Open a separate Chrome profile
Use a browser profile you control for testing. Sign in to the GST Portal directly in that profile.
Pre-1.0 beta
Pack documentation
Pack has a public Chrome Web Store V0 listing and remains source-reviewable. The Chrome
Web Store has version 0.5.1 of the beta. These docs cover building the tagged v0.5.1
release from source; no tag matches the Store package (see the steps below).
Using Pack
Use Pack only with GST accounts, periods, and documents you are authorised to
access.
Open the current Chrome Web Store listing or build from source
The Chrome Web Store listing has version 0.5.1 of the beta. No release tag matches that package: tag v0.5.1 carries the same version number but an older manifest summary ("Alpha") and predates the Store build, which was made from later source that is not yet recorded. Building tag v0.5.1 lets you audit that tagged release, not the Store package. Enable Developer mode at chrome://extensions, choose Load unpacked, and select .output/chrome-mv3 from your local build.
Open the supported GST page
Navigate to the supported filed GSTR‑3B or GSTR‑1, or auto-drafted GSTR‑2B, download area for an account and period you are authorised to access.
Start the download
Open Pack, choose the supported return scope, and let Chrome save the requested PDF or Excel file locally.
Install from source
Build locally only after reviewing the repository, release status, and source
version.
git clone https://github.com/ComplyEaze/pack.git
cd pack
git checkout v0.5.1
nvm use
corepack enable
pnpm install --frozen-lockfile
pnpm run wxt:prepare
pnpm run compile
pnpm test
pnpm run build
pnpm run verify:package
Expected build output: .output/chrome-mv3. Load that
directory at chrome://extensions. The repository default
branch may differ from the tagged release; stay on the tag when
reproducing the tagged release.
Browser permissions
The permissions are narrow and tied to the supported local workflow.
downloads
Starts and correlates the supported GST Portal PDF download.
scripting
Inspects and operates supported controls on exact GST Portal pages.
offscreen
Builds a ZIP from selected documents in the browser, staging them
temporarily in browser-local storage (OPFS). Pack removes them after a
confirmed export or an explicit discard, and keeps them if that cleanup
fails.
storage
Keeps local install metadata, run/recovery state, the local demo manifest,
and temporary session workflow snapshots in the browser profile.
GST Portal hosts
Limits access to the official GST Portal URL patterns declared by the
extension.
Troubleshooting
Start with the browser profile, portal session, supported page, and Chrome
download controls.
- Pack cannot find my GST tab: open a supported GST Portal page in the same Chrome profile, then reopen Pack.
- My session expired: sign in again on the GST Portal directly and restart the Pack flow.
- Chrome blocked multiple downloads: allow downloads for the GST Portal only when you expect more than one file.
- The requested return is not visible: confirm the return is filed and visible in the supported portal area.
- The download did not begin: check Chrome download permissions, the browser download shelf, and the configured download folder.
Clear local Pack data
Use the extension options page Clear local Pack data control, reload the
extension, or remove the extension from Chrome to delete local extension state.
Session storage clears when the extension is reloaded, updated, disabled, or the browser restarts. Local storage may retain install metadata, the active filed-return run lease, full-year ledger, target-review state, and the local demo manifest until cleared or removed.
Developing Pack
Build notes, package checks, and contribution details are kept with the source
repository.
- Review the source repository and package scripts before building.
- Run the extension tests and package verifier before trusting a reproduced local build.
- Use redacted or demo data for screenshots and issue reports.