Does The Designer's Knife work offline?
Yes. The Designer's Knife is a single HTML file that runs entirely in your browser. No internet connection required after download. Your data never leaves your device.
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The Designer's Knife
Nine design tools plus a live showroom — offline and always ready
Design & CreativeKnife 04 of 50
$39
One-time purchase · Instant download30-day money-back guarantee
$39
What it does
The Designer's Knife puts nine essential design utilities plus a live preview Showroom into a single HTML file. Convert between color formats, check WCAG contrast compliance, build harmonious palettes, generate CSS gradients (linear, radial, conic), edit Bézier curves visually, build typographic scales from modular ratios, calculate spacing systems (linear, powers, Fibonacci), paint pixel art on a grid, and preview everything together in the Showroom — a live component gallery that renders your design system as buttons, cards, and typography in real time. All offline, all private, all yours forever.
LIVE DEMO — TRY IT NOW
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INCLUDED TOOLS — 9 TOTAL
\Color Converter (HEX/RGB/HSL)
\WCAG Contrast Checker
\Palette Builder
\Gradient Generator
\Bézier Curve Editor
\Type Scale Builder
USE CASE 01\Brand Design System
\Spacing Calculator
\Pixel Grid Painter
\✦ The Showroom
USE CASE 02\Accessibility Audit
USE CASE 03\CSS Animation Design
USE CASE 04\Design Token Export
USER'S GUIDE
Download PDFFull documentation with detailed instructions for every tool.
DELIVERYSingle HTML fileDownload instantly after purchase
PRIVACY100% localYour data never leaves your machine
OWNERSHIPOne-time purchaseNo subscription, no recurring fees
PRO TIP
The file works in any modern browser — Chrome, Firefox, Safari, Edge. Save it to a USB drive, email it to yourself, or keep it in your cloud storage. It will work anywhere, anytime, forever.
Sovereignty as a Service
$39. Yours. Forever.
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OTHER PRODUCTSIs The Designer's Knife a subscription?
No. The Designer's Knife is a one-time purchase of $39. No monthly fees, no renewals, no price increases.
What is included in The Designer's Knife?
The Designer's Knife bundles 9 design & creative tools into a single HTML file: Color Converter (HEX/RGB/HSL), WCAG Contrast Checker, Palette Builder, Gradient Generator, Bézier Curve Editor, Type Scale Builder, and 3 more.
Where is my data stored?
Entirely in your browser's local storage. Nothing is uploaded, transmitted, or tracked. You can export your data as JSON at any time and import it on another device.
Which browsers and operating systems does The Designer's Knife support?
Any modern browser — Chrome, Firefox, Safari, Edge — on Windows, macOS, Linux, ChromeOS, iOS, or Android. The same file works everywhere.
Can I try The Designer's Knife before buying?
Yes. The interactive demo on this page is the full knife running in an iframe. Try every feature in your browser, no signup required.
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