What's New on DevUtil
DevUtil is growing into a full privacy-first toolbox for everyday developer work. Share this page when launching on Product Hunt, Reddit, Indie Hackers, or with your team.
HTTP status codes, ENV validator, semver
- HTTP Status Codes — searchable reference for 200/404/429/502 and more
- ENV File Validator — lint .env files, catch duplicate keys, export JSON (client-side)
- Semver Calculator — test ^ / ~ / comparator ranges against a version
JWT verify/sign + chmod calculator
- JWT tool now verifies HS256/384/512 and can sign/generate tokens client-side
- New chmod Calculator for Unix permissions (755, 644, presets, symbolic + command)
New high-demand tools
- SQL Formatter, XML Formatter, YAML ↔ JSON Converter
- Cron Generator, Case Converter, HTML Entity Encoder
- Markdown Preview, Number Base Converter, JSON ↔ CSV Converter
- UUID Generator now supports v4 and time-ordered v7 (bulk up to 500)
Guides for search & learning
- How to format JSON online safely
- How to format SQL online
- Cron expression examples
- YAML vs JSON — when to use each
Privacy-first analytics
- GA4 + Umami + Vercel Analytics for product insights
- Tool inputs are still never uploaded — only aggregate usage events
Share / launch links
Website: https://www.devutil.dev
GitHub: sachinkasana/devutil-dev
Tagline: Free privacy-first developer utilities — format, convert, encode, generate — 100% in your browser.