Tools & Dev
Beautify, unminify, build tools and FastMinify developer utilities — daily workflows in the browser.
Subnet Calculator: Compute a CIDR, Summarize Ranges and Check an IP
Compute network, mask, host range and broadcast of a CIDR, summarize ranges into minimal blocks and check an IP, all in your browser. Nothing is uploaded.
Inspect an HTTP Request: curl, Raw Messages and HAR Files
Format a Copy as cURL, parse a raw HTTP request or response and read a HAR export in your browser: nothing is sent, nothing is replayed.
Secure Password Generator Online: 2026 Best Practices
Length, entropy, symbols: generate a strong password in your browser with Web Crypto, no network transit, and know what the tool does not guarantee.
Online Regex Tester: A Practical Guide to Debugging Regular Expressions
Test a JavaScript regex, inspect capture groups, and preview a $1 replace in the browser before the pattern lands in production code.
UUID vs ULID vs Nanoid: Which Unique ID Should You Use?
Random UUID v4, sortable UUID v7 and ULID, or compact customizable Nanoid: a comparison and online generators for primary keys, public IDs and tokens.
Hash and HMAC Generator: MD5, SHA-256, SHA-512 Online
Compute an MD5 or SHA digest, or sign a message with HMAC, in the browser. Hex, Base64 or Base64URL — text checksums and webhook signatures, 100% local.
Base64 Encode/Decode: Text, Files and Images Online
Encode or decode text, a file, or an image as Base64 in the browser — data URIs, email attachments, JWT segments. 100% local, not encryption.
Compile SCSS and LESS to CSS Online, No Build Tool Required
Compile SCSS or LESS snippets (variables, nesting, mixins) to CSS in the browser without npm run build — for reviews, snippets, or a machine without Node.
Check WCAG Color Contrast Online: AA, AAA and Large Text
Insufficient text-to-background contrast is the most common accessibility failure on the web. Check AA/AAA compliance by pasting two colors, no plugin or extension required.