COLONFILM studio tools

FREE TOOLS. for writers & publishers.

Practical studio tools. 100% free. No sign-up.

Practical tools to plan, design and publish your book with confidence.

The two everyone uses

GET THE SPECS RIGHT. Before you upload.

Signature tool

Generate high-resolution, vector-crisp ISBN and EAN-13 barcodes ready for your back cover.

Signature tool

Calculate spine width, total cover dimensions and safe areas for Amazon KDP and IngramSpark.

Decide what the book is

Test titles and subtitles against genre patterns, length rules and discoverability guidelines.

Define the core visual direction for your cover: mood, symbol, palette and genre tropes.

Evaluate manuscript, cover, interior and marketing readiness before launch.

Price it and ship it

Compare earnings across KDP, IngramSpark and direct distribution at every price point.

The exact questions a professional designer needs answered — fill it once, brief any designer well.

Every step from final manuscript to launch day, in order — manuscript, design, metadata, platforms and promo.

Step-by-step articles on cover design, typesetting, KDP uploading and pricing strategy.

NEED A PRO COVER? That's the day job.