All Tools

Format, validate and minify JSON with syntax highlighting.

Convert between JSON and YAML instantly — two-way.

Convert JSON arrays to CSV and CSV back to JSON.

Escape special characters for JSON strings and unescape them back.

Paste JSON and auto-generate a JSON Schema (Draft 2020-12).

Format, validate and minify XML documents.

Prettify and minify HTML markup.

Format SQL queries for MySQL, PostgreSQL, SQLite, T-SQL and BigQuery.

Format and minify GraphQL queries, mutations, subscriptions, fragments and schema definitions.

Encode text or files to Base64 and decode Base64 strings.

Encode and decode URL components and full URLs.

Encode and decode HTML entities with a reference table.

Convert between TOML and JSON formats — two-way.

Compare two JSON values and see a structured, semantic difference report.

Generate UUID v1–v7 and ULID identifiers in bulk.

Generate strong, secure passwords with custom rules and strength meter.

Generate Lorem Ipsum words, sentences, paragraphs or JSON arrays.

Generate fake names, emails, addresses, UUIDs and more as JSON or CSV.

Define a schema and generate realistic mock JSON data.

Generate QR codes for URLs, text and more — customise colors and download.

Upload an image or enter text/initials to generate favicons in all sizes.

Parse cron expressions into plain English and preview next run times.

Validate .env files for syntax errors, weak secrets and missing values.

Generate .gitignore files for Node, Python, Java, Go, Rust and more.

Generate SEO meta tags and Open Graph / Twitter Card markup with a live preview.

Build a robots.txt file with per-bot rules, sitemap and crawl-delay.

Generate .htaccess rules for HTTPS redirects, www handling, caching and more.

Generate placeholder images as SVG data URLs with custom size, colors and text.

Generate live TOTP (RFC 6238) codes from a Base32 secret — the algorithm behind Google Authenticator.

Decode and inspect JSON Web Tokens — header, payload, signature.

Build and sign JWT tokens with custom claims and HMAC secrets.

Generate MD5, SHA-1, SHA-256, SHA-512 hashes from text.

Hash passwords with bcrypt and verify hashes — configurable salt rounds.

Encrypt and decrypt text with AES, DES, TripleDES and more — browser-only.

Build a Content-Security-Policy header by configuring each directive.

Compute and verify SHA-1, SHA-256, SHA-384 and SHA-512 hashes of any file.

Generate RSA public/private key pairs (PEM format) entirely in your browser.

Test regular expressions with live match highlighting, group capture, and a library of common patterns like email, URL, phone and more.

Convert times across multiple time zones with a live world clock.

Convert cURL commands to JavaScript, Python, Go, PHP, Ruby, Java, C#, Swift, C++, Rust and more.

Parse a User-Agent string into browser, engine, OS and device details.

Calculate network address, broadcast, netmask and host ranges from CIDR.

Convert any title or phrase into a URL-safe slug, snake_case or dot.case.

Convert strings between camelCase, snake_case, kebab-case, PascalCase and more.

Compare two texts side-by-side with char, word and line-level diff.

Count words, characters, sentences and get reading time and top words.

Live Markdown preview with GFM support, tables, code blocks and HTML output.

Sort, deduplicate, reverse, shuffle, trim and number lines of text.

Search emoji by name or keyword and copy them with one click.

View text as UTF-8, UTF-16, ASCII or Latin-1 bytes in hex, binary or decimal.

Convert Unix timestamps to human-readable dates and vice versa.

Calculate Unix file permissions visually — numeric and symbolic modes.

Convert between binary, octal, decimal and hexadecimal with bit display.

Perform AND, OR, XOR, NOT, left shift and right shift operations.

Convert between bits, bytes, KB, MB, GB, TB and their binary (KiB, MiB) equivalents.

Convert length, weight, temperature, data size and speed units.

Convert numbers to Roman numerals and back.

Calculate the exact difference between two dates in days, weeks, months and years.

Calculate percentages, percentage of a value, and percentage change.

Check if a number is prime, find prime factors, generate primes in a range, and find the Nth prime.

Convert between HEX, RGB, HSL, HSV, and nearest Tailwind color class.

Build linear, radial and conic CSS gradients visually with multi-stop support.

Build CSS box shadows visually with layered shadow support.

Check WCAG color contrast ratios for accessible text and backgrounds.

Visually build and preview CSS flexbox layouts, then copy the code.

Build CSS animations visually with multiple keyframe steps and a live preview.

Visually design CSS border-radius shapes and blobs with live preview.

Complete reference of all HTTP status codes — searchable with descriptions.

Searchable lookup of file extensions and their MIME / content types.

Searchable list of well-known network ports and the services that use them.

Searchable reference of CIDR prefixes, subnet masks, host counts and private IP ranges.

Searchable reference of common HTTP request and response headers and what they do.

Searchable reference of HTTP request methods (GET, POST, PUT, DELETE…) with safety, idempotency and caching notes.

Searchable reference of common Unix/Linux shell exit codes, signals, and BSD sysexits.

Searchable reference of ISO country codes, calling codes and ISO currency codes.

Searchable reference of common Git commands for branching, undoing, stashing and more.

Searchable reference of common Linux/Unix shell commands grouped by task.

Searchable reference of common Docker and Docker Compose commands for images, containers, volumes and networks.

Searchable reference of common kubectl commands for managing Kubernetes pods, deployments, services and more.

Searchable reference of common Vim commands for modes, movement, editing, search and windows.