Developer Tools
Encoders, formatters, converters, and reference utilities for developers.
62 tools
.env File Generator
Generate .env files with templates for Next.js, Express, Django, Laravel, AWS, Stripe, Firebase, and more. Includes security best practices and secret generation.
.gitignore Generator
Free .gitignore file generator. Combine templates for Node.js, Python, Java, React, VS Code, and more. Generate project-specific ignore patterns instantly.
Advanced Word Counter
Count words, characters, sentences, and paragraphs. Calculate reading time and analyze text statistics with this free online word counter.
ASCII Art Generator
Free online ASCII generator: convert text to ASCII art with 200+ FIGlet fonts, or turn images into ASCII art with color (HTML/ANSI), adjustable width & dithering. 100% in-browser — nothing uploaded. Great for Discord, Twitch, GitHub & terminal banners.
AWS S3 Command Generator
Generate AWS S3 CLI commands for sync, cp, mv operations. Build the right flags for includes, excludes, ACLs, and storage classes without memorizing syntax.
Book Page Size Converter
Convert between book page sizes and formats. Calculate trim sizes, margins, and spine width for self-publishing and print design.
Case Converter
Free case converter. Instantly change text to UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case, kebab-case and more, with live word counts.
Color Contrast Checker
Test text and background color contrast against WCAG 2.1 AA and AAA standards. See pass/fail for normal and large text and fix accessibility issues fast.
Color Palette Generator
Generate complementary, analogous, triadic and monochromatic color palettes from any base color. Free palette generator for designers and developers.
Color Picker & Converter - HEX, RGB, HSL
Pick colors and convert between HEX, RGB, HSL, and HSV formats. Includes color palette generator, contrast checker, and CSS code export. Free online tool.
Cron Expression Builder
Build cron expressions visually. Create schedules, generate cron syntax, and get human-readable descriptions for task automation.
CSS Formatter & Beautifier
Free CSS formatter and beautifier. Pretty-print CSS with one declaration per line, or minify to remove whitespace and comments. Handles @media. No upload.
CSV to JSON Converter
Convert CSV to JSON for APIs or JSON to CSV for spreadsheets. Supports custom delimiters and nested data structures.
Data Format Converter
Free online data format converter. Convert between JSON, YAML, XML, TOML, and CSV instantly with real-time validation. Privacy-first, client-side processing.
Docker Command Builder
Build Docker commands with an interactive interface. Generate docker run, build, and compose commands without memorizing syntax.
Dockerfile Generator
Generate optimized Dockerfiles with multi-stage builds, non-root users, health checks, and best practices. Templates for Python, Node.js, Go, Java, and Nginx.
Email Verifier
Free email verifier: check syntax, MX records, disposable/role addresses, and live mailbox existence to see whether an email address is deliverable.
Excel to JSON Converter
Convert Excel spreadsheets to JSON format. Upload XLSX or CSV files and get clean, formatted JSON output instantly.
Exchange Online PowerShell Command Builder
Generate ready-to-run Exchange Online PowerShell commands: grant Full Access / Send As, set or audit forwarding, create shared mailboxes, manage distribution groups, run message trace, set calendar permissions, transport rules, and mailbox reports.
File Metadata Analyzer
Extract EXIF/GPS from photos, PDF properties, audio ID3 tags, and Office document metadata. View GPS on Google Maps, export CSV reports. Free, private, browser-based.
Git Branch Visualizer
Compare Git branching strategies visually. Understand GitFlow, GitHub Flow, and trunk-based development with diagrams and commands.
Git Command Reference
Searchable Git command reference with examples. Find the right Git commands for branching, merging, rebasing, and more.
GUID & UUID Generator
Generate GUIDs and UUIDs (v1, v4, v7) instantly. Bulk generation, format options, and copy to clipboard. Free online UUID/GUID generator — no signup needed.
Hex to RGB Converter
Convert any hex color code to RGB values instantly. Understand the hex-to-RGB math and get ready-to-paste rgb() and rgba() values for your CSS.
HTML Entity Encoder & Decoder
Encode and decode HTML entities online. Prevent XSS attacks with automatic entity encoding. Supports named and numeric entities. Free, no signup.
HTML Formatter & Beautifier
Free HTML formatter and beautifier. Pretty-print and indent HTML, or minify to remove whitespace and comments. Quote-aware, handles void tags. No upload.
HTTP Request Builder
Build HTTP requests with custom headers, auth, and body formats. Test APIs, analyze responses, and generate code. Client-side processing.
HTTP Status Code Lookup
Quick-reference guide to every HTTP status code: 1xx informational, 2xx success, 3xx redirects, 4xx client errors, 5xx server errors. Search, filter, and copy.
JavaScript Formatter
Free online JavaScript formatter and beautifier. Paste minified or messy JS to instantly format it with 2-space, 4-space, or tab indentation. Client-side.
JavaScript Minifier
Free online JavaScript minifier. Compress and shrink JS with Terser to cut file size, strip comments, and speed up page loads. See byte savings instantly.
JSON Formatter
Free JSON formatter and validator. Pretty-print, minify, and validate JSON with syntax highlighting and detailed error messages.
JSON Validator & Formatter
Validate and format JSON with detailed error messages, tree visualization, and syntax highlighting. Fix JSON errors instantly. Free online tool.
LLM Token Counter
Count tokens in text for GPT-4, Claude, Llama, and other LLMs. Estimate API costs, compare models, and optimize prompts for token limits.
Lorem Ipsum & Placeholder Image Generator
Free Lorem Ipsum generator. Create dummy text for designs, mockups, and prototypes. Generate paragraphs, sentences, or words of placeholder content instantly.
Markdown Preview & Editor
Live markdown editor with instant preview. Supports GitHub Flavored Markdown, tables, code blocks, and task lists. Export to HTML. Free, no signup.
Markdown Table Generator
Free Markdown table generator. Build GFM tables in a visual grid, set per-column alignment, preview live, and copy clean Markdown. Runs in your browser.
Microsoft Graph PowerShell Command Builder (Azure AD / Entra ID)
Free Microsoft Graph PowerShell SDK command builder for Entra ID (Azure AD). Generate copy-ready scripts for users, groups, MFA reports, licensing, roles, sign-in logs, and devices - each with the minimal Connect-MgGraph scopes. Legacy AzureAD equivalents included.
Mock Data Generator
Generate realistic mock data for testing and development. Create fake names, emails, addresses, and custom data formats.
Number Base Converter
Free number base converter. Convert binary to decimal, hex to decimal, decimal to binary and more — all four bases update live in your browser.
Online Diff Checker - Text, Config & File Compare
Free text & config diff checker. Compare files side-by-side or unified, with line, word & character modes. Runs in your browser - nothing is uploaded.
Online Regex Tester & Debugger
Test regular expressions online with live matching, pattern explanations, and a built-in regex library. Supports JavaScript, Python, and Go flavors. Free.
package.json Generator
Generate package.json files with dependency presets for React, Next.js, Express, testing, Tailwind, Prisma, and more. Includes script templates and version management.
Python requirements.txt Generator
Generate Python requirements.txt files with presets for Django, FastAPI, Flask, Data Science, ML, LLM, testing, and CLI development. Copy-ready with version pinning options.
Rate Limit Calculator
Design safe API throttling with our rate limit calculator. Model request windows, concurrency, bursts, and queue sizing to prevent 429 errors.
RGB to Hex Converter
Convert RGB color values to a hex code instantly. Learn the RGB-to-hex math and copy clean six-digit hex codes for your HTML and CSS.
Semver Calculator
Compare semantic versions and test version ranges. Validate semver strings and calculate version increments.
SQL Dialect Translator
Free online SQL dialect translator - auto-detects source dialect and converts SQL syntax between MySQL, PostgreSQL, SQL Server, Oracle, SQLite, BigQuery, Redshift, and Snowflake
SQL Formatter & Beautifier
Free online SQL formatter and beautifier. Format messy SQL queries with proper indentation, syntax highlighting, and support for MySQL, PostgreSQL, Oracle, and SQL Server.
SRI Hash Generator
Generate SHA-256, SHA-384, SHA-512 integrity hashes for JavaScript and CSS files. Protect against CDN compromise with SRI.
Terraform Plan Explainer
Analyze and explain Terraform plan output. Understand infrastructure changes before applying them to your environment.
Timezone Meeting Planner & World Clock
Plan meetings across time zones. Find overlap windows for global teams, convert UTC/EST/PST/GMT, view 38 world clocks, and export to calendar. Free, no signup.
TLD Enumerator
Free TLD enumerator tool. Check domain availability across 1,500+ TLDs for brand protection, typosquatting detection, and domain reconnaissance.
Unix Epoch Time Converter - Timestamp to Date Tool
Free Unix timestamp converter. Convert epoch time to dates and dates to timestamps instantly. Supports seconds, milliseconds, hex, FILETIME, LDAP, and batch conversion.
URL Encode/Decode with Query Parser
Encode and decode URLs. Convert special characters to percent-encoding for URLs, query strings, and API parameters. Instant conversion.
User Agent Parser & Analyzer
Parse user agent strings to detect browser, OS, device type, and bots. Analyze Chrome, Firefox, Safari, and Googlebot user agents instantly. Free tool.
Webhook Payload Generator
Generate sample webhook payloads for testing integrations. Create JSON payloads for Stripe, GitHub, Slack, and more.
Webhook Tester & Inspector
Generate temporary webhook endpoints, capture payloads, and validate signatures for GitHub, Stripe, Shopify, and Slack. Free webhook testing tool.
Windows FILETIME Converter
Free Windows FILETIME converter. Convert 64-bit FILETIME timestamps to human-readable dates and back. Supports hex, decimal, and LDAP formats.
Windows Update PowerShell Generator
Generate Windows Update PowerShell commands for local and remote computers. PSWindowsUpdate, usoclient, wuauclt, remote patching by computer name or IP, update history, and WSUS settings.
XML Formatter
Free online XML formatter. Pretty-print and indent messy XML, minify it, and check it is well-formed — instantly and privately in your browser.
YAML ⇄ JSON Converter
Convert YAML to JSON or JSON to YAML instantly. Paste data, upload files, and download results. All conversions run in your browser for maximum privacy.
YAML Formatter & Validator
Free YAML formatter and validator. Check YAML syntax, reformat with clean indentation, and see parse errors with line and column. Runs in your browser.