Workflows
Free Online Tools for Sysadmins & DevOps
Sysadmin work runs on small utilities you need at odd moments: a password file for a staging site, a cron expression you have to be certain about, a checksum to confirm a download. The catch is that these tasks involve credentials and production data, which is precisely what you should not be pasting into a stranger's web form. Everything here computes in your browser and transmits nothing.
20 tools in this kit — all browser-based, no signup required
Kit contents20 items
01htpasswd GeneratorGenerate an Apache or Nginx .htpasswd file with bcrypt hashes for multiple users. Runs in your browser — passwords are never transmitted.Generate an Apache or Nginx .htpasswd file with bcrypt hashes for multiple users. Runs in your browser — passwords are never transmitted.Security02bcrypt Generator & VerifierGenerate bcrypt password hashes with a configurable cost factor, or verify a password against an existing hash. Runs in your browser, nothing uploaded.Generate bcrypt password hashes with a configurable cost factor, or verify a password against an existing hash. Runs in your browser, nothing uploaded.Security03Cron Expression GeneratorTranslate cron expressions into plain English and preview the next five run times. Presets for common schedules. Free, runs in your browser.Translate cron expressions into plain English and preview the next five run times. Presets for common schedules. Free, runs in your browser.Developer04File Checksum VerifierCompute SHA-256, SHA-512, SHA-1 and CRC32 for any file and compare against an expected checksum. The file is hashed on your device, never uploaded.Compute SHA-256, SHA-512, SHA-1 and CRC32 for any file and compare against an expected checksum. The file is hashed on your device, never uploaded.Security05RSA & EC Key Pair GeneratorGenerate RSA or elliptic curve key pairs in PEM and JWK format using the Web Crypto API. Keys are created in your browser and never transmitted.Generate RSA or elliptic curve key pairs in PEM and JWK format using the Web Crypto API. Keys are created in your browser and never transmitted.Security06AES Text EncryptionEncrypt and decrypt text with AES-256-GCM and a passphrase. Runs entirely in your browser — neither the message nor the passphrase is ever transmitted.Encrypt and decrypt text with AES-256-GCM and a passphrase. Runs entirely in your browser — neither the message nor the passphrase is ever transmitted.Security07JWT Generator & SignerCreate and sign JSON Web Tokens with HS256, HS384 or HS512, including expiry, issuer and audience claims. Signed in your browser, nothing uploaded.Create and sign JSON Web Tokens with HS256, HS384 or HS512, including expiry, issuer and audience claims. Signed in your browser, nothing uploaded.Security08JWT DecoderDecode and inspect JWT tokens online for free. View header, payload, and signature claims with expiration validation. No signup required.Decode and inspect JWT tokens online for free. View header, payload, and signature claims with expiration validation. No signup required.Developer09Redirect GeneratorTurn a list of old and new URLs into 301 redirects for Apache, Nginx, Netlify or Vercel. Detects redirect chains and loops. Free, runs in your browser.Turn a list of old and new URLs into 301 redirects for Apache, Nginx, Netlify or Vercel. Detects redirect chains and loops. Free, runs in your browser.SEO10Robots.txt Generator & TesterGenerate a robots.txt file and test any URL against your rules. Shows exactly which rule wins, using Google's longest-match precedence. Free, no signup.Generate a robots.txt file and test any URL against your rules. Shows exactly which rule wins, using Google's longest-match precedence. Free, no signup.SEO11YAML / JSON ConverterConvert between YAML and JSON formats online for free. Parse YAML configs to JSON or generate YAML from JSON. No signup required.Convert between YAML and JSON formats online for free. Parse YAML configs to JSON or generate YAML from JSON. No signup required.Developer12JSON FormatterFormat, beautify, and validate JSON data online for free. Instantly prettify minified JSON with syntax highlighting and error detection. No signup required.Format, beautify, and validate JSON data online for free. Instantly prettify minified JSON with syntax highlighting and error detection. No signup required.Developer13XML FormatterFormat or minify XML without losing comments, CDATA or attribute order. Only whitespace changes. Free, runs in your browser.Format or minify XML without losing comments, CDATA or attribute order. Only whitespace changes. Free, runs in your browser.Developer14Unix Timestamp ConverterConvert Unix timestamps to human-readable dates and back online for free. Supports seconds and milliseconds, local time and UTC. No signup required.Convert Unix timestamps to human-readable dates and back online for free. Supports seconds and milliseconds, local time and UTC. No signup required.Developer15Number Base ConverterConvert numbers between binary, octal, decimal, and hexadecimal online for free. Instant conversion across all bases at once. No signup required.Convert numbers between binary, octal, decimal, and hexadecimal online for free. Instant conversion across all bases at once. No signup required.Developer16Text Diff CheckerCompare two texts online for free with line-by-line diff highlighting. Spot added and removed lines instantly in your browser. No signup required.Compare two texts online for free with line-by-line diff highlighting. Spot added and removed lines instantly in your browser. No signup required.Developer17Passphrase GeneratorGenerate secure, memorable word-based passphrases online for free. Choose word count, separators, and numbers — XKCD style. No signup required.Generate secure, memorable word-based passphrases online for free. Choose word count, separators, and numbers — XKCD style. No signup required.Security18Password GeneratorGenerate strong, random passwords online for free. Customize length, character types, and security level for maximum protection. No signup required.Generate strong, random passwords online for free. Customize length, character types, and security level for maximum protection. No signup required.Security19SHA-512 Hash GeneratorGenerate SHA-512 and SHA-384 hashes online for free using the Web Crypto API. Hash text instantly in your browser. No uploads, no signup required.Generate SHA-512 and SHA-384 hashes online for free using the Web Crypto API. Hash text instantly in your browser. No uploads, no signup required.Security20HMAC GeneratorGenerate HMAC-SHA256 and HMAC-SHA512 signatures from a secret key and message online for free. Runs via Web Crypto in your browser. No signup required.Generate HMAC-SHA256 and HMAC-SHA512 signatures from a secret key and message online for free. Runs via Web Crypto in your browser. No signup required.Security
The full toolkit
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