All Tools - Page 5
201 tools available
Page 5 of 9
JSON Schema Generator (with AI Tool-Call Builder)
Generate JSON Schema, TypeScript types, Zod schemas, and Python TypedDicts from sample JSON. Build OpenAI, Anthropic, and Gemini tool-call schemas with a visual parameter editor. 100% in your browser.
JSON to CSV Converter
Convert JSON data to CSV format with multiple input options. Paste JSON data, load from URL, or upload a file to convert to CSV.
JSON to HTML Converter
Convert JSON data to HTML table format with multiple input options. Paste JSON data, load from URL, or upload a file to convert to HTML table.
JSON to TSV Converter
Convert JSON data to TSV (Tab-Separated Values) format with multiple input options. Paste JSON data, load from URL, or upload a file to convert to TSV.
JSON to TypeScript
Convert JSON data into TypeScript interfaces or type aliases. Infers types from values, handles nested objects, arrays, and optional fields. Powered by quicktype-core.
JSON to XML Converter
Convert JSON data to XML format with multiple input options. Paste JSON data, load from URL, or upload a file to convert to structured XML.
JSON to YAML Converter
Convert JSON data to YAML format with multiple input options. Paste JSON data, load from URL, or upload a file to convert to YAML.
JSON Validator
Validate JSON input for proper structure and syntax. Format, minify, and analyze JSON data. Perfect for debugging API payloads or configuration files.
JWT Decoder
Paste a JWT (JSON Web Token) and decode its header and payload. Useful for developers to inspect JWT contents without verification.
JWT Encoder
Create and encode JSON Web Tokens (JWT) with custom header, payload, and secret key. Perfect for developers testing JWT implementation.
Key Pair Generator
Generate cryptographically-secure RSA, ECDSA, and Ed25519 public/private key pairs entirely in your browser. Output in PEM, JWK, or SSH format for use with OpenSSL, JWT signing, SSH ~/.ssh/authorized_keys, TLS certificates, cryptocurrency wallets, and any asymmetric-crypto use case. Keys are generated via the Web Crypto API — the same primitives browsers use for TLS — and never leave your device.
Leap Year Checker
Check if any year is a leap year and explore leap year patterns. Find next and previous leap years with detailed explanations of the leap year rules.
Length Converter
Convert between different units of length measurement including millimeters, centimeters, meters, kilometers, inches, feet, yards, miles, and more. Quick and accurate length conversions.
Line Break Remover / Adder
Add or remove line breaks from text. Useful for formatting text, converting between single-line and multi-line formats, or preparing text for different contexts.
List Randomizer & Picker
Randomize lists and pick random items. Shuffle list items in random order or select random items from your list with customizable options — all in your browser, with no data sent anywhere.
LLM Token Counter & Cost Estimator
Count tokens for any LLM prompt and estimate API cost across GPT-5, Claude 4.7, Gemini 3, Grok 4, DeepSeek R1, and Llama 4. Visualise tokens, see context-window utilisation, and compare models side-by-side — all in your browser.
Lorem Ipsum Generator
Generate placeholder text for design or testing. Create Lorem Ipsum text with customizable paragraphs, words, and sentences.
Luminosity Converter
Convert between different luminosity and illuminance units including candela, lumen, lux, foot-candle, and nit. Accurate conversions for lighting calculations.
Magnetic Flux Density Converter
Convert between different units of magnetic flux density measurement including tesla, gauss, weber per square meter, gamma, and more. Essential for physics, engineering, and magnetic field applications.
Markdown to HTML & HTML to Markdown Converter
Convert Markdown to HTML and HTML to Markdown. Transform between formats for web publishing, documentation, and content editing. Bidirectional conversion tool.
Markdown Viewer & Preview
Preview and render Markdown content in real-time. View formatted output, export to HTML, and test your Markdown syntax with live updates and multiple theme options.
MD5 Hash Generator & Verifier
Generate MD5 hashes from text input and verify text against existing MD5 hashes. MD5 produces a 128-bit hash value but is cryptographically broken - use only for non-security applications like checksums.
Mermaid Diagram Live Editor
Write and preview Mermaid diagrams (flowchart, sequence, gantt, class, state, ER, pie, journey, mindmap, timeline) live as you type. Pick a theme, export as SVG or PNG, copy as markdown — all in your browser.
Meta Tag Generator
Generate essential HTML meta tags for your webpage including title, description, Open Graph, Twitter Cards, and SEO meta tags. Perfect for improving social media sharing and search engine optimization.