UnSed Labs · Browser-only production tools

Drop it in.
Toast it.
Ship it.

A suite of tiny, sharp, local-first tools for getting creative assets release-ready. No bloated editor. No mystery upload pipeline. Just last-mile production for books, covers, colouring books, audio tags and portrait video.

Buy the Book Toaster See all Toasters
Designed around local processing. Your manuscripts, artwork, music and video stay on your machine wherever the browser can handle the job.

The Toasters

Small tools · fixed jobs · clean exports
Publishing / Interior
📖

Book
Toaster

Turn DOCX, Markdown or TXT manuscripts into KDP-ready print interiors and EPUBs.

Chapter detection Print PDF export EPUB export
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Publishing / Cover
📕

Cover
Toaster

Drop front, back and spine art into a calculated KDP wraparound cover.

Spine calculation Bleed and safe guides Cover PDF export
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Publishing / Activity Books
🎨

Colouring
Book Toaster

Batch-process colouring pages, build a KDP interior and generate the matching cover.

Image batch prep Blank reverse pages Integrated cover builder
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Recordings / Metadata
🔊

Tag
Toaster

Inspect, strip or inject clean metadata for audio release files before distribution.

Strip mode Inject mode Artist presets
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Video / Social
🎬

Resize
Toaster

Convert landscape video into portrait-ready 9:16 clips while keeping the full frame.

16:9 → 9:16 Letterboxed output Batch conversion
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Why It Works

The same promise in every app
Product principle
Not an editor.
A finishing machine.

The Toasters exist for the annoying final stretch: formatting, resizing, tagging, compositing and exporting. Each tool stays narrow so the user never has to fight a general-purpose monster just to finish a release file.

01
Drop the thing inManuscript, artwork, page images, audio files or video clips.
02
Set the few things that matterTrim size, page count, output format, metadata or bar colour — no cockpit full of knobs.
03
Toast locallyThe browser does the work where possible, keeping the workflow quick and private.
04
Export something usefulPrint PDF, EPUB, cover PDF, tagged audio or portrait video. Actual deliverables, not vibes.