All Online Tools & Utilities
The complete directory of 107 privacy-first tools for AI engineering, software developers, university students, and business professionals.
Showing 107 Tools
AI Token Counter & Cost Calculator
Estimate token count and API costs for OpenAI (GPT-4o), Anthropic (Claude 3.5), and Google (Gemini) models.
Context Window Calculator
Visualize how much of each AI model's context window your prompt or document uses across 12+ LLMs.
AI API Budget Calculator
Project monthly and annual AI API costs across OpenAI, Anthropic, Google, and Groq based on your request volume.
Image Compressor
Compress images locally to reduce file size without losing quality.
Image Resizer
Resize images to specific dimensions instantly in your browser.
JPG to PNG Converter
Convert JPG/JPEG images to PNG format instantly.
PNG to JPG Converter
Convert PNG images to JPG/JPEG format to reduce file size.
Image to WebP Converter
Convert images to the highly-optimized WebP format.
Image Cropper
Crop and trim your images perfectly with an interactive editor.
Image Rotator
Rotate images easily and download the corrected version.
Image Metadata (EXIF) Viewer
Extract and view hidden EXIF data from photos.
SVG to PNG Converter
Convert SVG vector files to high-quality PNG images.
JSON to TypeScript Generator
Convert JSON objects and API responses into clean, strongly typed TypeScript interfaces or type definitions.
JSON Schema Generator
Generate Draft-07 and 2020-12 compliant JSON Schema documents from sample JSON objects.
Cron Expression Builder & Explainer
Build, parse, and decode standard 5-part cron expressions with human-readable explanations and upcoming run times.
Open Graph & Social Media Preview
Preview how your web page appears when shared on Twitter/X, Facebook, LinkedIn, and Google SERPs with instant HTML meta tag generation.
JSON Formatter
Format, validate, and beautify your JSON data instantly with syntax highlighting.
Base64 Encoder / Decoder
Encode or decode strings to Base64 safely and quickly.
JWT Decoder
Decode JSON Web Tokens securely without sending them to a server.
JSON Validator
Validate your JSON strings and detect syntax errors instantly.
JSON Minifier
Minify JSON files by removing unnecessary whitespace and line breaks.
UUID Generator
Generate highly secure, random UUIDs (v4) instantly.
URL Encoder
Encode a string so it can be safely transmitted in a URL.
URL Decoder
Decode a URL-encoded string back to its original format.
HTML Formatter & Code Beautifier
Format, beautify, and indent unformatted HTML code directly in your browser with instant code highlights.
XML Formatter
Format and beautify XML strings instantly in your browser.
XML Validator
Validate XML syntax and find parsing errors instantly.
SQL Formatter
Format SQL queries and beautify database scripts.
SQL Minifier
Compress SQL queries by removing comments and whitespace.
CSS Beautifier
Beautify and format minified CSS code.
CSS Minifier
Minify CSS code to reduce file size for production.
JavaScript Beautifier
Format and indent messy or minified JavaScript code.
JavaScript Minifier
Quickly minify JS code by removing comments and whitespace.
JWT Generator
Generate HMAC SHA256 JSON Web Tokens entirely in your browser.
Reading Time Calculator
Calculate accurate reading and speaking times for your text.
Text Compare
Compare two pieces of text side-by-side to spot differences.
Remove Extra Spaces
Instantly clean up your text by removing duplicate spaces and formatting anomalies.
Random Password Generator
Generate highly secure, cryptographically random passwords.
Word & Character Counter
Instantly count words, characters, and lines in your text.
Case Converter
Convert text between UPPERCASE, lowercase, Title Case, camelCase, and more.
Remove Duplicate Lines
Clean up lists by instantly finding and deleting duplicate lines.
Remove Empty Lines
Instantly strip all blank lines from your text documents or code.
Text Sorter
Alphabetize lists or randomly shuffle lines of text instantly.
URL Slug Generator
Convert any title or phrase into a clean, SEO-friendly URL slug.
Lorem Ipsum Generator
Generate placeholder text instantly for your design mockups.
JSON to CSV
Instantly flatten and convert JSON arrays or objects into comma-separated values (CSV).
CSV to JSON
Convert comma-separated values (CSV) files into beautifully formatted JSON arrays.
Markdown to HTML
Convert Markdown syntax directly into valid, clean HTML code.
HTML to Markdown
Reverse engineer HTML code back into clean, readable Markdown syntax.
Unix Timestamp Converter
Convert Unix epoch timestamps to human-readable dates and vice versa.
Number Base Converter
Convert numbers instantly between Decimal, Hexadecimal, Binary, and Octal formats.
Age Calculator
Calculate your exact age in years, months, and days.
Percentage Calculator
Easily calculate percentages, such as finding X% of Y or figuring out what % X is of Y.
Discount Calculator
Calculate the final price and total savings after a percentage discount is applied.
BMI Calculator
Calculate your Body Mass Index (BMI) using metric or imperial units.
EMI Calculator
Calculate Equated Monthly Installments (EMI) for home loans, car loans, or personal loans.
GST Calculator
Add or remove Goods and Services Tax (GST) from a price instantly.
Loan Calculator
Estimate monthly payments and total interest for any type of loan.
Date Difference Calculator
Calculate the exact number of days, months, and years between two calendar dates.
Base64 to Image Decoder
Decode Base64 strings directly into downloadable PNG/JPG image files.
Image to Base64 Encoder
Convert any image into a raw Base64 string for direct embedding in CSS or HTML.
Binary Translator
Instantly translate text to binary code or decode binary strings back to text.
Hex Translator
Convert text to hexadecimal format or decode hexadecimal back into readable text.
Morse Code Translator
Convert standard text to Morse code (dots and dashes) and vice versa.
String Reverser
Reverse entire strings, word orders, or reverse both simultaneously.
Upside Down Text
Flip your text upside down instantly for social media or messages.
MD5 Hash Generator
Generate MD5 cryptographic hashes from text strings instantly.
SHA Hash Generator
Generate secure SHA-1, SHA-256, SHA-384, or SHA-512 hashes using the Web Crypto API.
Color Converter
Convert colors between HEX, RGB, HSL, and CMYK formats with a visual picker.
XML to JSON Converter
Convert complex XML documents into formatted JSON structures.
JSON to XML Converter
Convert JSON data structures back into formatted XML documents.
Regex Tester
Test and debug Regular Expressions visually in your browser.
Gross Profit Margin Calculator
Calculate gross profit margin, markup percentage, and total profit from cost of goods sold (COGS) and sale price.
Return on Investment (ROI) Calculator
Calculate net return on investment (ROI) percentage, net profit/loss, and 1-year / 5-year annualized ROI.
PayPal Merchant Fee Calculator
Calculate exact PayPal merchant fees for domestic and international transactions, including reverse calculations to know how much to invoice.
Stripe Fee Calculator
Calculate Stripe credit card processing fees for domestic (2.9% + $0.30) and international (4.4% + $0.30) payments with instant reverse invoicing math.
Temperature Converter
Convert temperatures seamlessly between Celsius, Fahrenheit, and Kelvin.
Length Converter
Convert length and distance between metric and imperial units.
Weight Converter
Convert mass and weight between kilograms, pounds, ounces, and more.
Volume Converter
Convert volume between liters, gallons, fluid ounces, and cups.
Color Picker from Image
Extract precise HEX and RGB colors directly from any image.
PDF Merger
Securely merge multiple PDF files into a single document directly in your browser.
Advanced Mortgage Calculator
Calculate your exact monthly mortgage payment including property taxes, HOA fees, and home insurance.
Cloud Infrastructure Cost Estimator
Estimate and compare monthly cloud infrastructure costs across AWS (EC2), Azure, and GCP including compute instances, block storage, and data egress.
Crypto Profit & Tax Calculator
Instantly calculate your net profit and capital gains tax from cryptocurrency trades.
Freelance Hourly Rate Calculator
Calculate your required freelance hourly rate based on target annual salary, business overhead expenses, vacation weeks, and billable utilization percentage.
College GPA Calculator
Calculate your college semester GPA instantly. Add classes, credits, and grades to see your exact 4.0 scale GPA.
Essay Word Counter & Analyzer
Count words, characters, and paragraphs for your academic essays. Instantly estimates reading level and speaking time.
Free PDF Invoice Generator
Create, preview, and download professional PDF invoices for your freelance business completely free.
AI Background Remover
Remove the background from any image instantly using in-browser Artificial Intelligence. 100% private and free.
PDF Splitter & Page Extractor
Split PDF files and extract custom page ranges locally in your browser with zero server uploads.
Google SERP Snippet Simulator
Preview how your web page appears on Google Desktop and Mobile search results with pixel width calculations.
UTM Campaign Tracking Link Builder
Generate standardized Google Analytics 4 (GA4) UTM tracking URLs for ads, newsletters, and social media campaigns.
Color Palette Generator
Generate complementary, analogous, triadic, and monochromatic color palettes with instant CSS export.
Word Frequency Counter & Keyword Density Tool
Analyze word recurrence, unique vocabulary, and keyword density percentages with stop-word filtering.
Social Media Character Limit Tester
Test copy length in real-time against character and word limits for Twitter/X, LinkedIn, Instagram, Google Ads, and SMS.
cURL to Code Converter
Convert raw cURL commands into JavaScript Fetch, Axios, Python Requests, and Go HTTP client code.
AI Embedding Cost & Vector Memory Calculator
Calculate vector embedding generation costs, dimensions, and HNSW Vector DB RAM requirements for RAG architectures.
Schema.org JSON-LD Structured Data Generator
Generate Google Rich Snippet-compatible JSON-LD structured data markup for Articles, FAQs, Software, Products, and Organizations.
SaaS Unit Economics & CAC / LTV Calculator
Calculate Customer Lifetime Value (LTV), Customer Acquisition Cost (CAC), Payback Period, and Rule of 40 score for SaaS businesses.
CIDR & IPv4 Subnet Mask Calculator
Compute network address, broadcast address, usable IP host ranges, binary notation, and wildcard mask from any IPv4 address and CIDR prefix.
Citation & Bibliography Generator
Generate instant, clean APA 7th, MLA 9th, Chicago, and Harvard references and in-text citations for websites, books, and journals.
Words to Pages Calculator
Convert word counts to exact document pages based on line spacing, font family, and font size for essays and research papers.
Final Grade Calculator
Calculate the exact exam score required to pass your course or earn your target letter grade.
Assignment Deadline & Schedule Planner
Break essays, research papers, and homework assignments into structured daily study milestones and writing targets.
AI Prompt Formatter & XML Tag Builder
Format high-performance system prompts using Anthropic-recommended XML tags and structured Markdown delimiters for Claude 3.5 Sonnet and GPT-4o.
A/B Testing Statistical Significance Calculator
Calculate conversion rate uplift, two-tailed Z-scores, and statistical significance confidence for A/B split tests.