Blog
Tool guides, tips, and developer references.
-
DNS Lookup in the Browser: A, MX, TXT, and CAA via DNS-over-HTTPS
Look up DNS records from any browser without dig, nslookup, or whatsmydns. How DoH unlocks A, AAAA, CNAME, MX, TXT, NS, SOA, CAA, PTR, and SRV in a fetch() call — with DNSSEC, TXT-segment, and propagation gotchas.
-
Zero-Width Character Detector: Find Hidden Unicode in AI Output and Code
Detect and strip invisible Unicode characters — zero-width spaces, BOM, bidirectional controls, ChatGPT watermark tag characters — from any text. Trojan-Source aware. 100% client-side.
-
Format GraphQL in the Browser: A Practical Guide
Beautify, minify, and validate GraphQL queries, mutations, and SDL schemas without an editor extension. Browser-only, runs the official graphql-js parser locally.
-
Read HTTP Headers Like a Pro: A Practical Guide
Paste raw HTTP headers and inspect security, caching, CORS, and cookie metadata in one pass. Learn the categories, the compliance traps, and how to use the headers your code is already sending.
-
jq in the Browser: Test Filters Without Installing jq
Run the official jq 1.7 engine inside any modern browser. Pipes, select, map, group_by, reduce — same output as the CLI, no install, no upload.
-
Why event.keyCode Lies to You: A Modern Guide to JavaScript Keyboard Events
Stop guessing event.key vs event.code vs keyCode. See exactly what the browser fires, when modifier keys flip, why IME composition breaks single-key handlers, and how to write keyboard shortcuts that survive non-QWERTY layouts.
-
Pick Any Pixel on Your Screen with the EyeDropper API
A developer's guide to the browser-native EyeDropper API — how it works, where it falls short, and how to use it to sample colors from screenshots, videos, and other apps.
-
Inspect HAR Files in the Browser: A Practical Guide
Analyze an existing HAR export in your browser to read the waterfall, decode request headers, and export filtered subsets — no backend required.
-
HTML Minifier: Shaving Bytes Without Breaking Inline Scripts
What HTML minifiers actually do, where regex-based tools quietly corrupt your page, and how to safely strip whitespace, comments, and boolean attributes in the browser.
-
MIME Type Lookup: A Reference and Magic-Bytes Sniffer for Uploads
Stop trusting file extensions for upload validation. How the IANA media-type registry works, how magic-bytes detection runs in the browser, and which Content-Type to put in your HTTP headers.
-
IBAN Validator: Catching the Wrong Bank Account Before It Costs You
Inside the mod-97 algorithm, the country-by-country BBAN structure, and the OCR-era pitfalls that bounce SEPA payments. With a free browser-side IBAN checker.
-
File Hash Checker: Verifying Downloads with SHA-256 in the Browser
Compute SHA-256, SHA-1, SHA-384, SHA-512, and MD5 of a local file with Web Crypto — verify a download against the publisher's hash without uploading a byte.
-
Image Compressor in the Browser: A Practical Guide for Developers
Compress JPEG, PNG, and WebP images entirely in your browser. Pick the right format, tune quality, resize on the long edge, and ship without leaking your screenshots to a third party.
-
How to Generate and Decode a Basic Auth Header
Learn the HTTP Basic Authentication header format, how Base64 encoding works, how to use Basic auth with cURL and Fetch, and how to decode a copied header safely.
-
PKCE Generator: Wire Up OAuth Authorization Code Flow Without Mistakes
Generate code_verifier and code_challenge pairs, plug them into /authorize and /token, and avoid the four PKCE mistakes that silently break login on mobile and SPAs.
-
SSL Certificate Decoder: A Practical Guide to X.509 PEM Inspection
Decode any X.509 PEM certificate to read Subject, Issuer, SANs, validity, key type, signature algorithm, and fingerprints — without uploading the file or running OpenSSL.
-
SVG Optimizer: Slim Down Your Icons Without Breaking Them
How SVGO compresses SVG markup, which plugins are safe to enable, the two toggles that quietly break responsive icons, and how to ship a build-time pipeline that matches what you tuned in the browser.
-
CSP Header Generator: Build Strict Content Security Policy Without the Pain
Build production-grade Content-Security-Policy headers with directives, hashes, and nonces — plus strict-mode templates and Express/Nginx snippets.
-
AI Token Counter: Browser-Side Tokenizer for GPT-5, Claude, Gemini
Count BPE tokens and estimate costs for GPT-5, GPT-4.1, Claude Sonnet 4.6, Gemini 3, and DeepSeek V3 entirely in your browser. No API key needed.
-
Color Blindness Simulator: Test Your UI for Color Vision Deficiency
Learn how color blindness affects your users, which CVD types to prioritize, and how to simulate them on colors and images — all in the browser.
-
Image Color Palette Extractor: Pull a Designer-Ready Palette from Any Picture
Learn how a browser-side image color palette extractor uses k-means clustering, OKLCH math, and CSS variable export to turn any picture into a usable design palette.
-
Timezone Converter: IANA, DST, and the UTC Offsets That Burn Engineers
How IANA timezones, DST transitions, and UTC offsets actually work — plus copy-paste conversion code for JavaScript, Python, Go, Java, and SQL.
-
Gitignore Generator: Pick Your Stack, Skip the Copy-Paste
Build a .gitignore from 200+ official github/gitignore templates. Covers stack combos, gitignore syntax, the 'I already committed it' trap, and how dedup-with-provenance keeps the file readable.
-
JSONL Converter: JSON Lines, NDJSON, and JSON Arrays
Learn how JSONL works, how to convert JSON Lines and NDJSON to JSON arrays, how to turn arrays back into compact line-delimited records, and how to validate line-level errors.
-
Markdown TOC Generator: One File, Four Anchor Dialects
Generate a clickable Markdown table of contents that actually works on GitHub, GitLab, Jekyll, and Bitbucket. Covers anchor slug algorithms, dedup rules, marker-based in-place updates, and the cross-platform traps that silently break your links.
-
Meta Tag Generator: One Page, Four Audiences
Build a complete <head> meta block — Open Graph, Twitter Card, Schema.org JSON-LD, and SEO basics. Covers og:image specs, canonical URL pitfalls, and platform-specific quirks.
-
Cubic Bezier Generator: Stop Guessing CSS Easing Curves
Drag two control points, see the animation run, and copy CSS / SCSS / Tailwind. Plus: the math behind cubic-bezier, design system presets, and failure modes that ship to production.
-
Favicon Generator: Build the Modern Multi-File Set in Your Browser
Generate the full modern favicon set — ICO, multi-size PNGs, apple-touch-icon, manifest — without uploading. Covers the ICO format, PWA maskable icons, and what each browser actually requests.
-
Color Contrast Checker: Pass WCAG AA Without Killing Your Brand Color
Pick foreground and background, get the WCAG 2.x ratio, AA/AAA pass-fail across body/large/UI, and a hue-preserving fix when contrast is too low.
-
EXIF Metadata Viewer: Strip GPS and Camera Info from Photos in Your Browser
View EXIF metadata and strip EXIF, XMP, and IPTC marker segments from JPEG photos client-side. Covers the JPEG marker layout, GPS coordinate decoding, and what social platforms actually strip.
-
WiFi QR Code Generator: Let Guests Join Your Network in One Scan
Generate Wi-Fi QR codes that phones scan to join automatically. Covers the WIFI: format, escaping rules, encryption types, and device compatibility.
-
JSON to Python Dataclass Generator: Convert API Responses to Typed Python Code
Generate Python dataclasses, Pydantic v2 models, or TypedDict definitions from any JSON. Handles nested objects, arrays, optional fields, and custom class names. Free, runs in your browser.
-
JWT Generator Online: Create and Sign JWT Tokens in Your Browser
Generate and sign JWT tokens with HS256, HS384, or HS512 directly in your browser. Edit header and payload claims, set your secret, and copy the signed token. No data sent to servers.
-
TypeScript to Zod Schema Generator: Convert Interfaces to Runtime Validation
Convert TypeScript interfaces and type aliases to Zod schemas instantly. Understand how the conversion works, handle edge cases, and add runtime validation to your API code.
-
JSON to Java POJO Generator: Auto-Generate Java Classes from JSON
Paste JSON and instantly get Java POJOs with Jackson or Gson annotations. Stop writing boilerplate — generate nested classes, handle nulls, and add Lombok support in seconds.
-
QR Code Decoder Online: Read QR Codes from Images Instantly
Decode QR codes from any image file in your browser. Extract URLs, Wi-Fi credentials, vCards, and text without uploading to a server. Free, private, instant.
-
CSS Box Shadow Generator: A Practical Guide to box-shadow
Master CSS box-shadow with a free online generator. Learn syntax, layering, inset shadows, and real-world examples — no guesswork required.
-
Color Shades Generator: Build Consistent UI Palettes Fast
Learn how to generate color shades and tints for UI design. Covers HSL math, Tailwind-style palettes, contrast ratios, and a free online color shades generator.
-
Markdown Linter Online: Catch Formatting Errors Before They Ship
Lint Markdown files online with instant rule-by-rule feedback. Catch MD001, MD013, MD041 and 40+ other markdownlint rules directly in your browser.
-
Protobuf to JSON Converter Online: Decode .proto Schemas and Binary Messages
Convert Protobuf schemas to sample JSON and decode binary Protobuf messages to JSON online. Privacy-first, runs entirely in your browser using protobufjs.
-
ULID Generator: What Is a ULID and Why It Beats UUID for Sorting
ULID vs UUID — understand the difference, when to use a ULID, how to generate one, and how ULIDs solve ordering problems in distributed systems.
-
10 Developer Productivity Hacks You Can Do Right in Your Browser
Boost your dev workflow with these 10 browser-based productivity tricks — no installs needed. Format JSON, decode JWTs, generate UUIDs, and more in seconds.
-
The Evolution of Developer Tools: From CLI to Browser
How developer tools shifted from local CLI utilities to cloud-hosted services to client-side browser apps — and why the browser-based model is winning.
-
From Messy JSON to Clean APIs: A Real-World Debugging Story
A walkthrough of a realistic API debugging session — using browser tools to decode tokens, diff responses, format payloads, and finally fix the bug.
-
NATO Phonetic Alphabet Converter Online: Instantly Spell Out Any Text
Convert text to NATO phonetic alphabet codes online. Spell out letters unambiguously using Alpha, Bravo, Charlie — free, instant, no signup required.
-
Security Best Practices Every Web Developer Should Know
A practical guide to web security fundamentals — hashing, HMAC, JWT, TOTP, and password storage — with hands-on browser tools for every concept.
-
Why Every Developer Needs a Toolbox: Building Efficient Workflows
The best developers aren't the smartest — they're the most deliberate about their tools. Here's why a curated developer toolbox is a force multiplier for your workflow.
-
CSV to SQL Converter: Generate INSERT Statements and CREATE TABLE from CSV
Learn how to convert CSV files to SQL INSERT and CREATE TABLE statements. Covers header handling, type detection, MySQL, PostgreSQL, and SQLite dialects.
-
HTML to JSX Converter: A Complete Guide to React Migration
Learn how to convert HTML to JSX for React. Covers className, htmlFor, inline style objects, camelCase events, self-closing tags, and a free online converter.
-
htpasswd Generator Online: Create Apache & Nginx Basic Auth Hashes
Generate htpasswd entries online for Apache and Nginx basic auth. Compare bcrypt, APR1 MD5, SHA1, and plaintext, with browser-side hashing and setup examples.
-
IP Subnet Calculator Online: CIDR, Subnetting, and Host Ranges Explained
Calculate IPv4 subnets instantly online. Enter any CIDR notation and get network address, broadcast, host range, and usable hosts. Free subnet calculator with no signup.
-
SVG to JSX Converter: Use SVG Icons Directly in React
Learn how to convert SVG to JSX for React. Covers attribute renaming, TypeScript types, forwardRef, prop spreading, and a free browser-based SVG to JSX converter.
-
Text to ASCII Art Generator Online: Turn Any Text into ASCII Art Instantly
Generate ASCII art from any text online using 200+ FIGlet fonts. Free, instant, no signup — convert text to ASCII art for banners, terminals, and READMEs.
-
CSV to Markdown Table: Convert Spreadsheet Data for Docs and READMEs
Convert CSV to Markdown table instantly in your browser. Learn how to format CSV data as Markdown tables for READMEs, GitHub issues, and documentation.
-
Text to Binary Converter Online: Convert UTF-8 Text to Binary
Convert text to binary online, decode binary back to UTF-8 text, and learn how ASCII, Unicode, bytes, and 8-bit binary groups work with examples.
-
CSS Specificity Calculator: Check and Debug Selector Weights Online
Use our CSS specificity calculator online to check selector weights instantly. Understand the 0-0-0 notation, avoid common gotchas, and fix cascade conflicts.
-
OpenAPI Validator: Validate Your OpenAPI 3 Spec Online, Instantly
Validate OpenAPI spec online with our free client-side OpenAPI 3 validator. Catch missing required fields, invalid $ref, and type errors without uploading your spec.
-
AES Encryption Tool Online: Encrypt and Decrypt Text in the Browser
Encrypt and decrypt text with AES-GCM directly in your browser. Learn how AES works, key sizes, modes, and why client-side encryption matters for privacy.
-
CSS Flexbox Generator: Build Flex Layouts Visually and Export CSS
Use a CSS flexbox generator to configure flex containers visually. Learn justify-content, align-items, flex-wrap, gap, and flex-grow with copy-ready CSS output.
-
CSS Grid Generator Online: Build Grid Layouts Without Writing CSS
Use a CSS grid generator online to visually design grid layouts and export clean CSS. Learn grid-template-columns, rows, gaps, and responsive patterns.
-
JSON to JSON Schema Generator: Infer Schemas from Real Data
Generate JSON Schema draft-07 from any JSON object instantly. Learn how type inference, required fields, and nested structures work — with code examples.
-
JSON to Kotlin Data Class Generator: Instant Type-Safe Models
Convert JSON to Kotlin data classes instantly. Learn how the generator handles nullability, nested objects, and lists — plus best practices for Android and backend Kotlin.
-
JSON to Go Struct Generator: Instant Typed Structs from JSON
Convert JSON to Go structs instantly with correct field types and JSON tags. Learn how the generator handles nested objects, slices, and null values for production Go code.
-
JSONPath Tester Online: Query JSON Data Without Writing Code
Learn JSONPath syntax and test JSON path expressions online. Covers $ root, dot notation, filters, wildcards, and recursive descent with real examples.
-
Morse Code Translator Online: Encode and Decode Text Instantly
Translate text to Morse code and back with our online Morse code translator. Learn the alphabet, bidirectional conversion, prosigns, and practical applications.
-
Unicode Text Converter Online: Fancy Fonts, Bold & Italic Text
Convert plain text to Unicode fancy fonts, bold, italic, script, monospace, small caps, circled, and squared styles. Learn how Unicode styled text works.
-
CSS Variables Generator Online: Master Custom Properties for Theming
Use a CSS variables generator online to build design token systems, dark mode themes, and component styles. Learn syntax, scope, JS access, and Sass comparison.
-
Env File Parser Online: Parse and Inspect .env Files Instantly
Parse .env files online without uploading data. Visualize key-value pairs, catch syntax errors, and export to JSON — all in your browser.
-
Htaccess Generator Online: Apache Rules Without the Manual
Use an htaccess generator online to create 301 redirects, HTTPS rewrites, CORS headers, and caching rules for Apache without memorizing mod_rewrite syntax.
-
JSON Diff Online: Compare JSON Files & Generate JSON Patch
Compare JSON files online, spot added, removed, and modified fields, normalize formatting, and learn when to use structural diff, text diff, or JSON Patch.
-
JSON Schema Validator Online: Validate JSON Data Against Schemas Instantly
Validate JSON against JSON Schema online. Learn schema keywords, draft versions, validation in Python/Node.js/Go, and catch data contract bugs before they hit production.
-
Markdown Preview Online: Write and Render Markdown Instantly
Preview Markdown in real time with syntax highlighting, GitHub-flavored tables, task lists, and code blocks. No install needed — paste and render instantly.
-
Regex Tester Online: Test Regular Expressions with Live Matching
Test regular expressions online with real-time match highlighting, capture groups, and flag support. Debug patterns against sample text instantly — no IDE required.
-
Robots.txt Generator Online: Complete Guide to Web Crawler Control
Use a robots.txt generator online to control search engine crawlers. Learn directives, common rules, and avoid costly mistakes that hurt SEO.
-
RSA Key Pair Generator Online: Generate 2048 & 4096-bit Keys in Your Browser
Generate RSA key pairs (PEM, JWK) instantly in your browser — no server, no upload. Learn key sizes, formats, and real-world use cases for SSH, TLS, and JWT.
-
SVG to PNG Converter Online: When and How to Convert Vector to Raster
Use an SVG to PNG converter online to export pixel-perfect images for social media, email, and app stores. Learn resolution, transparency, and DPI settings.
-
TOTP Generator Online: Generate 2FA Codes & Learn RFC 6238
Generate TOTP and 2FA codes online for testing, learn how RFC 6238 works, and implement time-based one-time passwords securely in your app.
-
WebP Converter Online: Shrink Images Without Losing Quality
Use a WebP converter online to reduce PNG and JPEG file sizes by 25-35%. Learn browser support, fallback patterns, Next.js optimization, and cwebp CLI usage.
-
YAML Validator Online: Check YAML Syntax and Structure Instantly
Validate YAML syntax online with line-by-line error reporting. Catch indentation errors, duplicate keys, and type issues before they hit production.
-
Color Converter Guide: HEX, RGB, HSL, and HSB Conversion Online
Convert colors between HEX, RGB, HSL, and HSB formats instantly. Learn when to use each format and how to pick colors for web, print, and design work.
-
Cron Expression Guide: Syntax, Examples, and Online Parser
Master cron expression syntax with a complete cheat sheet and real-world examples. Validate and describe cron schedules instantly with an online parser.
-
CSS Unit Converter: px to rem, em, vw — The Complete Guide
Convert between px, rem, em, vw, and vh instantly. Learn when to use each CSS unit and how our free online CSS unit converter saves time.
-
cURL to Code Converter: Turn Any curl Command into Python, JS, Go, and More
Paste a curl command and instantly get working code in Python requests, JavaScript fetch, Go, PHP, and more. No more manual translation—understand how the conversion works.
-
Docker Run to Docker Compose Converter: Stop Repeating Long Docker Commands
Paste a docker run command and instantly get a docker-compose.yml. Understand which flags map to which Compose fields, and when to use Compose over raw docker run.
-
Fake Data Generator Online: Generate Test Data Without Installing Anything
Generate realistic fake data for testing — names, emails, addresses, UUIDs, and more. No Faker.js install needed. Runs entirely in your browser.
-
HMAC Generator Online: SHA-256 Message Authentication Explained
Learn how HMAC works, when to use HMAC-SHA256 vs plain hashing, and how to generate and verify HMAC signatures in the browser and in code.
-
HTTP Status Codes: The Complete Developer Reference
A complete reference for all HTTP status codes — 1xx to 5xx. Understand what each code means, when servers return it, and how to handle it in your code.
-
JSON to TypeScript Interface Generator: Stop Writing Types by Hand
Automatically generate TypeScript interfaces from JSON. Learn how JSON-to-TypeScript tools work, edge cases to watch for, and best practices for type-safe APIs.
-
JSON to Zod Schema Generator: Auto-Generate TypeScript Validation from JSON
Paste any JSON object and instantly generate a Zod schema for TypeScript runtime validation. Learn how Zod schemas work and when to use them in your API and form handling code.
-
Markdown Table Generator Online: Visual Editor with CSV & JSON Import
Create Markdown tables instantly with a visual editor, CSV paste, or JSON paste. Learn GFM table syntax, column alignment, and pipe character escaping.
-
QR Code Generator Guide: Create QR Codes for URLs, Wi-Fi, and Text
Generate QR codes for websites, Wi-Fi credentials, contact cards, and plain text. Learn QR code formats, error correction levels, and download options.
-
URL Slug Generator: How to Slugify Strings for SEO-Friendly URLs
Learn what URL slugs are, why they matter for SEO, and how to slugify any string online — including Unicode, spaces, and special characters.
-
Text Case Converter Guide: camelCase, snake_case, PascalCase, and More
Convert text between camelCase, snake_case, PascalCase, kebab-case, SCREAMING_SNAKE_CASE, and Title Case online. Learn when each naming convention is used.
-
URL Parser Online: Decode and Inspect Any URL Instantly
Parse any URL into its components — protocol, host, path, query params, and fragment. Free online URL parser for API debugging, redirect tracing, and web development.
-
Word Counter Online: Count Words, Characters & Reading Time
Use a free online word counter to count words, characters, sentences, paragraphs, and reading time. Learn word count rules and writing targets.
-
ASCII Converter: Text to ASCII Code and Character Table
Convert text to ASCII codes and back instantly. Learn what ASCII is, how it works, and the difference between ASCII, Unicode, and UTF-8 encoding.
-
Aspect Ratio Calculator: 16:9, 4:3, and Custom Ratios Explained
Calculate and convert screen aspect ratios for video, design, and web. Understand 16:9, 4:3, 21:9, and how to maintain aspect ratio when resizing.
-
chmod 755 vs 644 vs 777: Linux File Permissions Calculator Guide
Compare chmod 755, 644, and 777, convert Linux permissions, and learn when to use each value safely with examples and a free chmod calculator.
-
CSS to Tailwind: How to Convert Any CSS to Utility Classes
Learn how to convert CSS to Tailwind CSS utility classes. Covers spacing, typography, flexbox, grid, and custom values. Includes migration tips for existing projects.
-
CSV to JSON Converter: From Spreadsheet to API-Ready Data
Learn how to convert CSV to JSON online, handle headers, nested structures, and common formatting issues when transforming spreadsheet data for APIs.
-
How to Compare Text Online: A Developer's Text Diff Guide
Compare two texts, files, or code snippets instantly with an online diff checker. Learn how diff algorithms work, how to read diff output, and when to use each tool.
-
SHA256 Hash Generator Online: The Complete Guide
Learn how SHA256, MD5, and other hash functions work. Generate and verify hashes instantly with our free online hash generator tool.
-
HTML Entity Reference: Encode & Decode Special Characters
Complete HTML entity reference for special characters. Learn when to use HTML entities, the difference between named and numeric encoding, and how to encode/decode in code.
-
Image to Base64: Complete Guide for Developers
Learn how to convert images to Base64 encoding for CSS data URIs, HTML inline images, JSON APIs, and email attachments. Includes code examples in Python, JS, and more.
-
JWT Decoder Online: Decode and Understand JSON Web Tokens
Learn how JSON Web Tokens work, how to decode JWT claims, verify signatures, and avoid common security mistakes. Free online JWT decoder tool included.
-
Text Line Tools: Sort, Deduplicate, and Transform Lines Online
Sort lines alphabetically, remove duplicate lines, reverse order, and clean text online. Practical guide for log analysis, data cleaning, and developer text workflows.
-
Markdown Cheat Sheet: GitHub-Flavored Markdown Complete Reference
A complete GitHub-Flavored Markdown cheat sheet covering syntax, tables, task lists, code blocks, and GFM extensions — with a live online preview tool.
-
Lorem Ipsum Generator Online: Placeholder Text for UI Mockups
Generate lorem ipsum placeholder text online for UI mockups, landing pages, cards, blogs, and email templates. Learn when to use dummy text and alternatives.
-
Strong Password Generator: What Makes a Secure Password
Learn what makes a password strong, how random password generators work, and how to manage dozens of unique passwords without going insane. Free secure password generator included.
-
Number Base Converter: Binary, Octal, Decimal, Hex Explained
Convert binary, octal, decimal, and hexadecimal numbers instantly. Learn how number base conversion works and when each base is used in programming.
-
SQL Formatter: Format and Beautify SQL Queries Online
Format messy SQL queries into readable, consistent code instantly. Supports SELECT, INSERT, CREATE TABLE, and complex JOINs. Free online SQL beautifier.
-
Unix Timestamp Converter: Epoch to Date and Back
Learn what Unix timestamps are, how to convert epoch time to human-readable dates in any timezone, and how to work with timestamps in JavaScript, Python, and more.
-
TOML to JSON: A Complete Developer Guide
Learn how to convert TOML to JSON online and in code. Covers TOML syntax, comparison with JSON and YAML, and real-world Rust/Python/Go config use cases.
-
URL Encode / Decode Online: Percent Encoding Explained
Learn how URL encoding (percent encoding) works, when to use encodeURIComponent vs encodeURI, and how to encode and decode URLs instantly online.
-
UUID Generator: What Is a UUID and How to Use It
Understand UUID formats, version differences, how to generate UUIDs in code, and best practices for database keys, APIs, and distributed systems — plus a free online UUID generator.
-
XML Formatter: Pretty Print and Validate XML Online
Format and validate XML documents instantly in your browser. Learn XML structure, namespaces, and how to debug malformed XML with our free online formatter.
-
YAML to JSON: The Developer's Complete Guide
Learn how to convert YAML to JSON online, understand YAML syntax, and handle K8s configs, Docker Compose files, and GitHub Actions workflows.
-
Regex Cheat Sheet with Live Tester
A practical regex reference covering character classes, quantifiers, anchors, groups, and lookaheads — with examples and a free online regex tester.
-
Base64 Encoding Explained: What It Is and How to Use It
Understand what Base64 encoding is, why it exists, how to encode and decode in JavaScript, Python, and the command line — plus a free online Base64 tool.
-
JSON Formatter Online: The Complete Guide
Learn how to format, validate, and debug JSON instantly. Covers syntax rules, common errors, and best practices — plus a free online JSON formatter tool.