Bonusradar

A browser extension (MV3, for Firefox and Chrome) that shows a small widget when the site you're on is a SAS EuroBonus shopping partner, with the points rate and a one-click link to shop via the portal so you actually earn them. Covers all three EuroBonus markets on LoyaltyKey's catalog: Sweden, Norway and Denmark. There's also an iOS Safari userscript build.

How it works

There is no bundled shop list to go stale. On install (and once a day) the extension fetches the SAS partner catalog for all three markets straight from LoyaltyKey's browser-extension API:

https://onlineshopping.loyaltykey.com/api/browser-extension/sas/<locale>/shops

(sv-SE, nb-NO, da-DK) — each returns a { "domain": "shopId" } map. The three maps are merged locally into one index; a domain that's a partner in more than one market keeps a separate entry per market, since the shop id, points rate and tracked clickthrough link are market-specific.

The current tab's hostname is matched locally against that index (so your browsing isn't sent anywhere). Only when you're actually on a partner site does it fetch that one shop's detail (/shops/<shopId>) to show the points and the tracked clickthrough URL.

Home country: auto-detected from your browser's language (sv → Sweden, nb/nn/no → Norway, da → Denmark, anything else defaults to Sweden). Click the toolbar icon to override it — useful if a shop is a partner in more than one market and you want the widget to use the tracked link for the market you're actually a EuroBonus member in.

The widget has two states. Blue (with a "shop via EuroBonus portal" link) means you're on a partner site but not in a tracked session. Green ("EuroBonus tracking active!") means you arrived via the portal and points will actually track — detected from the affiliate params SAS leaves on the landing URL (utm_campaign naming the flysas portal, or a network click-id like tduid/awc/at_gd alongside an affiliate utm_medium), with document.referrer as a supplementary hint.

Load it in Firefox

1. Go to about:debugging#/runtime/this-firefox
2. Load Temporary Add-on… → pick this folder's manifest.json (or run python3 build.py and pick the resulting .xpi)
3. Open the extension's console (Inspect on this Firefox page) — you should see a line like loaded shops — SE: 454, NO: 236, DK: 272; adlibris.com present: true
4. Visit https://www.adlibris.com/sv — the widget should appear as a small badge top-right.

Temporary add-ons vanish on restart. To make it permanent, sign it: submit the zip to addons.mozilla.org as an unlisted add-on and self-install the signed .xpi, or set xpinstall.signatures.required to false on Firefox Developer/Nightly/ESR.

Load it in Chrome

No terminal needed — just download and click:

1. Go to the latest release and download bonusradar-chrome-<version>.zip.
2. Unzip it: on Windows right-click the file → Extract All; on Mac double-click it. You'll get a folder called bonusradar-chrome-<version>.
3. Open Chrome, type chrome://extensions in the address bar, and press Enter.
4. Turn on Developer mode (switch in the top-right corner).
5. Click Load unpacked and choose the folder from step 2.
6. Done — visit https://www.adlibris.com/sv and a small badge appears top-right when you're on a partner shop.

Keep the unzipped folder where it is (don't delete it) — Chrome loads the extension from that folder. Chrome may show a "Disable developer mode extensions" pop-up now and then; just click Keep. The extension stays installed across restarts.

(Developers: run python3 build.py to rebuild the .zip/.xpi from source — see Building.)

iOS Safari (userscript)

Safari on iOS doesn't support browser extensions like Firefox does, but there's a userscript build with the same matching logic at userscript/bonusradar.user.js that runs via a userscript manager.

1. Install Userscripts (free) from the App Store, then enable it under Settings → Safari → Extensions.
2. Open this link in Safari and tap Install when Userscripts prompts you: https://raw.githubusercontent.com/Godhet/bonusradar/main/userscript/bonusradar.user.js
3. Visit a partner site — the widget should appear as a bar across the top of the page.

The userscript has no background page, so the shop list refreshes opportunistically (once a day, on whichever page you happen to be on) rather than on a fixed timer. To change your home country, tap the small country code shown on the left side of the banner.

Privacy

Matching happens locally against the cached index — the list of sites you visit is never sent anywhere. The extension makes network requests to:

• LoyaltyKey, (a) once a day for the three market catalogs and (b) for a single shop's detail when you land on a partner site. Sent without credentials, so they're anonymous.
• A handful of affiliate-network domains (TradeDoubler, Awin, Adtraction, Partner-ads, Adservice), once a day, as a no-cors "bait" request to detect whether an ad/content blocker would break bonus tracking. These carry no data and nothing is read from the response — only whether the request was allowed out.

Tests

node test/match.test.js

Building

python3 build.py

No transpiler, minifier, or bundler — the packaged files are byte-for-byte the source in this repo. The only per-browser difference is which manifest is used (manifest.json for Firefox, manifest.chrome.json for Chrome); everything else is shared. lib/compat.js aliases browser → chrome so the same code runs in both.

Notes & credit

The browser-extension API endpoint and response shapes were identified from the open-source BonusVarsler project (github.com/kristofferR/BonusVarsler, GPL-3.0) — thanks to them for charting the path. This extension shares no code with it; it just calls the same public LoyaltyKey API. Not affiliated with SAS or EuroBonus.

License

MIT — see LICENSE.

Buy me a coffee?

No pressure, but if this saved you some EuroBonus points and you're feeling generous: ko-fi.com/socker ☕