Aarav Mehta
Developer Tools EditorAarav writes practical guides for developers and technical users, focusing on browser-based utilities, data formatting, API workflows, security basics, and privacy-first developer tools.
About Aarav Mehta
Aarav Mehta is a software developer and technical writer with a strong focus on browser-based developer utilities, API workflows, and data processing tools. With several years of hands-on experience building web applications, he brings a practical, code-first perspective to every guide he writes — cutting through complexity to explain tools, formats, and techniques in plain, usable terms.
His work at FluxToolkit covers the full spectrum of developer productivity: from understanding JSON, XML, and YAML data formats, to encoding schemes like Base64 and UUID generation, to security-focused topics like cryptographic hashing and JWT token decoding. Aarav is especially focused on privacy-first tooling — tools that run entirely in the browser without sending data to a server, making them safe for handling sensitive credentials, API keys, and proprietary code.
Before joining FluxToolkit, Aarav worked on backend API integrations and developer tooling automation. He believes that well-documented developer tools reduce errors, save debugging time, and help both beginners and experienced engineers move faster. Every guide he writes is structured around real-world use cases, not theoretical examples.
Editorial Approach
Aarav structures every guide around real developer scenarios — starting with the problem, showing the tool in action, and explaining the technical details in plain language. Each article is reviewed for technical accuracy before publication.
Topics Covered by Aarav
Data Formats & Conversion
Practical guides on JSON, XML, YAML, CSV, and converting between formats for APIs, configs, and data pipelines.
Encoding & Decoding
Clear explanations of Base64, URL encoding, HTML entities, and how encoding affects web performance and security.
Developer Security Tools
Guides on JWT decoding, cryptographic hashing (SHA-256, SHA-512, bcrypt), UUID generation, and safe password practices.
Code Utilities
Regex testing, SQL formatting, Markdown/HTML conversion, CSS minification, and other browser-based code productivity tools.
All Articles by Aarav Mehta
27 guidesImage to Base64: Embed Images Directly in CSS & HTML (Free, No Login)
Base64-encoded images eliminate HTTP requests by embedding image data directly in CSS or HTML. Here's when to use this technique — and when to avoid it.
CSS Color Formats Explained: HEX, RGB, HSL, and When to Use Each
CSS supports HEX, RGB, HSL, HWB, and the modern OKLCH. Each has real trade-offs. Here's when to use each format and how to convert between them.
Markdown for Writers and Developers: A Practical Guide to Web Writing and HTML Migrations
Learn how Markdown works, why it's the preferred writing format for developers and bloggers, and how to cleanly migrate messy legacy HTML into structured Markdown.
HTTP Headers Explained: What Your Browser Really Sends (Free Checker)
Every HTTP request and response carries invisible metadata in its headers — controlling caching, security, content type, and compression. Here's how to read, check, and improve them.
How to Create a QR Code for Free — And What They're Actually Good For
QR codes are one of the most versatile tools for connecting the physical world to the digital. Here's how to create one for free — and how to use them effectively.
SHA-512 vs SHA-256: When You Need More Cryptographic Bits
SHA-256 and SHA-512 both come from the SHA-2 family — but they differ in output length, performance on different hardware, and resistance to certain attack vectors. Here's when each one is the right choice.
How to Minify CSS, HTML, and JavaScript to Speed Up Your Website
Minification is one of the quickest wins for website performance. Here's what it does, how much it actually helps, and how to minify CSS, HTML, and JavaScript without breaking anything.
JSON Diff Checker: How to Compare Two JSON Objects (Free, No Login)
Spotting the difference between two JSON responses, config files, or API payloads by eye is error-prone and slow. Here's how JSON diff checkers work and the best strategies for comparing structured data.
Strong Passwords & Cryptographic Hashes: How to Secure Your Credentials the Right Way
Understand what makes a password truly secure, how hashing algorithms like MD5 and SHA-256 protect your data, and why running these tools locally keeps you safe.
SHA-256 vs MD5 vs bcrypt: Which Hashing Algorithm Should You Use?
Not all hashing algorithms are equal. MD5 is broken for passwords. SHA-256 is fast but wrong for user credentials. bcrypt is slow by design — and that's the point.
bcrypt Password Hashing: Why It's Better Than MD5 & SHA-256 (Free Tool)
bcrypt is the gold standard for storing passwords securely. Here's why MD5 and SHA-256 are wrong for passwords, how bcrypt's cost factor works, and how to implement it correctly.
What is a UUID and How Do You Generate One? A Developer's Guide
UUIDs are the backbone of distributed system IDs, database keys, and API tokens. Here's what they are, how the different versions work, and how to generate them.
Unix Timestamp Converter: What Epoch Time Is and How Developers Use It
Unix timestamps appear in server logs, database records, JWT tokens, and API responses. Here's what epoch time means and how to convert it to a readable date.
Markdown to HTML Converter: How It Works & When to Use It (Free, No Login)
Markdown is fast to write; HTML is what browsers render. Here's how Markdown-to-HTML conversion works, what each Markdown element becomes in HTML, and when you need this conversion.
HTML to Markdown: Cleaning Up Web Content for Writers (Free, No Login)
Raw HTML is unreadable for writers and editors. Converting HTML to Markdown strips away the noise and produces clean, portable text that works everywhere from GitHub to Ghost to Notion.
SQL Formatting: Why It Matters and How to Clean Up Messy Queries Instantly
Messy SQL is hard to read, hard to debug, and error-prone. Here's why consistent formatting matters and how to clean up queries instantly.
Regex for Beginners: How Regular Expressions Actually Work (With Real Examples)
Regular expressions look intimidating at first. But once you understand the core patterns, regex becomes one of the most powerful tools in any developer's toolkit.
A Complete Guide to Decoding JWT Tokens Locally and Safely
Learn how JSON Web Tokens work, how to safely decode them in your browser, and why local decoding is the safest way to protect sensitive credentials under GDPR and CCPA.
Cron Jobs Explained: How to Build and Schedule Automated Tasks Without Breaking Things
Cron expressions look confusing at first — but once you understand the 5-field structure, scheduling automated tasks becomes straightforward. Here's a complete beginner-to-intermediate guide.
YAML vs JSON: When to Use Each and How to Convert Between Them
YAML and JSON are both used for config files and data serialization — but they have very different strengths. Here's when to use each and how to convert between them.
JSON vs XML vs YAML vs CSV: Which Data Format Should You Use?
JSON, XML, YAML, and CSV all store structured data but in fundamentally different ways. Here's when to use each — and when not to.
JSON Formatter and Validator: How to Read, Format, and Debug JSON Instantly
Minified JSON from an API response is nearly impossible to read. Here's how to format, validate, and debug JSON — and what the common error messages actually mean.
Difference Between JSON and XML: Free No Login 2026
Learn the difference between JSON and XML, compare formats, and format files free with FluxToolkit. No sign up required.
URL Encoding and Decoding Explained: A Developer's Practical Guide
URLs can only contain certain characters. URL encoding converts everything else into a safe format. Here's how it works and when you actually need it.
Number Base Converter: Binary, Decimal, Hex, and Octal Explained
Binary, decimal, hexadecimal, octal — different ways to write the same number. Here's how each base works and how to convert between them.
HTML Entities: What They Are and How to Encode Special Characters Safely
Special characters like <, >, and & have specific meanings in HTML. If you include them in content without encoding, you'll break your page — or open an XSS vulnerability.
Base64 Encode and Decode: A Complete Developer's Guide
Base64 is everywhere in web development — from embedding images in CSS to reading API responses. This guide explains how it works and when to use it.