Booster isn't on the Chrome Web Store by choice — this page walks you through installing it directly, the same way developers test extensions they're building.
Move it out of your Downloads folder first — e.g. into
Documents\Booster — so Chrome doesn't lose track of it
if Downloads gets cleaned up later.
Type this into your address bar:
chrome://extensions
Toggle it on in the top-right corner of that page. This is a normal Chrome setting for loading extensions outside the Web Store — it doesn't change anything else about your browser.
A new button appears once Developer mode is on. Select the
unzipped booster folder from step 1.
Click the Booster icon in your toolbar, enter your email, and click the confirmation link we send you. Paste the license key it shows you back into the popup — that's the whole account system, no password involved.
Open chatgpt.com — Booster's bar appears above the composer. Type normally and hit send; it boosts automatically.
Booster only runs on chatgpt.com and only acts on text you type into the composer — it doesn't read images, uploaded files, or other tabs. The code that does the actual compression runs on our server, not in the file you're loading, specifically so there's less to just take on faith in the local files.
That's simply how Chrome loads any extension that isn't installed from the Web Store — it's not specific to Booster, and it doesn't grant any extra permissions beyond what's listed for this extension.
Chrome can't silently update a manually-loaded extension. Booster's popup will tell you when a new version is available; download it again and repeat step 4 to replace the old one.