# ApplyOnce – Local-first job application autofill that reads scanned resumes

> Source: <https://github.com/Nyadzayo/ApplyOnce>
> Published: 2026-09-04 08:28:50+00:00

Formerly codename FastApply; renamed after ASO research (fastapply.co is an existing competitor — see docs/ASO-REPORT.md). Internal storage keys and the IndexedDB name keep the old identifier for data compatibility.

One-click job application autofill, deterministic-first, local-only. See
`PLAN.md`

for the full design and `CLAUDE.md`

for agent/contributor rules.

**Install:** [Chrome Web Store](https://chromewebstore.google.com/detail/applyonce-job-application/anmljacnioamdkdcohmhbghlbcffbiaf) · Firefox: build from source
(`npm run build:firefox`

, see "Load in Firefox") until the AMO listing is live.
Version 0.2 adds layout-aware resume parsing, on-device OCR for scans, resume
re-import, and an optional on-device question classifier (PLAN.md Part 9).

```
npm install
npm run typecheck   # tsc --noEmit
npm test            # unit tests (vitest + jsdom)
npm run eval        # fixture eval: detection recall + mapping precision gates
npm run build       # production build (Chrome) → dist/
npm run build:firefox   # Firefox build → dist-firefox/
npm run e2e:firefox     # live Firefox e2e (Playwright Firefox + RDP sideload)
npm run release:firefox # dist-firefox + AMO upload zip + source zip → release/
```

`npm run build`

`chrome://extensions`

→ enable Developer mode →**Load unpacked**→ select`dist/`

- Open the side panel (click the ApplyOnce toolbar icon), complete onboarding (drop your resume, review the extracted profile, set explicit answers).
- Open a job posting (Greenhouse / Lever / Ashby / generic form) →
**Scan this page**→ review →** Fill**.

The extension never submits an application — you always click submit yourself.

`npm run build:firefox`

`about:debugging#/runtime/this-firefox`

→**Load Temporary Add-on…**→ select`dist-firefox/manifest.json`

.- Firefox treats MV3 site access as optional: open the ApplyOnce sidebar →
**Settings**→** Allow ApplyOnce on all sites**(or grant it under`about:addons`

→ ApplyOnce → Permissions). Auto-detection is silent until then. - Toolbar icon opens the sidebar; the in-page widget's panel button opens the panel in a tab (Firefox only allows opening the sidebar from a direct user gesture).

Differences from Chrome are all runtime feature-detected in
`src/shared/platform.ts`

: no offscreen document (resume parsing runs in the
background event page), `sidebar_action`

instead of `side_panel`

, and
Firefox's install-time data-collection consent gates telemetry. See
`docs/FIREFOX.md`

for the AMO submission steps.

`src/content/`

— scanner (shadow-DOM aware, radio grouping, widget hints) + filler (native setters, DataTransfer file attach, widget playbook). Only code with page-DOM access; injected on demand via`activeTab`

.`src/shared/`

— pure logic: zod schemas, canonical field ontology, matching cascade (ATS adapter rules → autocomplete tokens → label lexicon → saved answers exact/fuzzy → abstain), confidence + hard risk gates, CV text parser.`src/storage/`

— Dexie vault (profile, documents, saved answers, fill log), optional passphrase AES-GCM encryption, JSON export/import.`src/background/`

— stateless MV3 service worker: routing, job ids in`chrome.storage.session`

, offscreen lifecycle.`src/offscreen/`

— PDF.js / Mammoth resume parsing.`src/sidepanel/`

— React UI: onboarding, profile vault, review-and-fill loop, settings, diagnostics.`fixtures/`

+`evals/`

— the eval corpus is the product spec. Launch gates: detection recall > 0.95, mapping precision > 0.98, zero forbidden fills.

- OCR for scanned PDFs is stubbed (paste-text fallback instead) until Tesseract traineddata can be vendored into the package — no runtime downloads are permitted.
- Fixture corpus currently holds 4 synthetic pages modeled on real ATS DOM. Replace/extend with SingleFile captures of real postings (PLAN.md Phase 0 target: 40 pages) before trusting the accuracy numbers.
- Live-browser e2e scripts live in
`e2e/`

(`verify-extension.mjs`

for Chromium,`verify-firefox.mjs`

for Firefox); they run against the synthetic fixtures. Filler behavior on real ATS widgets still needs the 10-application live gate (PLAN.md Phase 4) before launch.