Developer Tools
Free online tools to help with your everyday development tasks.
Formatters
{ }JSON Formatter
Format, validate, and minify JSON data.
</>HTML Formatter
Beautify or minify HTML code.
#CSS Formatter
Beautify or minify CSS stylesheets.
jsJS Formatter
Beautify or minify JavaScript code.
SQLSQL Formatter
Format SQL queries for readability.
<xml>XML Formatter
Format and validate XML documents.
Encoders & Decoders
Converters
⇄JSON ↔ YAML
Convert between JSON and YAML formats.
⇄JSON ↔ CSV
Convert between JSON and CSV formats.
0xNumber Base Converter
Convert between Hex, Decimal, Binary, Octal.
TUnix Timestamp
Convert between dates and Unix timestamps.
AaCase Converter
Convert text to camelCase, snake_case, etc.
TSJSON to TypeScript
Generate TypeScript interfaces from JSON.
{ }JSON Schema Generator
Generate JSON Schema from sample data.
SQLSQL to JSON
Convert SQL CREATE/INSERT to JSON.
TXTText to HTML
Convert plain text to HTML with auto-detection.
Generators
#UUID Generator
Generate UUID/GUID values.
#Hash Generator
Generate MD5, SHA1, SHA256, SHA512 hashes.
P*Password Generator
Generate secure random passwords.
AaLorem Ipsum
Generate placeholder text.
▣QR Code Generator
Generate QR codes from text or URLs.
/Slug Generator
Convert text to URL-friendly slugs.
OGMeta Tag Generator
Generate SEO meta and Open Graph tags.
IMGPlaceholder Image
Generate placeholder images with custom size.
▦HTML Table Generator
Generate HTML table code with styling options.
BOTrobots.txt Generator
Generate robots.txt for search engine control.
.ht.htaccess Generator
Generate Apache .htaccess rules.
DMock Data Generator
Generate realistic fake data for testing.
RMREADME Generator
Generate professional README.md files.
Testers & Inspectors
.*RegEx Tester
Test regular expressions with highlighting.
±Text Diff
Compare two texts and see differences.
MDMarkdown Preview
Preview Markdown with live rendering.
ΣString Inspector
Analyze text: char count, word count, etc.
$.JSON Path Evaluator
Evaluate JSONPath expressions against data.
CSVCSV Viewer
View CSV data as a sortable table.
{T}JSON Tree Viewer
Visualize JSON as an interactive tree.
▶Live Code Preview
Online code editors and compilers.
SVGSVG Preview
Preview and optimize SVG code.
≠JSON Compare
Compare two JSON objects and see diffs.
[ ]Responsive Tester
Test URLs at different screen widths.
CSS Visual Tools
GGradient Generator
Create CSS gradients visually with presets.
▪Box Shadow Generator
Create CSS box shadows with live preview.
[ ]Flexbox Playground
Experiment with Flexbox properties visually.
▦Grid Generator
Create CSS Grid layouts visually.
pxCSS Unit Converter
Convert between px, rem, em, pt, vw, vh.
◜Border Radius
Create CSS border-radius visually.
TsText Shadow
Create CSS text-shadow with live preview.
▸▸Animation Generator
Create CSS keyframe animations visually.
FFilter Generator
Apply CSS filter effects with live preview.
↻Transform Generator
Create CSS transform effects visually.
✂Clip Path Generator
Create CSS clip-path shapes visually.
|||Multi-Column
Create CSS multi-column layouts visually.
Colors
Text Utilities
↕Line Sort/Dedupe
Sort lines and remove duplicates.
\Escape/Unescape
Escape or unescape special characters.
URLURL Parser
Parse and analyze URL components.
WcWord Counter
Count words, characters, and reading time.
:)Emoji Picker
Browse, search, and copy emojis.
UTFEncoding Detector
Analyze text encoding and byte representation.
Dev Utilities
*Cron Parser
Parse cron expressions with next run times.
755Chmod Calculator
Calculate Unix file permissions.
200HTTP Status Codes
Searchable HTTP status code reference.
MMIME Type Lookup
Search MIME types by file extension.
16:9Aspect Ratio Calculator
Calculate and convert aspect ratios.
OGSocial Share Preview
Preview social media share cards.
AaFont Preview
Preview web-safe and Google Fonts.
IMGImage Converter
Convert images between PNG, JPEG, WebP.
MINCSS/JS Minifier
Minify CSS or JS with compression stats.
PXPixel Ruler
Visualize pixel spacing scales.
📱Device Mockup
Place screenshots in device frames.