Automate Certificate Generation
with an API
Stop creating certificates one at a time. Design a template, connect the API, and generate personalized certificates for every recipient automatically.
Manual certificate creation does not scale
Certificates are a core part of online courses, corporate training, events, and professional development programs. But the traditional workflow of designing each certificate individually does not hold up when you have hundreds or thousands of recipients.
The Image Automation API turns certificate generation into a fully automated process. Design your certificate template once with dynamic fields for recipient name, course title, date, and any other variable data. Then generate each certificate through a single API call, ready for download or email delivery.
Hours spent on repetitive design work
When a course has 500 graduates or an event has 2,000 attendees, someone has to open a design file, change the name, export the image, and repeat. This is tedious, error-prone, and takes hours that could be spent on higher-value work.
Typos and inconsistencies slip through
Manual data entry means misspelled names, wrong dates, and inconsistent formatting. Recipients notice these mistakes, and they undermine the credibility of your program.
Delivery delays frustrate recipients
When certificates take days or weeks to arrive because they are stuck in a design queue, the moment of achievement has passed. Immediate delivery reinforces the value of the accomplishment.
How it works
From template design to automated delivery in three steps.
Design your certificate template
Use the visual editor to create a professional certificate layout. Add dynamic text layers for the recipient name, course or event title, date of completion, instructor name, and certificate ID. Upload your organization logo, set brand colors, and add decorative elements like borders and seals.
Connect to your platform
Integrate the REST API into your LMS, event platform, HR system, or custom application. When a learner completes a course or an attendee checks in, your system sends a POST request with the recipient data. The API renders the certificate and returns a hosted image URL or downloadable file.
Generate and deliver automatically
Each API call produces a unique, personalized certificate in seconds. Embed the image URL in a congratulatory email, make it available for download in your platform dashboard, or store it for later retrieval. The entire process runs without any manual intervention.
Purpose-built for certificate workflows
Features that matter for EdTech platforms, HR teams, and event organizers.
Dynamic personalization
Every certificate is unique. Pass the recipient name, course title, completion date, grade, instructor, and certificate number as API parameters. The template renders each field in the exact position and style you designed.
Bulk generation
Generate hundreds or thousands of certificates in a single batch. Process an entire graduating class, conference attendee list, or quarterly training cohort without manual work. Each certificate renders in seconds.
Email delivery integration
Combine the Image Automation API with your email service (SendGrid, Mailgun, Amazon SES, or any SMTP provider) to send certificates immediately after generation. Attach the image or include a download link.
High-resolution output
Generate certificates at print-quality resolution. Output as PNG for digital sharing or high-DPI images suitable for printing. Control dimensions, quality, and format to match your requirements.
Brand consistency at scale
Your template locks in the design: fonts, colors, logo placement, and layout stay consistent across every certificate. No more drift from the brand guidelines as volume increases.
Unique certificate IDs
Pass a unique identifier with each API call and render it on the certificate. Use this for verification, QR code generation, or linking back to a validation page on your platform.
Frequently asked questions
How do I automate certificate generation via API?
To automate certificate generation, first create a certificate template in the visual editor with dynamic layers for variable content like the recipient name and completion date. Then integrate the REST API into your application. When a user completes a course or event, your system sends a POST request with the recipient data as JSON parameters. The API renders the certificate image and returns a URL you can use for delivery. The entire process takes seconds and requires no manual design work.
Which tools can generate certificates automatically?
Several approaches exist for automated certificate generation. Dedicated image generation APIs like the Image Automation API let you design a visual template and generate certificates programmatically through REST calls. Other options include building custom solutions with libraries like Puppeteer or ImageMagick, though these require significantly more development effort. The Image Automation API approach is the fastest to implement because it separates the design (visual editor) from the logic (API call), meaning non-developers can update the certificate design without code changes.
Can I send certificates automatically via email after API generation?
Yes. After the API generates a certificate and returns the image URL, you can immediately trigger an email through your preferred email service. The typical workflow is: your application detects a completion event, calls the certificate API, receives the image URL, then passes that URL to your email provider (such as SendGrid, Mailgun, or Amazon SES) as an attachment or inline image. This entire chain can run automatically without any human involvement.
What file formats are supported for certificates?
The API supports PNG, JPEG, and WebP output formats. For certificates that will be shared digitally or displayed in a web browser, PNG provides the best quality with sharp text rendering. For certificates intended for print, you can generate high-resolution PNG files at 300 DPI or higher. You can also generate PDF certificates by combining the image output with a PDF generation step in your pipeline.
How many certificates can I generate at once?
There is no hard limit on the number of certificates you can generate. The API processes each request independently, so you can send hundreds or thousands of requests in parallel or sequence them based on your needs. For large batches, such as generating certificates for an entire course cohort, we recommend processing 10 to 50 concurrent requests for optimal throughput. Most certificates render in under 3 seconds each.
Automate your certificate workflow
Generate personalized certificates with a single API call. Free tier available, no credit card required.