What’s New at Blueink - April 2026
In April, Blueink introduced two new updates focused on improving document generation and data validation workflows.
HTML-to-PDF Document Generation with APIv2
Blueink now supports creating Bundle Documents directly from HTML using the file_html parameter in APIv2. Developers can generate PDFs and send them for eSignature in a single API request without manually rendering or uploading PDF files.
Highlights
- Generate PDFs directly from HTML during Bundle creation
- Automatically detect eSignature fields from HTML form elements
- Use
data-blu-*attributes for advanced field configuration - Create signature, initials, date, checkbox, dropdown, and text fields directly from HTML
- Control field detection behavior using
html_fields_mode - Apply print-ready layouts with HTML and CSS
Additional support includes:
- Automatic label detection
- Validation patterns
- Checkbox groups
- Field editor assignment
- Secure HTML parsing with JavaScript removal
Read the HTML-to-PDF Technical Documentation
Regex Validation for Text Fields
Blueink also added Regex Validation support during document preparation. This allows users to apply custom validation patterns to Text Fields to control how signer input is entered.
Regex validation can be used for:
- Numbers-only fields
- Email validation
- Phone number formatting
- Custom input rules
Users can enable Regular Expression validation directly from field settings and add custom validation messages for signers when needed.
Regex Validation is available on all Blueink plans except the Standard plan.