Free & open

Free Publishing Tools

Practical tools for publishers, editors, and content creators. Validate your EPUBs, check accessibility, estimate savings — all free, all instant.

For everyone

Universal tools that work for any catalog or content team.

EPUB Checker

Validate your EPUB files for structure, metadata, content integrity, and best practices. Get a quality score and detailed issue report.

Check your EPUB

EPUB Accessibility Checker

Check your EPUB files for accessibility issues, WCAG conformance, alt text, language markup, heading structure, ARIA roles, and more.

Check accessibility

Ebook Price Calculator

Get a data-driven price recommendation for your ebook based on genre, length, publisher tier, author track record, and target market.

Calculate price

2026 U.S. Marketing Calendar

120+ key dates and campaign ideas for the U.S. book industry. Retail holidays, literary celebrations, award seasons, festivals, and more.

Download free calendar

For authors

Tools for indie authors and self-publishers deciding where to sell.

Explore the Authors solution →

Author Royalty Calculator

Compare what you earn per book on Amazon KDP, Apple Books, Kobo, Google Play and a direct-to-consumer storefront — side by side, annual projection.

Calculate earnings

Self-Publishing Readiness Assessment

Eight short questions, a 0-100 readiness score, and three personalized next steps for indie authors deciding between KDP, marketplaces, and direct-to-consumer.

Take the assessment

For publishers

Model revenue and margins for trade and digital-first publishers.

Explore the Publishers solution →

Publisher Revenue Calculator

Estimate how much more revenue a trade or digital-first publisher keeps by adding a direct channel alongside Amazon and retail distribution.

Calculate revenue

For university presses

Tools for academic publishers building a direct-to-consumer channel.

Explore the University Presses solution →

University Press ROI Calculator

Model the impact of shifting university press sales from Amazon and institutional channels to a direct-to-consumer storefront. Keep 85% vs 35%.

Calculate ROI

D2C Readiness Assessment

Evaluate your university press's digital maturity across 5 key areas. Get a personalized score, benchmarks, and actionable recommendations.

Take the assessment

For magazines & newspapers

Model paywall and subscription revenue for editorial brands.

Explore the Magazines solution →

Magazine Paywall Calculator

Project paywall and subscription revenue for magazines and digital newspapers. Test conversion, ARPU and churn scenarios in seconds.

Model paywall revenue

For bookshops

Tools for independent bookshops launching a digital storefront.

Explore the Bookshops solution →

Bookshop Storefront Calculator

See how much more revenue you keep by moving sales from Bookshop.org and affiliate links to your own owned digital storefront.

Calculate margin

Need a custom solution?

Publica.la helps publishers manage, distribute, and sell digital content at scale — with enterprise-grade tools and dedicated support.

Schedule a demo