devstation.
The browser-native developer toolbox. Generate, convert, inspect, format, debug, and customize tools — entirely in your browser.
Explore Developer Tools (56)
API Token & Key Generator
Generate cryptographically secure random API keys, secrets, hex tokens, and custom strings.
Secure Password Generator
Generate high-entropy passwords with custom length, character sets, and strength meter.
UUID & NanoID Generator
Batch generate UUID v4, NanoID, and cryptographically random unique identifiers.
Cryptographic Hash & HMAC
Calculate MD5, SHA-1, SHA-256, SHA-384, SHA-512, and HMAC digests instantly.
JWT Inspector & Decoder
Decode and inspect JWT headers, payloads, claims, expiration dates, and signatures.
Base64 & Base64URL Converter
Encode and decode standard Base64 and URL-safe Base64 strings with live updates.
URL & HTML Entities Encoder
URL encode/decode, HTML special character entities escape, and Unicode converters.
JSON Formatter & Validator
Format, minify, sort keys, remove empty values, repair malformed JSON, and validate schemas.
JSON to TypeScript / Zod / Schema
Transform arbitrary JSON into TypeScript interfaces, Zod schemas, Python dataclasses, Go structs, and SQL.
JSON Diff & Comparison
Compare two JSON payloads and inspect deep structural additions, modifications, and removals.
CSV ↔ JSON & Table Viewer
Convert CSV to JSON arrays, JSON to CSV, preview data in an interactive table, and extract columns.
YAML ↔ JSON Converter
Validate YAML syntax and bidirectionally convert between YAML and JSON formatting.
XML Formatter & JSON Converter
Beautify, format, validate XML documents, and convert XML to JSON and vice-versa.
HTTP Request & cURL Code Generator
Build HTTP requests visually and generate cURL, Fetch, Axios, Python Requests, Go, and Java code.
URL Builder & Query Parser
Parse URLs into origin, path, and query params. Edit query parameters visually and reassemble.
HTTP Status Codes Reference
Comprehensive lookup for all HTTP response status codes (1xx - 5xx) with RFC definitions.
MIME Types Lookup
Search and resolve MIME types, file extensions, and Content-Type response headers.
Code & Text Diff Checker
Compare two code blocks or text files with side-by-side highlighting of differences.
HTML to JSX / React Converter
Cleanly convert standard HTML code into React/JSX with className, inline style objects, and self-closing tags.
Variable & Text Case Converter
Convert names between camelCase, PascalCase, snake_case, kebab-case, and CONSTANT_CASE.
Code Minifier & Cleaner
Minify and strip comments/whitespace from JavaScript, CSS, HTML, and SQL snippets.
Code Metrics & Line Counter
Count total lines, non-empty lines, comment lines, words, and characters in source files.
SQL Formatter & Beautifier
Format, beautify, and indent SQL queries with customizable uppercase keywords.
SQL Query Generator
Interactive visual builder for CREATE TABLE, INSERT INTO, SELECT WHERE, and UPDATE statements.
SQL Schema to TypeScript / Zod / Prisma
Parse SQL CREATE TABLE statements and generate TypeScript types, Zod schemas, and Prisma models.
Dockerfile Generator
Interactive generator for production-ready multi-stage Dockerfiles (Node.js, Python, Go, Rust, Static).
Docker Compose Builder
Generate docker-compose.yml with multi-service setups: App, PostgreSQL, Redis, Nginx.
Cron Expression Generator & Explainer
Visual cron schedule builder and human-readable cron explainer with execution schedules.
Linux chmod Permission Calculator
Visual permission matrix for Owner, Group, Public with octal (755, 644) and symbolic commands.
Environment Variables (.env) Builder
Generate, format, and validate `.env` files with secret masking and `.env.example` exporter.
Conventional Commit Generator
Interactive builder for Conventional Commits standard (feat, fix, docs, refactor, breaking changes).
.gitignore Generator
Combine .gitignore templates for Node, Python, Java, Go, macOS, Windows, and VSCode.
Git Command Builder & Cheatsheet
Quick commands for undoing commits, cherry-picking, stash management, branch naming, and rebasing.
Color Palette & HEX / RGB / HSL Converter
Color picker, format conversions, WCAG contrast checker, and harmonious palette generator.
CSS Box Shadow Generator
Interactive visual box-shadow builder with multiple layers, blur, spread, inset, and CSS export.
CSS Glassmorphism Generator
Generate modern frosted glass effects with backdrop-blur, translucency, and borders.
Tailwind CSS Utility Builder
Visual builder for padding, margin, border, typography, flex, and grid into Tailwind classes.
CSS Button & Loader Generator
Design customizable modern CSS buttons and animated loading spinners with instant code export.
Client-Side Image Compressor & Resizer
Compress, resize, and convert images (WebP, PNG, JPEG) completely in your browser via Canvas API.
Image ↔ Base64 Data URI
Convert images to Base64 data strings for inline HTML/CSS, or preview and download Base64 as images.
SVG Viewer, Cleaner & Data URI
Inspect SVG code with live preview, optimize tags, and copy as ready-to-use Data URI or JSX.
Client-Side File Hash Calculator
Compute SHA-256, SHA-1, and MD5 file checksums directly in browser memory without uploading.
Word, Character & Reading Time Counter
Calculate words, characters, sentences, lines, estimated reading time, and speaking time.
Text Cleaner, Sorter & Deduplicator
Remove duplicate lines, sort alphabetically/numerically, trim whitespace, and reverse lines.
Find & Replace with Regex Support
Find and replace text patterns across large documents using plain text or regular expressions.
Unix Timestamp Converter & Generator
Convert seconds and milliseconds epoch timestamps to local time, UTC, ISO 8601, and relative time.
Date Difference & Age Calculator
Calculate exact time elapsed between two dates in days, weeks, months, or calculate age and durations.
Interactive Regex Tester & Highlight
Test regular expressions in real-time with syntax highlighting, flag selectors, and captured groups breakdown.
Common Regex Library & Cheatsheet
Curated regex patterns for Email, Phone, URL, IPv4, IPv6, UUID, Password, Indian GST/PAN/PIN.
IPv4 / CIDR Subnet Calculator
Calculate network address, broadcast address, netmask, wildcard, usable host range, and host count.
Network Port Numbers Directory
Search standard and well-known TCP/UDP port numbers (HTTP 80, SSH 22, Postgres 5432, Redis 6379).
WhatsApp Cloud API Message Builder
Build official WhatsApp Cloud API JSON payloads for Text, Interactive Buttons, Lists, and Templates.
WhatsApp Webhook Signature & Payload Tester
Generate sample incoming WhatsApp webhook events and test SHA256 HMAC signature verification.
Mock Data & Custom Schema Generator
Generate realistic mock data batches (Names, Emails, Companies, UUIDs, Dates, Addresses) in JSON or CSV.
Interactive README.md Builder
Craft clean, professional GitHub README.md files with badges, install steps, architecture, and live preview.
Custom Tool Builder & Generator Engine
Create your own customized generator tools with custom input fields and mustache template outputs.
Your Private In-Browser Workspace
Save favorites, store presets, and build customized generator tools directly in your browser's localStorage sandbox.
No accounts, no cookies, no tracking. Tokens, JWTs, and database credentials never leave your browser sandbox.
Native Web APIs (SubtleCrypto, Canvas, FileReader) process cryptographic digests and conversions at hardware speed.
Create your own reusable templates and input forms that persist offline across sessions.