Select an API name on any page, right-click, and look it up on DevDocs in a small window. One permission, no host access.
Users
5
−2 in 30 days
Rating
0.0 / 5
unchanged in 30 days
Ratings
0
0 in 30 days
Store rank
#248K
#208K among extensions
Version
1.0.0
updated 13 Aug 2026
Users
monthly, 2 months
Latest, 16 Oct 2026:5 usersMove the mouse over the chart for any month
Ratings count
monthly, 2 months
Latest, 16 Oct 2026:0 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About Docs Lookup for DevDocs
Stop switching tabs to look up an API.
Select a class, method, or property name on any page, right-click, and choose
"Search DevDocs for ...". The entry opens in a small window next to what you were
reading. Your original tab is never touched, never navigated away from, never
scrolled.
WHAT IT DOES
- Adds exactly one item to the right-click menu, and only when text is selected.
- Opens the DevDocs entry in a compact window beside your work.
- Right-click a different word and the same window switches to it instead of
piling up new windows.
- Works on every page, including ones where extensions are not allowed to run.
IT USES YOUR OWN DEVDOCS SETUP
The window loads devdocs.io as a normal top-level page, which means your own
DevDocs configuration is fully in effect: the documentation sets you enabled,
your theme, and your downloaded offline data. Searches are scoped to the docs you
actually use and stay instant offline.
This is deliberate. Extensions that render DevDocs inside their own popup or
frame cannot see your DevDocs preferences at all, because DevDocs stores every
preference in a same-site cookie. They fall back to a default document set. This
one does not have that problem.
We also do NOT hard-code a language filter: DevDocs ships nine separate Python
sets alone (3.6-3.14), so any hard-coded choice would silently return unrelated
results for most users. Your enabled sets are the filter.
WHY IT IS SAFE
- One permission: contextMenus. That is the whole list.
- It cannot read any web page. There is no host permission, no activeTab, no
content script and no scripting permission. The only thing it ever receives is
the text you highlighted, handed to it by Chrome along with the menu click.
- Your selected text does not leave the browser. It goes into the URL fragment
(#q=...), and browsers never send fragments to servers.
- No analytics, no tracking, no accounts, no network requests of our own, no
storage.
COMPLEMENTS, NOT REPLACES
If you already use a popup-based DevDocs extension for "I want to look something
up right now", this one covers the other case: "I just ran into a word I do not
recognise while reading." They do not overlap, and installing both is fine.
Open source (MIT): https://github.com/sserpolar/devdocs-lookup
Unofficial. Not affiliated with DevDocs or freeCodeCamp. DevDocs is open source
software by Thibaut Courouble and contributors (MPL-2.0).