Browser-based developer utilities for everyday coding tasks. Format JSON, test regex, decode JWTs, minify code, generate sitemaps, and more. Everything runs locally in your browser with zero data collection.
Toggle Unix file permissions and get chmod values.
Build cron expressions from dropdowns and preview run times.
Translate cron expressions into readable schedules.
Minify CSS by removing comments and whitespace.
Convert pasted CSV into a JSON array locally.
Paste or upload CSV data and preview it as a table.
Compare two JSON values and list differences.
Format and validate JSON locally in your browser.
Extract values from JSON using dot notation.
Minify JavaScript by removing comments and whitespace.
Generate signed HS256 JWTs locally.
Decode JWT header and payload claims.
Encode and decode HTML entities.
Build an outline from HTML headings.
Minify HTML locally.
Generate HTML table code from editable rows.
Generate .htaccess rules for redirects and security.
Build HTTP headers from key-value pairs.
Look up HTTP status codes by group.
Cluster keywords into related topic groups.
Generate SEO meta tags.
Look up file extensions and MIME types.
Generate OG and Twitter card tags.
Build a validated redirect map.
Test common web regex patterns.
Test regular expressions locally.
Test regex with patterns and reference help.
Generate robots.txt from rules and sitemaps.
Generate SHA-256 and MD5 hashes from text.
Generate sitemap.xml from URLs.
Format SQL queries with readable line breaks.
Parse, inspect, and rebuild URLs.
Build campaign URLs with UTM parameters.
Format XML with indentation and validate structure.
Convert YAML and JSON data.
Batch processing for 100+ files at once. No ads. Export history. Priority support.
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