JWT Decoder
Decode JWT tokens instantly and inspect the header, payload, claims, signature details, and expiration time in a readable format.
Open ToolDeveloper tools
Tools
Slug Generator
Turn any title or phrase into a clean, SEO-friendly URL slug. Accents, symbols, and optional stop words are handled locally in your browser.
Open ToolPassphrase Generator
Generate strong, memorable passphrases from the EFF diceware wordlist. Pick your word count and separator. Runs offline — nothing is ever transmitted.
Open ToolCron Expression Generator
Build cron expressions visually and preview the next run times instantly. Supports standard crontab, Quartz, Spring and AWS syntax. Free, with no sign-up.
Open ToolYAML ↔ JSON Converter
Convert YAML to JSON and JSON to YAML instantly, with validation and error highlighting. Works with Kubernetes, OpenAPI and Docker Compose files.
Open ToolUUID Generator
Generate random UUID v4, v1 and v7 identifiers in bulk, up to 1,000 at a time. Copy or download instantly in your browser.
Open ToolEpoch Converter
Convert Unix timestamps to readable dates and back, in seconds or milliseconds. Live clock, timezones, and code snippets.
Open ToolBase64 Encoder & Decoder
Encode and decode Base64 strings, files and images instantly. Supports base64url and data URIs in your browser.
Open ToolHex to RGB Converter
Convert hex colour codes to RGB, RGBA, HSL and CMYK instantly with a live preview swatch and code snippets.
Open ToolCSV ↔ JSON Converter
Convert CSV to JSON and JSON to CSV instantly. Custom delimiters, headers, quoted fields, and nested object flattening.
Open ToolHTML Minifier
Minify HTML to cut page weight. Strip comments, collapse whitespace, and review before-and-after size — free in your browser.
Open ToolCase Converter
Convert text between uppercase, lowercase, sentence case, title case, camelCase, and snake_case. Supports AP and Chicago title style.
Open ToolJSON Formatter & Validator
Format, validate and beautify JSON with a collapsible tree view and line/column error reporting. Free, private, no sign-up.
Open ToolMarkdown to HTML Converter
Convert Markdown to clean HTML with a live side-by-side preview. Supports GFM, tables, and code highlighting.
Open ToolXML Formatter Online
Format, indent and validate XML with error highlighting and a collapsible tree view. Works with SOAP, RSS, and sitemaps.
Open ToolDiff Checker
Compare text or code side by side with line and character highlighting. Ignore whitespace or case. Free and private.
Open ToolBinary to Decimal Converter
Convert between binary, decimal, hex, and octal with step-by-step working. Supports signed values and bit widths.
Open ToolRegex Tester
Test regular expressions live with match highlighting, capture groups, and plain-English explanations.
Open ToolASCII Table
Complete ASCII chart with decimal, hex, binary, and octal values—plus extended ASCII. Searchable and printable.
Open ToolCSS Minifier
Minify CSS online—strip comments and whitespace, collapse shorthand, shorten colors, and see bytes saved.
Open Tool