pdfToolbox Opens in new tab
pdfToolbox handles poorly created PDF files that fail in production environments and fixes many issues early, before they cause costly mistakes.
PDF works
callas software finds simple ways to handle complex PDF challenges
Our products
pdfaPilot Opens in new tab
pdfaPilot identifies files that do not fully meet archival or accessibility standards and automatically corrects many common issues to reduce legal, operational, or reputational risk.
pdfChip Opens in new tab
pdfChip automatically generates PDF files from HTML templates and incoming data in production environments, while fully supporting advanced print features.
License Server Opens in new tab
License Server decouples where software is used from where it is licensed, enabling flexible product licensing in modern, scalable environments.
pdfGoHTML Opens in new tab
pdfGoHTML converts PDFs to structured HTML to inspect tagging, structure, language, and reading order, helping verify whether accessibility tagging is meaningful – not just technically compliant.
pdfDPartner Opens in new tab
pdfDPartner is an Adobe Acrobat plugin for inspecting and working with DPart metadata, making page-level document structure and associated metadata visible and usable.
Solutions for every PDF use case
Whether you’re a commercial printer, an OEM, or a developer building PDF workflows, callas offers solutions for every use case. From preflighting and color accuracy to automation and integration, explore how our tools can help solve your specific challenges.
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Our partners
callas software actively supports international standards and has been participating in ISO, CIP4, the European Color Initiative and the Ghent PDF Workgroup. callas is also a contributing member in organizations and associations of industry leaders and experts including AIIM, Fogra and VOI.
Success stories
This is how we’ve solved our customers’ challenges.
Upcoming events
At callas software, we believe in creating opportunities to connect, learn and grow. Whether you’re looking to explore the latest in PDF technology, expand your knowledge of callas products, or network with other users and experts, our events have something for everyone.
callas pdfCamp '26 Autumn
Are you working with callas technology and struggling with PDF files that fail in production—or wondering how to optimize your automation workflow? Then pdfCamp is for you. On October 22–23, 2026 in Berlin, you work directly with the people building the software. Bring your own PDFs and questions and tackle them hackathon-style together with the callas team and other users. There is no fixed agenda—attendees shape the sessions with their own production problems and ideas. To keep the discussions interactive and personal, seats are limited and usually fill quickly.
Find a reseller
callas software maintains a close relationship with its resellers all over the world. Our commercial and technical partners have a thorough knowledge of the callas products and are experts in integrating callas software technology in your PDF workflow.