I like software that is simple to use and easy to maintain. Clean code, clear decisions, and no unnecessary complexity.

I work across backend and frontend, so I can take a feature from idea to production with consistency and less handoff friction.

Calculate your budget using the popular 50/30/20 rule - allocate 50% to needs, 30% to wants, and 20% to savings

Frequently Asked Questions

Enter your monthly income to calculate your budget breakdown

Your Income

Your Budget Breakdown

Suggested Allocation

Budgeting Tips

50/30/20 Budget Calculator

The 50/30/20 budget rule is a simple method to manage your money. It divides your after-tax income into three categories to help you save while still enjoying life.

What is the 50/30/20 Rule?

Create, adjust, and export color palettes for real projects.

Color Palette Generator

Contact

A collection of practical tools I built to solve everyday tasks.

Tools

Fullstack dev & DevSecOps enthusiast.

Hi, I'm Arielton.

Create compelling LinkedIn headlines that attract recruiters and increase profile views by up to 17x

The best headlines clearly communicate your value to your target audience.

Winning Formula

Tell us about yourself to generate optimized headlines

Your Professional Details

Generated Headlines

LinkedIn Headline Tips

LinkedIn Headline Generator

Generate strong passwords with the exact rules you need.

Password Generator

Image upscaling app using AI models. Users upload low-res images and get enhanced versions. Built the frontend in Next.js with Supabase for storage and Beam for ML inference.

Upscaler @ Tocolabs

Anonymous note-sharing platform inspired by the IRL project of the same name. People can post and read anonymous messages. Built with RedwoodJS and CockroachDB.

Notes To Strangers

NFT collection website with smart contract integration. Users can view the collection and make purchases directly through the site.

Offbeat Axolotls

Python script that calculates how much of the year has passed and posts it to Instagram automatically.

Year Progress

Event website for TEDxCastro with event info and ticket sales.

TEDxCastro Website

Projects

Generate QR codes for links, text, Wi-Fi, and more.

Enter content and click "Generate QR Code" to see your QR code here

QR Code Generator

e.g., for Fortune 500 client, across 5 departments

Generate ATS-optimized resume bullets with strong action verbs and quantified achievements that pass applicant tracking systems

Describe your accomplishment and we'll generate ATS-friendly bullet points

Achievement Details

Target Job Title

e.g., Software Engineer, Marketing Manager

Metrics Examples

Generated Bullets

ATS Best Practices

ATS Resume Bullet Generator

Check loading speed and core performance metrics for any URL.

Test Results

Website Speed Test

Tech I Use

Calculate your exact age in years, months, days, and more

Age Calculator

Base64 Encoder/Decoder

URL-Safe Encoding

Discover your rebound window

Pattern Analysis

Biorhythm Analysis

Report

Evolution Today

How do you feel?

Quick Check-in

Track your medication cycle and energy levels

Biorhythm Tracker

Calculate your Body Mass Index and check your weight category

BMI Calculator

Create CSS box shadows with visual editor

Box Shadow Generator

Calculate your budget using the 50/30/20 rule for financial planning

Validate canonical URLs and catch common indexing mistakes.

Canonical URL Checker

Convert text between different case formats instantly

Case Converter

Title Case

Check color contrast ratios for WCAG accessibility compliance

The quick brown fox jumps over the lazy dog

Color Contrast Checker

Convert colors between HEX, RGB, HSL, HSV, and CMYK formats

Color Converter

Create, customize, and export beautiful color palettes for your design projects

Build and validate cron expressions with a visual editor

Cron Expression Generator

Convert between CSV and JSON formats easily

CSV/JSON Converter

Useful tools for developers and designers. Free and browser-based.

Compare two texts and highlight the differences

Enter text in both fields to see the differences

Diff Checker

Create beautiful CSS gradients with live preview

CSS Gradient Generator

Generate MD5, SHA-1, SHA-256, SHA-512 hashes

Hash Generator

Verify Hash

Create hreflang tags for multilingual SEO and validate locale mappings.

Hreflang Generator

Encode and decode HTML entities for safe display

HTML Encoder/Decoder

Convert images between PNG, JPG, and WebP formats

Image Converter

Upload Image

JSON Formatter

Parse Error

JSON Formatter & Validator

Convert JSON objects to TypeScript interface or type definitions

JSON to TypeScript Converter

Decode JSON Web Tokens securely in your browser

JWT Decoder

Create and sign JSON Web Tokens with custom payloads

JWT Encoder

Check keyword density to optimize your content for search engines

Keyword analysis results

Keyword Density Checker

Create compelling LinkedIn headlines that attract recruiters

Generate placeholder text for designs and mockups

Lorem Ipsum Generator

Markdown Editor

Preview

Markdown Preview

Convert Markdown text to HTML with live preview

Markdown to HTML Converter

Generate complete meta tags for SEO and social previews.

Meta Tag Generator

Generate strong, secure passwords with custom options

Calculate percentages, percentage change, tips, and more

Percentage Calculator

Stay focused with the Pomodoro technique timer

Pomodoro Timer

QR Code Decoder

Create custom QR codes with colors and different sizes

Test and debug regular expressions in real-time

Regex Tester

Generate ATS-optimized resume bullets with strong action verbs and quantified achievements

Generate robots.txt rules to control crawling and include sitemap directives.

Robots.txt Generator

Preview Google result snippets and validate title/meta description length.

SERP Snippet Preview

Convert text to URL-friendly slugs for SEO optimization

Slug Generator

Convert between Unix timestamps and human dates

Timestamp Converter

Developer tools

Convert between different units of measurement

Unit Converter

Encode and decode URLs for safe transmission

URL Encoder/Decoder

Turn long URLs into short, shareable links instantly

URL Shortener

Generate unique identifiers (UUID v1 & v4)

UUID Generator

Validate UUID

Generate scroll-stopping hooks for TikTok, Reels, and Shorts

Viral Hook Generator

Count words, characters, sentences, and paragraphs in your text

Word Counter

Calculate your exact age in years, months, days, hours, and minutes. Find out your zodiac sign and days until next birthday. Free age tool.

Age Calculator - Calculate Exact Age in Years & Days

Encode and decode Base64 strings instantly. Supports text and files. URL-safe encoding option. Free online Base64 conversion tool.

Base64 Encoder & Decoder - Encode Text Online Free

Calculate your BMI using metric or imperial units. See your weight category and healthy weight range. Includes health guidance. Free calculator.

BMI Calculator - Calculate Body Mass Index Free

Design CSS box shadows with a visual editor. Multiple layers, presets, and live preview. Copy CSS instantly. Free online shadow generator.

CSS Box Shadow Generator - Visual Shadow Editor

Calculate your budget using the 50/30/20 rule. Allocate needs, wants, and savings automatically. Customize percentages. Free budget planner.

50/30/20 Budget Calculator - Plan Your Finances

Convert text between uppercase, lowercase, title case, sentence case, and more. Includes camelCase and snake_case for developers. Free tool.

Case Converter - Change Text Case Online Free

Convert colors between HEX, RGB, HSL, HSV, and CMYK formats. Pick colors visually and copy any format. Free online color conversion tool.

Color Converter - HEX, RGB, HSL, CMYK Conversion

Generate harmonious color palettes for your designs. Explore complementary, analogous, and triadic schemes. Export as CSS, SCSS, or JSON.

Color Palette Generator - Create Beautiful Color Schemes

Design beautiful CSS gradients with live preview. Linear, radial, and conic gradients. Copy CSS code instantly. Free online gradient maker.

CSS Gradient Generator - Create Linear & Radial Gradients

Convert CSV files to JSON arrays and JSON to CSV. Support for custom delimiters, nested data. Free online data converter tool.

CSV to JSON Converter - Convert Data Formats Free

Compare two texts and highlight differences. View line-by-line changes with additions and deletions. Free online text comparison tool.

Diff Checker - Compare Text Differences Online

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text or files. Compare and verify hashes instantly. Free online hash calculator.

Hash Generator - MD5, SHA-1, SHA-256, SHA-512 Online

Encode special characters as HTML entities and decode HTML entities to text. Prevent XSS attacks and display code safely. Free encoding tool.

HTML Encoder & Decoder - Encode HTML Entities

Convert images between PNG, JPG, and WebP formats online. Optimize for web, adjust quality. No upload limits. Free image format converter.

Image Converter - PNG, JPG, WebP Conversion Free

Collection of 30+ free online tools: QR code generator, password generator, JSON formatter, calculators, and more. No signup required.

Free Online Tools & Utilities | Generators, Converters, Calculators

Format, validate, and beautify JSON data. Minify or prettify JSON with custom indentation. Syntax highlighting and error detection. Free tool.

JSON Formatter & Validator - Format JSON Online Free

Decode and inspect JWT tokens securely in your browser. View header, payload, and signature. No data sent to servers. Free JWT parser.

JWT Decoder - Decode JSON Web Tokens Online

Generate and sign JWT tokens with custom payloads. Support for HS256, HS384, HS512 algorithms. Free JWT generator tool.

JWT Encoder - Create JSON Web Tokens Online Free

Analyze keyword density and word frequency in your content. Optimize text for SEO without over-stuffing. Free keyword analysis tool.

Keyword Density Checker - Analyze Content SEO

Create compelling LinkedIn headlines that attract recruiters. Multiple styles: professional, value-based, job seeker. Increase profile views.

LinkedIn Headline Generator - Professional Headlines

Generate lorem ipsum placeholder text for mockups and designs. Choose paragraphs, sentences, or words. Copy with one click. Free tool.