PDF Merger
Combine multiple PDF files into a single document instantly.
Your all in onedeveloper workspace
Format a response, compare two files, convert a value. Practical utilities for the work between the bigger things.
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JSON Viewer & Formatter
Beautify, prettify, or minify your JSON data with professional formatting.
PDF Merger
Combine multiple PDF files into a single document instantly.
Secure Password Generator
Generate strong, cryptographically secure random passwords for your accounts.
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Tool directory
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PDF Utilities
13PDF Compressor
Reduce the file size of your PDF documents while maintaining quality.
PDF Splitter
Separate specific pages into individual PDF files with ease.
JPG/PNG to PDF
Convert your images and photos into a high-quality PDF document.
PDF to JPG/PNG
Export PDF pages into high-resolution images for easy sharing.
Lock PDF with Password
Secure your confidential documents with strong password protection.
Extract PDF Pages
Pull specific pages out of any PDF document into a new file.
Rotate PDF Pages
Change the orientation and permanently rotate pages of your PDF.
PDF Watermark
Stamp custom text or image watermarks onto your documents.
PDF Metadata Viewer
View detailed properties, metadata, and creation info of any PDF.
PDF to Word Converter
Convert PDF documents into editable Word DOCX files with formatting preserved.
PDF Form Filler
Fill in and flatten interactive PDF form fields directly in your browser.
PDF Redaction Tool
Permanently black out and redact sensitive text and images from PDF documents.
JSON & Code Tools
22JSON Viewer & Formatter
Beautify, prettify, or minify your JSON data with professional formatting.
JSON Validator & Linter
Validate structured data against RFC standards to ensure error-free JSON.
cURL to Code Converter
Convert cURL commands into Python requests, JavaScript fetch, Go, and PHP code instantly.
JSON String Escape & Unescape
Quote plain text for JSON or decode a JSON string without evaluating code.
JSON Diff Checker
Compare two JSON objects side-by-side to highlight differences instantly.
JavaScript Minifier
Compress and obfuscate your JS code to significantly reduce load times.
JavaScript Formatter
Beautify and prettify minified or messy JavaScript code with proper indentation.
HTML Formatter & Beautifier
Beautify minified or messy HTML markup with proper indentation and structure.
Live HTML Preview
Render and inspect your raw HTML code in a real-time sandbox.
Handlebars (HBS) Viewer
Write Handlebars templates and render them live with custom JSON context data.
JSON Compressor
Strip whitespace and comments to minify your JSON strings for production.
XML Formatter & Beautifier
Format and prettify raw XML data with configurable indentation and live validation.
JSON Content Analyzer
Validate and extract structure from content-based JSON datasets.
JSONPath Tester
Test JSONPath expressions against any JSON document and see matching results in real time.
CSS Compressor
Minify styles and remove redundant code to optimize your CSS files.
HTML Compressor
Optimize your HTML markup by removing unnecessary spaces and tags.
YAML Formatter & Viewer
Prettify YAML config files with custom indentation and validation.
SQL Formatter & Beautifier
Reformat complex SQL queries for better readability and debugging.
GraphQL Schema Viewer
Paste a GraphQL SDL schema and explore types, queries, and mutations visually.
JSON Schema Generator
Infer a JSON Schema (Draft-07) from any sample JSON object automatically.
OpenAPI / Swagger Viewer
Paste an OpenAPI 3.x or Swagger 2.x spec and browse endpoints interactively.
CSS to Tailwind Converter
Convert plain CSS rules into the equivalent Tailwind CSS utility classes.
Visual & Design
26App Icon Generator
Create professional app icons for iOS, Android, and Web platforms.
Image Compressor
Compress JPEG and PNG images in-browser with adjustable quality and live file size preview.
Color Picker & Converter
Pick any color and instantly convert between HEX, RGB, HSL, and HSB with copy support.
PNG to ICO Converter
Generate multi-resolution favicon packages from any PNG image.
SVG to JSX Converter
Transform raw SVG markup into clean, reusable React/JSX components.
SVG Optimizer
Clean up and minify SVG files by removing redundant metadata.
SVG to Data URI
Convert SVG icons to Base64 data strings for direct CSS use.
Color Contrast Checker
Check WCAG AA/AAA color contrast ratios for accessible and readable UI designs.
Random Color Generator
Generate random colors in HEX, RGB, and HSL with one click, or build full palettes.
CSS Gradient Maker
Visually build complex linear and radial gradients with live code export.
Color Palette from Image
Upload any image and extract its dominant color palette in HEX, RGB, and CSS variables.
Placeholder Image Generator
Generate custom placeholder images with any size, color, and text for mockups and prototypes.
CSS Flexbox Generator
Visually build flexbox layouts with live preview and instant CSS code export.
Code to Image
Convert code snippets into beautiful, shareable images with syntax highlighting and window chrome.
Aspect Ratio Calculator
Calculate aspect ratios and scaled dimensions for screens, images, and responsive designs.
CSS Specificity Calculator
Calculate and compare the specificity score of any CSS selector visually.
Color Blindness Simulator
Upload an image and preview how it appears to people with protanopia, deuteranopia, and tritanopia.
Box Shadow Maker
Design beautiful CSS shadows with depth and export production code.
Color Palette Generator
Generate harmonious color schemes and palettes from a seed color.
CSS Grid Generator
Sketch interactive CSS grid layouts and download the generated CSS.
PX to REM Converter
Convert between pixels and REM units based on your base font size.
CSS Animation Generator
Build custom CSS keyframe animations visually and export production-ready code.
CSS Clip-Path Generator
Design polygon, circle, and ellipse clip-path shapes with a live visual editor.
CSS Text Shadow Maker
Design layered text shadow effects with a live preview and instant CSS export.
Border Radius Generator
Visually craft rounded corners with individual control over all four corners.
Typography Scale Calculator
Generate a harmonious modular type scale for headings and body text in any base size.
Generators
17Secure Password Generator
Generate strong, cryptographically secure random passwords for your accounts.
UUID/GUID Generator
Create random UUID v4 identifier strings for databases and software testing.
QR Code Creator
Generate custom QR codes for URLs, WiFi networks, and plain text instantly.
QR & Barcode Reader
Scan and decode QR codes or barcodes from your camera or local files.
Lorem Ipsum Generator
Quickly generate placeholder text in various lengths for design mockups.
GitHub README Generator
Build a professional GitHub README.md with badges, features, and install steps.
Git Commit Generator
Generate conventional commit messages with type, scope, description, and breaking change flags.
Barcode Generator
Generate professional Code128 and EAN barcodes for inventory and retail.
Test Data Generator
Populate your tests with fake names, phone numbers, and addresses randomly.
Mock API Data Tool
Generate complex JSON datasets for testing APIs and frontend components.
.gitignore Template Maker
Generate standard .gitignore files for any programming language or IDE.
Random String Generator
Create customized alphanumeric strings for keys, IDs, or secure tokens.
Docker Compose Builder
Swiftly generate multi-container docker-compose.yml files for your dev stacks.
SSH Key Pair Generator
Generate RSA, Ed25519, or ECDSA SSH key pairs for secure server authentication.
TOTP / OTP Code Generator
Generate a TOTP secret and 6-digit one-time codes for two-factor authentication.
Nano ID Generator
Generate URL-safe, compact, and collision-resistant Nano IDs for modern apps.
.env Template Generator
Paste your code or config and auto-generate a clean .env template with placeholder values.
AI & LLM Tools
07AI Prompt Optimizer
Refine and enhance your basic prompts with descriptive keywords for better AI results.
LLM Token Counter
Estimate token counts for your text to manage LLM context windows and costs.
JSON to JSONL Converter
Convert standard JSON arrays into JSON Lines format for AI model fine-tuning.
YAML to Pydantic Model
Transform YAML configurations into type-safe Python Pydantic classes for ML workflows.
Python Code Formatter
Beautify and standardize your Python ML scripts according to PEP 8 standards.
AI Voice Script Helper
Prepare and clean up your scripts for the best natural-sounding AI speech synthesis.
NLP Stopwords Remover
Clean your text data by removing common stopwords for better NLP model performance.
SEO & Marketing
07Meta Tag Generator
Build SEO-optimized HTML meta tags for Google, Facebook OG, and Twitter Cards.
JSON-LD Schema Builder
Create structured data for rich results (Product, Article, FAQ) using JSON-LD.
Robots.txt Maker
Configure crawlers and bot access to your website with a custom robots.txt file.
Open Graph Tag Builder
Build and preview Open Graph and Twitter Card meta tags with live Facebook and X previews.
XML Sitemap Generator
Generate a search-engine ready XML sitemap to help Google index your pages.
Keyword Density Checker
Break down any URL to inspect its structure, query params, and security status.
Advanced URL Analyzer
Break down any URL to inspect its structure, query params, and security status.
Transformation & Encoding
38Base64 Encoder & Decoder
Encode or decode strings and binary files into Base64 format instantly.
JWT Debugger & Decoder
Decode and inspect the header and payload of any JSON Web Token.
CSV to JSON Converter
Transform tabular CSV data into structured JSON objects or arrays.
URL Matcher & Encoder
Percent-encode or decode URL components for safe web transmission.
Unix Timestamp Converter
Convert between Unix timestamps and human-readable dates in any timezone.
JWT Token Generator
Build and sign standardized JSON Web Tokens for authentication testing.
Number Base Converter
Convert values between Hex, Binary, Decimal, and Octal bases.
YAML to JSON Converter
Parse and transform YAML configuration strings into JSON format.
String Escape Tool
Escape or unescape JSON strings, HTML entities, and URL sequences.
JSON to CSV Converter
Flatten JSON arrays into downloadable CSV spreadsheets with one click.
JSON to TOON Converter
Convert JSON to Token-Oriented Object Notation (TOON) for efficient LLM prompts.
Query String Builder & Parser
Convert URL query parameters to JSON and back, preserving repeated keys.
JSON to YAML Converter
Export your JSON data objects into lean YAML configuration format.
Markdown to HTML Viewer
Live preview and convert Markdown syntax into semantic HTML markup.
XML to JSON Converter
Seamlessly parse XML documents into dynamic JSON objects.
Base64 Text Converter
Encode plain text to Base64 or decode back to readable strings.
Binary ↔ Text Converter
Convert plain text to binary (01001000…) or decode binary strings back to readable text.
HTML Entity Encoder
Securely encode or decode special characters into HTML entities.
Date & Time Toolkit
Format, convert, and manipulate dates across all global timezones.
JSON to XML Converter
Wrap JSON key-value pairs into valid XML tag structures.
HTML to Markdown Tool
Cleanup HTML markup and convert it into clean, readable Markdown.
INI/JSON/YAML Converter
Rotate configuration files between INI, JSON, and YAML formats.
Universal Unit Converter
Convert between Length, Weight, Temperature, and other scientific units.
Data Transfer Converter
Calculate conversions between Bits, Bytes, KB, MB, GB, and TB.
TOML ↔ JSON Converter
Convert TOML configuration files to JSON or JSON back to TOML bidirectionally.
Base32 Encoder & Decoder
Encode text to Base32 (RFC 4648) or decode Base32 strings back to readable text.
Hex Encoder & Decoder
Convert plain text to hexadecimal encoding or decode hex strings back to text.
Morse Code Translator
Translate plain text into International Morse Code and vice versa.
ASCII & Unicode Table
Find character codes for decimal, hex, and U+hex Unicode points.
Image to Base64 Tool
Convert images directly into Base64 Data URLs for embedded assets.
Image to Text (OCR)
Extract text from images using optical character recognition technology.
JSON to Python Dataclass
Convert JSON objects into typed Python dataclasses or TypedDict definitions instantly.
JSON to C# Class
Generate C# POCO classes with proper types and attributes from any JSON object.
JSON to Java POJO
Transform JSON schemas into Java POJO classes with getters and setters.
JSON to Zod Schema
Generate a Zod validation schema from a sample JSON object for TypeScript projects.
CSV to SQL Converter
Convert CSV data into SQL INSERT statements for any major database dialect.
Markdown Table Generator
Paste tabular data or CSV and convert it into a formatted Markdown table instantly.
JSON5 / HJSON Parser
Parse and convert JSON5 or HJSON (with comments and trailing commas) to standard JSON.
Text Utilities
20Word & Character Counter
Analyze your text for word count, character count, and reading time statistics.
Line Ending Converter
Inspect and normalize Unix LF, Windows CRLF and legacy CR line endings.
Text Case Converter
Instantly transform your text between UPPERCASE, lowercase, camelCase, and more.
URL Slug Generator
Convert any string into a SEO-friendly and URL-safe permanent slug.
Text Diff Checker
Compare two blocks of text side-by-side to find additions and deletions.
ENV Diff & Merge
Compare two .env files, highlight changes, and generate a merged production ENV.
Text Repeater
Repeat any text or character a custom number of times with optional separator and line breaks.
Markdown Editor
Full-featured Markdown editor with live preview, toolbar, and export to .md or .html.
Reverse Text Tool
Flip your text backwards or reverse individual words and sentences.
Character Frequency Analyzer
Analyze text to see character frequency, distribution, and occurrence counts.
Number Formatter
Format numbers with locale, currency, decimal places, and thousand separators.
Backslash Remover
Strip escape backslashes from JSON or code strings for a cleaner output.
L33t Speak Translator
Style text using l33t substitutes or convert English to hacker speak.
Extra Space Remover
Clean up your text by removing redundant white spaces and empty lines.
Emoji Library & Picker
Search, browse, and copy emojis from a complete modern collection.
ASCII Text Art Maker
Transform your text into stylized ASCII art banners for consoles and comments.
Duplicate Line Remover
Paste any text and instantly strip all repeated lines, keeping only unique entries.
Sort Lines Tool
Sort lines alphabetically, numerically, by length, or randomly with one click.
Find & Replace Tool
Run multi-pattern find and replace operations on text with regex support.
Readability Score Checker
Analyze text for Flesch-Kincaid, Gunning Fog, and other readability scores.
Security & Hashing
19Website Security Scanner
Audit domains for exposed API keys, bearer tokens, and sensitive system files in real-time.
Password Breach Checker
Check if your password has been exposed in a data breach using k-anonymity — password never leaves your browser.
Password Strength Checker
Analyze password entropy, crack time, and WCAG-style strength score in real time.
SHA-256 Hash Generator
Compute a cryptographically secure 256-bit SHA-2 hash for data integrity.
SHA-1 Hash Generator
Generate a 160-bit SHA-1 hash for legacy compatibility and checksums.
MD5 Hash Generator
Calculate a 128-bit MD5 checksum for file verification and legacy systems.
File Checksum Calculator
Calculate and compare SHA-256 or SHA-512 hashes of local files.
Bcrypt Password Hasher
Generate salted Bcrypt hashes to securely store and protect user passwords.
AES Encryption Tool
Perform symmetric AES-256 encryption and decryption for sensitive data.
CSP Header Builder
Visually build a Content Security Policy header with all directives and copy the final string.
SHA-512 Hash Generator
Generate a high-security 512-bit SHA-2 hash for advanced cryptographic use.
RSA Key Encryptor
Encrypt or decrypt data using asymmetric RSA public and private keys.
HMAC Signature Maker
Generate hash-based message authentication codes for API request signing.
CRC32 Checksum Tool
Compute cyclic redundancy check values for fast data error detection.
DES/3DES Cipher Tool
Encrypt data using legacy Data Encryption Standard or Triple-DES algorithms.
XOR Encryption Utility
Apply bitwise XOR ciphering for simple data obfuscation and decryption.
PBKDF2 / Argon2 Hasher
Hash passwords using modern PBKDF2 or Argon2 algorithms with configurable iterations.
SSL Certificate Decoder
Paste a PEM certificate and inspect its subject, issuer, validity, and SANs.
TOTP Authenticator Tester
Enter a TOTP secret and verify live 6-digit codes match your authenticator app.
Validators
15Regex Tester & Debugger
Test, validate, and debug regular expressions with real-time highlighting.
Email Address Validator
Check your email syntax and domain records for validity and errors.
URL Structure Validator
Validate URL syntax, protocols, and encoding to ensure standard compliance.
HTTP Status Codes Reference
Browse and search all HTTP status codes from 1xx to 5xx with detailed descriptions.
IP Address Validator
Verify the syntax and range of IPv4 and IPv6 network addresses.
Cron Expression Helper
Translate and validate complex cron schedules into human-readable text.
Kubernetes Manifest Linter
Analyze your K8s YAML files for structural errors and best practices.
Color Code Validator
Test and convert HEX, RGB, HSL codes to ensure design accuracy.
SemVer Comparison Tool
Check and compare semantic versions to find the latest releases.
JSON Schema Validator
Validate a JSON document against a custom JSON Schema draft and see detailed errors.
HTML Validator
Check your HTML markup for W3C compliance errors, missing tags, and accessibility issues.
Phone Number Validator
Validate and format international phone numbers by country using E.164 standards.
IBAN Validator
Verify IBAN bank account numbers and extract country, check digits, and BBAN.
Credit Card Validator
Run a Luhn algorithm check to validate credit card numbers and identify card networks.
ISBN-10 / ISBN-13 Validator
Validate and convert between ISBN-10 and ISBN-13 book identifier formats.
Measurement & Math
12Date Difference Calculator
Calculate exact days, weeks, months, and years between any two dates including working days.
Percent Calculator
Quickly calculate percentage increases, decreases, or parts of a whole.
Time Zone Converter
Convert date and time between zones with daylight-saving ambiguity handling.
Age Calculator Online
Compute exactly how old you are in years, months, and days from your birthdate.
BMI Calculator Online
Determine your Body Mass Index (BMI) and health category based on height and weight.
EMI & Loan Calculator
Simulate mortgage repayments and monthly EMIs with interest breakdown.
Scientific Calculator
Advanced online scientific keypad for complex math and trigonometric equations.
Tip Calculator
Calculate tip amount, total bill, and split between any number of people instantly.
Calorie & BMR Calculator
Calculate your Basal Metabolic Rate and daily calorie needs based on activity level using Mifflin-St Jeor.
Compound Interest Calculator
Calculate investment growth with compound interest, contributions, and inflation.
Time Zone Meeting Planner
Find the best meeting time across multiple time zones with a visual overlap finder.
Roman Numeral Converter
Convert between Arabic numbers and Roman numerals instantly in both directions.
Lookup & System
17Internet Speed Test
Measure your real-time download and upload speeds with a precision meter.
Hardware Device Test
Check if your camera, microphone, and speakers are working correctly.
What is My IP Address?
Instantly discover your public IPv4 and IPv6 addresses and location info.
IP Geolocation Lookup
Look up the country, city, ISP, timezone, and coordinates of any IP address instantly.
Domain WHOIS Lookup
Check domain registration details, expiry dates, and ownership records.
HTTP Redirect Checker
Trace the full redirect chain of any URL and see every 301/302 hop to the final destination.
DNS Lookup Tool
Query DNS records (A, AAAA, MX, TXT, CNAME, NS) for any domain in real time.
IP Subnet Calculator
Calculate subnet masks, network address, broadcast IP, and usable host range from CIDR.
chmod Permission Calculator
Calculate Unix file permissions between numeric (755) and symbolic (rwxr-xr-x) modes.
Social Username Checker
Audit handle availability across 50+ major social media platforms.
Global Map Finder
Search for locations and retrieve exact GPS coordinates worldwide.
Client Info & User Agent
Search for locations and retrieve exact GPS coordinates worldwide.
Bulk URL Opener Tool
Open a custom list of websites in separate browser tabs simultaneously.
HTTP Header Inspector
Fetch and inspect the response headers of any public URL in real time.
Port Checker
Check whether a specific TCP port is open or closed on any host.
ASN Lookup
Look up Autonomous System Numbers to identify ISPs, CDNs, and network owners.
SSL Certificate Checker
Look up the country, city, ISP, timezone, and coordinates of any IP address instantly.
Spreadsheet & Office
12CSV Viewer & Table
Paste or upload a CSV file and explore it as a sortable, searchable table.
Excel to CSV Converter
Upload an XLSX spreadsheet and export any sheet as a downloadable CSV file.
Excel to JSON Converter
Convert XLSX spreadsheet sheets into structured JSON arrays instantly.
CSV Duplicate Remover
Find and remove duplicate rows from any CSV dataset in your browser.
Text to Word Document
Create a Word-compatible DOCX file from plain text and an optional title.
Word to Text Extractor
Extract text and table-cell paragraphs from a DOCX file locally.
Word Text Merger
Combine the text of multiple DOCX documents into a new Word file.
CSV File Merger
Upload multiple CSV files and merge them into one by stacking rows or joining on a shared column.
PPTX Text Extractor
Extract all text content from PowerPoint slides without installing Office.
Word / DOCX Viewer
Open and read Word DOCX files in your browser without installing Microsoft Office.
JSON to Excel Converter
Convert JSON arrays into downloadable XLSX spreadsheets with one click.
Excel Formula Reference
Searchable reference for 100+ Excel and Google Sheets formulas with syntax, examples, and tips.
Mobile & Platforms
09JSON to TypeScript
Convert JSON data into production-ready TypeScript interface definitions.
JSON to Go Struct
Transform JSON schemas into valid Go/Golang struct models instantly.
CSS to React Native
Transform standard CSS properties into RN StyleSheet syntax styles.
RN Shadow Generator
Visually build React Native shadow styles with cross-platform support.
RN Flexbox Playground
Design React Native layouts with an interactive flexbox CSS sandbox.
JSON to Kotlin Data Class
Generate type-safe Kotlin data classes from any JSON object schema.
JSON to Swift Codable
Generate Swift Codable models from JSON for iOS/macOS apps.
Kotlin Code Formatter
Beautify and reformat your Kotlin source code for better legibility.
Swift Code Formatter
Clean up and standardize your Swift programming syntax automatically.
Image Tools
06Image Format Converter
Convert images between WebP, AVIF, PNG, JPEG, and GIF formats in your browser.
Image Crop Tool
Crop images to any size or aspect ratio directly in your browser with a drag-and-drop canvas editor.
EXIF Metadata Viewer & Stripper
Inspect or permanently remove EXIF metadata from JPEG and PNG images.
Image Watermarker
Add custom text watermarks to images with control over font, size, color, opacity, and position.
Image Resizer
Resize images to exact pixel dimensions or percentages while preserving aspect ratio.
GIF Frame Extractor
Split an animated GIF into individual frames and download them as PNG images.
API Testing
06HTTP Request Tester
Send GET, POST, PUT, and DELETE requests with custom headers and body in-browser.
Webhook Tester
Generate a unique webhook URL, send requests to it, and inspect headers, body, and query parameters in real-time.
Slack Webhook Tester
Send test messages to any Slack incoming webhook and verify your integration is working.
WebSocket Tester
Connect to any WebSocket server and send or receive messages interactively.
SMTP Email Tester
Test SMTP server connectivity, verify email delivery settings, and send test emails to confirm your mail server is working.
GraphQL Playground
Run GraphQL queries and mutations against any endpoint with schema introspection.