👨💻 Developer Tools
18 tools in this category, on DoubleNeed.
JSON Formatter
Format, validate, and minify JSON data.
Open tool →UUID Generator
Generate random UUID v4 identifiers, one or in bulk.
Open tool →Regex Tester
Test regular expressions against sample text with live matches.
Open tool →Random Number Generator
Generate random numbers within any range, with optional uniqueness.
Open tool →Lorem Ipsum Generator
Generate placeholder text for designs and mockups.
Open tool →CSS Unit Converter
Convert between px, rem, em, and other CSS units.
Open tool →HTML Entity Encoder/Decoder
Encode or decode HTML special characters and entities.
Open tool →Binary/Hex/Decimal Converter
Convert numbers between binary, hexadecimal, and decimal.
Open tool →Text to Binary Converter
Convert text to binary code and back.
Open tool →HTML/CSS/JS Minifier
Shrink your HTML, CSS, or JavaScript by removing whitespace and comments.
Open tool →Cron Expression Generator
Build a valid cron schedule expression with a plain-English explanation.
Open tool →Image Crop Ratio Calculator
Find the largest centered crop for any target aspect ratio.
Open tool →Color Palette Generator
Generate complementary, analogous, triadic, or monochromatic color palettes.
Open tool →URL Encoder/Decoder + UTM QR Generator
Encode/decode URLs and build trackable UTM campaign links with a QR code.
Open tool →SQL Formatter & Validator
Format messy SQL queries and check for basic syntax errors.
Open tool →JWT Decoder & Validator
Decode a JWT token and inspect its header, payload, and expiry.
Open tool →AI Prompt & Content Idea Generator
Generate ready-to-use AI prompts for content ideas — focused on Bangladeshi medical, freelancing, and Islamic content niches.
Open tool →Barcode (EAN-13) Generator & Printable Label Maker
Generate a standard EAN-13 barcode from a product number and print a ready-to-use label.
Open tool →📚 Guides & Tutorials
Learn how to use these tools effectively with our in-depth guides and tutorials.
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