# Clipboard URL Normalizer

> Normalizes URLs copied to clipboard: decodes percent-encoded characters and re-encodes spaces as %20.

Canonical page: [https://chrome-stats.com/d/clipboard-url-normalizer](https://chrome-stats.com/d/clipboard-url-normalizer)

## Overview

- **ID:** `clipboard-url-normalizer`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Jefik
- **Category:** web-development
- **Daily users:** 1
- **Weekly downloads:** 1
- **Version:** 1.1
- **Last updated:** 2026-03-27
- **First published:** 2026-03-24
- **Size:** 8.77 KB
- **Data as of:** 2026-09-07
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/clipboard-url-normalizer/)
- **Website:** [https://github.com/Jefik37/clipboard-url-normalizer](https://github.com/Jefik37/clipboard-url-normalizer)

## Description

Firefox's browser.urlbar.decodeURLsOnCopy setting forces a choice: keep spaces as %20 but also percent-encode non-ASCII characters like kanji and accented letters, or decode everything and get literal spaces in copied URLs. There's no built-in middle ground.
This extension fills that gap. It monitors the clipboard in the background and normalizes any copied URL, regardless of your Firefox setting:

If the URL has percent-encoded sequences (%XX), it decodes them first — preserving structural characters like %2F, %23, and %3F
Then re-encodes any spaces as %20

The result is always a clean URL with readable non-ASCII characters and properly encoded spaces.

## Rankings

- #109,891 — Overall
- #125 — clipboard

## Permissions and access

### Permissions

- `clipboardRead`
- `clipboardWrite`

## Safety

- **Risk impact:** Low risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- Allows reading and modifying clipboard content, which can be sensitive, posing a moderate privacy risk.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

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Source: [Chrome-Stats](https://chrome-stats.com/d/clipboard-url-normalizer)