FastMinify

FastMinify is a privacy-first developer toolbox with 170+ free online tools that run entirely in your browser. What began as a focused minifier has grown into a full platform for formatting, validating, converting, encoding, and optimizing code — without sending your data to any server. Every tool processes input locally. Paste JavaScript, CSS, JSON, YAML, Terraform, Dockerfiles, OpenAPI specs, Kubernetes manifests, or any other snippet and get instant results. Nothing is uploaded — ideal for proprietary code, API keys, tokens, and production configs you would not trust to a remote SaaS. Minification remains the foundation: compress JS, CSS, JSON, HTML, XML, SVG, SQL, YAML, TOML, and more for lighter assets and better Core Web Vitals. Beautify and unminify when you need readable output again. Beyond minify, explore tools organized by intent: • Format converters — JSON, YAML, XML, CSV, TOML, INI, SQL, HTML, Markdown • JSON — validate, format, diff, merge, escape, tree view • Encoding & security — Base64, URL, HTML entities, bcrypt, JWT decode, hashes • SVG — optimize, minify, convert vector graphics • DevOps & infra — Terraform HCL, Dockerfiles, .env files, Nginx configs • Kubernetes — YAML format, validate, generate Ingress/Deployment manifests • API & schemas — OpenAPI lint, validate, format, JSON Schema conversion • CI/CD — GitHub Actions, GitLab CI, Azure Pipelines YAML helpers • Developer utilities — UUID, cron, regex, timestamps, slugify, password, diff • Text & Markdown — word counter, TOC generator, table converter, line sort The interface features a Monaco-based editor (same engine as VS Code), syntax highlighting, configurable options per tool, copy/download, dark mode, and a searchable tools hub. Available in English, French, and German. Installable as a PWA. No account required. Whether you are shrinking assets for production, converting configs before deploy, or validating OpenAPI in a PR — FastMinify is free and your code stays on your machine.