Error 404 Wayback Machine

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

Error 404 Wayback Machine Add-on

Error 404 Wayback Machine is a Firefox add-on that checks for error codes 404, 408, 410, 451, 500, 502, 503, 504, 509, 520, 521, 523, 524, 525, and 526. If archived versions of the URLs are available, it displays a banner to open the archive.
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Add-on stats

Manifest V2
Daily users: 230
3
Rating: 4.17
(12)
Version: 1.3resigned1 (Last updated: 2024-04-25)
Version code: 5727530
Creation date: 2017-01-22
Weekly download count: 1
Firefox on Android: No
Permissions:
  • webRequest
  • webRequestBlocking
  • http://*/*
  • https://*/*
  • <all_urls>
Size: 274.82K
Full description: See detailed description

Ranking

# 6,870 ▲ 23
Other rankings
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Other platforms

Not available on Chrome
Not available on Android
Not available on Edge

User reviews

by 全民三退解体中共邪教, 2025-02-25
Increasingly important, but maybe add the option to choose which response codes are used, maybe include 403 also?
by Firefox user 18796815, 2025-01-23
Use the official Internet Archive extension instead: https://addons.mozilla.org/en-US/firefox/addon/wayback-machine_new/
by Firefox user 18389199, 2024-04-26
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Add-on safety

Risk impact

Error 404 Wayback Machine requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk impact analysis details
  • Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
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Risk likelihood

We don't have sufficient data to confidently determine the risk likelihood of Error 404 Wayback Machine. Use it at your own risk.

Risk likelihood analysis details
  • High This extension has low user count. Unpopular extensions may not be stable or safe.
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