How to Use the Photo Frame Size Tool (Step-by-Step)

A practical walkthrough: upload a photo or PDF, pick frame opening sizes, style your frame and room, use multiple frames on the wall, and export a PDF—on desktop or mobile.

How to Use the Photo Frame Size Tool

The Photo Frame Size Tool helps you preview how a photo (or printable artwork) will look in a frame on a wall before you order prints or buy a frame. This guide explains every main control so you can move fast and avoid guesswork.

1. Open the tool and upload a photo or PDF

Start on the home page. In the settings panel, use the file upload to load a photo (JPG, PNG, WebP, etc.) or a PDF from your device. PDFs use the first page as a preview (rasterized in your browser—the file never leaves your device). The tool reads pixel dimensions and uses them to suggest frame sizes and show print-quality guidance (effective DPI) for the opening you choose.

Tip: You can also upload from an empty frame placeholder on the room preview (tap Choose… when nothing is loaded yet).

2. Understand the room preview (center of the screen)

The large area shows a scaled room background with your frame(s) hanging on the wall. The small label in the corner explains the on-screen scale (for example, how many pixels represent one inch in that preview).

This preview is for visual comparison—it helps you feel whether a size looks right in the room, not to replace a tape measure on your actual wall.

3. Choose the “frame opening” (print size)

At the bottom of the preview, open the Frame opening panel (you can minimize it to a pill if you need more canvas space).

Suggested sizes: After you upload, chips are ranked for your photo and your wall width. The best match is highlighted.
Custom opening: Enter width and height in inches, then Apply, if you already know the mat opening or print size you want.
Portrait / landscape: Set this in the settings panel if you want the opening rotated relative to your photo.

4. Adjust wall size and room look (settings panel)

In the sidebar, set wall width and height (in inches) so recommendations stay realistic for your space. Pick a room background or upload your own, and choose a wall texture / color so the preview matches your taste.

On narrow screens, tap Settings to open the same controls in a sheet.

5. Style the frame and mat

Use the settings panel to change frame style, frame rail width, and mat width. Optionally set custom hex colors for the frame or wall tint. These updates apply to the active frame (see below).

6. Multiple frames on the wall

You can add more than one frame to the preview. Use Add in the frame-opening strip (or the matching control in settings) to duplicate a new frame. Del removes the active frame when more than one exists.

Tap a frame on the wall to make it active—the sidebar then edits that frame’s photo, size, and style.
Drag a frame to reposition it on the wall.

7. Canvas zoom (not your print size)

In the frame-opening panel, Zoom only changes how large the room preview appears on your screen. It does not change your print dimensions or DPI. Tap the percentage to reset to 100% if you want the default view back.

8. Move the settings panel (desktop)

On larger screens you can drag the panel dock between the left and right side of the window, and collapse the sidebar to give the canvas more room.

9. Export a PDF

In the Settings panel header, tap or click PDF to download a document with a room snapshot (when your browser allows image capture) plus a written summary: opening size, frame style, wall dimensions, crop notes, and related specs.

10. What this tool doesn’t decide for you

It doesn’t ship prints or frames—you still order from your lab or retailer.
Always double-check ruler measurements on-site for final hanging placement.