Utilo

Utilo

20+ dev tools that run 100% in your browser

Utilo is a free toolbox of 20+ everyday developer utilities that run entirely in your browser — your data never leaves your device. Format and convert JSON (YAML, CSV, TypeScript types), generate QR codes and barcodes, compress images to WebP/AVIF, decode JWTs, test regex, hash text, generate UUID/ULID and passwords, convert timestamps, colors, units, number bases and naming cases, diff text, preview Markdown and explain cron expressions. No sign-up, dark mode, ⌘K search, 10 languages.

Productivity · Development Tools · Privacy

Features

JSON formatter & converter (YAML, CSV, TypeScript types)
QR code & barcode generator
Image compression to WebP/AVIF
JWT decoder, regex tester, hash, UUID/ULID & password generators
Timestamp, color, unit, number-base and case converters
Text diff, Markdown preview, cron explainer
100% client-side via Web Workers: no uploads, no sign-up, 10 languages

Use Cases

Format or convert JSON while debugging APIs
Decode JWTs and test regex without sending data to a server
Compress images for the web before deploying
Generate QR codes, UUIDs and passwords on the fly

Commune

A shared home for builders to launch, connect, and grow

Comments

beself29

Hi Fazier! I'm the maker of Utilo. I kept pasting JSON, JWTs and snippets into random online tools and wondering where my data went, so I built a toolbox where everything runs 100% in your browser — nothing is uploaded. It has 20+ tools (JSON/YAML/TS conversion, QR & barcodes, image compression, JWT, regex, hashes, UUIDs, cron and more), in 10 languages, with no sign-up. Would love your feedback and tool requests!

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