⬡ Utilities · Free browser tools · No sign-up

Small tools.
Done right.

A focused set of everyday tools that load instantly and run entirely on your device — no accounts, no uploads, nothing sent to a server. Format JSON, convert units, decode tokens, build gradients, and more — twelve tools, each built to the same standard as the games.

12Tools
FreeAlways
0Sign-up
100%In-browser

Developer & encoding

4 tools
Developer

JSON Formatter

Format, validate, and minify JSON with syntax highlighting and line-level errors.
Format · Validate · Minify Open →
Encoding

Base64

Encode and decode Base64 — UTF-8 safe, with a URL-safe variant.
Encode · Decode Open →
Developer

Regex Tester

Test patterns live with match highlighting and capture groups.
Live · Capture groups Open →
Security

JWT Decoder

Decode a token's header and payload and check expiry. Decoding only — no verification.
Header · Payload · Expiry Open →

Converters & calculators

4 tools
Conversions

Unit Converter

Length, mass, temperature, volume, area, and speed — live, with a full breakdown.
6 categories Open →
Math

Percentage Calculator

Percent of a number, ratios, and percent change — three calculators in one.
3 calculators Open →
Finance

Loan Calculator

Monthly payment, total interest, and payoff from amount, rate, and term.
Amortized Open →
Design

Color Converter

Convert between HEX, RGB, and HSL with a live swatch and tints.
HEX · RGB · HSL Open →

Text & design

4 tools
Text

Text Counter

Live word, character, sentence, and paragraph counts with reading time.
Words · Chars · Reading time Open →
Text

Case Converter

Convert text to camelCase, snake_case, Title Case, and more.
9 cases Open →
Text

Text Diff

Compare two texts and see added and removed lines.
Line-by-line Open →
Design

Gradient Generator

Build a linear or radial CSS gradient and copy the code.
Linear · Radial Open →
Sponsored · In-feed
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Why these tools

Quality over quantity

They run on your device

Every tool is plain JavaScript in the page. Whatever you paste — JSON, text, numbers — stays in your browser. There's no upload, no account, and nothing logged.

  • No sign-up required
  • No data sent to a server
  • Works offline once loaded

They're built, not bulk-generated

This is a deliberately small set. Each tool does one job well, with real edge-case handling and a clean interface — rather than a hundred half-finished pages.

  • Exact conversion factors verified
  • Clear errors with line numbers
  • Live results as you type

They fit the rest of the site

Same look, same speed, same no-nonsense approach as the games. Load a page and it's ready — no spinners, no cookie walls, no waiting on a third party.

  • Instant load static files
  • Mobile friendly responsive
  • More tools coming
Everything here runs entirely in your browser. No file you open or text you paste is uploaded or stored. Clearing your browser data won't affect these tools — there's nothing saved server-side.