# My Dev Tools catalog

Version 2.1.0. 147 tools across 15 categories.

Local tools run on your device. Network tools may contact selected endpoints or managed routes after an explicit action. Native database/storage connectors need the desktop app or an authenticated localhost runtime. This catalog contains public descriptions only.

## API & Web Services

- [Document Data Explorer](https://mydevtools.com/api-and-web-services/data-explorer): Browse and query MongoDB, Firestore and Elasticsearch with encrypted saved connections and type-aware exports. Processing: Network features · view data disclosure.
- [S3 Storage Browser](https://mydevtools.com/api-and-web-services/s3-browser): Browse S3-compatible buckets, prefixes and object metadata; transfer files with encrypted saved connections. Processing: Network features · view data disclosure.
- [Redis Browser](https://mydevtools.com/api-and-web-services/redis-browser): Scan keys, inspect typed values and run bounded Redis commands with encrypted saved connections. Processing: Network features · view data disclosure.
- [SQL Database Workspace](https://mydevtools.com/api-and-web-services/sql-client): Query SQLite files locally and connect to PostgreSQL, MySQL and MariaDB with encrypted saved connections. Processing: Network features · view data disclosure.
- [GraphQL Schema & Operation Explorer](https://mydevtools.com/api-and-web-services/graphql-explorer): Validate GraphQL operations against an SDL schema locally. Processing: Local processing.
- [Swagger / OpenAPI Viewer](https://mydevtools.com/api-and-web-services/swagger-ui): Paste or upload an OpenAPI spec and get interactive API documentation. Processing: Network features · view data disclosure.
- [AsyncAPI Explorer](https://mydevtools.com/api-and-web-services/asyncapi-explorer): Inspect AsyncAPI event contracts, channels, operations, servers, and messages. Processing: Local processing.
- [OAuth / OIDC & PKCE Playground](https://mydevtools.com/api-and-web-services/oauth-oidc-playground): Inspect OAuth discovery metadata and generate local PKCE S256 values. Processing: Local processing.
- [API Request Builder](https://mydevtools.com/api-and-web-services/api-request-builder): Test HTTP and gRPC APIs, run request collections and start local mock servers. Processing: Network features · view data disclosure.
- [JSONPath Tester](https://mydevtools.com/api-and-web-services/json-path-tester): Query JSON with JSONPath or JMESPath, with examples and precision-aware input handling. Processing: Local processing.
- [URL Parser](https://mydevtools.com/api-and-web-services/url-parser): Parse and analyze URLs into components: protocol, host, path, query, fragment. Processing: Local processing.
- [WSDL Parser](https://mydevtools.com/api-and-web-services/wsdl-parser): Parse and visualize WSDL files, view services, ports, operations, and messages. Processing: Network features · view data disclosure.
- [SOAP Client](https://mydevtools.com/api-and-web-services/soap-client): Test SOAP web services by sending requests and viewing responses. Processing: Network features · view data disclosure.

## Image & Media

- [Code Screenshot](https://mydevtools.com/image-and-media/code-screenshot): Create syntax-highlighted code images with themes, backgrounds, window controls and real PNG export. Processing: Local processing.
- [Image Compressor](https://mydevtools.com/image-and-media/image-compressor): Compress JPEG, PNG and WebP in your browser with quality slider and live before/after preview. Processing: Local processing.
- [Image Resizer](https://mydevtools.com/image-and-media/image-resizer): Resize JPEG, PNG and WebP by pixels, percentage, or preset — fit, fill or stretch, all in your browser. Processing: Local processing.
- [SVG Optimizer](https://mydevtools.com/image-and-media/svg-optimizer): Shrink SVG markup by stripping editor metadata, collapsing transforms and rounding numeric precision. Processing: Local processing.
- [Favicon, ICO & Maskable Generator](https://mydevtools.com/image-and-media/favicon-generator): Generate PNG favicons, a six-size ICO, a safe-zone maskable icon and matching manifest in one ZIP. Processing: Local processing.
- [Color Palette Extractor](https://mydevtools.com/image-and-media/color-palette-extractor): Extract the dominant colours from any image — outputs HEX, RGB and HSL values ready to copy. Processing: Local processing.
- [Image Metadata Viewer & Remover](https://mydevtools.com/image-and-media/exif-viewer): Inspect image metadata, remove JPEG/PNG/WebP metadata without re-encoding, and convert supported formats locally. Processing: Local processing.

## Generators

- [Docker Compose Generator](https://mydevtools.com/generators/docker-compose-generator): Configure a local stack with service starters, ports, named volumes, environment variables and dependencies. Processing: Local processing.
- [CSS Visual Builders](https://mydevtools.com/generators/css-generators): Design multi-layer shadows, elliptical radii, fluid typography and configurable gradients with live previews. Processing: Local processing.
- [.gitignore Generator](https://mydevtools.com/generators/gitignore-generator): Combine stack, editor and operating-system ignore patterns with custom overrides. Processing: Local processing.
- [JSON Schema & Model Generator](https://mydevtools.com/generators/json-schema-generator): Infer JSON Schema from sample data and generate typed models for nine languages. Processing: Local processing.
- [UUID Generator & Inspector](https://mydevtools.com/generators/uuid-generator): Generate UUIDv3/v5 namespace IDs, random UUIDv4, time-ordered UUIDv7 and ULIDs; inspect versions and timestamps. Processing: Local processing.
- [Password Generator](https://mydevtools.com/generators/password-generator): Generate secure random passwords with customizable length and character sets. Processing: Local processing.
- [Credit Card Generator](https://mydevtools.com/generators/credit-card-generator): Generate synthetic Luhn-valid card fixtures with security codes and expiry dates. Processing: Local processing.
- [Lorem Ipsum Generator](https://mydevtools.com/generators/lorem-ipsum): Generate placeholder text in paragraphs, sentences, or words. Processing: Local processing.
- [QR Code Generator](https://mydevtools.com/generators/qrcode-generator): Generate QR codes from text, URLs, or data with customization options. Processing: Local processing.
- [Markdown Table Generator](https://mydevtools.com/generators/markdown-table): Create and edit markdown tables with a visual spreadsheet interface. Processing: Local processing.
- [Java POJO Generator](https://mydevtools.com/generators/java-pojo-generator): Generate Java classes, records, interfaces from JSON/XML or convert Java to JSON/XML. Processing: Local processing.
- [JSON to TypeScript](https://mydevtools.com/generators/json-to-typescript): Convert JSON objects to TypeScript interfaces and types automatically. Processing: Local processing.
- [Slug Generator](https://mydevtools.com/generators/slug-generator): Generate URL-safe slugs from any text — supports unicode, custom separators. Processing: Local processing.
- [Color Contrast Checker](https://mydevtools.com/generators/color-contrast-checker): Check WCAG contrast ratios between foreground and background colors. Processing: Local processing.

## Text & Utilities

- [JSON Graph Visualizer](https://mydevtools.com/text-and-utilities/json-visualizer): Explore JSON with pan, zoom, branch collapse, path search, array tables and SVG/PNG export. Processing: Local processing.
- [User-Agent & Client Hints Parser](https://mydevtools.com/text-and-utilities/user-agent-parser): Inspect reported browser, OS, engine, device and CPU details locally. Processing: Local processing.
- [Keyboard Event Inspector](https://mydevtools.com/text-and-utilities/keycode-inspector): Inspect key, code, modifiers, locations and browser keyboard event history. Processing: Local processing.
- [Timezone Planner](https://mydevtools.com/text-and-utilities/timezone-planner): Compare meeting times, UTC offsets, date shifts and working hours across IANA timezones. Processing: Local processing.
- [Resource Bookmarks](https://mydevtools.com/text-and-utilities/resource-bookmarks): Organize project documentation, repositories and external links. Processing: Local processing.
- [Code Snippets](https://mydevtools.com/text-and-utilities/code-snippets): Save, search, format and copy project code snippets with syntax highlighting. Processing: Local processing.
- [Tool Tabs](https://mydevtools.com/text-and-utilities/tool-workbench): Keep multiple tools open, switch and reorder tabs without losing input. Processing: Local processing.
- [Project Workspaces](https://mydevtools.com/text-and-utilities/project-workspaces): Keep project notes, snippets, workflows and connections separate. Processing: Local processing.
- [Saved Workflows](https://mydevtools.com/text-and-utilities/saved-workflows): Chain local tools and save repeatable transformations with settings and fixtures. Processing: Local processing.
- [HAR & Log Redactor](https://mydevtools.com/text-and-utilities/har-log-redactor): Redact credentials and custom fields from HAR, JSON, and logs locally. Processing: Local processing.
- [Text Manipulation Tools](https://mydevtools.com/text-and-utilities/text-tools): Sort lines, remove duplicates, trim whitespace, count words and more. Processing: Local processing.
- [Markdown Preview](https://mydevtools.com/text-and-utilities/markdown-preview): Write Markdown and see a live rendered preview side by side. Processing: Local processing.
- [Mermaid Viewer](https://mydevtools.com/text-and-utilities/mermaid-viewer): Render and preview Mermaid diagrams with live editing, theme support, and SVG export. Processing: Local processing.
- [String Case Converter](https://mydevtools.com/text-and-utilities/case-converter): Convert text between camelCase, snake_case, PascalCase, kebab-case and more. Processing: Local processing.
- [Timestamp Converter](https://mydevtools.com/text-and-utilities/timestamp-converter): Convert between Unix timestamps and human-readable dates. Processing: Local processing.
- [Color Picker & Converter](https://mydevtools.com/text-and-utilities/color-picker): Pick colors and convert between HEX, RGB, HSL formats. Processing: Local processing.
- [Number Base Converter](https://mydevtools.com/text-and-utilities/number-base): Convert exact signed integers between any bases from 2 through 36. Processing: Local processing.
- [Unix Permissions Calculator](https://mydevtools.com/text-and-utilities/unix-permissions): Calculate chmod numeric values and understand file permission bits. Processing: Local processing.
- [Cron Expression Parser](https://mydevtools.com/text-and-utilities/cron-parser): Parse, validate and explain cron expressions with next run times. Processing: Local processing.
- [Personal Todo List](https://mydevtools.com/text-and-utilities/todo-list): Production-grade task manager with IndexedDB storage, categories, archive, trash, import/export, subtasks, and more. Processing: Local processing.
- [Sticky Notes](https://mydevtools.com/text-and-utilities/sticky-notes): Create, organize, and persist colorful sticky notes in your browser — pin, color-code, search, and delete with full localStorage memory. Processing: Local processing.
- [Rich Text Editor](https://mydevtools.com/text-and-utilities/rich-text-editor): WYSIWYG document editor with full formatting (bold, headings, lists, links, colors), multiple documents, local save, source view, and export. Processing: Local processing.

## Network

- [Domain & IP Registration (RDAP)](https://mydevtools.com/network/whois-rdap): Look up public domain/IP registration, registrars, events, statuses and nameservers. Processing: Uses the mydevtools server.
- [Trace Context Inspector](https://mydevtools.com/network/trace-context-inspector): Inspect and generate W3C traceparent and tracestate headers. Processing: Local processing.
- [IP Address Tools](https://mydevtools.com/network/ip-address-tools): Validate, parse, and convert IPv4/IPv6 addresses with detailed information. Processing: Local processing.
- [Subnet Calculator](https://mydevtools.com/network/subnet-calculator): Calculate subnet masks, network ranges, CIDR notation, and available hosts. Processing: Local processing.
- [MAC Address Tools](https://mydevtools.com/network/mac-address-tools): Validate, format, and generate MAC addresses with vendor lookup. Processing: Local processing.
- [Webhook Receiver](https://mydevtools.com/network/webhook-receiver): Generate a unique inbound URL, capture incoming HTTP requests in real time, and inspect headers and body. Processing: Uses the mydevtools server.
- [WebSocket Tester](https://mydevtools.com/network/websocket-tester): Connect to ws:// and wss:// endpoints, send messages, watch frames stream in with timestamped history. Processing: Connects directly from your browser.
- [CORS Tester](https://mydevtools.com/network/cors-tester): Test requests from this browser origin, inspect exposed CORS headers and review possible causes of opaque failures. Processing: Network features · view data disclosure.
- [DNS Lookup](https://mydevtools.com/network/dns-lookup): Resolve A, AAAA, CNAME, MX, TXT, NS, SOA records for any hostname using public DNS-over-HTTPS resolvers. Processing: Connects directly from your browser.
- [Security Headers & CSP Analyzer](https://mydevtools.com/network/security-headers-analyzer): Audit pasted HTTP response headers and Content Security Policy rules. Processing: Local processing.
- [Docker Compose Analyzer](https://mydevtools.com/network/docker-compose-analyzer): Review Compose YAML services, ports, networks, volumes, and hygiene. Processing: Local processing.

## Data Converters

- [Scientific Unit Converter](https://mydevtools.com/data-converters/unit-converter): Convert physical, electrical, thermal and engineering quantities with explicit unit definitions. Processing: Local processing.
- [XML to JSON Converter](https://mydevtools.com/data-converters/xml-to-json): Convert XML documents to JSON format with attribute handling options. Processing: Local processing.
- [JSON to XML Converter](https://mydevtools.com/data-converters/json-to-xml): Convert JSON objects to well-formed XML documents. Processing: Local processing.
- [CSV to JSON Converter](https://mydevtools.com/data-converters/csv-to-json): Convert CSV data to JSON arrays or objects with header detection. Processing: Local processing.
- [CSV to XML Converter](https://mydevtools.com/data-converters/csv-to-xml): Convert CSV data to XML format with customizable element names. Processing: Local processing.
- [YAML ↔ JSON Converter](https://mydevtools.com/data-converters/yaml-json-converter): Convert between YAML and JSON formats bidirectionally. Processing: Local processing.
- [XSLT Transformer](https://mydevtools.com/data-converters/xslt-transformer): Transform XML documents using XSLT stylesheets. Processing: Local processing.
- [JSON to CSV Converter](https://mydevtools.com/data-converters/json-to-csv): Convert JSON arrays and objects to CSV with custom delimiters and headers. Processing: Local processing.
- [Mock Data Generator](https://mydevtools.com/data-converters/mock-data-generator): Generate fake but realistic data (names, emails, dates, lorem) as JSON, CSV or SQL inserts. Processing: Local processing.
- [JSON / YAML / TOML / XML Converter](https://mydevtools.com/data-converters/toml-converter): Convert in all twelve directions between JSON, YAML, TOML and XML with explicit mapping limits. Processing: Local processing.
- [TOON Converter](https://mydevtools.com/data-converters/toon-converter): Convert JSON or XML to TOON (Token-Oriented Object Notation) — a compact, LLM-friendly format with live character savings. Processing: Local processing.

## Cryptography

- [TOTP Generator](https://mydevtools.com/cryptography/totp-generator): Generate local RFC 6238 authenticator codes with configurable time-step and public test vectors. Processing: Local processing.
- [Secure Files](https://mydevtools.com/cryptography/secure-files): Encrypt file contents and metadata locally with portable backups. Processing: Local processing.
- [Credential Vault](https://mydevtools.com/cryptography/credential-vault): Encrypt passwords, API keys, environment variables and saved connections locally. Processing: Local processing.
- [Webhook Signature Debugger](https://mydevtools.com/cryptography/webhook-signature-debugger): Verify GitHub, Stripe, Slack, and HMAC webhook signatures locally. Processing: Local processing.
- [Hash Generator](https://mydevtools.com/cryptography/hash-generator): Generate MD5, SHA-1, SHA-2, Keccak and RIPEMD-160 text hashes. Processing: Local processing.
- [HMAC Generator](https://mydevtools.com/cryptography/hmac-generator): Generate HMAC signatures using SHA-1, SHA-256, SHA-384, SHA-512 algorithms. Processing: Local processing.
- [JWT Decoder](https://mydevtools.com/cryptography/jwt-decoder): Decode and inspect JSON Web Tokens — header, payload and signature. Processing: Local processing.
- [JWS Sign & Verify](https://mydevtools.com/cryptography/jws-tool): Create and verify JSON Web Signatures (JWS) with HMAC, RSA, and ECDSA algorithms. Processing: Local processing.
- [JWE Encrypt & Decrypt](https://mydevtools.com/cryptography/jwe-tool): Encrypt and decrypt data using JSON Web Encryption (JWE) with RSA and AES algorithms. Processing: Local processing.
- [JWK Generator](https://mydevtools.com/cryptography/jwk-generator): Generate JSON Web Keys (JWK) for RSA, EC, and symmetric algorithms. Processing: Local processing.
- [BCrypt Hash & Verify](https://mydevtools.com/cryptography/bcrypt-tool): Generate BCrypt hashes for passwords and verify passwords against existing hashes. Processing: Local processing.
- [AES Encrypt & Decrypt](https://mydevtools.com/cryptography/aes-tool): Encrypt and decrypt CryptoJS-compatible AES-CBC passphrase text locally. Processing: Local processing.

## Formatters

- [JSON Formatter](https://mydevtools.com/formatters/json-formatter): Prettify, minify and validate JSON with syntax highlighting and tree view. Processing: Local processing.
- [XML Formatter](https://mydevtools.com/formatters/xml-formatter): Format, prettify and validate XML documents. Processing: Local processing.
- [SQL Formatter](https://mydevtools.com/formatters/sql-formatter): Format and beautify SQL queries. Processing: Local processing.
- [HTML Formatter](https://mydevtools.com/formatters/html-formatter): Format, prettify and beautify HTML documents with customizable indentation. Processing: Local processing.
- [JavaScript Formatter](https://mydevtools.com/formatters/js-formatter): Beautify and minify JavaScript code with configurable options. Processing: Local processing.
- [CSS Formatter](https://mydevtools.com/formatters/css-formatter): Beautify and minify CSS stylesheets with vendor prefix handling. Processing: Local processing.
- [YAML Formatter](https://mydevtools.com/formatters/yaml-formatter): Format, validate and beautify YAML documents with indent control. Processing: Local processing.
- [Mermaid Formatter](https://mydevtools.com/formatters/mermaid-formatter): Format, validate and beautify Mermaid diagrams and flowcharts. Processing: Local processing.

## Validators

- [JSON Validator](https://mydevtools.com/validators/json-validator): Validate JSON syntax with detailed error messages and line numbers. Processing: Local processing.
- [XML Validator](https://mydevtools.com/validators/xml-validator): Validate XML syntax and well-formedness with error highlighting. Processing: Local processing.
- [HTML Validator](https://mydevtools.com/validators/html-validator): Validate HTML markup for errors and best practices. Processing: Local processing.
- [XSD Schema Validator](https://mydevtools.com/validators/xsd-validator): Check XML well-formedness, root names and namespaces alongside a parsed XSD. Processing: Local processing.
- [Credit Card Validator](https://mydevtools.com/validators/credit-card-validator): Validate and generate test credit card numbers with Luhn algorithm. Processing: Local processing.
- [JSON Schema Workbench](https://mydevtools.com/validators/json-schema-workbench): Validate JSON and YAML instances against local JSON Schema rules. Processing: Local processing.
- [Regex Tester](https://mydevtools.com/validators/regex-tester): Test regular expressions with live matching and group highlighting. Processing: Local processing.
- [XPath Tester](https://mydevtools.com/validators/xpath-tester): Test and evaluate XPath expressions against XML documents. Processing: Local processing.
- [Email Validator](https://mydevtools.com/validators/email-validator): Inspect email syntax and disposable-domain signals. Processing: Connects directly from your browser.

## Diff & Compare

- [JSON Diff](https://mydevtools.com/diff-and-compare/json-diff): Compare two JSON documents side by side with highlighted differences. Processing: Local processing.
- [OpenAPI Contract Diff](https://mydevtools.com/diff-and-compare/openapi-contract-diff): Compare OpenAPI contracts and flag high-confidence breaking changes. Processing: Local processing.
- [XML Diff](https://mydevtools.com/diff-and-compare/xml-diff): Compare two XML documents side by side with highlighted differences. Processing: Local processing.
- [Text Diff](https://mydevtools.com/diff-and-compare/text-diff): Compare any two text blocks with line-by-line diff highlighting. Processing: Local processing.
- [Image Diff](https://mydevtools.com/diff-and-compare/image-diff): Pixel-perfect visual comparison: side-by-side, overlay, and difference modes with adjustable tolerance. Processing: Local processing.
- [CSV Diff](https://mydevtools.com/diff-and-compare/csv-diff): Row-keyed CSV comparison with column-level change highlighting — handles added, removed, and modified rows. Processing: Local processing.

## Encoding & Decoding

- [Base64 Encode / Decode](https://mydevtools.com/encoding-and-decoding/base64): Encode and decode Base64 strings instantly. Processing: Local processing.
- [URL Encode / Decode](https://mydevtools.com/encoding-and-decoding/url-encoder): Encode and decode URL components. Processing: Local processing.
- [HTML Entities Encoder](https://mydevtools.com/encoding-and-decoding/html-entities): Encode and decode HTML entities and special characters. Processing: Local processing.
- [Unicode Converter](https://mydevtools.com/encoding-and-decoding/unicode-converter): Convert text to/from Unicode escape sequences, code points, and UTF-8 hex. Processing: Local processing.
- [Gzip Compress / Decompress](https://mydevtools.com/encoding-and-decoding/gzip-tools): Compress and decompress text using Gzip with Base64 encoding. Processing: Local processing.
- [String Escape / Unescape](https://mydevtools.com/encoding-and-decoding/string-escape): Escape and unescape strings for JSON, XML, HTML, JavaScript, SQL, and CSV. Processing: Local processing.
- [Hex Encoder / Decoder](https://mydevtools.com/encoding-and-decoding/hex-converter): Encode text to hexadecimal and decode hex strings back to text (UTF-8). Processing: Local processing.

## Certificates & Keys

- [Certificate Inspector](https://mydevtools.com/certificates-and-keys/certificate-inspector): Decode, fingerprint and convert X.509 certificates in PEM or DER; inspect live certificates from permitted public hosts.. Processing: Network features · view data disclosure.
- [Certificate Chain & SSL](https://mydevtools.com/certificates-and-keys/certificate-chain-validator): Inspect live certificate chains through a disclosed server connection, or analyze pasted certificates locally. Processing: Uses the mydevtools server.
- [Certificate & CSR Generator](https://mydevtools.com/certificates-and-keys/certificate-generator): Generate self-signed X.509 certificates and Certificate Signing Requests (CSR) with RSA / ECDSA keys. Processing: Local processing.
- [PKCS#12 / PFX Tool](https://mydevtools.com/certificates-and-keys/pkcs12-tool): Create, extract, and convert PKCS#12/PFX files containing certificates and private keys. Processing: Local processing.
- [Java KeyStore (JKS) Tool](https://mydevtools.com/certificates-and-keys/jks-tool): Build PKCS#12 files from PEM and prepare Java keytool commands for JKS workflows. Processing: Local processing.
- [Key Pair Generator](https://mydevtools.com/certificates-and-keys/key-pair-generator): Generate RSA, ECDSA, and Ed25519 key pairs in PEM and other formats. Processing: Local processing.
- [SSH Key Generator](https://mydevtools.com/certificates-and-keys/ssh-key-generator): Generate local RSA, ECDSA and Ed25519 OpenSSH keys with SHA-256 fingerprints. Processing: Local processing.
- [WebAuthn / Passkey Playground](https://mydevtools.com/certificates-and-keys/webauthn-passkey-playground): Inspect WebAuthn credential response metadata locally. Processing: Local processing.

## Artificial Intelligence

- [MCP Inspector](https://mydevtools.com/artificial-intelligence/mcp-inspector): Connect to any Model Context Protocol server, browse tools, and call them interactively over SSE or HTTP. Processing: Network features · view data disclosure.
- [A2A Inspector](https://mydevtools.com/artificial-intelligence/a2a-inspector): Inspect Agent-to-Agent cards, check selected fields, exchange messages and view raw JSON-RPC 2.0 responses. Processing: Network features · view data disclosure.
- [LLM Token Counter](https://mydevtools.com/artificial-intelligence/token-counter): Count tokens and estimate context-window usage across GPT, Claude, and open models. Processing: Connects directly from your browser.
- [Fine-Tuning Dataset Validator](https://mydevtools.com/artificial-intelligence/jsonl-validator): Validate JSONL fine-tuning datasets against OpenAI or Anthropic message schemas — entirely in your browser. Processing: Local processing.
- [Agent Card / MCP Manifest Generator](https://mydevtools.com/artificial-intelligence/agent-manifest-generator): Build a valid A2A agent-card.json or MCP server config, then send it straight to the A2A or MCP inspector to test. Processing: Local processing.
- [Semantic Search Playground](https://mydevtools.com/artificial-intelligence/rag-search): Real embedding-based search over your own text, computed entirely in your browser — no server, no API key. Processing: Network features · view data disclosure.

## Reference

- [HTTP Status Codes Reference](https://mydevtools.com/reference/http-status-codes): Selected HTTP status codes with explanations, examples and primary sources. Processing: Local processing.
- [MIME Types Reference](https://mydevtools.com/reference/mime-types): Comprehensive searchable database of MIME types (Content-Types) with file extensions, categories, and usage examples for web development, file uploads, and HTTP headers. Processing: Local processing.
- [Port Number Reference](https://mydevtools.com/reference/port-reference): Local reference of selected common ports, protocols and service conventions. Processing: Local processing.
- [Model & Pricing Comparison](https://mydevtools.com/reference/model-pricing-reference): Compare context windows, output limits and per-token pricing across major LLM providers. Processing: Local processing.
- [IP Ranges Reference](https://mydevtools.com/reference/ip-ranges-reference): Reference guide for private, reserved, and special-use IP address ranges. Processing: Local processing.
- [RFC Standards Reference](https://mydevtools.com/reference/rfc-standards): Selected RFCs with explanations, maturity levels and replacement links. Processing: Local processing.

## Fun & Games

- [Coin Toss](https://mydevtools.com/fun-and-games/coin-toss): Flip a fair virtual coin with 3D animation — heads or tails with flip statistics. Processing: Local processing.
- [Dice Roll](https://mydevtools.com/fun-and-games/dice-roll): Roll polyhedral dice (d4–d20) with advantage/disadvantage mode for TTRPGs and probability experiments. Processing: Local processing.
- [Timer](https://mydevtools.com/fun-and-games/timer): Countdown timer with presets, custom duration, audio chime, and Pomodoro support — runs entirely in your browser. Processing: Local processing.
- [Stopwatch](https://mydevtools.com/fun-and-games/stopwatch): Browser stopwatch with lap splits, best/worst lap highlighting and a millisecond display; timing depends on browser scheduling. Processing: Local processing.
- [Spin the Wheel](https://mydevtools.com/fun-and-games/spin-wheel): Animated prize wheel — add up to 12 custom options and spin to pick a random winner. Processing: Local processing.
- [Magic 8-Ball](https://mydevtools.com/fun-and-games/magic-8ball): Ask a yes/no question and let the classic Magic 8-Ball reveal your fate with all 20 original responses. Processing: Local processing.
- [Typing Speed Test](https://mydevtools.com/fun-and-games/typing-test): Measure your WPM with real-time character highlighting, accuracy tracking, and timed test modes. Processing: Local processing.