NewTab PowerTools 作成者: Markus Perdrizat

新しいタブページをカスタマイズします。新しいタブページのタイル追加や Firefox スタートページのランチャーを表示したり、背景画像を追加することができます。また、新しいタイル画像やタイトルを設定することができます。

この拡張機能について

NewTab PowerTools replaces Firefox's built-in new tab page with one designed for the sites you actually visit and the layout you actually want. Think of it as PowerToys for your browser — extra controls and visual cues the default doesn't expose.

What's different from Firefox's default

Tiles you can actually see. Firefox's shortcuts stay small no matter how few you choose. NewTab PowerTools lets you pick a fixed grid — 2 × 3, 4 × 6, whatever fits — and tiles scale to fill the viewport.
Tiles that look like the sites they link to. The extension auto-captures a thumbnail of each top site the way it actually appeared the last time you visited. Firefox's native shortcuts only accept manual image uploads.
Pixel-level layout control. Pick exact rows and columns, lock a tile aspect ratio (16:9, 4:3, 1:1, 3:4 portrait, or fill viewport), tune opacity, title size, page margins, and grid spacing.
Per-domain filter cap. Cap how many tiles a single host takes — including subdomain wildcards like .example.com. Firefox enforces a hard one-tile-per-domain rule and doesn't expose this.
Per-tile background color. Native supports a custom image per tile, but not a custom solid color.
Recently-closed-tabs row. A dedicated horizontal row of recently closed tabs sits below the grid for one-click restore.
Backup and restore. Export your tiles, thumbnails, and settings to a single backup file. No Firefox Sync required.

Privacy

All your data — tiles, thumbnails, settings — stays on your device in your browser's local storage. The extension has one outbound connection: to the Mozilla wallpapers service for the curated wallpaper catalog. No telemetry, no analytics, no third-party endpoints. Full privacy policy: PRIVACY.md.

About

NewTab PowerTools is a continuation fork of Geoff Lankow's New Tab Tools, which the original maintainer placed in read-only mode in 2022. The codebase, the original feature set, and most of what makes the extension worth continuing are Geoff's — this fork carries forward the maintenance, security hardening, and the v2 UI redesign. License (MPL-2.0) explicitly permits the continuation.

Source code, issues, and roadmap: github.com/perdrizat/newtabtools

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権限とデータ

必要な権限:

最近閉じられたタブへのアクセス
ブラウザーのタブへのアクセス
ブラウジング履歴へアクセス
ナビゲーション中のブラウザーアクティビティへのアクセス
すべてのウェブサイトの保存されたデータへのアクセス

任意の許可設定:

ブックマークの読み取りと変更
ファイルのダウンロードおよびブラウザーのダウンロード履歴の読み取りと変更
ブラウジング履歴へアクセス

データ収集:

開発者によると、この拡張機能はデータ収集を必要としません。