent) to match whatever the final destination expects.

Auto-Height Alignment automatically normalizes photo dimensions so both images align symmetrically, since two photos taken moments apart rarely come out at identical pixel dimensions on their own.

Why It's Simple to Use

The process is four steps: add your photos, choose horizontal or vertical layout, fine-tune the border and gap, then save. No account or software install is needed, and because the stitching happens entirely through your browser's own canvas rendering, sensitive documents like ID cards and licenses never have to pass through a third-party server just to get combined into one file.