#tools

Paste any regex get plain-English explanation

Edit, annotate, merge, split, compress PDFs in-browser

Build cURL commands visually

Generate CSP headers visually

Generate HMAC-SHA256/512 signatures

Generate RSA key pairs 2048/4096-bit

Generate RSA SSH key pairs in-browser

Generate nginx server block configs

Generate .htaccess rules

Look up IP address details

Calculate network address from CIDR

Calculate Unix file permissions

Convert length, weight, area, volume, speed, time

Convert Celsius, Fahrenheit, Kelvin

Calculate percentages and changes

Repeat text N times with separator

Convert between bytes, KB, MB, GB, TB

Count words, chars, sentences, reading time

Convert text between camelCase, snake_case etc

Look up MIME types by file extension