What is OnStyle?
OnStyle is a Microsoft Word add-in that automates formatting validation and enforces document standards using predefined and configurable rule sets. It is designed for organizations that rely on structured templates, strict brand guidelines, or regulated documentation requirements.
The software evaluates documents against defined formatting and structural rules. It checks heading hierarchies, numbering logic, spacing, table formatting, captions, cross-references, hyperlinks, and style usage. It detects broken links, unresolved tracked changes, manual formatting overrides, and deviations from approved templates. Validation is performed through modular inspection components that can be configured to reflect internal policies or industry-specific standards.
Many identified issues can be corrected automatically, including style normalization, reference updates, and removal of unauthorized formatting. This reduces manual rework and minimizes inconsistencies that typically arise from collaborative editing. Because the validation runs directly inside Microsoft Word, users can review and resolve issues without exporting files or using external tools.
OnStyle supports standardized document production by replacing manual checklist reviews with rule-based verification. Organizations that process high volumes of formal documents, such as reports, contracts, technical documentation, or regulated submissions, can use it to reduce formatting-related review cycles, improve consistency across authors, and lower the risk of non-compliant deliverables.
Categories & Use Cases
Videos
Screenshots

OnStyle User Interface (without applied DocConfig)
Product Demos
Technical Details
| Deployment Types | On-Premise |
|---|---|
| Operating Systems | Windows |
| Mobile Application | No |
| Supported Countries | Global |
| Supported Languages | English |
FAQs
How much does OnStyle cost?
OnStyle starts at $45.
What are OnStyle's top competitors?
Templafy, DocStyle, and PerfectIt are common alternatives for OnStyle.