AdPromptCreek1,000+ Free AI Prompts & SkillsTry PromptCreek
Back to Tools
Omatsuri

Open source browser tools for everyday tasks.

Omatsuri screenshot
Category:Design Tools
Subcategory:Useful Tools
Pricing:Free

What it costs

Free tier
Yes

Open-source collection of everyday browser tools, free to use.

Auto-checked on 8 August 2026Source

About Omatsuri

What Is Omatsuri?

Omatsuri is an open source progressive web application that provides 12 browser-based tools for frontend development tasks. Designed as a collection of utilities for everyday use in the design-tools category, Omatsuri runs entirely in the browser with full offline support and is available for free. It fits into design workflows by offering quick access to generators and converters without requiring installations or external services, emphasizing privacy through no tracking, ads, or server connections.

What Omatsuri Does

  • Generates CSS triangles using a dedicated triangle generator.
  • Creates color shades from input colors via the color shades generator.
  • Produces linear and radial gradients with a gradient generator.
  • Designs page dividers for web layouts.
  • Compresses SVG files to reduce size.
  • Converts SVG code to JSX format for React components.
  • Encodes content to Base64.
  • Generates realistic fake data for testing purposes.
  • Provides a collection of HTML and CSS symbols.
  • Offers ipsum text generators including Lorem, Samuel, and Poke variants.
  • Displays CSS cursor properties.
  • Lists JavaScript events keycodes for reference.

How Omatsuri Can Be Used

  • Frontend developers use the CSS triangle generator and gradient generator during UI prototyping to create custom shapes and backgrounds without leaving the browser.
  • Designers apply the color shades generator and page dividers generator to build cohesive color schemes and section separators in web projects.
  • Teams compress SVGs and convert them to JSX for optimized icon integration in React applications.
  • Developers encode assets to Base64 for inline embedding in stylesheets or generate fake data to populate prototypes and test forms.
  • Workflows incorporate the symbols collection, ipsum generators, cursor properties, and keycodes references for rapid reference during coding sessions.

Who Is Omatsuri For?

Omatsuri serves frontend developers, UI/UX designers, and web teams handling repetitive browser-based tasks in design and development workflows. It suits users at various experience levels who need offline, privacy-focused utilities for CSS generation, SVG handling, data mocking, and reference tools without complex setups. Those working on progressive web apps or open source projects find its all-in-one structure efficient for daily tasks. Visit Omatsuri

Learn Design Terms

New to Design?

Explore our comprehensive design glossary to master essential terminology from A/B Testing to Wireframes.

Browse Glossary

Looking for something specific?

Search through our entire collection of design tools and resources

AdPromptCreek1,000+ Free AI Prompts & Skills