ComparePictureCompare two pictures

Compare photos side by side

Put two photos next to each other and zoom into the same spot on both at once — the cursor marks the matching point in each, and the pair can be saved as a single side-by-side picture.

Private · Browser-based · No uploads

Two pictures in, every difference out.

  1. 1. Drop, paste or choose the earlier picture as A.
  2. 2. Add the later one as B — or drop both at once.
  3. 3. The comparison starts by itself; switch views any time.

PNG, JPEG, WebP, GIF (first frame), AVIF, BMP and HEIC where this browser can decode it. Different sizes are fine — they are aligned for you.

Both files are read by this page on your device. There is no upload step, because there is no server to upload to.

Or try an example pair

ALeftChoose image Adrag & drop, or paste with Ctrl/⌘ VPress Enter to choose image A, or drop a file here.
BRightChoose image Bdrag & drop, or paste with Ctrl/⌘ VPress Enter to choose image B, or drop a file here.

Viewing side by side and making a side-by-side picture

These are two different jobs. Viewing is for you: the two panes below move together, so zooming into an eye, a logo or a line of small print on the left shows exactly the same area on the right. Unlock the panes to wander around one photo on its own; lock them again and the right pane snaps back to the left one.

Making a combined picture is for someone else — a client, a classmate, a listing. Export opens on the side-by-side template: both photos at the same height with their labels, on a light or dark background, ready to download as one PNG.

When the photos are wide, stack them

Two panoramas or two desktop screenshots side by side leave each one a thin strip. In the export, “Stack vertically” puts A above B instead, which keeps both large on a phone screen and in a document. On a narrow screen the viewing panes stack by themselves.

Photos of different sizes

A phone photo and a resized copy of it will not line up pixel for pixel. The workspace looks for where the smaller one sits inside the larger and scales it to match before showing them together, and says what it did. If you would rather see each photo exactly as it is, choose “Original px” under Size & alignment.

Questions people ask

›Can I zoom both photos at the same time?

Yes. Zoom and pan are locked together by default, so both panes always show the same area. Turn off “Lock zoom and pan together” to move one side on its own.

›How do I save the two photos as one picture?

Press Export. The side-by-side template is already chosen; set the labels and background, pick side by side or stacked, and download the PNG. It is drawn in this page.

›Should I stack wide photos?

Usually. Wide pictures placed next to each other shrink to a strip; stacking keeps each one at full width, which reads better on phones and in documents.