Analyze
Examine and interpret data, text, and patterns to gain insights. Validate formats, detect patterns, assess performance, and understand complex information structures.
Token Calculator
Counts tokens in pasted text with OpenAI's o200k_base byte-pair tokenizer, exact for GPT-4o and newer and approximate for other providers.
Checksum Calculator
Compute MD5, SHA-1, SHA-256, SHA-384, SHA-512, and CRC32 checksums from text or file input directly in the browser.
Operations Ratios Calculator
Compute operational efficiency ratios from income statement and balance sheet data, covering margins, turnover, and the cash conversion cycle.
TRIZ Contradiction Matrix and Inventive Principles Tool
Looks up TRIZ inventive principles in Altshuller's 39 by 39 contradiction matrix from a chosen improving and worsening parameter pair.
Amazon Listing Preview Tool
Renders one row of an Amazon flat file as the product page it will become, with every value naming the spreadsheet cell...
Regex Tester
Test and debug regular expressions against a test string, listing each match with its index, capture groups, and an optional replacement preview.
Screen Resolution Simulator
Reports the browser's screen size, viewport size, device pixel ratio, and color depth on load and on every resize.
Web Code Validator and Formatter
Validate and format HTML, CSS, JavaScript, and YAML.
IP Subnet Calculator
Computes network, broadcast, wildcard, binary mask, and first/last usable host from IPv4 + mask or IPv6 + prefix, plus total addresses and...
Basic Color Contrast and Font Size Legibility Checker
Evaluate foreground and background color pairs against WCAG 2.
JSON Validator and Formatter
Validates JSON and either pretty-prints with two-space indentation or compresses to a single line.
Whitespace Formatter Tool
Improve text readability in large blocks of text or code by removing extra whitespace, standardizing heading formats, applying text transformations, and preserving...
Word and Character Count Tool
Counts words, characters with and without spaces, sentences, paragraphs, and average word length from any pasted or typed text.
What is My IP? Analyzer
Detects the visitor's public IPv4 and IPv6 addresses and resolves geolocation, ISP, ASN, organization, connection type, and timezone.
Text Comparison Tool
Diffs two text inputs (typed, pasted, or dropped as files) character by character, highlighting every insertion and deletion in both panels.
Word Counter
Counts words, characters with and without spaces, sentences, and paragraphs in pasted text, with optional Flesch reading score and reading-time estimate.
GTIN Digit Checker
Validate GTIN-8, GTIN-12 (UPC-A), GTIN-13 (EAN-13), GTIN-14, ISBN-10, and ISBN-13 barcodes by verifying or computing the check digit.
SaaS Churn Forecast
Projects MRR, active customers, churn count, and cumulative revenue month by month over a horizon up to 120 months.
Java Viewer
Paste Java source code and view it with syntax highlighting, line numbering, and code statistics such as comment density.
JSON Viewer
Parse, format, and explore JSON data through a collapsible tree view with expand and collapse controls at every nesting level.
Text Bigrams Generator
Extract word-level or character-level bigrams from any text and rank them by frequency, alphabetical order, or ascending count.
Meta Title and Description Length Checker Tool
Simulate how your website's meta title and meta description will appear in Google, Bing, and mobile search results.
Text N-Grams Generator
Extract word and character n-grams from any input text with ranked frequency counts and percentage breakdowns per sequence.
Code to Text Ratio Checker
Computes the visible text content ÷ total HTML markup ratio (as a percentage) from a live URL fetched through a CORS proxy...
Browser Detector Tool
Reports browser name and version, classic User Agent and User Agent Client Hints (UA-CH), OS, device memory, and a device-type heuristic.
JavaScript Tester
Run JavaScript code snippets directly in the browser and capture console output, return values, and runtime errors without any server or build...
Shop Audit Checklist
Audit your online shop across five key categories with a scored checklist tailored to Etsy, Amazon, Shopify, eBay, and Walmart.