# Error 404 Wayback Machine

> Checks every 404 pages. If an archive exists in archive.org, a banner is displayed to open this archive.

Canonical page: [https://chrome-stats.com/d/error-404-wayback-machine](https://chrome-stats.com/d/error-404-wayback-machine)

## Overview

- **ID:** `error-404-wayback-machine`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Didier Lafleur
- **Category:** search-tools,photos-music-videos
- **Daily users:** 180
- **Weekly downloads:** 2
- **Rating:** 4.17 / 5 (12 ratings)
- **Version:** 1.3resigned1
- **Last updated:** 2024-04-25
- **First published:** 2017-01-22
- **Size:** 268 KB
- **Data as of:** 2026-09-25
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/error-404-wayback-machine/)

## Description

Error 404 Wayback Machine is a handy Chrome extension designed to enhance your browsing experience by detecting common error codes such as 404, 408, 410, 451, and various server errors (500-series). When you encounter these errors, the extension automatically checks if archived versions of the requested pages are available on archive.org. If an archived version exists, it displays a convenient banner allowing you to access the historical page easily, saving you time and frustration.

This tool is particularly useful for researchers, students, or anyone frequently encountering dead or unavailable webpages. For instance, testing the extension with a known dead link—like a missing page from the White House website—demonstrates how effortlessly you can retrieve archived content without manual searching. Enhance your web navigation with Error 404 Wayback Machine and never miss important information due to broken links again.

## Rankings

- #8,836 — Overall
- #4 — error
- #7 — machine
- #34 — exist
- #35 — cmd+m (mac)
- #36 — opportunity

## Permissions and access

### Permissions

- `webRequest`
- `webRequestBlocking`
- `http://*/*`
- `https://*/*`
- `<all_urls>`

## Safety

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

### Analysis details

- Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- 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/error-404-wayback-machine)