Dev Nestio - DEV Community

Dev Nestio

Jul 5

5 Free Browser-Based Dev Tools: GraphQL Formatter, Docker Compose Validator, Dockerfile Linter, and More

#docker #graphql #devtools #security

2 min read

Dev Nestio

Jul 2

HTTP Security Headers Reference: 11 Headers, Risk Levels, and Code Snippets

#security #webdev #http #node

3 min read

Dev Nestio

Jul 2

CSS Backdrop Filter Generator: Build Glassmorphism Effects with Live Sliders

#css #webdev #frontend #glassmorphism

2 min read

Dev Nestio

Jul 2

HTTP Cache-Control Builder: Toggle Directives, Detect Conflicts, Copy Code

#http #webdev #performance #nginx

2 min read

Dev Nestio

Jul 2

CORS Headers Generator: Stop Guessing, Start Copying

#cors #webdev #javascript #nginx

2 min read

Dev Nestio

Jul 2

TypeScript Utility Types Reference: All 22 Built-in Types with Examples

#typescript #webdev #javascript #programming

2 min read

Dev Nestio

Jul 2

TCP/UDP Port Reference — Searchable Well-Known Port Numbers

#network #webdev #tools #devops

1 min read

Dev Nestio

Jul 2

Timezone Converter — Convert Time Between World Timezones

#javascript #webdev #tools #intl

1 min read

Dev Nestio

Jul 2

Luhn Algorithm Checker — Validate & Generate Credit Card Numbers

#javascript #webdev #tools #algorithms

1 min read

Dev Nestio

Jul 2

CSS Filter Generator — Visual filter() Builder with Live Preview

#css #webdev #tools #frontend

1 min read

Dev Nestio

Jul 2

Roman Numeral Converter — Arabic ↔ Roman up to 3,999,999

#javascript #webdev #tools #math

1 min read

Dev Nestio

Jul 2

Morse Code Converter — Text to Morse with Web Audio Playback

#javascript #webdev #tools #webaudio

1 min read

Dev Nestio

Jul 2

Image EXIF Viewer — Read Photo Metadata Locally in Your Browser

#javascript #webdev #tools #privacy

1 min read

Dev Nestio

Jul 2

CSS Triangle Generator — Pure CSS Triangles in 8 Directions

#css #webdev #tools #frontend

1 min read

Dev Nestio

Jul 2

Percentage Calculator — 6 Modes for Every Percent Math Problem

#javascript #webdev #tools

1 min read

Dev Nestio

Jul 2

Number to Words Converter — Spell Out Any Number in English

#javascript #webdev #tools

1 min read

Dev Nestio

Jul 2

IPv6 Address Calculator: Expand, Compress, Prefix Ranges with BigInt

#networking #javascript #webdev #devtools

2 min read

Dev Nestio

Jul 2

Unicode Character Search: UTF-8 Bytes, HTML Entities, JS Escapes in One Tool

#webdev #javascript #devtools #unicode

2 min read

Dev Nestio

Jul 2

HTML to Markdown Converter: Using DOMParser for Reliable Conversion

#javascript #webdev #devtools #markdown

2 min read

Dev Nestio

Jul 2

JSONPath Tester: Query JSON with a Vanilla JS Engine — No Libraries

#javascript #webdev #devtools #json

1 min read

Dev Nestio

Jul 2

ANSI Color Code Generator: Build Terminal Escape Sequences Visually

#webdev #devtools #terminal #javascript

2

1 min read

Dev Nestio

Jul 2

Bitwise Calculator: Visual 32-bit AND/OR/XOR/NOT/Shifts in Your Browser

#webdev #javascript #devtools #opensource

1

1 min read

Dev Nestio

Jul 1

Build a YAML ↔ JSON Converter in Vanilla JS (Browser-Only)

#javascript #yaml #json #webdev

2 min read

Dev Nestio

Jul 1

Build a Markdown to HTML Converter with Syntax Highlighting

#javascript #webdev #markdown #tools

1 min read

Dev Nestio

Jul 1

Build a Text Line Sorter with Sort, Dedup, Filter & Replace

#javascript #webdev #tools #text

1 min read

Dev Nestio

Jul 1

Implement semver Bump, Compare & Range Check in Vanilla JS

#javascript #semver #webdev #tools

1 min read

Dev Nestio

Jul 1

Build a URL Slug Generator Supporting 8 Case Formats

#javascript #webdev #tools #text

1 min read

Dev Nestio

Jul 1

JSON ↔ CSV Converter with Nested Object Flattening

#javascript #json #csv #webdev

1 min read

Dev Nestio

Jul 1

Flesch Reading Ease Score Calculator in the Browser

#javascript #webdev #tools #text

1 min read

Dev Nestio

Jul 1

Build a CSS Unit Converter: px, rem, em, vw, vh and More

#css #javascript #webdev #tools

1 min read

Dev Nestio

Jul 1

Browser-Only XML Formatter with DOMParser and Syntax Highlighting

#javascript #xml #webdev #tools

1 min read

Dev Nestio

Jul 1

SVG Path Command Inspector: Parse & Visualize d Attributes

#javascript #svg #webdev #tools

1 min read

Dev Nestio

Jul 1

Build a Browser-Only OpenAPI / Swagger Validator

#javascript #api #openapi #webdev

1 min read

Dev Nestio

Jul 1

Browser-Only .htaccess Generator with Section Toggles

#javascript #apache #webdev #tools

1 min read

Dev Nestio

Jul 1

RFC 4648 Base32 Encoder/Decoder in Vanilla JS

#javascript #webdev #tools #encoding

1 min read

Dev Nestio

Jul 1

Build a Browser-Only TOTP 2FA Generator with Web Crypto API

#javascript #security #webdev #tools

1 min read

Dev Nestio

Jul 1

I built a CSS Minifier and Beautifier — browser-only, compression stats, 80 tests

#css #webdev #javascript #tools

1 min read

Dev Nestio

Jul 1

I built a Robots.txt Generator — visual bot picker, AI crawler presets, download, 84 tests

#webdev #seo #javascript #tools

1 min read

Dev Nestio

Jul 1

I built a browser-only JSON to TypeScript Interface Generator — nested objects, arrays, options, 86 tests

#typescript #webdev #javascript #tools

1 min read

Dev Nestio

Jul 1

I built a browser-only HTTP Cookie Inspector — parse Set-Cookie, security score, XSS/CSRF flags, 84 tests

#webdev #security #javascript #tools

1

2 min read

Dev Nestio

Jul 1

I built a browser-only JWT Creator & Signer — HS256/384/512, verify, expiry check, 77 tests

#webdev #security #javascript #tools

2 min read

Dev Nestio

Jul 1

I built a browser-only Aspect Ratio Calculator — resize with ratio lock, common presets, 102 tests

#webdev #css #design #tools

2 min read

Dev Nestio

Jul 1

I built a browser-only Unix Permissions Calculator — chmod octal & symbolic, visual checkboxes, 79 tests

#webdev #linux #bash #tools

2 min read

Dev Nestio

Jul 1

I built a browser-only Text Diff Viewer — side-by-side & inline, additions/deletions highlighted, 84 tests

#webdev #javascript #tools #productivity

2 min read

Dev Nestio

Jul 1

I built a browser-only Color Contrast Checker — WCAG AA/AAA, hex+RGB input, 96 tests

#webdev #a11y #css #tools

2 min read

Dev Nestio

Jul 1

I built a browser-only Keyboard Shortcut Reference — VS Code, Chrome & Mac, searchable, 91 tests

#webdev #javascript #productivity #tools

1 min read

Dev Nestio

Jul 1

URL Encoder/Decoder – encodeURIComponent, URL Breakdown & Query Builder (Free Tool)

#webdev #tools #javascript #programming

1 min read

Dev Nestio

Jul 1

Lorem Ipsum Generator – Paragraphs, Sentences & Words with HTML Output (Free Tool)

#webdev #tools #javascript #programming

1 min read

Dev Nestio

Jul 1

Hash Generator – MD5, SHA-1, SHA-256, SHA-512 from Text or File (Free Browser Tool)

#webdev #tools #javascript #programming

2 min read

Dev Nestio

Jul 1

JWT Decoder – Inspect Header, Payload & Expiry Instantly (Free Browser Tool)

#webdev #tools #javascript #programming

2 min read

Dev Nestio

Jul 1

Base64 Encoder/Decoder – Text & File, URL-Safe, MIME Line Breaks (Free Tool)

#webdev #tools #javascript #programming

1 min read

Dev Nestio

Jul 1

Regex Tester – Real-Time Regular Expression Testing with Match Highlighting

#webdev #tools #javascript #regex

1

1 min read

Dev Nestio

Jul 1

Unix Permissions Calculator – Visual chmod Tool with Octal & Symbolic Notation

#webdev #tools #linux #devops

2 min read

Dev Nestio

Jul 1

Text Diff Viewer – Side-by-Side & Inline Diff with Word-Level Highlighting

#webdev #tools #javascript #programming

1 min read

Dev Nestio

Jul 1

Color Contrast Checker – WCAG AA/AAA Compliance Tool (Free, Browser-Based)

#webdev #tools #javascript #a11y

1 min read

Dev Nestio

Jul 1

HTTP Status Code Reference – All 1xx–5xx Codes with Descriptions & Use Cases

#webdev #tools #javascript #programming

1 min read

Dev Nestio

Jul 1

Keyboard Shortcut Reference for VS Code, Chrome & Mac – Free Browser Tool

#webdev #tools #javascript #programming

1 min read

Dev Nestio

Jul 1

I built a Code Snippet Formatter — syntax highlight code and export as PNG

#webdev #tools #javascript #programming

1 min read

Dev Nestio

Jul 1

I built an Aspect Ratio Calculator — resize dimensions, simplify ratios, explore common ratios

#webdev #tools #javascript #programming

1 min read

Dev Nestio

Jul 1

I built a CSS Specificity Calculator with per-token breakdown and selector comparison

#webdev #tools #javascript #programming

1 min read

Want to connect with Dev Nestio?