Offline tools that just work

Five free, self-contained tools for designers and developers. Create social cards, generate OG images, extract color palettes, build CSS gradients, and make device mockups. No account, no cloud, no tracking.

See the tools
Browser tool

SnapCard

Design branded 1200×630 social cards in your browser. 15 editorial templates, live preview, PNG export. One file, fully offline.

  • 15 templates — tech, startup, editorial, minimal
  • Canvas 2D rendering — no server, no upload
  • 114 KB single HTML file
  • Works in any modern browser
Open SnapCard
Terminal tool

SnapOG

Generate 1200×630 Open Graph images from the command line. One command, custom text, instant PNG. For developers who ship.

  • satori + resvg — sharp, text-perfect renders
  • CLI + programmatic API
  • 6.2 KB install package
  • Node.js 18+ required
Download SnapOG
Browser tool

SnapPalette

Drop any image and get a perfect color palette. Median-cut extraction, color harmonies, one-click copy. Export as CSS, Tailwind, SCSS, or JSON.

  • Median-cut algorithm — fast, accurate colors
  • Harmony detection — complementary, triadic, analogous
  • 24 KB single HTML file
  • Paste, drag & drop, or browse
Open SnapPalette
Browser tool

SnapGradient

Stack color stops, set the angle, watch the live preview, and export CSS. Harmony-ready presets, linear or radial. One file, fully offline.

  • Any number of color stops with position control
  • Live preview + angle & shape control
  • Export as CSS or JSON, one-click copy
  • 17 KB single HTML file
Open SnapGradient
Browser tool

SnapMockup

Drop a screenshot, pick a device frame, export a crisp PNG. iPhone, MacBook, iPad, iMac, Apple Watch. Fully offline.

  • 6 device frames — iPhone 15, Pro, MacBook, iPad, iMac, Watch
  • Canvas 2D rendering — no upload, no server
  • 24 KB single HTML file
  • Retina export up to 3x, custom backgrounds
Open SnapMockup

Why offline?

Most tools want your data, your login, your subscription. These don't. They run where you run — in your browser, in your terminal. No middleman, no expiry date, no fine print.

No account No cloud No tracking Open source Tiny footprint