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UtilityStacks

Your everyday stack of useful tools.

Fast, private tools for code, work and everyday life.

Most tools run in your browser and never upload your data.

Shortcut: Ctrl/Cmd + K

Popular tools

Showing all developer tools, Wheel of Names, and one representative from each remaining category until GA4 sufficiency thresholds are met.

Browse all
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Wheel of Names

Spin a wheel to pick a winner randomly from your list.

Random

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JSON Formatter

Format or minify JSON instantly in your browser.

Developer

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JSON Validator

Validate JSON and see clear error details.

Developer

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Percentage Calculator

Solve common percentage calculations quickly.

Calculators

⏱→

Pomodoro Timer

Stay focused with a simple work/break timer.

Productivity

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JWT Encoder & Builder

Build JWTs from header and payload JSON, with optional local HMAC signing.

Developer

Aa→

Word Counter

Count words, characters, and reading time.

Text

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LINQ to SQL Converter

Convert common LINQ query patterns into SQL drafts.

Developer

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UUID Generator

Generate and customize UUID values with selectable versions.

Developer

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SQL to LINQ Converter

Convert common SQL query patterns into LINQ method syntax drafts.

Developer

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JWT Decoder

Decode JWT header and payload safely in your browser.

Developer

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Password Generator

Generate strong passwords with secure randomness.

Security

Explore & Discover

Interactive weather and astronomy cards. One explorer is shown at a time for cleaner focus.

Showing 1 of 3: World Weather Explorer

World Weather Explorer

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Loading weather explorer...

Developer references

Fast links to standards and API docs that map directly to the tooling on this site.

JSON syntax and parsing

Understand strict JSON format rules and parser behavior before validating API payloads.

JWT structure and claims

Review compact token format and claim semantics when building authentication diagnostics.

Why UtilityStacks

  • Focused tools with direct utility for daily engineering and team workflows.
  • Most interactions are browser-local to minimize data handling risk.
  • Code-oriented sections map each tool operation to practical programming APIs.
  • Small, fast pages that remain useful even when external services are unavailable.

Find tools by category

Developer

Format, validate, and inspect technical data like JSON, JWTs, and UUIDs.

Random

Run fair picks for classrooms, games, giveaways, and team decision making.

Text

Get live writing metrics such as words, characters, and reading time.

Calculators

Solve practical percentage calculations with clear formulas and examples.

Productivity

Stay focused with simple browser-first timing tools.

Security

Generate strong credentials and review sensitive data handling carefully.

Quick starts

Jump directly into common workflows:

Format API payloads with JSON FormatterInspect auth tokens with JWT DecoderRun fair draws with Wheel of NamesGenerate strong credentials with Password Generator

FAQ

Do tools upload my data?

Most tools process content in your browser. Avoid pasting production secrets into any web form.

How are Popular Tools chosen?

When enough aggregate GA4 usage data exists, the list reflects top tool-use events from the last six months. Otherwise it shows all developer tools, Wheel of Names, and one representative from each remaining category.

Can I find all tools if popularity data is unavailable?

Yes. Category pages and search still expose the full catalog even when the home popularity module runs in fallback mode.

Related tools

JSON FormatterFormat or minify JSON instantly in your browser.JSON ValidatorValidate JSON and see clear error details.JWT Encoder & BuilderBuild JWTs from header and payload JSON, with optional local HMAC signing.JWT DecoderDecode JWT header and payload safely in your browser.LINQ to SQL ConverterConvert common LINQ query patterns into SQL drafts.SQL to LINQ ConverterConvert common SQL query patterns into LINQ method syntax drafts.