Engineer Tsai Studio — AI Tools & Services
Practical, narrowly-scoped AI tools that do one job well and tell you honestly when something needs a human to check — built and run by Engineer Tsai Studio. Below is everything currently live: paid services, and free tools/templates you can use right now with no signup.
Paid services
PDF Tables → Clean Excel
Turn PDF tables (statements, invoices, spec sheets) into a clean, structured Excel file — starting at $7 for up to 5 pages. We flag anything we're not confident about instead of guessing. Free related tool: how to keep formatting when converting a PDF table · free bank statement reconciliation template · two real sample deliveries.
Product Photo Background Removal
Clean, marketplace-ready product photos with the background removed — Starter $5, Standard $15, Bulk $30. Built for Amazon/Etsy/Shopify sellers who need consistent, listing-ready images without opening an editor. Free related tool: white background product photo guide · free background templates pack.
Chart of Accounts Starter Pack
A 31-category chart of accounts (CSV/JSON), $7 — a ready-to-use category list for small-business bookkeeping cleanup. Free related tools: how to categorize business bank transactions · free monthly books cleanup checklist.
Survey Verbatim Coding
Open-end survey responses coded against your codebook — Setup $60 one-time (we author the ruleset from your codebook), then Starter from $75 ($0.15/record). Every low-confidence call is flagged for your review instead of silently guessed. Free related tool: free survey codebook starter library (5 ready-to-use codebook templates). Recurring program? See the monthly verbatim-coding subscription (from $59/mo).
Offline Document Classifier & Metadata Extractor
A documented Python script bundle that sorts a document into one of 10 types and extracts date/ID metadata — $39 one-time, runs entirely on your own machine, no cloud call. Also available as a bundle with the PO/Invoice Reconciliation Template ($40).
PO/Invoice & Billing Reconciliation Template
A downloadable Excel/Sheets workbook with XLOOKUP-based formulas that auto-flag quantity mismatches, price mismatches, and missing line items between two tabular lists — $15 one-time.
Document Generation Batch
Send your own structured data (CSV, JSON, or spreadsheet) and get back a same-day batch of
polished, formatted .docx documents — invoices, memos, letters, reports, or
basic financial statements. $29 for up to 20 documents, one-time.
Marketplace Image Compliance Checker
A downloadable Python script that checks already-finished product photos against Amazon, Etsy, and Shopify's real published image specs and reports PASS or REVIEW_REQUIRED per photo — $24 one-time, single-machine license.
Free tools (no signup, no catch)
- Bank statement reconciliation template (.xlsx)
- Product background templates pack (.zip)
- Monthly books cleanup checklist (.csv)
- Video caption styling presets (.zip) — plus a free how to burn captions into a video guide, from our audio/video transcription work-in-progress.
- Survey codebook starter library (.zip) — 5 ready-to-use codebooks (churn, NPS, product feedback, event feedback, employee exit).
- Channel margin calculator (Etsy vs Amazon FBA/FBM vs eBay vs Shopify) — up to 5 SKUs, no signup.
- Digital download pricing & sales goal calculator — loaded contribution, break-even price, and required orders/visitors for template and digital-product sellers.
- Digital asset license tier pricing calculator — price Personal/Commercial/Extended tiers and see your blended contribution across your own sales mix. Not legal advice.
- PDF-to-Excel: DIY vs. paid service calculator — compares real manual re-typing cost against our own live PDF-to-Excel pricing, with a break-even hourly rate.
Data APIs on Apify Store
Pay-per-result web data Actors (LinkedIn Ad Library, Google Ads Transparency, Google News, Google Trends, YouTube search): see all data Actors and the LinkedIn Ad Library accuracy benchmark.
How we work
Every service above follows the same rule: flag what we're not confident about instead of guessing and hoping it's close enough. That applies to a low-confidence table cell in a PDF extraction the same way it applies to an ambiguous transaction in a bookkeeping cleanup — you get a clear list of what needs your eyes, not a file that quietly hides the uncertain parts.
Questions or a custom scope
Something close but not quite one of the above (a larger batch, a recurring monthly need, a slightly different document or image type)? Email hello@tsaielectro.com with a rough sense of what you need — we'll tell you honestly whether it fits, and a price, before you commit to anything.