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Viewport Relay

Chrome extension by holynova · Productivity · Developer

A Chrome extension in Productivity · Developer with 3 users, barely installed.

Every site you visit. This extension can read and change the content of any page you open.

What the developer says, and 4 screenshots

Loading from the Chrome Web Store. Open the listing if it does not appear.

Users
3 (the store no longer states an audience; this is the last figure it published)
Rating
not rated yet
Users, last 16 days
+3
Version
1.0.2
Updated in the store
2026-08-21
Published
2026-08-03
Manifest
V3
Browser access
3 permissions, 2 site patterns

How it has moved

Users
+3 since 01.09
0-3 · 6 readings
  1. 2026-09-010
  2. 2026-09-033
  3. 2026-09-053
  4. 2026-09-083
  5. 2026-09-100
  6. 2026-09-163
Users
+3 since 01.09
0-3 · 6 readings
  1. 2026-09-010
  2. 2026-09-033
  3. 2026-09-053
  4. 2026-09-083
  5. 2026-09-100
  6. 2026-09-163

A dot marks a day the store showed a different number. Between them the line carries the last one forward: we read every listing more than once a day and record a point only when something moves. History beyond ninety days is in the app.

What it can reach

Every site you visit. This extension can read and change the content of any page you open.

  • Store data in your browser storage
  • Read your display setup system.display
  • Declares windows

The full permission history for this extension

What changed recently

Nothing has moved on this listing since we started watching it.

The publisher

holynova publishes 7 listings we track, 58 users between them.

  1. Gemini 批量生图插件 holynova · Productivity · Workflow · published 2026-08-07 15 users ★ 5.0
  2. Collection Miner holynova · Productivity · Tools · published 2026-06-21 13 users
  3. JSON Workbench holynova · Productivity · Developer · published 2026-07-05 9 users
Show 3 more from this publisher
  1. GitHub Pages Detector holynova · Productivity · Developer · published 2026-07-03 8 users
  2. Scrape to Markdown holynova · Productivity · Workflow · published 2026-08-04 8 users
  3. UI Compare holynova · Productivity · Developer · published 2026-08-12 2 users (last published figure)

Like this one

Listings the catalog judges closest in what they say they do.

  1. Mobile View Batch Tester Describes nearly the same job, smaller audience 6 users
  2. Responsive Website Testing Toolkit - Multiple Viewport Simulator Describes nearly the same job, smaller audience 6k users ★ 4.0
  3. ScreenSync — Responsive Preview Describes nearly the same job, smaller audience 50 users ★ 5.0
  4. Viewports — Multi-Device Preview Describes nearly the same job, smaller audience 4 users ★ 5.0
  5. ViewportSmith Describes nearly the same job, smaller audience 9 users

The top 5 only. The full comparison, with why each one is close, is on the alternatives page; ranking a whole neighbourhood by your own criteria is in the app.

Is this your extension?

Connect it to Ext Ops Panel and see installs, uninstalls and uninstall reasons as events arrive, not as a weekly summary.

See what the panel does

Figures come from our own daily pass over the public Chrome Web Store listing, last read on . We publish no contact details for extension developers.