Free Utilities

The junk drawer, organized: password generator, countdown timer, stopwatch, timezone converter, color picker, random number generator, base64 encoder, invoice generator, unix timestamp converter, metronome, and an image compressor and printer. Quick, free, no sign-up.

Live

Password Generator

Strong, random passwords on demand.

Open tool → Live

Countdown Timer

Count down to exams, deadlines, events.

Open tool → Live

Time Zone Converter

Convert times across zones; plan meetings.

Open tool → Live

Color Picker

Hex/RGB/HSL converter, palettes, contrast checker.

Open tool → Live

Random Number Generator

Random numbers, dice, coin flip, shuffler.

Open tool → Live

Stopwatch

Precision stopwatch with lap times.

Open tool → Live

Base64 Encoder

Encode and decode Base64, URL-safe too.

Open tool → Live

Invoice Generator

Professional invoices with tax, discounts, print.

Open tool → Live

Unix Timestamp Converter

Convert timestamps to dates and back.

Open tool → Live

Metronome

Steady beats with tap tempo, 30-240 BPM.

Open tool → Live

Full-Page Image Printer

Print images full-page, straight from your browser.

Open tool → Live

Image Compressor

Shrink image files in your browser — nothing uploaded.

Open tool → Live

Text Diff Checker

Compare two texts with line and word-level highlights.

Open tool →

Related categories

Text & Files Time & Date Dev & Web

More from the codex

Live

Browse all categories

Every category on the codex, from study tools to ciphers — pick your starting point.

Browse → Live

Prompt Simulator

Practice prompt engineering: write prompts, get scored 0–10.

Open tool → Live

GPA Calculator

Semester and cumulative GPA with weighted scales and a target planner.

Open tool →

About these utilities

Every tool below is free, works in your browser, and needs no account.

Is the password generator safe?
It uses your browser's cryptographic random number generator — passwords are created locally and never transmitted.
Can I use the invoice generator for my business?
Yes — it builds clean, printable invoices in your browser. It's a client-side tool, so keep your own copies of what you send.
Do any utilities need an account?
None. Like everything on the codex, they're free and account-free.