Blog
Practical tutorials and in-depth guides for developers — how the tools work under the hood, real-world use cases, and common pitfalls. Everything runs locally in your browser.
- Text·8 min read
Text Case Converter Guide: Convert Text Between Cases
Learn how a text case converter turns text into camelCase, snake_case, kebab-case and Title Case, with tested examples, JS and Python code, and common pitfalls.
- Encoders / Decoders·8 min read
Gzip vs Bzip2: Which Compression Should You Use?
Gzip vs Bzip2: compare DEFLATE and BWT+Huffman compression on ratio, speed, and HTTP use, with real tested outputs from our tools and JS and Python examples.
- Text·8 min read
Slugify Guide: Convert Titles into URL-Friendly Slugs
Turn titles into clean, URL-safe slugs with a slugify tool: NFKD accent stripping, lowercase and hyphen rules, tested examples, and common pitfalls to avoid.
- Formatters·8 min read
Tabs vs Spaces: Which Indentation Should You Use?
Tabs vs spaces: compare indentation on width control, accessibility, file size, and how EditorConfig and linters settle it — with tested JS and Python.
- Generators·9 min read
OTP Generator Guide: Create TOTP Codes in Your Browser
Learn how an OTP generator builds TOTP codes with HMAC-SHA1, the 30-second window, secret encoding traps, and common mistakes — with JS and Python examples.
- Network·9 min read
IPv4 vs IPv6: Address Formats, Limits & Migration
Compare IPv4 vs IPv6: address size, notation, subnetting and CIDR math, with real tested tool outputs, JS and Python examples, and migration pitfalls to avoid.
- Formatters·8 min read
JavaScript Formatter Guide: Beautify & Indent JS Code
Learn how a JavaScript formatter beautifies code with 2-space indentation and whitespace cleanup, common pitfalls, plus when to use it instead of writing code.
- Encoders / Decoders·7 min read
Base58 vs Base64: Which Encoding Should You Use?
Base58 vs Base64: learn how each encoding works, why Bitcoin and IPFS prefer Base58, how alphabet size and padding differ, with tested JS and Python examples.
- Formatters·7 min read
HTML Formatter Guide: Pretty-Print & Beautify HTML
Learn how an HTML formatter pretty-prints and beautifies HTML, nesting rules, void elements, comments, common mistakes, and when to use a tool for ad-hoc edits.
- Network·7 min read
PUT vs PATCH: Which HTTP Method Should You Use?
PUT replaces a resource entirely while PATCH updates only the fields you send. Learn the difference, idempotency rules, and when to use each in your REST API.
- Converters·7 min read
Number Base Converter Guide: Binary, Hex, Octal & Decimal
Learn how a number base converter switches between binary, octal, decimal and hexadecimal, with real tested examples, JS and Python code, and common pitfalls.
- Network·7 min read
GET vs POST: Which HTTP Method Should You Use?
Compare GET vs POST HTTP methods: safety, idempotency, caching, query strings vs request bodies, and status codes. See real tested requests in JS and Python.
- Converters·8 min read
Cron Expression Parser Guide: Read & Debug Cron Schedules
Learn how a cron expression parser turns five-field schedules into plain English and next run times, with real examples, JS and Python code, and pitfalls.
- Network·7 min read
HTTP vs HTTPS: Which Should Your Site Use?
Compare HTTP vs HTTPS across encryption, the TLS handshake, SEO, and certificates. Learn when HTTPS is mandatory and how to inspect URLs and certs with tools.
- Text·8 min read
Text Diff Guide: Compare Two Texts & Spot Every Change
Learn how a text diff tool compares two texts with LCS, highlights line and character-level changes, side-by-side vs inline views - with JS and Python examples.
- Converters·7 min read
Markdown vs HTML: When to Write Which?
Compare Markdown vs HTML for docs and content: syntax, control, readability, and rendering. Learn when to write Markdown, raw HTML, or convert between them.
- Generators·8 min read
Password Generator Guide: Create Strong, Secure Passwords
Learn how a password generator builds strong random passwords with the Web Crypto API, character sets, length and entropy math - with JS and Python examples.
- Converters·7 min read
YAML vs JSON: Syntax, Types & When to Use Each
Compare YAML vs JSON across syntax, comments, data types, and parsing safety. See conversion examples and learn when to pick each format for configs or APIs.
- Formatters·7 min read
YAML Formatter Guide: Format & Beautify YAML Files
Learn how a YAML formatter beautifies config files with 2-space indentation, expands flow arrays, and normalizes quotes - with real JS and Python code examples.
- Colors·7 min read
HEX vs RGB: Which Color Format Should You Use?
Compare HEX vs RGB color formats: notation, alpha support, readability, and when to compute vs copy-paste. Learn to convert between them with examples.
- Formatters·8 min read
JSON to TypeScript Guide: Generate TS Types from JSON
Turn JSON samples into TypeScript interfaces and types with a converter. Learn array, nesting, and optional-field handling, plus JS and Python code examples.
- Converters·7 min read
CSV vs JSON: Which Data Format Should You Use?
Compare CSV vs JSON for data exchange: readability, data types, schema support, parsing, and file size. Learn when to choose CSV, JSON, or a converter.
- Formatters·6 min read
SQL Formatter Guide: Format & Beautify SQL Queries
Learn how a SQL formatter beautifies messy queries with proper indentation, keyword casing, and line breaks. See real examples and common mistakes to avoid.
- Calculators·6 min read
UTC vs Local Time: Which Should Your Code Use?
Compare UTC vs local time for storing timestamps, logging, and APIs. Learn timezone traps, how converters show offsets, and when to always prefer UTC.
- Encoders / Decoders·6 min read
JWT Decoder Guide: Parse & Verify JSON Web Tokens
Learn how a JWT decoder splits JSON Web Tokens into header, payload, and signature, decodes base64url, and why you should verify signatures before trusting claims.
- Encoders / Decoders·7 min read
URL Encoder Guide: Encode, Decode & Avoid Common Errors
Learn how a URL encoder applies percent-encoding, which characters to escape, UTF-8 handling, and mistakes like double-encoding, with JS and Python examples.
- Converters·7 min read
YAML vs TOML: Which Config Format Should You Use?
Compare YAML vs TOML for config files: syntax, readability, data types, nesting, and the type-inference traps. Learn when to pick YAML, TOML, or a converter.
- Generators·8 min read
Hash Generator Guide: MD5, SHA-1, SHA-256 & SHA-512
Learn how a hash generator computes MD5, SHA-1, SHA-256 and SHA512 digests, why hashes are one-way, collision risks, and when to use a tool instead of code.
- Formatters·7 min read
JSON vs XML: Which Data Format Should You Use?
Compare JSON vs XML across readability, parsing speed, schema support, and payload size. Learn when to choose JSON, XML, or a converter for your API or config.
- Generators·9 min read
UUID Generator Guide: Versions, v4 & How to Generate
Understand how a UUID generator works, UUID v1/v4/v5 differences, collision probability, and when to pick UUIDs over auto-increment IDs, with code examples.
- Testers·8 min read
Regex Tester Guide: Match, Capture Groups & Replace
Learn what a regex tester does: live matching, group capture, replacement, flag meanings, plus greedy vs. lazy quantifiers, backtracking pitfalls, and a quick pattern cheat sheet.
- Encoders / Decoders·9 min read
Base64 Guide: Encoding, Decoding & Common Pitfalls
Understand how Base64 maps binary to printable ASCII, why it is needed, how it differs from Base58/Base62, URL-safe variants, and common misuse cases, with examples.
- Formatters·10 min read
JSON Formatter Guide: Pretty-Print, Minify & Validate
Learn how a JSON formatter pretty-prints and minifies JSON, indentation rules, JSON5/JSONC, common validation errors, and key sorting — with JS and Python examples.