Overview
UPCgen is a free, web-based barcode generator that creates valid UPC, EAN, ISBN, ITF-14, Code 128, Data Matrix, and FNSKU codes. It is designed for Amazon FBA sellers, Shopify/Etsy merchants, warehouses, self-publishers, and pharma operators who need a quick, platform-approved barcode without signing up or paying. The tool offers bulk generation (up to 10,000 codes) and exports to CSV, PNG, PDF, SVG, or EPS.
Firma.dev is a developer-first e-signature API that costs just €0.029 per envelope – dramatically cheaper than traditional providers like DocuSign. It provides a clean REST API, embeddable template and signing editors, webhooks, and full white-labeling capabilities. Built for SaaS teams and startups, it allows integration in hours and includes a free sandbox for testing.
Feature Comparison
| Feature | UPCgen | Firma.dev |
|---|---|---|
| Primary Function | Barcode generation (UPC, EAN, ISBN, ITF-14, Code 128, Data Matrix, FNSKU) | E-signature API for document signing workflows |
| Target Audience | Amazon FBA sellers, Shopify/Etsy sellers, warehouses, self-publishers, pharma operators | Developers, SaaS teams, startups needing embedded e-signatures |
| Integration Method | Web-based generator with bulk CSV/PNG/PDF/SVG/EPS export; no API mentioned | REST API, embeddable iFrame, pre-built UI components, webhooks |
| Pricing Model | Free tier (1 code/24h), free registration (5 codes/24h), subscription for more | Pay-as-you-go: €0.029 per envelope, no minimums, no contracts |
| Compliance / Standards | GS1 standard validation, check digit verification, platform-approved for Amazon/Shopify/Etsy/eBay/Walmart | SOC 2, ISO 27001, eIDAS, GDPR, ESIGN/UETA compliant, audit trails |
| White-Label / Branding | Not mentioned; codes are generated as-is | Fully white-label: custom branding, iFrame styling, resell-ready |
| Bulk Operations | Generate up to 10,000 codes at once, export to multiple formats | Send multiple envelopes via API; bulk sending possible programmatically |
| Developer Tools | No API or developer tools mentioned | Swagger/OpenAPI docs, sample apps, webhook events, team management API |
| Free Trial / Sandbox | Free tier with limited daily codes; no sandbox mentioned | Free sandbox key with unlimited test documents, no credit card required |
| Support | Contact form for bespoke services; step-by-step platform guides | Support directly from engineers; email support |
Pricing
UPCgen Pricing:
- Free tier: 1 code every 24 hours (anonymous, no sign-up)
- Free registration: 5 codes every 24 hours
- Subscription: Higher limits available (exact pricing not disclosed on the page)
- No mention of one-time purchases or enterprise plans
Firma.dev Pricing:
- €0.029 per envelope (approximately $0.03 USD)
- Pay-as-you-go, no monthly fees, no minimums, no contracts
- Buy credits as needed; free sandbox for testing
- Unlimited teams included
- Significantly cheaper than DocuSign ($4-5 per envelope)
Pros and Cons
UPCgen Pros
- Completely free for low-volume use
- Supports a wide range of barcode types (UPC, EAN, ISBN, ITF-14, Code 128, Data Matrix, FNSKU)
- Bulk generation up to 10,000 codes with multiple export formats
- GS1-validated check digits and platform-approved for major marketplaces
- Anonymous generation available without sign-up
UPCgen Cons
- No API or developer integration options
- Daily limits on free tiers may be restrictive for high-volume users
- Pricing for higher limits is not transparently displayed
- No sandbox or test environment mentioned
Firma.dev Pros
- Extremely low cost per envelope (€0.029) – up to 99% cheaper than DocuSign
- Developer-first: clean REST API, embeddable editors, webhooks, and sample apps
- Fully white-label and resell-ready with custom branding
- Compliant with major standards (SOC 2, ISO 27001, eIDAS, GDPR, ESIGN/UETA)
- Free sandbox with unlimited test documents, no credit card required
Firma.dev Cons
- Only supports e-signature workflows – no barcode generation
- Requires development effort to integrate; not a plug-and-play tool for non-technical users
- Pricing per envelope may add up for very high-volume sending
- Limited to digital document signing; no physical label or barcode output
Verdict
UPCgen is the go-to choice for anyone needing quick, free, GS1-valid barcodes for e-commerce or labeling, especially for low-to-moderate volume. Firma.dev is ideal for SaaS teams and developers who want to embed affordable, compliant e-signatures into their applications. Choose UPCgen for barcode generation and Firma.dev for document signing – they serve entirely different needs.
Firma.dev
UPCgen