Online Tools
A collection of free, browser-based tools for developers, writers, and everyday tasks. All processing happens in your browser — your data stays on your device.
Code & Data
JSON Formatter & Validator
Pretty-print and validate JSON with error highlighting.
Base64 Encode / Decode
Convert plain text to Base64 and decode Base64 back to text.
SQL Formatter
Format SQL queries to improve readability for SELECT, JOIN and more.
CSV ↔ JSON Converter
Convert CSV with headers to JSON and JSON arrays back to CSV.
Developer
Regex Tester
Test regular expressions and see all matches highlighted in your text.
API Request Builder
Build and send HTTP requests from your browser. Configure method, headers, and body, then inspect status, headers, and response.
Code to UML Diagram
Convert simple class-like code into a Mermaid UML class diagram and preview it instantly.
Media & Files
Image Compressor
Compress images in your browser by adjusting quality and maximum width. No uploads required.
Image Format Converter
Convert images between JPG, PNG, and WebP formats using a browser-based canvas.
Video to GIF Converter
Convert short video clips to animated GIFs in your browser with ffmpeg.wasm.
HEIC to PNG/JPG Converter
Convert HEIC photos from iPhones to standard PNG or JPG images directly in your browser.
Productivity
Pomodoro Timer
Use a simple Pomodoro timer with configurable focus and break durations to structure your deep work sessions.
Meeting Minutes Template
Fill in a structured meeting minutes template with agenda, notes, and action items, then copy it to share with your team.
Task Prioritization Matrix
Sort tasks into an Eisenhower matrix (Do, Schedule, Delegate, Eliminate) to focus on what truly matters.
Daily Habit Tracker
Track your daily habits with simple checkboxes and a progress bar to build consistent routines.
Grammar & Spell Checker
Paste your writing, use browser spellcheck, and get simple readability hints on sentence length and clarity.
Title / Headline Generator
Generate title ideas for blog posts, newsletters, and videos based on your topic and tone.
Email Subject Line Analyzer
Score your email subject lines for length, clarity, and spam triggers with quick suggestions.
Kanban Board
Visualize your tasks on a drag-and-drop Kanban board with multiple columns and customizable cards.
Security
Text & Documents
Remove Invisible Characters
Clean hidden characters like zero-width and non-breaking spaces from text.
Case Converter
Convert text to uppercase, lowercase, title case, snake_case, camelCase and more.
Word & Character Counter
Count words, characters, lines and sentences for any text.
Text Compare
Compare two pieces of text and highlight character differences.
PDF Compressor
Re-save and lightly compress PDF files directly in your browser using pdf-lib.
Photos to PDF Converter
Combine multiple photos into a single PDF file directly in your browser using pdf-lib.
Web Design & UI
URL Encode / Decode
Percent-encode or decode URLs and query strings for web use.
HTTP Header Checker
Fetch and inspect HTTP response headers for a given URL.
URL Shortener (Demo)
Generate demo short URLs from long links on the front-end.
Color Picker & Palette Generator
Pick a base color and generate tints, shades, and accent colors. Copy HEX values for your UI and design work.
Gradient Generator
Create linear gradients with multiple color stops and angles. Preview and copy the CSS code.
Favicon Generator
Generate simple text-based PNG favicons using colors and initials, ready to use as favicon.png.
QR Code Generator
Generate QR codes from URLs or text and download them as PNG images.
Colorblind Accessibility Simulator
Simulate how your color palette looks for different types of colorblindness to improve UI accessibility.
Web Font Previewer
Preview custom text in multiple web-safe and system font stacks to compare typography for your site.
CSS Grid & Flexbox Generator
Configure flexbox or grid layouts, preview them with sample boxes, and copy the generated CSS.