Two Lines in Requirements.txt: Pillow, Reportlab, and Nothing Else

Description and use

An automation recipe that generates platform‑specific CSV headers, tracks uploads to avoid duplicates, packages products with covers and thumbnails, and converts Markdown to PDF, all on a single vCPU and 2 GB RAM.

Problem

Uploading vector assets to multiple marketplaces fails because of incorrect CSV headers and duplicate submissions, causing rejection and account flags.

Outcome

39 products were successfully uploaded with correct metadata, no duplicates, and proper packaging, all on a single vCPU and 2 GB RAM.

Workflow

• Generate platform‑specific CSV headers with make_metadata.py
• Optionally supply titles.json for accurate titles
• Track upload status with upload_tracker.py to prevent duplicates
• Package products with pack_product.py, rendering covers and thumbnails via Pillow
• Convert Markdown to PDF with md2pdf.py using ReportLab
• Organize project folder structure for clarity

Evidence

The rejection email was four words long: "Invalid CSV header."

Source

So make_metadata.py does one job: it walks a folder of files and writes the exact header each platform demands, nothing more.

Source

upload_tracker.py is a plain ledger. It remembers what you have marked done, so a re-run only shows what is left.

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pack_product.py zips the files and renders a 1280x720 cover plus a 600x600 thumbnail

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The whole pipeline ran on 1 vCPU and 2 GB of RAM

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