FastMinify — Free Client-Side Developer Toolbox (165+ Tools)

#minify #devtool #privacy #nextjs

I built FastMinify, a free, privacy-first developer toolbox that runs entirely in your browser — paste, upload, copy. No signup, and your code never leaves your device.

What started as a JS/CSS minifier has grown into 165+ tools across minify, beautify, unminify, format, validate, convert, and everyday dev utilities.

Highlights:

Minify family — JS, CSS, HTML, JSON, XML, SVG, YAML, TOML, SQL, and more
Three compression levels (Conservative / Normal / Aggressive) on minify tools
ES5 → ES2022 output targets for JavaScript minification
50+ format converters — JSON ↔ YAML/XML/CSV/TOML/Properties/INI, Markdown, SQL, and more
Validate & lint — JSON Schema, OpenAPI, GraphQL SDL, Docker Compose, .env, Kubernetes manifests, NDJSON logs…
DevOps & infra — Terraform/HCL, Dockerfile, GitHub Actions, GitLab CI
Security & tokens — JWT encode/decode/verify, JWKS inspect, PEM/JWK, secret scanning, bcrypt
Developer utilities — UUID/ULID/Nanoid, cron parser, regex tester, password generator, text diff, subnet calculator…
Monaco editor on minify and converter pages — syntax highlighting, keyboard shortcuts (⌘K site search, ? cheatsheet)
100% client-side — no server-side processing of your input
UI in English, French, and German
Installable PWA — use FastMinify like a desktop app, even offline for many tools.