Web & Dev Tools
Developer and web utilities for everyday tasks. Decode JWTs, test regex, generate meta tags, minify code, parse user agents, and more.
Hash Verifier — Check SHA-256, MD5 & More
Verify a file's integrity by checking its hash against an expected checksum. Supports SHA-256, SHA-1, MD5, and more. Runs in your browser — nothing uploaded. Free.
JWT Decoder
Paste a JSON Web Token to decode and inspect its header, payload, and expiry — entirely in your browser.
Regex Tester
Test regular expressions against a string with live match highlighting, flag toggles, and a match details table.
Meta Tag Generator
Generate SEO and social meta tags — standard, Open Graph, and Twitter/X Card — and copy the ready-to-paste HTML.
Open Graph Preview
Preview how your page will look when shared on Facebook, LinkedIn, and Twitter/X. No URL fetch needed.
Robots.txt Generator
Build a robots.txt file visually. Add user-agent rules, Allow/Disallow paths, crawl-delay, and sitemap URL.
Sitemap.xml Generator
Create a valid XML sitemap by adding URLs with lastmod, changefreq, and priority. Download or copy the output.
HTML Minifier
Minify HTML by removing comments and collapsing whitespace. Shows exact bytes saved and compression percentage.
CSS Minifier
Minify CSS by stripping comments and collapsing whitespace. Shows bytes saved and compression percentage.
JS Minifier
Minify JavaScript by removing comments and collapsing whitespace. Shows bytes saved and compression ratio.
User Agent Parser
Parse any User-Agent string to extract browser, engine, OS, and device type. Pre-fills with your own browser's UA.
UTM Builder
Build UTM-tagged URLs for campaign tracking. Set source, medium, campaign name, term, and content — with preset chips for common values.
.gitignore Generator
Build a .gitignore file by selecting languages, frameworks, editors, and operating systems. Combines templates and removes duplicates.
CSS Specificity Calculator
Parse CSS selectors and instantly see their (a, b, c) specificity scores with a visual breakdown and side-by-side comparison.
Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text or files.
Password Generator
Generate strong, random passwords with custom length, character sets, and bulk generation.
Cron Expression Builder
Build and validate cron expressions visually with a human-readable description and next run times.
Diff Checker
Compare two blocks of text side-by-side and highlight added, removed, and unchanged lines.
CSS Unit Converter
Convert between CSS units — px, rem, em, vw, vh, pt, cm, and more — with configurable context.
Favicon Generator
Upload an image and generate favicon PNG files in all standard sizes with the HTML snippet to match.