Developer Toolkit
A blazing-fast, 100% client-side collection of 120 developer utilities. Your data never leaves your browser.
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Featured Tools
JSON Formatter / Validator
⭐ FeaturedFormat, validate, and beautify JSON with syntax highlighting.
Timestamp Converter
⭐ FeaturedConvert between Unix epoch and human-readable dates.
Color Converter & Palette
⭐ FeaturedConvert HEX, RGB, HSL colors and generate palettes with WCAG contrast checks.
Rich Text Editor
⭐ FeaturedA powerful EmEditor-inspired text editor with syntax highlighting, find/replace, bookmarks, and virtual scrolling.
HTTP Status Code Reference
⭐ FeaturedSearchable reference of all HTTP status codes with descriptions.
cURL to Code Converter
⭐ FeaturedConvert cURL commands to fetch, Python, PHP, Java, and Apex code.
JSON Formatter / Validator
Format, validate, and beautify JSON with syntax highlighting.
Base64 Encoder / Decoder
Encode and decode Base64 strings instantly.
URL Encoder / Decoder
Percent-encode or decode URL components.
UUID Generator
Generate cryptographically secure UUID v4 values in bulk.
Timestamp Converter
Convert between Unix epoch and human-readable dates.
Cron Expression Builder
Build, describe, and validate cron expressions visually with next-run preview.
Time Zone Converter
Convert times across IANA time zones, detect DST, and plan meetings with a shareable link.
QR Code Generator
Generate and scan QR codes for URLs, text, WiFi, and more. Fully offline.
Chmod Calculator
Calculate Unix file permissions visually — toggle rwx bits and get octal, symbolic, and command output.
.gitignore Generator
Combine .gitignore templates for 30+ languages, frameworks, and Salesforce DX. Fully offline.
Semver Calculator & Range Tester
Test if a version satisfies a semver range. Caret, tilde, hyphen, x-ranges. Bump major/minor/patch/prerelease.
JSON ↔ YAML Converter
Convert between JSON and YAML formats bidirectionally.
Number Base Converter
Convert numbers between Binary, Octal, Decimal, Hex, and more.
Color Converter & Palette
Convert HEX, RGB, HSL colors and generate palettes with WCAG contrast checks.
Markdown Preview
Write Markdown and see live HTML preview with GFM support.
SQL Formatter
Beautify SQL and SOQL queries with dialect-aware formatting.
SVG Optimizer
Minify and clean SVG markup with svgo — entirely in the browser.
Text Diff Tool
Compare two texts side-by-side with additions and deletions highlighted.
.env Editor
Edit, sort, dedupe, and convert .env files to JSON, YAML, and shell exports.
Color Palette Extractor
Extract dominant color palettes from images using k-means clustering.
Image Converter
Convert images between PNG, WebP, and JPEG formats entirely in the browser.
CSV to SQL
Convert CSV data to SQL INSERT statements or generate CREATE TABLE DDL with type inference.
JSON to TypeScript
Generate TypeScript interfaces and type aliases from JSON with nested types and optional fields.
XML / JSON Converter
Convert XML to JSON and back with attribute, namespace, and CDATA support.
HTML / Markdown Converter
Convert HTML to Markdown and back with GFM tables, code blocks, and sanitization.
Favicon Generator
Generate a complete favicon set from image, text, or emoji — including maskable PWA icons.
TOML ↔ JSON / YAML Converter
Convert TOML to JSON and YAML and back. Handles tables, arrays of tables, dotted keys.
EXIF Viewer & Stripper
View and strip EXIF metadata from JPEG photos. GPS, camera make/model, capture time. Files never leave your browser.
Lorem Ipsum Generator
Generate placeholder text in multiple styles.
Text Case Converter
Convert text to camelCase, snake_case, UPPER, Title, and more.
String Escape / Unescape
Escape and unescape HTML, JS, JSON, and XML strings.
Line Tools
Sort, deduplicate, reverse, trim, and number lines.
Word / Character Counter
Advanced word, character & keyword density counter with social media limits, readability scoring, and speech duration.
Rich Text Editor
A powerful EmEditor-inspired text editor with syntax highlighting, find/replace, bookmarks, and virtual scrolling.
ASCII & Unicode Art
Convert standard text into ASCII banners and stylized Unicode fonts (fraktur, bold, script, circled).
Markdown TOC Generator
Generate a markdown table of contents from headings. GitHub, GitLab, and MkDocs slug styles.
Unicode Codepoint Inspector
Inspect every codepoint with hex, Unicode block, and security flags for zero-width and confusable characters.
HTTP Status Code Reference
Searchable reference of all HTTP status codes with descriptions.
cURL to Code Converter
Convert cURL commands to fetch, Python, PHP, Java, and Apex code.
JSON Schema Generator
Auto-generate JSON Schema from sample JSON data.
API Response Mockup
Generate realistic mock API responses with fake data.
Query String Parser
Parse, edit, and rebuild URL query string parameters.
IP Address Tools
Validate IPv4/IPv6, calculate CIDR subnets, convert to binary/hex, and classify IP addresses.
CI/CD Workflow Builder
Visually build GitHub Actions workflows with live YAML preview, syntax validation, and starter templates.
GraphQL Query Builder
Visually build GraphQL queries, mutations, and subscriptions with fields, aliases, arguments, and nested selections.
Kubernetes Manifest Validator
Validate Kubernetes manifests and detect common misconfigurations.
HTTP Message Parser
Parse raw HTTP request and response messages into structured headers, body, and metadata.
DNS Lookup
Look up DNS records using DNS-over-HTTPS — A, AAAA, MX, TXT, NS, CNAME, and more.
Postman Inspector
Inspect Postman v2.1 collections — browse endpoints, detect anti-patterns, and export as cURL.
OpenAPI Viewer
View and validate OpenAPI 3.0/3.1 specs — browse endpoints, schemas, and examples offline.
WebSocket Tester
Connect to WebSocket and SSE endpoints, send messages, and inspect frames in real time.
Meta Tag Generator
Generate HTML meta tags for SEO, Open Graph, Twitter Cards, and JSON-LD with social previews.
Nginx Config Generator
Generate production-ready Nginx configs for SPA, reverse proxy, PHP-FPM, and Node.js with SSL and security headers.
robots.txt Validator & Tester
Validate robots.txt and test which user agents can fetch a path. Implements RFC 9309 longest-match rule.
Sitemap.xml Validator
Validate sitemap.xml against sitemaps.org spec. Catches invalid URLs, oversized files, and 50,000-URL limits.
SPF / DKIM / DMARC Inspector
Parse and explain SPF, DKIM, and DMARC TXT records. Surfaces RFC violations and weak DKIM keys.
Dockerfile Linter
Lint Dockerfiles against ~25 hadolint-style rules. Detects :latest tags, missing USER, apt-get caches, and shell-form CMDs.
Password Generator
Generate cryptographically strong passwords with entropy analysis.
Regex Tester
Test regular expressions with live highlighting and match details.
JWT Encoder / Decoder
Decode and inspect JSON Web Tokens with claim analysis.
Hash Generator
Compute MD5, SHA-1, SHA-256, SHA-512 hashes and HMAC signatures for text and files.
Data Masker & Anonymizer
Anonymize PII, API keys, Salesforce IDs, JWT tokens, and more with configurable masking profiles.
TOTP Generator
Generate TOTP and HOTP one-time passwords for testing 2FA flows. RFC 6238 compliant.
JWK Inspector
Inspect JWK key sets, decode JWS signed tokens, and analyze JWE encrypted tokens.
Key Pair Generator
Generate RSA and ECDSA key pairs in your browser — PEM, JWK, OpenSSH formats. Keys never leave your device.
AES Encrypt / Decrypt
AES-256-GCM encryption with PBKDF2 — runs entirely in your browser.
Certificate Generator
Generate self-signed X.509 certificates with SAN support — runs in your browser.
Text Encryptor
Encrypt and decrypt messages with a passphrase. AES-256-GCM under the hood.
SSH Key Generator
Generate Ed25519 and RSA SSH keys in your browser with optional passphrase encryption.
CSP Builder
Build Content-Security-Policy headers visually with directive toggles and framework presets.
CORS Builder
Build CORS headers visually with Express, Nginx, Apache, and Cloudflare Worker output.
SRI Hash Generator
Generate SHA-256, SHA-384, SHA-512 SRI hashes for script and link tags with batch and verify modes.
htpasswd Generator
Generate htpasswd entries (APR1 / SHA1 / plain) for nginx, Apache .htaccess, and Caddy basic auth. Runs in your browser.
LLM JSON Repair
Fix malformed JSON from ChatGPT, Claude, Gemini, and Llama output. Strips fences, comments, smart quotes, trailing commas.
LLM Cost Calculator
Calculate the cost of OpenAI, Anthropic, Google, Meta, and Mistral models per million tokens.
LLM Token Counter
Approximate token counts for ChatGPT, Claude, Gemini, and Llama. Counts characters, words, and tokens per family.
Prompt Template Tester
Test prompt templates with variables, conditionals, and loops. Mustache-flavored syntax for LLM workflows.
MCP Config Validator
Validate Model Context Protocol server configs for Claude Desktop, Cursor, and other MCP clients.
15 to 18 Char ID
Convert Salesforce 15-character IDs to 18-character case-safe IDs.
JSON to Apex Generator
Generate Apex wrapper classes from JSON structures.
Apex / SOQL Formatter
Format and beautify Apex and SOQL code.
CSV to JSON Converter
Convert between CSV and JSON formats with header detection.
Log Analyzer
Parse and filter Salesforce debug logs by event type.
SOQL Query Builder
Build SOQL queries visually with field autocomplete.
SF Object Field Analyzer
Analyze Salesforce object fields from describe API responses.
Permission Set Diff
Compare two Salesforce Permission Set XMLs side by side.
Deployment Status Dashboard
Visualize Salesforce deployment results with error details.
Debug Log Analyzer
Analyze Apex debug logs with flame tree, governor limits & SOQL breakdown.
LWC Scaffolder
Generate Lightning Web Component boilerplate files with a visual wizard.
Certificate Inspector
Inspect PEM-encoded X.509 certificates — subject, issuer, SANs, and expiry countdown.
Apex Code Metrics
Static analysis of Apex code — LOC, cyclomatic complexity, method classification, nesting depth.
Metadata Linter
Scan Profiles, Flows, and Objects for hardcoded IDs, missing descriptions, and outdated APIs.
Profile / Perm Set Merger
Merge two Salesforce Profile or Permission Set XMLs using Union, Intersection, or Target-Wins strategies.
Governor Limits Reference
Searchable reference of all Salesforce governor limits with sync/async values and best practices.
SF CLI Builder
Build Salesforce sf CLI commands visually with flag forms and a sfdx → sf converter.
Apex Trigger Scaffolder
Generate Apex trigger + handler class boilerplate with bulkified patterns and test class.
Named Credential Builder
Build Salesforce Named Credential + External Credential XML metadata visually.
Test Coverage Visualizer
Visualize Apex test coverage heatmaps from SFDX JSON output.
ERD Generator
Generate Entity Relationship Diagrams from Salesforce describe API JSON.
Flow Visualizer
Convert Salesforce Flow XML (.flow) into interactive Mermaid.js flowcharts offline.
SF Dependencies Viewer
Visualize Salesforce object, class, and flow dependencies from package.xml as a Mermaid graph.
Docker Compose Visualizer
Visualize Docker Compose services, networks, and volumes as an interactive diagram.
Regex Visualizer
Visualize regular expressions as railroad diagrams with plain-English explanations.
WCAG Contrast Checker
Test color contrast against WCAG 2.1 AA and AAA thresholds. Single-criterion checker for 1.4.3 / 1.4.6.
Mermaid Diagram Editor
Write Mermaid syntax with live SVG preview. Flowcharts, sequence diagrams, ERDs, Gantt, class diagrams.
OCAPI Request Builder
Legacy SFCC OCAPI builder — modern alternative: SCAPI Builder. Build OCAPI requests for Shop, Data, or Meta APIs.
Cartridge Path Manager
Visualize, reorder, and analyze SFCC cartridge paths — detect duplicates and missing base cartridges.
B2C Commerce Quotas
Searchable reference of all SFCC B2C Commerce quotas, rate limits, and platform constraints with best practices.
SCAPI Request Builder
Build SFCC SCAPI requests visually — Shopper and Admin APIs, SLAS auth, cURL/fetch/Apex/SFRA code.
ISML Linter
Lint SFCC ISML templates for XSS, performance, and deprecated patterns with configurable rules.
SFCC Job Schedule Analyzer
Visualize SFCC job schedules from Business Manager XML. Detect overlaps and peak-window conflicts.
SFCC Site Import Analyzer
Inspect SFCC site import/export XML archives. Entity counts, browser, and diff mode.
dw.json Validator & Builder
Build and validate SFCC dw.json configs. Catches bad hostnames, missing code-version, and credential mistakes.
SFCC Resource Bundle Diff
Compare SFCC .properties files across locales. Spot missing translations, extra keys, and value drift.
Custom Object Type XML Builder
Generate SFCC custom-objecttype-definitions.xml for site archives with key, scope, and typed attributes.
System Attributes XML Builder
Generate SFCC system-objecttype-extensions.xml. Add custom attributes to Product, Customer, Order, and other standard objects.
SLAS Client Config Builder
Build SLAS client configurations for B2C Commerce headless storefronts. Validates scopes, channels, and redirect URIs.
Custom SCAPI Builder
Generate Custom SCAPI api.json + schema.yaml for B2C Commerce. Define routes, methods, and OAuth scopes.
services.xml Generator
Build SFCC services.xml — services, profiles, and credentials. Validates references, timeouts, and circuit breaker settings.
Page Designer Component Generator
Generate SFCC Page Designer component_type metadata with attribute groups, region constraints, and ISML render skeleton.