DEV Community: WuXin

I got mass bulk banned because I wasn't able to share privacy-first dev tool alternatives so I built my own 10 free browser tools

WuXin — Fri, 14 Aug 2026 12:08:29 +0000

The Problem That Annoyed Me Into Building Something

I spend most of my day debugging JSON payloads, generating hashes for API integrations, and converting timestamps. Like most developers, I'd Google "json formatter online" and click the first result.

And every single time, I'd land on a site that:

Took 5 seconds to load because of 47 ad scripts
Had a cookie consent banner covering half the screen
Was probably logging my API responses on their server

That last one always bothered me. I work with auth tokens, internal API responses, and customer data. Pasting that into some random website felt... wrong.

So over the past few months, I built SnipTools — a collection of 10 developer utilities that run 100% inside your browser. No server uploads. No accounts. No ads.

What I Built

Here's the full toolkit:

Data & Formatting

JSON Formatter & Validator — Beautify, minify, and validate JSON with line-by-line error detection. Configurable 2/4/tab indentation.

Security & Cryptography

Hash Generator — MD5, SHA-1, SHA-256, SHA-512 computed simultaneously. Supports HMAC with secret keys and file checksums up to 100MB. All powered by the native Web Crypto API.

Encoding & Decoding

Base64 Encode & Decode — Handles text, files, and images. Full UTF-8 support (yes, emojis work). URL-safe Base64 toggle included.
URL Encode & Decode — Three encoding modes: URI Component, Full URL, and RFC 3986 Strict.

Generators

UUID Generator — UUID v4 (random) and the newer UUID v7 (time-ordered, great for database indexing). Bulk generate up to 500 at once.
Lorem Ipsum Generator — Generate by paragraphs, words, sentences, or exact byte count.

Converters

Unix Timestamp Converter — Live ticking epoch clock with auto-detection of seconds vs milliseconds. Quick presets for common dates.

Text & Design

Word & Character Counter — Reading time, speaking time, keyword density analysis. Great for blog posts and SEO content.
Color Picker & Converter — HEX/RGB/HSL/HSV with live two-way sync and built-in WCAG AA/AAA contrast checker.

Utility

Online Clipboard — Share text between devices using a 6-digit code. Generates a QR code so you can scan it with your phone. Uses BroadcastChannel API for real-time multi-tab sync.

The "Why Client-Side" Decision

This was non-negotiable for me. Here's why:

When you paste a JWT token into most online decoders, that token travels to their server. Even if they promise they don't log it — you have no way to verify that.

With SnipTools, your data never leaves your browser. The hashing uses crypto.subtle (Web Crypto API). The Base64 encoding uses TextEncoder. The clipboard sharing uses localStorage and BroadcastChannel. There is literally no server endpoint that receives your data.

You can verify this yourself — open DevTools, go to the Network tab, paste sensitive data into any tool, and watch. Zero outbound requests.

What I Learned

The Web Crypto API is incredibly powerful — You can compute SHA-256 hashes, generate HMAC signatures, and create cryptographically secure random UUIDs without importing a single library.
Astro is perfect for tool sites — Each tool page is its own island. No shared client-side state means zero unnecessary JavaScript.
People care about privacy more than features — The #1 feedback I've gotten is "finally, a tool site I can trust with my data."

Try It Out

The whole thing is live at sniptoolkit.com.

If you have feedback, feature requests, or find a bug — I'd genuinely love to hear about it in the comments. I'm actively building new tools (a JWT decoder is next on the list).

If you found this useful, a ❤️ would really help other developers discover these tools. Thanks for reading!

Stop emailing yourself code snippets (We built a better way)

WuXin — Mon, 10 Aug 2026 05:39:38 +0000

Let me know if this workflow sounds familiar:
You are working on your desktop, and you need to test a specific API payload, JSON object, or long URL on your mobile device. Or maybe you found the perfect Stack Overflow answer on your phone while commuting, and you need to get it onto your laptop right now.
How do you transfer it?
If you are like 90% of developers I know, you probably do one of three things:

Send a Slack, Discord, or WhatsApp message to a "Note to self" group where you are the only member.
Open Gmail, start a new draft, paste the code, and open it on your phone.
Open Google Keep, Notion, or Evernote, paste it, wait for the cloud sync, and copy it on the other device. This works. But it’s incredibly tedious, it clutters up your chat history, and honestly? It's fundamentally insecure. If you are moving API keys, JWT tokens, or production database credentials through an email draft, you are permanently saving highly sensitive data on a third-party server. We got incredibly tired of this workflow, so we decided to build a better way.

Enter the Ephemeral Online Clipboard

My team and I built SnipToolkit's Online Clipboard — a completely free, frictionless, and secure way to share code snippets across devices.

How it works:

It is ridiculously simple. There are no accounts, no logins, and no apps to install.

You go to the site on Device A and paste your code snippet, JSON, or text.
The app instantly generates a temporary 6-digit code (and a large QR code).
You open the site on Device B, type those 6 digits, and your text is instantly there. That's it.

Client-Side Processing: This is the most important part. Unlike other online tools that upload your data to a central database, our tools process data locally. The clipboard mechanism uses secure, ephemeral transfers.

A Swiss-Army Knife for Developers

Once we built the clipboard, we realized we needed a secure place for all our other daily utilities. So we expanded the project into a full suite.
If you ever need to:

Format and validate massive JSON files
Decode Base64 strings
Generate UUIDs (v4 & v7)
Convert Unix Timestamps
Generate cryptographic hashes (MD5, SHA-256) You can do it all at SnipToolkit.com. Every single tool is 100% free, has zero ads, and processes data entirely client-side so your sensitive data never leaves your browser memory.

We'd love your feedback!

We are a small team of developers building tools for other developers. If you try out the Online Clipboard, let us know what you think in the comments below!
What is the most annoying part of your daily dev workflow? Maybe we can build a tool to fix it next.

Stop emailing yourself code snippets (We built a better way)

WuXin — Sun, 02 Aug 2026 05:38:51 +0000

Let me know if this sounds familiar:

You find a perfect stack overflow answer on your phone while commuting. Or you have a 30-line JSON payload on your laptop that you desperately need to test on your mobile device.

How do you get the code from Device A to Device B?

If you are like most developers, you probably do one of these:

Email it to yourself (and mess up the formatting).
Send it to yourself on WhatsApp/Slack (and ruin the indentation).
Paste it into a random online pastebin (and worry about who is logging your data).

As a team of 2nd-year CS undergrads, we were doing this constantly. It was annoying, slow, and terrible for privacy. So, we decided to build a better solution.

Enter: The 100% Client-Side Online Clipboard

We built SnipToolkit's Online Clipboard.

It is a completely free, ad-free utility designed specifically for developers who need to move text, code snippets, or JSON between devices instantly.

Why we built it differently:

Most "online clipboards" rely on heavy backend databases. When you paste your code, it gets saved to a server somewhere. If you are pasting sensitive API keys or proprietary code, that is a massive security risk.

We wanted something safer. Here is what makes our approach different:

100% Client-Side: The tool runs entirely in your browser. We have zero backend databases. We do not (and technically cannot) log or read your snippets.
Instant Tab Sync: If you have multiple tabs open on the same device, we use the BroadcastChannel API to instantly sync your clipboard across all tabs in real-time. No refresh needed.
Mobile-to-Desktop: You can generate a unique 6-digit room code to grab your snippet on your phone instantly.
Code Formatting built-in: It preserves your spaces, tabs, and syntax formatting perfectly.

The Tech Stack

Because we are students obsessed with performance, we built the entire SnipToolkit suite using Astro and deployed it on the Cloudflare Edge network.

The result? The site has a 100/100 Lighthouse performance score and loads almost instantly anywhere in the world.

Try it out!

If you ever find yourself needing to quickly transfer a code block, give it a try:
👉 Try the Online Clipboard here

This is just one of several developer tools we are building for the suite (we also have a JSON formatter, Base64 encoder, and UUID generator).

We would absolutely love to hear your feedback in the comments! Are there any features you wish your current clipboard had? Let us know!

Building SnipTools: A Client-Side, Privacy-Focused Developer Utility Suite

WuXin — Tue, 28 Jul 2026 18:02:57 +0000

Hello community,

We are Perception, a team of five second-year computer science students. Over the past few months, we noticed a recurring issue in our daily workflow: many online developer utilities are burdened by intrusive advertisements, slow server roundtrips, or unclear data privacy practices when processing sensitive payloads like JSON, Base64 strings, or hash signatures.

To address this, we developed SnipTools, a web-based utility platform designed to execute all operations entirely within the client's browser.

Core Architectural Principles:

Client-Side Data Integrity: Hashing, encoding, timestamp parsing, and JSON validation run in browser memory. No payload data is transmitted to or stored on an external application server.
Keyboard-Driven Interface: Includes a command palette accessible via Control or Command K, allowing users to navigate between tools without breaking typing context.
P2P Cross-Device Transfer: Our Online Clipboard module uses lightweight ephemeral relays and compressed URL payloads to allow code snippet transfers across desktop and mobile devices without requiring user authentication or persistent accounts.

Initial Release Suite:

Our initial deployment includes ten essential utilities:

JSON Formatter and Validator
Base64 Encoder and Decoder
Cryptographic Hash Generator (MD5, SHA-1, SHA-256, SHA-512, HMAC)
Time-Sorted UUID Generator (v4 and v7)
Unix Timestamp and ISO Date Converter
URL Percent-Encoder and Decoder
Real-Time Word and Character Analyzer
Multi-Format Color Space Converter (HEX, RGB, HSL, HSV, CMYK)
Lorem Ipsum Generator
Ephemeral Online Clipboard

Long-Term Roadmap:

This initial suite represents the foundation of our project. Our objective is to systematically build SnipTools into a comprehensive, multi-category utility hub. We are actively researching progressive web application (PWA) standards to make the entire toolkit fully functional as an offline desktop utility.

We welcome feedback, technical reviews, and bug reports from the developer community. You can reach our team directly at perceptionx00@gmail.com or explore the platform at https://sniptoolkit.com.

Thank you for your time.