Developer Tools
Collection of free, privacy-focused online utilities designed to boost your productivity. All tools run entirely in your browser—no data ever leaves your device.
Text & Code
Base64 Encoder/Decoder
Convert text or files to and from Base64 encoding format.
JSON Formatter
Beautify, validate, sort keys, or minify JSON data instantly.
JSON Minifier
Quickly strip whitespace to reduce JSON file size.
JSON Tree Viewer
Visualize JSON structure with expandable tree and search functionality.
YAML ⇄ JSON Converter
Convert between YAML and JSON formats with formatting options.
URL Encoder / Decoder
Encode or decode URL components with automatic real-time transformation.
Text & File Diff Checker
Compare two texts or files with line-by-line highlighted differences.
Text to Mindmap
Transform hierarchical text into beautiful, interactive mindmaps with custom layouts and themes.
Regex Tester
Test and debug regular expressions in real-time with match highlighting, capture groups, and common patterns.
Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text or files. Compare and verify hashes.
Lorem Ipsum Generator
Generate placeholder text in paragraphs, sentences, or words. Copy as plain text or HTML.
Markdown Preview
Write and preview Markdown in real-time. Supports headers, lists, code blocks, tables, and more.
CSV to JSON Converter
Convert between CSV and JSON formats. Supports custom delimiters, headers, and quoted fields.
JWT Decoder
Decode and inspect JSON Web Tokens. View header, payload, claims, and check expiration status.
Text Case Converter
Convert text between camelCase, snake_case, PascalCase, kebab-case, UPPER, lower, Title Case, and more.
JSON to TypeScript
Convert JSON objects to TypeScript interfaces automatically. Handles nested objects, arrays, and unions.
Word & Character Counter
Count words, characters, sentences, paragraphs. Estimate reading time and find keyword density.
HTML Entity Encoder/Decoder
Encode and decode HTML entities. Supports named, numeric, and hex entity references.
SQL Formatter
Format and beautify SQL queries with syntax highlighting. Customizable indentation and keyword casing.
JSON Diff
Compare two JSON objects and see added, removed, and modified properties highlighted in a tree view.
Markdown Table Generator
Create Markdown tables visually with a spreadsheet editor. Set alignment and import from CSV.
Line Sorter & Deduplicator
Sort lines alphabetically or by length, remove duplicates, trim whitespace, shuffle, and filter blank lines.
Utilities
Cron Schedule Generator
Create and understand cron expressions with next execution preview.
PDF Merger
Combine multiple PDF files into one. Reorder pages and merge instantly in your browser.
PDF to Images
Extract all pages from PDF as individual PNG or JPEG images with quality control.
Images to PDF
Convert multiple images into a single PDF document. Drag to reorder pages easily.
YouTube Thumbnail Fetcher
Download YouTube video thumbnails in multiple resolutions instantly.
PDF Annotator
Annotate PDFs with text, images, drawings, and signatures online.
Password Generator
Generate strong, secure random passwords with customizable length, characters, and strength indicator.
QR Code Generator
Create custom QR codes for URLs, text, email, WiFi, and more. Download as PNG or SVG.
Color Picker & Converter
Pick colors and convert between HEX, RGB, and HSL formats. Generate palettes and complementary colors.
UUID Generator
Generate random UUID v4 identifiers. Bulk generate, copy, and download. Supports uppercase and no-hyphen formats.
Unix Timestamp Converter
Convert Unix timestamps to dates and vice versa. Supports seconds, milliseconds, and multiple formats.
Number Base Converter
Convert between binary, octal, decimal, and hexadecimal. Custom bases 2-36 with bit visualization.
Meta Tag Generator
Generate HTML meta tags for SEO, Open Graph, and Twitter Cards. Preview Google and social media appearance.
Open Graph Preview
Preview how your website looks on Facebook, Twitter, LinkedIn, Slack, and Discord before sharing.
Chmod Calculator
Calculate Unix file permissions interactively. Convert between numeric (755) and symbolic (rwxr-xr-x) notation.
Image Tools
Image Editor
Edit images with color adjustments, creative presets, and special effects.
Image Resizer & Cropper
Resize and crop images to rectangle or circle with manual controls.
Circular Image Cropper
Crop images into perfect circular shape with adjustable radius.
Camera Capture & Crop
Capture photos from your device camera and crop into circles.
Image Compressor
Compress images with quality control and batch processing up to 10 files.
Image Thumbnail Generator
Generate image thumbnails in multiple preset sizes or custom dimensions for social media and websites.
Favicon Generator
Generate favicons in multiple sizes from any image. Download PNG favicons for your website.
Image to Base64
Convert images to Base64 strings and data URIs. Copy as raw Base64, HTML img tag, or CSS background.
Screenshot Beautifier
Make screenshots beautiful with gradient backgrounds, shadows, rounded corners, and macOS-style window frames.
Social Media Image Resizer
Resize images for Instagram, Twitter, YouTube, Facebook, LinkedIn, Pinterest, and TikTok with one click.
Color Palette from Image
Extract dominant colors from any image. Get HEX, RGB, HSL values and export as CSS variables or Tailwind config.
Watermark Generator
Add text watermarks to images. Customize font, opacity, rotation, and position. Supports tiled patterns.
Placeholder Image Generator
Generate placeholder images with custom dimensions, colors, and text for mockups and development.
CSS Tools
CSS Gradient Generator
Create beautiful linear and radial CSS gradients visually. Multiple color stops, presets, and live preview.
CSS Box Shadow Generator
Build CSS box shadows visually with multiple layers, inset shadows, and preset styles.
CSS Flexbox Generator
Build Flexbox layouts visually. Configure direction, alignment, wrapping, gap, and individual item properties.
CSS Grid Generator
Create CSS Grid layouts visually. Set columns, rows, gaps, and alignment with live preview and presets.
Border Radius Generator
Create CSS border-radius visually. Set individual corners, advanced organic shapes, and copy CSS instantly.
SVG Wave Generator
Create beautiful SVG wave shapes for section dividers. Customize layers, colors, and styles. Copy SVG code.
Content Creator
Fancy Text Generator
Generate stylish Unicode text for social media bios. Bold, italic, cursive, gothic, bubble, and more styles.
Twitter/X Thread Formatter
Split long text into tweet-sized chunks with auto-numbering. Preview your thread before posting.
Quote Image Maker
Create beautiful quote cards for social media with gradient backgrounds, custom fonts, and sizes.
Emoji Picker
Browse, search, and copy 300+ emojis. View Unicode codes, shortcodes, and HTML entities.
Why Use AppsFactory Developer Tools?
AppsFactory provides a comprehensive suite of free online developer tools designed to streamline your workflow. Whether you're encoding Base64, formatting JSON, editing images, or comparing text files, our tools offer:
- Complete Privacy: All processing happens in your browser—no data is sent to servers
- No Registration Required: Start using tools immediately without creating an account
- Always Free: All tools are completely free with no hidden costs or premium tiers
- Modern Interface: Clean, intuitive design with dark mode support
- Mobile Friendly: Responsive design works perfectly on all devices
- Regular Updates: New tools and features added based on community feedback
Popular Developer Tools
Our most-used tools include the JSON Formatter for beautifying and validating JSON data,Image Resizer for quick image optimization, Base64 Encoder for encoding files,URL Encoder for safe URL parameter encoding, and Text Diff Checker for comparing code changes.
Built for Developers, By Developers
Created by Gorav Singal, AppsFactory is developed with love ❤️ to provide practical utilities that solve real developer problems. Each tool is crafted with attention to detail, performance, and user experience.