novatechset
14th January 2026.Alt text often enters the publishing workflow quietly. It may be added late in production, treated as a requirement rather than a choice, or assumed to be straightforward. In STEM publishing, that assumption can be costly. When research relies heavily on figures, charts, and visual explanations, the absence or poor quality of alt text can make critical information inaccessible to some readers.
For publishers working to improve accessible STEM content, alt text is not a minor technical step. It is part of how knowledge is shared, understood, and included.
Alt text is a written description that allows readers using screen readers to understand the meaning of an image. In scholarly publishing, it is often confused with captions or reduced to a brief label. This approach misses the purpose of alt text accessibility.
A caption supports readers who can see the image. Alt text supports readers who cannot. The two serve different roles, and both are essential. In image accessibility in publishing, alt text should communicate the information a reader needs to grasp the image’s intent, not simply confirm that an image exists.
This distinction becomes especially important in scientific content, where images often carry conclusions rather than decoration.
STEM publishing depends on visuals to communicate complexity. Graphs illustrate trends, diagrams explain systems, and equations express relationships that may not be fully described in surrounding text. For readers using assistive technologies, these visuals are only accessible if alt text for scientific images is thoughtful and complete.
Without meaningful alt text, a reader may know that a chart is present but not what it shows. In practical terms, this can mean missing a key result, misunderstanding a method, or being unable to evaluate a conclusion. When this happens, the issue is not just accessibility. It is whether the research itself is being communicated clearly.
Alt text in STEM publishing therefore sits at the intersection of accessibility and comprehension.
Accessibility standards play an important role in scholarly publishing, but focusing only on compliance can limit how alt text is approached. When alt text is written solely to meet a requirement, it often becomes vague, repetitive, or disconnected from the content it is meant to support.
Approached differently, alt text can improve clarity for everyone. It encourages teams to think carefully about what a visual is meant to convey and how that information supports the broader narrative. This mindset strengthens accessible scholarly publishing by treating alt text as part of content quality, not an afterthought.
Inclusive publishing is not only about meeting guidelines. It is about ensuring that research can be understood in more than one way, across formats and reading needs.
Even when alt text is present, it does not always serve its purpose. In many STEM workflows, alt text is written quickly, without subject context, or without enough guidance on what readers actually need.
A complex chart may receive a one line description that repeats the title. A diagram may be labeled without explaining the relationships it illustrates. Equations and data visualizations are sometimes skipped entirely. These challenges of alt text in scientific content are rarely intentional. They are usually the result of time pressure, unclear ownership, or the assumption that alt text is simple.
Recognizing these gaps is the first step toward making STEM visuals accessible in a meaningful way.
Accessibility in scholarly publishing is no longer limited to a small group of stakeholders. Readers, institutions, and partners increasingly expect digital accessibility to be part of standard publishing practice. Alt text is central to meeting those expectations, particularly as content moves across platforms such as HTML, EPUB, and PDF.
For publishing teams, this shift raises practical questions. Who is responsible for alt text. When should it be created. How can quality be maintained at scale. Addressing these questions early helps ensure that accessibility is built into workflows rather than added at the end.
Alt text may not be visible to every reader, but its absence is felt by those who rely on it.
nAltText, an AI-driven solution, helps publishers generate accurate and consistent alt text for images efficiently. It automates the extraction of images, captions, and surrounding text from PDFs and JATS XML packages, generates alt text, and performs quality checks before sending it for human review. The system supports common formats like JPEG, PNG, TIFF, PDF, and delivers output in XML or Excel, integrating seamlessly with internal and external publishing workflows through APIs.
By combining AI efficiency with human oversight, nAltText helps publishing teams save time, maintain quality, and ensure accessibility without adding extra manual effort.
As STEM publishing continues to evolve, alt text will remain a foundational element of accessible content. Improving alt text for graphs, charts, and equations is not only about supporting assistive technologies. It is about respecting how readers engage with research in different ways.
When alt text is treated as a meaningful part of publishing, it supports clarity, inclusion, and trust in the content itself. For publishers committed to sharing knowledge widely and responsibly, that is a goal worth investing in.
Alt text may seem like a small detail, but in STEM publishing, it plays a significant role in who gets to access and understand scientific work.
For publishers interested in learning more about how AI can support accessible STEM content, connect with us to explore Nova Techset’s alt text solutions.