Production
Caliana ISBN & Serial Barcode Tool
Generate print-ready ISBN, ISSN, and ISMN barcodes with EAN-13 encoding, price supplements, and validation. Download as SVG or high-resolution PNG. Free forever — no account required.
Launch ToolThe Publishing Lab
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Production
Spine Width Calculator
Calculate spine width for KDP, IngramSpark, and Lulu simultaneously. Visual spine preview with real-time scaling.
Financial
Royalty & Profit Calculator
Compare royalties across KDP, IngramSpark, Lulu, and direct sales side by side. Find your most profitable channel.
Planning
Manuscript Page Estimator
Estimate page count from word count with genre presets. Visual page preview and spine width integration.
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