🛠️ Online Developer Tools

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JSON Formatter

Format, validate, minify

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YAML ⇔ JSON

Two-way conversion

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CSV ⇔ JSON

Delimiter & header row

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CSV Cleaner

Dedupe, sort, blanks, extract cols

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XML ⇔ JSON

Attributes, CDATA, array auto

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JSON Diff

Structural compare with JSON Pointer

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JSONPath

$ queries · filters · recursive

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TOML ⇔ JSON / YAML

Hugo / Cargo / pyproject · two-way

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JSON → Types

TS / PHP / Python / Go / Rust

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JSON Schema

Validation + error location

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cURL ⇄ fetch

13 languages

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Base64

Encode / decode

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URL Encode

encodeURIComponent

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String Escape

HTML / JS / JSON / Unicode / SQL

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Image Converter

PNG ⇄ WebP ⇄ JPEG ⇄ AVIF

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Image Mosaic / Blur

Region select · mosaic · blur · black

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Image BG Remover

White → transparent PNG · tolerance

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Image Resize

Width / height, batch

✂️

Image Crop

Drag · 1:1 / 4:3 / 16:9

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Image Rotate / Flip

90° · flip · free angle

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Image Watermark

Text · 9 positions · tile

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Image → Base64

Drag & drop

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EXIF

GPS, date, camera + strip

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SVG Optimizer

Strip metadata · JSX output

⬛

QR Code

URL / WiFi / vCard / SVG · PNG

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Color Converter

HEX / RGB / HSL / HSV

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Color Palette

Top 5/10/16 from image

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JWT Decoder

Header & payload viewer

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JWT Signer

HS256 / HS384 / HS512

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File Hash

MD5 / SHA-1 / SHA-256

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Text Hash

SHA-256 / SHA-1

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Password Generator

Cryptographic RNG

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PII / Secret Masker

Email / Phone / Card / JWT / AWS

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Email Validator (Bulk)

RFC · disposable · role · duplicate

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Regex Tester

Match highlight & groups

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Text Diff

Line-by-line compare

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Markdown

Real-time HTML

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SQL Formatter

Beautify / minify

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HTML/CSS/JS

Minify / beautify

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Case Converter

camelCase / snake_case / kebab

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Lorem Ipsum

English / Japanese

↵

Line Endings & Encoding

LF / CRLF / BOM / UTF-8 / SJIS

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OpenAPI → cURL

cURL for every endpoint

🗣️

Crontab → Human

5 langs + next runs

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Excel Paste Formatter

TSV · formula escape

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Markdown TOC Generator

h1–h6 · GitHub slug · MD/HTML/plain

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HTML Paste Preview

Sandbox iframe · widths · email

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Mermaid Live Preview

flowchart / sequence / gantt · SVG/PNG

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robots.txt Tester

14 crawlers

⏰

Cron Parser

Next 10 runs

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CIDR / Subnet

IPv4 / IPv6

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Punycode / IDN

IDN ⇄ xn-- (RFC 3492)

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Number Base

2 / 8 / 10 / 16

⏱️

Timestamp

Unix ⇔ ISO 8601

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Timezone Converter

World clock · DST · 8 cities

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Phone Formatter

Intl / E.164 · 30+ countries

🆔

UUID v4

Bulk 1–100

🎲

Test Data

CSV / JSON / SQL

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Byte Converter

MB / MiB / GB / GiB

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HTTP Status

Lookup & fix

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Sales Tax Calculator

In/excl tax · 10%/8% · batch

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Date Calculator

Diff · add/sub · workdays · age

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robots.txt Generator

20+ crawlers · AI presets

🗺️

sitemap.xml Generator

hreflang · image/video

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hreflang Generator

International SEO · x-default

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ads.txt Generator

AdSense · Amazon · SSPs

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JSON-LD Generator (schema.org)

9 structured data types

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.htaccess Generator

Apache: HTTPS / HSTS / gzip / WP

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nginx.conf Generator

HTTP/2 / TLS / PHP-FPM / proxy

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docker-compose Generator

6 presets · multi-service

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GitHub Actions Generator

CI/CD workflow YAML

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.env → docker-compose

environment block · secret warn

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.env.example Generator

Sanitize real .env safely

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Web App Manifest Generator

PWA manifest.json + HTML tag

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OGP Image Generator

1200x630 · gradient presets

📸

Code Screenshot

Syntax highlight + theme

⭐

Favicon Generator

All sizes + manifest ZIP

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PDF Merge / Split / Reorder

Multiple PDFs · drag reorder

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PDF Text Extractor

Per-page · copy · TXT

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CSS Gradient

linear / radial / conic

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CSS box-shadow

Stack layers · presets

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CSS cubic-bezier

SVG editor · animation