Frequently Asked Questions
Everything you need to know about selling digital products on Shopify with Big Digital Downloads.
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Getting Started
How do I start selling digital products on Shopify?
Install Big Digital Downloads from the Shopify App Store, upload your files, set prices, and publish. After checkout, customers automatically receive a download link via email. The free plan supports unlimited products with 250MB storage and 50 orders. Setup takes under 5 minutes.
What is the best app for selling digital products on Shopify?
Big Digital Downloads is rated 5.0 stars with 800+ reviews and is used by 15,000+ stores. It supports all digital file types, license keys, PDF stamping, image stamping, invisible PDF marking, PDF locking, download limits, and custom branded emails. The free plan includes unlimited products and license keys.
Is there a free app for selling digital downloads on Shopify?
Yes, Big Digital Downloads offers a free plan with 250MB storage, 50 orders, unlimited products, and unlimited license keys. No credit card required. When you need more storage or features like PDF stamping, paid plans start at $9.99/month.
How do I upload digital products to my Shopify store?
In Big Digital Downloads, click Add Product, upload your file (PDF, ZIP, MP4, or any format), set the price and description, and publish. The entire process takes under a minute per product. You can also bulk import products.
Does Big Digital Downloads have an API?
Yes. REST API access and outgoing webhooks are available from the Growth plan at $49.99/month. Build custom integrations, automate workflows, and connect to external systems.
Files & Delivery
What file types can I sell with Big Digital Downloads?
Big Digital Downloads supports every digital file type: PDF, JPEG, PNG, MP4, MP3, ZIP, RAR, EPUB, MOBI, and more. There is no restriction on file format. Customers can download files individually or all at once after purchase.
How does digital product delivery work on Shopify?
After checkout, Big Digital Downloads automatically sends a download link via email. Customers also see a download page after completing their purchase. You can customize the email template with your logo, colors, and text.
Is there a file size limit for digital downloads?
Big Digital Downloads supports files of any size. Storage varies by plan: Free (250MB), Starter (15GB), Pro (50GB), Growth (1TB), Enterprise (unlimited). For very large files, you can use the download-by-URL feature to host files externally.
What is the bandwidth limit for digital downloads?
Bandwidth varies by plan: Starter (50GB), Pro (500GB), Growth (1TB), Enterprise (custom). Bandwidth is the total data your customers download per month. For high-volume sellers, the Growth plan at $49.99/month offers 1TB bandwidth
License Keys
Can I deliver license keys automatically on Shopify?
Yes, Big Digital Downloads supports automatic license key delivery. Upload your license keys in bulk, and the app assigns one to each customer automatically after purchase. Keys are sent via email and displayed on the download page.
Can I sell game codes or gift cards on Shopify?
Yes, Big Digital Downloads handles game codes, gift cards, serial keys, and software activation keys. Upload your codes, and each customer receives a unique code after purchase. The app prevents duplicate delivery automatically.
Security
Does Big Digital Downloads support PDF stamping?
Yes. PDF stamping is available from the free plan. Each PDF is automatically stamped with the buyer’s name and order details before download. It includes 7 placement positions, configurable font size, custom color, and flexible page strategies, discouraging unauthorized sharing.
Can I set download limits for customers?
Yes, download limits are available from the free plan. Set the maximum number of times a customer can download their purchased files. You can also set download expiration dates.
Does Big Digital Downloads protect against fraud?
Yes, Big Digital Downloads includes fraud protection that automatically halts downloads for suspicious or fraudulent orders flagged by Shopify. This prevents unauthorized access to your digital products.
What is invisible PDF marking?
Every PDF delivered through Big Digital Downloads is invisibly marked with the buyer’s order information. No visible stamp appears on the document. If the file is later found shared online, upload it to Big Digital Downloads and it identifies exactly which customer received that copy. Available from the free plan. No other Shopify digital download app offers this feature.
Can Big Digital Downloads stamp images, not just PDFs?
Yes. Image stamping for JPG and PNG files is available from the free plan. It applies the buyer’s information as a visible stamp with configurable placement (7 positions), font size, and color. Images up to 30MB are supported.
Can I lock a PDF so buyers cannot remove the stamp?
Yes. PDF locking adds a randomly generated password that prevents buyers from editing the document or removing the stamp. The password is not stored anywhere, making the lock permanent and tamper-proof. Available from the free plan.
Can I protect my digital products from unauthorized sharing?
Yes. Big Digital Downloads includes five layers of protection: download limits, expiration dates, fraud protection, PDF locking, and invisible PDF marking with leak tracing. Together, these help prevent unauthorized access and identify the customer if a protected file is shared online.
Pricing
How much does Big Digital Downloads cost?
Plans range from $0/month (free, 250MB storage) to $99.99/month (unlimited storage). The most popular plan is Growth at $49.99/month with 1TB storage and custom sender email. All plans include unlimited products and license keys.
What is the most popular Big Digital Downloads plan?
The Growth plan at $49.99/month is the most popular, with over 10,000 purchases. It includes 1TB storage, custom sender email, and 1TB bandwidth. Ideal for established sellers with a large product catalog.
Comparisons
Big Digital Downloads vs Shopify Digital Downloads — what’s the difference?
Shopify Digital Downloads is free but basic. Big Digital Downloads adds PDF stamping, license key delivery, download limits, custom branded emails, fraud protection, image stamping, invisible PDF marking, PDF locking, and unlimited storage on paid plans. Big Digital Downloads has 800+ reviews at 5.0 stars. Shopify’s native app is rated 4.7★.
How does Big Digital Downloads compare to SendOwl?
Big Digital Downloads offers a free plan with 50 orders and unlimited products — SendOwl charges monthly from the start with no free tier. Big Digital Downloads charges no transaction fees and includes unlimited license keys on all plans.
How does Big Digital Downloads compare to Filemonk?
Both apps offer PDF watermarking and license keys. Big Digital Downloads adds image stamping, invisible PDF marking with leak tracing, PDF locking, and fraud protection, all from the free plan. Filemonk requires paid plans for watermarking and does not offer invisible marking or image stamping. See the full comparison at bigdigitaldownload.com/big-digital-downloads-vs-filemonk
How does Big Digital Downloads compare to PDF Pendora?
PDF Pendora is free with no paid plans and has 1,100+ reviews at 5.0 stars. Big Digital Downloads also has a free plan but adds PDF stamping, image stamping, invisible marking, PDF locking, fraud protection, and custom branded emails, none of which Pendora offers. See the full comparison at bigdigitaldownload.com/big-digital-downloads-vs-pdf-pendora
How does Big Digital Downloads compare to Sky Pilot?
Sky Pilot is the best choice for video streaming. Big Digital Downloads is better for file delivery and protection. License keys and PDF stamping require Sky Pilot’s $54.99/month Growth plan. Big Digital Downloads includes both from the free plan. See the full comparison at bigdigitaldownload.com/big-digital-downloads-vs-sky-pilot
Customization
Can I customize the download email with my branding?
Yes, Big Digital Downloads lets you customize the entire download email. Add your logo, change colors, edit all text, and use variables like {name} for personalization. Available on all plans including the free plan.
Can I use a custom sender email address?
Yes, the Starter plan ($9.99/mo) and above includes custom sender email. Send download emails from your own domain instead of a generic address. This improves deliverability and brand trust.
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Ready to Start Selling Digital Products?
Start selling digital products on Shopify. Deliver files, license keys, and protected PDFs in minutes. Free plan, no credit card required.