Developer ToolsetDeveloper Tools
Encoders, formatters, converters, and code generators for developers
.env File Generator
Generate .env files with templates for Next.js, Express, Django, Laravel, AWS, Stripe, Firebase, and other platforms
.gitignore Generator
Generate customized .gitignore files by combining templates for languages, frameworks, IDEs, and operating systems
API Changelog Classifier
Label API changelog entries as breaking, deprecation, feature or fix, and see what consumers must change. AI model runs in your browser. Private.
API Error Log Triager
Paste API error logs and an AI model in your browser groups the errors, suggests a severity and shows where to look first. Free, private, no signup.
ASCII Art Generator
Convert text and images to ASCII art. Text-to-ASCII with 200+ FIGlet fonts, image-to-ASCII with color output, edge detection, and dithering. Plus shapes and a pre-made art library.
ASCII Table (Dec, Hex, Oct, Binary)
Searchable ASCII table with decimal, hexadecimal, octal and binary codes, control character names, C escapes and HTML entities, plus the Latin-1 and Windows-1252 upper half.
AWS S3 Command Generator
Generate aws s3 sync, cp, and mv commands with the right flags. Build complex S3 CLI commands without memorizing syntax
Barcode Generator (Code 128, EAN-13, UPC-A)
Create Code 128, EAN-13 and UPC-A barcodes in your browser, with automatic GS1 check digits, adjustable bar size and SVG or PNG download.
Code Comment Quality Checker
Paste code comments and an AI model in your browser rates them, quotes vague ones and suggests clearer wording. Free, private, no signup.
Config Drift Detector
Compare two config files with a quick shared-word check in your browser. No AI model runs; use a line-by-line diff for real drift.
Cron Expression Builder
Build and validate cron expressions with visual interface
CSV JSON Excel Converter
Convert between CSV, JSON, and Excel formats instantly — six conversion modes with browser-based processing
curl Command Builder
Build curl commands with headers, auth, JSON bodies, and shell-aware quoting for bash, PowerShell, and cmd.exe — plus curl install commands for Windows, macOS, and Linux.
Data Format Converter
Convert between JSON, YAML, XML, TOML, and CSV with real-time validation
Dependency Risk Note Analyzer
Paste audit output or Dependabot alerts and an AI model in your browser ranks package risk and what to fix first. Nothing is uploaded.
Docker Command Builder
Visual Docker command generator for run, build, and compose with security best practices and preset templates
Dockerfile Generator
Generate optimized Dockerfiles with multi-stage builds, security best practices, and templates for Python, Node.js, Go, and Java
Document Type Classifier
Paste a snippet to classify its document family and decide which parser, lint step, or review workflow should handle it.
Excel to JSON Converter
Convert Excel spreadsheets to JSON with multi-sheet support and custom formatting options
Git Branch Visualizer
Compare Git branching strategies visually. Understand GitFlow, GitHub Flow, and trunk-based development with diagrams and commands.
Grok Pattern Builder & Debugger
Build, test, and debug Grok patterns online with live matching, fix suggestions, and export to regex, Logstash config, and Elasticsearch ingest pipelines.
GUID & UUID Generator
Generate GUIDs and UUIDs (v1, v4, v7) instantly. Bulk generation, format options, and copy to clipboard. Free online tool.
Histogram Maker
Paste numbers from a spreadsheet and turn them into a clear histogram. Control the bin count, width, and starting value, add a fitted normal curve, then export PNG or SVG or print in black and white.
HTML Entity Encoder & Decoder
Encode and decode HTML entities online with XSS prevention analysis. Supports named and numeric entities.
HTML Formatter & Beautifier
Beautify messy or minified HTML with consistent indentation, or minify it for production, while keeping pre, textarea, script and style contents untouched.
HTML Viewer & Live Editor
Paste or write HTML, CSS and JavaScript and see it rendered live in a sandboxed preview, with phone and tablet widths and a switch to turn scripts off.
HTTP Request Builder
Interactive developer tool for constructing, sending, and analyzing HTTP requests directly from the browser
HTTP Status Code Lookup
Look up common HTTP status codes, meanings, debugging actions, cache behavior, examples, caveats, and API troubleshooting notes.
Incident Timeline Extractor
Turn messy incident notes into a postmortem timeline with an AI model that runs in your browser. Nothing is uploaded. Free, no signup.
JSON Diff (Semantic Compare)
Compare two JSON documents by structure rather than text: key order is ignored, every difference is listed with its JSONPath, and a JSON Patch is generated.
JSON Formatter
Format, validate, and minify JSON with syntax highlighting
JSON Lines (JSONL) Viewer & Converter
Open or paste a JSONL or NDJSON file, see every record in a table or one at a time, find the lines that fail to parse, and convert to a JSON array or CSV.
JSON Validator & Formatter
Validate and format JSON with detailed error messages, tree visualization, and syntax highlighting. Fix JSON errors instantly.
Luhn Algorithm Checker
Check whether a card number, IMEI or account number passes the Luhn (mod 10) checksum, or compute the missing check digit, with a digit-by-digit walkthrough.
Markdown Preview & Editor
Live markdown editor with instant preview. Supports GitHub Flavored Markdown, tables, code blocks, and task lists.
Mock Data Generator
Generate realistic fake test data (names, emails, addresses, credit cards, UUIDs) with JSON, CSV, and SQL export
Network Latency Calculator
Calculate network latency based on distance and speed.
Nginx Log Analyzer & Pattern Reference
Nginx access & error log format reference, a library of ~15 ready-to-use regex patterns (5xx, 4xx, slow upstreams, bots, timeouts, SSL errors), and a paste-and-test matcher. Generates Alert24 server-agent log-search configs.
Online Diff Checker & Code Compare
Compare text, code, and config files side by side with syntax highlighting. See additions, deletions, and changes instantly.
Online Regex Tester & Debugger
Test regular expressions online with live matching, pattern explanations, and a built-in regex library. Supports JavaScript, Python, and Go.
package.json Generator
Generate package.json files with presets for React, Next.js, Express, testing, Tailwind, and other common configurations
Pull Request Summary Builder
Paste a diff or commit list and an AI model in your browser drafts the PR title, summary, risks and gaps. Free, private, no signup.
Random String Generator
Generate cryptographically secure random strings in bulk with your choice of characters, length and count, and see the entropy in bits for each string.
Release Note Draft Summarizer
Turn rough release notes into customer-facing features, fixes and breaking changes with an AI model in your browser. Free, private, no signup.
requirements.txt Generator
Generate Python requirements.txt files with popular package presets for Django, FastAPI, Data Science, ML, and more
Scatter Plot Maker
Paste point pairs from a spreadsheet, compare multiple series, calculate a least-squares best-fit equation and R-squared, then export SVG, PNG, or print.
Semver Calculator
Parse, validate, compare, and increment semantic versions with npm-style range checking
SQL Dialect Translator
Translate SQL between dialects - auto-detects source dialect and converts syntax for MySQL, PostgreSQL, SQL Server, Oracle, SQLite, BigQuery, Redshift, and Snowflake
SQL Formatter
Format and beautify SQL queries with multi-dialect support
SRI Hash Generator
Generate Subresource Integrity hashes for scripts and stylesheets
Stack Trace Root Cause Classifier
Paste a stack trace and an AI model in your browser names the likely root cause, your first code frame and what to check. Nothing is uploaded.
strftime / Date Format String Builder
Build a strftime date format string with a live preview, look up every % directive, and get the equivalent layout for Go, PHP date() and date-fns.
Support Ticket Router for Dev Tools
Route a developer support ticket to auth, SDK, outage, billing or how-to with a small text model that runs in your browser. Free and private.
Timezone Meeting Planner & World Clock
Free meeting planner for distributed teams. Find overlap windows across 38 time zones, schedule calls, convert times, and export to calendar.
User Agent Parser & Analyzer
Parse user agent strings to detect browser, OS, device type, and bots. Analyze Chrome, Firefox, Safari, and Googlebot user agents.
Webhook Payload Generator
Generate webhook payloads with HMAC signatures for Stripe, GitHub, Slack, Shopify, Twilio, SendGrid, Discord and more
Windows FILETIME Converter
Convert Windows FILETIME, LDAP, and Active Directory timestamps to human-readable dates. Batch convert lastLogon, pwdLastSet, and accountExpires values.
YAML to JSON Converter
Convert YAML to JSON or JSON to YAML with full support for comments and anchors
YAML Validator & Linter (Line Numbers + Type Gotchas)
Paste a broken or suspect YAML file and get every syntax error as line:column with a plain-English fix, lint warnings for duplicate keys and bad indentation, and a list of values that will not load as the type you meant.