URL Alchemist version history - 2 versions
URL Alchemist by Andrew Smith
URL Alchemist version history - 2 versions
Be careful with old versions! These versions are displayed for testing and reference purposes.You should always use the latest version of an add-on.
Latest version
Version 1.0.0
Released Mar 10, 2026 - 198.77 KBWorks with firefox 140.0 and later, android 142.0 and laterThe update was focused entirely on hardening and security.
- Unsafe redirect/output handling: packs can no longer transform a tab into j
avascript:, other non-web schemes, malformed absolute URLs, or file:// when
local files are disabled.
- Import hardening: .urlpack imports are now capped at 1 MB, numeric fields
are validated more strictly, failed imports clear any previously staged
pack, and the staging modal blocks imports that would reuse an installed
pack ID or fail the same regex/hotkey safety checks as the Forge.
- Regex correctness bug: $1-style capture groups now expand correctly for
NTH_OCCURRENCE, BEFORE_PATTERN, and AFTER_PATTERN, not just standard
replacements.
- Hotkey message hardening: background execution now prefers the real sender
tab URL over the message-provided URL to avoid spoofable intra-extension
input.Source code released under GNU General Public License v3.0 only
Older versions
Version 0.1.0
Released Mar 5, 2026 - 198.19 KBWorks with firefox 140.0 and later, android 142.0 and laterSource code released under GNU General Public License v3.0 only