Ship a UI fix with visual proof.

File the bug and let the agent show its work. With visual previews on, the pull request opens with a capture of the fixed screen, and every follow-up commit brings a fresh one.

Describe
Run isolated
Review in GitHub

Feature overview

You start with
A UI bug in a repository with visual previews on
You use
Visual previews · PR comments · /fix
Takes
One issue; the capture arrives with the PR
Real run
propr #2952

Turn on previews for the repository

Switch on Visual previews in the repository settings, pick images, video or both, and write the capture instructions: for a checkout bug, the checkout page at desktop and phone widths. Setup lives in the visual previews docs.

Visual previews switched on for storefront-web: images and videos, the detected GitHub attachment limits, and capture instructions
Previews on for the repository, with the capture instructions the agent reads.

File the bug

Describe what looks wrong and where, as you would for a teammate. Start it as a New Task, or add ProPR's trigger label to a GitHub issue.

@maintaineropened an issue

Checkout total wraps under the Pay button on phones

At 390 px the order total drops to a second line and the Pay button covers it. Keep the total on one line.

Read the PR from the top

The agent fixes the layout and captures the result with the project's own tooling, and ProPR opens the pull request with a Visual preview section in the description. Compare the capture with the bug report, then read the diff with the result already in mind. On public propr #2952, that section holds the before/after of the fixed sidebar and the agent's note.

Ask for a change, get a new capture

Comment on the PR, or run /fix on a /review's findings. The completion comment for that commit carries its own captures, focused on what changed.

@maintainercommented on this pull request

Fixed on phones. At 768 px the Pay button now sits too far from the total; align them on one row.

@propr-dev[bot]example response

✅ Applied the requested follow-up changes in commit a1b2c3d

Visual preview: Checkout footer at 768 px, total and Pay button on one row.

A real follow-up, with its picture.

On public propr #2874, a PR comment asked Claude Opus 5.5 for one more change. The completion comment for commit 118c55b ends with a capture of the New automation form after the change, so the reviewer sees the result before opening the diff.

Public ProPR pull request 2874 on GitHub, merged: the top of its description, then the propr-dev completion comment Applied the requested follow-up changes in commit 118c55b, its Summary of Changes, and a Visual preview section with a capture of the New automation form saving through a single Save button.
A follow-up completion comment with its own visual preview on public propr #2874, shortened to the relevant parts.

What you get

A pull request that opens with a picture of the fix, a fresh capture with every follow-up commit, and the code review in the same thread.

Visual previews → All playbooks