About codefunc
Developer tools that stay on your device
codefunc is a free utility hub for everyday engineering work — formatting, encoding, converting, generating, parsing, minifying, and CSS prototyping. Operated by codefunc.
100% client-side — input never leaves your browserWhat we build
97 static tool pages cover the formats and workflows developers hit weekly: JSON and JWT debugging, cron schedules, CORS and CSP headers, regex tests, meta tags, and CSS builders. Each page includes how-to steps, a worked example, limitations, and FAQ so you can learn from the page even before you paste input.
Privacy by design
Tool logic runs in your browser with JavaScript. There is no signup, no upload API, and no server-side processing of what you paste. Analytics (when enabled) and advertising partners may use cookies under their own policies — see our Privacy Policy.
Categories
- Formatters & Validators — Format, beautify, and validate JSON, YAML, TOML, CSV, XML, SQL, HTML, CSS, and Markdown.
- Encoders & Crypto — Encode and decode Base64, URL, HTML entities, JWT tokens, hashes, UUIDs, and passwords.
- Converters — Convert timestamps, timezones, colors, number bases, byte sizes, and cron expressions.
- Generators — Generate lorem ipsum, cron schedules, fake test data, QR codes, gitignore files, and env templates.
- Parsers & Inspectors — Parse HTTP headers, cookies, user agents, meta tags, regex, XPath, robots.txt, and sitemaps.
- Minifiers & Text — Minify HTML, CSS, and JavaScript. Convert text case, sort lines, and count words.
- Web & API — Generate CORS and CSP headers, lookup HTTP status codes, OpenAPI snippets, and curl commands.
- CSS & Design — Build CSS animations, transitions, easing curves, box shadows, gradients, flexbox layouts, and clamp values with live preview.
Guides and contact
Longer walkthroughs live on the blog. For privacy requests, feedback, or product questions, see Contact or email contact@codefunc.com.