72 free tools — no sign-up, no limits

Developer tools that just work.

Format, encode, convert, generate. Everything runs in your browser — your data never leaves the tab.

72 tools11 categories100% free0 accounts required

JSON Formatter

Base64 Encoder / Decoder

Text Tools

Tools for text manipulation and analysis

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Text to Slug

Convert any text into a URL-friendly slug. Handles special characters, accents, and unicode.

Lorem Ipsum Generator

Generate placeholder text for your designs and mockups. Choose paragraphs, sentences, or words.

Word Counter

Count words, characters, sentences, and paragraphs in your text. Includes reading time estimation.

Case Converter

Convert text between camelCase, snake_case, PascalCase, kebab-case, and CONSTANT_CASE instantly.

Whitespace Remover

Clean up whitespace from any text — combine transformations (trim lines, remove blank lines, collapse spaces) and choose an output mode (keep lines, join to one line, or strip all whitespace). 100% client-side.

Encoders & Decoders

Encode and decode data in various formats

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Base64 Encoder/Decoder

Encode text to Base64 or decode Base64 strings back to plain text.

HTML Encoder/Decoder

Encode special HTML characters to entities or decode HTML entities back to characters.

URL Encoder/Decoder

Encode or decode URLs and query parameters. Handles percent-encoding for safe URL transmission.

Generators

Generate hashes, passwords, UUIDs and more

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MD5 Hash Generator

Generate MD5 hash from any text input. Useful for checksums and data verification.

SHA-1 Hash Generator

Generate SHA-1 hash from any text input. Common for file integrity verification.

SHA-256 Hash Generator

Generate SHA-256 hash from any text input. Widely used for security and blockchain applications.

Secure Password Generator

Generate strong, random passwords with customizable length and character types.

Favicon Generator

Upload any image and generate a complete favicon package: ICO, PNG sizes for all devices, and the HTML code to paste.

BCrypt Generator

Generate and verify bcrypt hashes entirely in your browser. Choose cost factor 4–12.

SHA-512 Hash Generator

Generate SHA-512 hash from any text input. 128-character hex digest computed 100% in your browser.

Web Tools

Tools for web development and analysis

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What Is My IP

Discover your public IP address, location, ISP, and other network information.

Meta Tags Analyzer

Analyze the meta tags of any webpage. Check title, description, Open Graph, and Twitter Card tags.

IP Subnet Calculator

Calculate network address, broadcast IP, host range, and subnet mask from any CIDR notation.

HTTP Status Codes

Quick reference for all HTTP status codes (1xx–5xx) with descriptions and usage notes.

URL Parser

Break down any URL into its components: protocol, host, port, path, query parameters, and hash.

.gitignore Generator

Select your OS, IDE, and frameworks to instantly generate a clean .gitignore file.

Aspect Ratio Calculator

Calculate proportional dimensions for images and videos. Enter width, height, or ratio to instantly get the missing value. Common presets: 16:9, 4:3, 1:1, 3:2.

SSL Certificate Decoder

Decode and inspect SSL/TLS certificates. Paste a PEM or CRT file to extract domain, issuer, expiry date, SANs, and fingerprints — entirely in your browser.

DNS Lookup

Query DNS records for any domain — A, AAAA, MX, TXT, NS, CNAME, SOA, and CAA. Uses Cloudflare DNS-over-HTTPS for fast and private lookups without leaving your browser.

Converters

Convert between different data formats

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SVG to Data URI

Convert SVG code to a Data URI for use in CSS or HTML. Optimizes and encodes your SVG.

Color Converter

Convert colors between HEX, RGB, and HSL formats. Includes live color preview.

Unix Timestamp Converter

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

Markdown ↔ HTML

Bidirectional converter: turn Markdown into clean HTML with live preview, or convert HTML back to Markdown with configurable output options (heading style, code blocks, bullets). 100% client-side.

CSV ↔ JSON

Convert CSV to JSON and JSON to CSV. Handles headers, custom delimiters, and quoted fields.

JSON ↔ YAML

Convert JSON to YAML and YAML to JSON instantly. Essential for CI/CD pipelines, Docker, and Kubernetes configs.

Number Base Converter

Convert numbers between Binary, Decimal, Octal, and Hexadecimal instantly.

Image to Base64

Convert any image (JPG, PNG, GIF, SVG, WebP) to Base64 or data URI. Paste directly in CSS or HTML.

WebP Converter

Convert JPG, PNG, GIF, and BMP images to WebP format directly in your browser. Control quality and download instantly.

PX to REM Converter

Convert px to rem and rem to px instantly. Set a custom base font size for accurate results.

JSON ↔ XML Converter

Convert JSON to XML and XML to JSON. Handles nested objects, attributes, and arrays. Essential for enterprise integrations, SOAP APIs, and legacy systems.

Unit Converter

Convert between common units: temperature (°C, °F, K), length (mm to mi), weight (mg to t), speed (m/s, km/h, mph), and storage (B to TB). Instant bidirectional conversion.

Roman Numeral Converter

Convert decimal numbers to Roman numerals (1-3999) and back instantly, with symbol reference tables.

Color Palette Generator

Generate harmonious color palettes from any base color using color theory. Choose analogous, complementary, triadic, split-complementary, tetradic, or monochromatic harmony.

Developer Tools

Essential tools for software developers

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JSON Formatter

Format and minify JSON data. Syntax highlighting and one-click access to the JSON Validator for error detection.

JSON Validator

Validate JSON with invisible character detection and detailed error explanations.

JWT Decoder

Decode and inspect JSON Web Tokens. View header, payload, and signature information.

UUID Generator

Generate random UUIDs (v4). Create single or multiple unique identifiers instantly.

QR Code Generator

Generate downloadable QR codes from any URL or text. Export as SVG or PNG directly in your browser.

Regex Tester

Test regular expressions against text in real-time. See matches highlighted with capture groups.

JSON Schema Generator

Paste any JSON and instantly generate a valid JSON Schema (Draft-07). Use it for LLM structured outputs, API validation, Zod schemas, Pydantic models, or form validation.

Cron Expression Parser

Parse cron expressions and see the next scheduled run times. Supports standard 5-field cron syntax.

Chmod Calculator

Visual Unix permissions calculator. Select Read/Write/Execute for Owner, Group, and Others to get the numeric value and symbolic notation.

Diff Checker

Compare two texts and see the differences highlighted. Find additions, deletions, and changes.

Fake Data Generator

Generate realistic fake JSON data for testing and prototyping. Build a custom schema with names, emails, UUIDs, dates, and more — then generate as many rows as you need.

Markdown Table Generator

Create Markdown tables visually — add rows and columns, set alignment, and copy the Markdown output. Much easier than formatting pipes and dashes by hand.

JSON → TypeScript Interface

Generate TypeScript interfaces automatically from any JSON object. Handles nested objects, arrays, nullable values, and optional fields. Paste JSON and get ready-to-use TypeScript.

Code Screenshot

Turn any code snippet into a beautiful screenshot image. Choose theme (Dracula, VS Code, One Dark…), gradient background, font, line numbers, and window chrome. Export as PNG. 100% client-side.

Formatters

Format and beautify code and data

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CSS Loader Generator

Generate CSS loaders and spinners — spinner, dots, pulse, bars, and ripple. Customize color, size, speed, and thickness. Copy the HTML and CSS with one click.

CSS Minifier/Beautifier

Minify CSS to reduce file size or beautify compressed CSS for readability.

HTML Prettifier

Format and indent HTML code for better readability. Fix messy HTML structure.

SQL Formatter

Format SQL queries with proper indentation and keyword highlighting for better readability.

XML Formatter

Format and indent XML documents. Validate XML syntax and structure.

CSS Gradient Generator

Generate CSS linear, radial, and conic gradients with a visual editor. Copy the CSS instantly.

CSS Grid Generator

Generate CSS Grid layouts visually. Define rows, columns, and gaps, then copy the ready-to-use CSS.

Box Shadow Generator

Visual CSS box-shadow generator with live preview. Control offset, blur, spread, color, and opacity with sliders. Add multiple shadow layers and copy the CSS instantly.

Border Radius Generator

Visual CSS border-radius generator with independent sliders for each corner. Live preview with presets for common shapes like pill, rounded, and more.

Flexbox Generator

Visual flexbox playground — adjust container and child properties (flex-direction, justify-content, align-items, gap, flex-grow, etc.) and see the result live. Generates ready-to-use CSS.

Image Tools

Client-side image processing tools — compress, convert, and generate images directly in your browser

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Image Compressor

Compress and convert JPG, PNG, and WebP images directly in your browser. Adjust quality, switch output formats, and compare originals side by side with a slider. Open the full-size inspector to zoom and pan for pixel-level comparison. No upload to servers — your images stay private.

Image Resizer

Resize images to exact dimensions right in your browser. Lock aspect ratio, choose output format (JPEG, PNG, WebP) and quality. No upload required.

Image Cropper

Crop images in your browser using Canvas API. Free-form or fixed aspect ratio (1:1, 4:3, 16:9, 3:2). Drag handles to select crop area and download the result.

EXIF Metadata Viewer

Read EXIF metadata from JPEG, PNG, TIFF, WebP, and HEIC images. View camera model, exposure settings, GPS coordinates (with map link), and all embedded metadata. 100% client-side.

AI Tools

Tools for working smarter with AI and LLMs — token counting, prompt engineering, and cost estimation

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MCP Tool Builder

Build MCP (Model Context Protocol) tool definitions visually. Define name, description, and typed input parameters — generates the JSON for your MCP server instantly.

PDF Tools

Merge, split, and optimize PDF files entirely in your browser — no upload required

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PDF Merger

Combine multiple PDF files into one with page-level control. Preview thumbnails of every page, deselect pages you don't want, drag to reorder files, and download the merged result. 100% client-side — your files never leave your browser.

PDF Splitter

Split PDFs three ways with page thumbnail preview. Extract specific pages by clicking, define custom ranges (e.g. 1-3, 5, 7-10), or split every N pages into separate files. Download as PDF or ZIP. 100% client-side — your files never leave your browser.

PDF Compressor

Reduce PDF file size with lossless compression. Remove metadata (author, timestamps, XMP), optimize object streams, and re-encode structure — all without touching content, fonts, or images. 100% client-side — your files never leave your browser.