Text & Developer Tools Tools

Word & Character Counter

Count words, characters with and without spaces, sentences, paragraphs, and lines, plus reading time.

JSON Formatter & Validator

Validate, pretty-print, and minify JSON with configurable indentation and clear syntax errors.

Code Formatter

Format or minify HTML, XML, CSS, and SQL with predictable indentation.

CSS Effects Generator

Build CSS gradients and box shadows with live previews and copy-ready declarations.

URL Encoder & Decoder

Encode or decode URL components, query parameter values, and full URLs as text with mode-aware rules.

Base64 Encoder & Decoder

Encode UTF-8 text to standard Base64 and decode Base64 back to validated UTF-8 text.

Text Diff Tool

Compare two texts line by line with unified and side-by-side views and optional normalization.

Slug Generator

Turn titles into lowercase, punctuation-free URL slugs with hyphen or underscore separators.

Password Generator

Create strong random passwords with configurable length and character sets, entirely in your browser.

UUID Generator

Generate one or many random UUID v4 identifiers in your browser.

Hash Generator

Compute SHA hashes, HMAC signatures, and CRC32 checksums from text or files with WebCrypto.

Regex Tester

Test regular expressions live with matches, capture groups, and replacement preview.

JSON CSV Converter

Convert between JSON arrays and CSV with selectable delimiters.

Markdown Preview

Write Markdown and preview the rendered HTML live, with raw HTML escaped for safety.

Excel IF Formula Generator

Turn grade bands into a nested IF or IFS formula for Excel and Google Sheets, with a comma or semicolon separator.

Cron Expression Builder

Build a five-field cron expression, validate it, and preview the next runs in your local timezone.

JWT Decoder

Decode a JWT header and payload, inspect registered claims, and check expiry without sending the token anywhere.

JSON to TypeScript

Generate TypeScript interfaces and type aliases from JSON, including nested objects and arrays.

Case Converter

Convert text to nine common cases with optional diacritic and whitespace cleanup.

Color Contrast Checker

Check WCAG contrast, preview text sizes, and suggest an accessible foreground color.

Markdown Table Generator

Build a Markdown table with editable rows, columns, and alignment, then copy the result.

YAML JSON Converter

Convert YAML to JSON and JSON to YAML locally with clear parse errors.

Subnet Calculator

Calculate IPv4 network, broadcast, host range, and split CIDR blocks locally.

TOTP Generator

Generate time-based authenticator codes from a Base32 secret without an account.

Meta Tag Preview

Build canonical, Open Graph, and Twitter Card tags with a live social preview.

SEO Tags & Robots Generator

Build UTM links, JSON-LD schema, and robots.txt directives without leaving the browser.

Text Cleanup

Trim, deduplicate, filter, and sort pasted lines in one local pass.