Skip to content
Back to home

Tools

Client-side utilities built for privacy. Every tool runs entirely in your browser — no data is ever sent to a server.

Developer Tools57

🔏SecurityAPI

AES Encrypt / Decrypt

Encrypt and decrypt text using AES-256-GCM with PBKDF2 key derivation, all in-browser.

🚀Developer

API Tester

Send HTTP requests with custom headers and body, and inspect responses with timing.

📐DeveloperAPI

Aspect Ratio Calculator

Calculate dimensions while maintaining aspect ratios with common presets.

🤫EncodingAPI

Bahasa Rahsia

Encode and decode text using Malaysian secret languages (Bahasa F, M, P, S, K) by inserting syllable echoes.

🔄EncodingAPI

Base64 Encoder / Decoder

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

🖼️Encoding

Base64 Image Converter

Convert images to Base64 data URIs and preview Base64-encoded images with size info.

🎭Developer

CSS Box Shadow Generator

Visually design CSS box shadows with multiple layers, live preview, and copy-ready CSS.

🔒DeveloperAPI

Chmod Calculator

Calculate Unix file permissions with an interactive checkbox grid and octal/symbolic output.

📸Developer

Code Screenshot

Create beautiful code screenshots with syntax highlighting, themes, and window chrome.

🎨DeveloperAPI

Color Converter

Convert between HEX, RGB, and HSL color formats with live preview and CSS snippets.

⏰DeveloperAPI

Cron Expression Builder

Build and understand cron expressions with an interactive visual editor and presets.

📝DeveloperAPI

Diff Checker

Compare two texts side-by-side with color-coded additions, removals, and unchanged lines.

🎭DeveloperAPI

Fake Data Generator

Generate realistic fake data for people, emails, phones, addresses, and companies in JSON or CSV.

⭐Developer

Favicon Generator

Upload an image and generate favicons in all standard sizes with HTML link tags.

🔎Security

File Hash Verifier

Compute MD5, SHA-1, SHA-256, and SHA-512 hashes of any file and verify against expected values.

🧬CryptographyAPI

Hash Generator

Compute MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes of any text input.

🔣DeveloperAPI

HTML Entity Encoder / Decoder

Encode and decode HTML entities for special characters and non-ASCII text.

📡DeveloperAPI

HTTP Status Codes

Browse and search all HTTP status codes with descriptions and color-coded categories.

🌐DeveloperAPI

IP / CIDR Calculator

Calculate network address, subnet mask, host range, and binary representation from CIDR notation.

📊DeveloperAPI

JSON ↔ CSV Converter

Convert between JSON arrays and CSV format with download support.

📋DeveloperAPI

JSON Formatter & Validator

Format, minify, and validate JSON data with syntax error reporting.

🔷DeveloperAPI

JSON to TypeScript

Generate TypeScript interfaces from JSON data with recursive type inference.

🪪AuthenticationAPI

JWT Decoder & Generator

Decode, inspect, and generate signed JSON Web Tokens with HMAC algorithms.

✍️DeveloperAPI

Lorem Ipsum Generator

Generate placeholder Lorem Ipsum text in words, sentences, or paragraphs.

📖Developer

Markdown Preview

Write and preview Markdown with live rendering and HTML output.

🔢DeveloperAPI

Number Base Converter

Convert numbers between decimal, hexadecimal, binary, and octal bases.

🔐SecurityAPI

Password Generator

Generate cryptographically secure passwords with customizable length and character sets.

📱Developer

QR Code Generator

Generate QR codes from text or URLs with live preview and PNG download.

🔍DeveloperAPI

Regex Tester

Test regular expressions with real-time highlighting, match groups, and flag toggles.

📊DeveloperAPI

SLA / Uptime Calculator

Convert between SLA percentages and allowed downtime per day, week, month, and year.

🔗DeveloperAPI

Slug Generator

Convert titles and strings into URL-friendly slugs with accent transliteration.

🔤DeveloperAPI

Text Case Converter

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

🕐EncodingAPI

Timestamp Converter

Convert between Unix timestamps and human-readable dates with multiple format outputs.

🔗EncodingAPI

URL Encoder / Decoder

Encode and decode URLs with support for both full URI and component encoding.

🆔DeveloperAPI

UUID Generator

Generate UUID v7 (time-sorted) or v4 (random) in bulk with case formatting options.

🌈Developer

CSS Gradient Generator

Build linear, radial, and conic CSS gradients with color stops, angle controls, presets, and live preview.

✏️Developer

SVG Path Editor

Edit SVG path data with live preview, fill and stroke controls, viewBox settings, and shape presets.

🗃️DeveloperAPI

JSON to SQL Converter

Convert JSON arrays to SQL CREATE TABLE and INSERT statements for MySQL, PostgreSQL, and SQLite.

🖼️Developer

OG Image Preview

Preview how your Open Graph meta tags will look on Twitter/X, Facebook, LinkedIn, and Slack with HTML tag generation.

📐Developer

Flexbox & Grid Playground

Experiment with CSS Flexbox and Grid layouts interactively with live preview and copy-ready CSS output.

🎨DeveloperAPI

Color Palette Generator

Generate harmonious color palettes from a base color — complementary, analogous, triadic, split-complementary, tetradic, and monochromatic with tints and shades.

🗄️DeveloperAPI

SQL Formatter

Format and beautify raw SQL with proper indentation, keyword casing, and line breaks for SELECT, INSERT, UPDATE, DELETE, and CREATE statements.

🎬Developer

CSS Animation Builder

Visually build CSS @keyframes animations with a keyframe editor, timing controls, presets, and live preview.

🔀DeveloperAPI

YAML ↔ JSON Converter

Convert between YAML and JSON formats with validation, syntax highlighting, and swap support.

🏷️Developer

Meta Tag Generator

Generate HTML meta tags for SEO, Open Graph, and Twitter Cards with live preview of the output.

⚙️DeveloperAPI

TOML / .env Converter

Convert between .env files, TOML, and JSON config formats with validation and copy support.

🌍Developer

DNS Record Lookup

Look up DNS records (A, AAAA, CNAME, MX, TXT, NS) for any domain using public DNS-over-HTTPS APIs.

📄Developer

README Generator

Generate a well-structured README.md from a form with features, installation, usage, badges, and license.

⬜Developer

CSS Border Radius Generator

Design border-radius values visually with simple 4-value and advanced 8-value organic shape modes.

🔑SecurityAPI

JWT Builder & Validator

Build signed JWTs with HS256/HS384/HS512 and validate tokens with signature verification and expiry checks.

📅DeveloperAPI

Cron Scheduler Simulator

Simulate cron expressions to see next execution times, run frequencies, and human-readable descriptions.

📜DeveloperAPI

OpenAPI / Swagger Validator

Validate OpenAPI 3.x and Swagger 2.0 specs with endpoint summary, schema counts, and structural error detection.

🧩DeveloperAPI

SQL Query Explainer

Parse SQL queries to show tables, joins, conditions, complexity score, and optimization hints.

🚫DeveloperAPI

.gitignore Builder

Combine .gitignore templates for languages, frameworks, IDEs, and OS with deduplication and section comments.

🛡️SecurityAPI

CSP Header Generator

Generate Content-Security-Policy headers with directive editor, presets, security scoring, and multi-format output.

🔄EncodingAPI

Encoding Multi-Tool

Convert between text, hex, binary, octal, and decimal with character inspection and all representations at once.

📄DeveloperAPI

Markdown to PDF

Convert Markdown to a beautifully formatted PDF with proper typography, tables, code blocks, and one-click download.

General Utilities18

🚗FinanceAPI

EV vs ICE Cost Comparison

Compare total cost of ownership between electric and gas vehicles over time.

🧾Utility

Expense Splitter

Split expenses among friends with equal, exact, or percentage splits and a settlement plan.

💵FinanceAPI

Freelance Rate Calculator

Calculate your freelance hourly rate based on income goals, taxes, and expenses, plus side hustle analysis.

🖼️Utility

Image Resizer

Resize images in the browser with format conversion, quality control, and download.

💧Utility

Image Watermark

Add text or image watermarks to photos with adjustable position, opacity, and rotation.

📄Finance

Invoice PDF Generator

Create professional invoices with line items, tax, and discount, then export as PDF.

💰UtilityAPI

Loan Calculator

Calculate monthly payments, total interest, and view amortization schedules.

💼UtilityAPI

Meeting Cost Calculator

Calculate the real cost of meetings based on attendees, hourly rates, and duration with a live ticker.

🍅Utility

Pomodoro Timer

Stay productive with a customizable Pomodoro timer with work and break sessions.

🎲UtilityAPI

Random Picker

Pick random items, shuffle lists, roll dice, and flip coins with cryptographic randomness.

✒️Utility

Signature Generator

Draw your signature on a canvas pad and export as transparent or white-background PNG.

⌨️Utility

Typing Speed Test

Test your typing speed and accuracy with real-time WPM tracking and per-character feedback.

📏UtilityAPI

Unit Converter

Convert between units of length, weight, temperature, data, and speed.

📝UtilityAPI

Word & Character Counter

Count words, characters, sentences, paragraphs, and estimate reading time.

🎂UtilityAPI

Age Calculator

Calculate exact age in years, months, and days with total days, weeks, hours, and next birthday countdown.

📦Utility

Image Compressor

Compress PNG, JPEG, and WebP images in-browser with quality control, before/after comparison, and size savings.

✂️FilesAPI

PDF Page Cutter

Extract specific pages or page ranges from a PDF file. Select pages visually or by range, then download the trimmed PDF — all in-browser.

📈UtilityAPI

Fake MRR Chart Generator

Generate a realistic Stripe-style MRR chart for demos and presentations. Choose a growth curve (Linear, Exponential, S-Curve, Hockey Stick), set your target, and export as PNG or copy data as CSV/JSON.