DEV Community: Chison She

I Got Tired of Hunting for Free Online Tools. So I Built 1000+ of Them — All Client-Side, Zero Backend.

Chison She — Sat, 11 Jul 2026 03:35:56 +0000

I Got Tired of Hunting for Free Online Tools. So I Built 1000+ of Them — All Client-Side, Zero Backend.

Every time I needed a simple tool — format JSON, resize an image, generate a QR code — I'd open Google, search for a "free online tool," and land on some sketchy site with 47 pop-up ads, a 10MB file size limit, and a $9.99/month "premium" upgrade staring me in the face.

Sound familiar?

I knew there had to be a better way. So I built one. And then another. And... well, 1000+ tools later (1052 to be exact, across 2130+ bilingual pages), here we are.

What started as a weekend project turned into an obsession: a completely free, ad-light, privacy-first toolbox that does everything in your browser. No uploads. No servers. No accounts. No BS.

🚀 The Self-Imposed Constraints

The most interesting part? I gave myself some pretty extreme constraints:

Constraint	Why
100% static HTML/JS	No server, no database, no build step
$0 hosting	GitHub Pages — literally free forever
Works offline	Everything runs client-side, so once loaded, it just works
Bilingual	Every tool has an English + Chinese version
No frameworks	Vanilla HTML, CSS, and JavaScript — no React, no Vue, no build tools
SEO-first	Every page has Schema.org structured data, OG tags, and sitemap integration

Why these constraints? Because I wanted to prove that you can build something genuinely useful without any recurring costs, complex infrastructure, or venture capital. Just pure engineering.

🔧 The Architecture (If You Can Call It That)

The whole thing is beautifully simple:

webtools-cn.github.io/tools-site/
├── index.html          ← Homepage with category filtering
├── en/index.html       ← English homepage
├── sitemap.xml         ← Auto-generated, ~2130 URLs
├── llms.txt            ← AI search optimization
├── [tool-name]/        ← Each tool is a standalone folder
│   └── index.html      ← Self-contained HTML + JS + CSS
└── en/[tool-name]/     ← English version of each tool
    └── index.html

Each tool is a completely standalone HTML file. No build process, no framework, no dependencies (except the occasional CDN-loaded library like html2canvas or jsPDF).

The hard part wasn't building individual tools — it was keeping 900+ pages maintainable:

29 category tags for cross-filtering on the homepage
7 types of Schema.org structured data per page (FAQPage, SoftwareApplication, HowTo, etc.)
Cross-tool recommendations at the bottom of every page
Auto-generated sitemap that gets rebuilt with every batch of new tools

🛠️ What's Inside? (The Tool Categories)

After 900+ tools, patterns emerged. Here's what people actually need:

Category	Example Tools	Count
🔤 Text & Strings	Case converter, text diff, regex tester, slug generator	~120+
🖼️ Image & Design	Image resizer, SVG editor, color picker, QR generator	~100+
🔐 Security & Hash	MD5/SHA generator, password checker, encryption tools	~60+
🌐 Web & URL	URL encoder/decoder, redirect checker, HTTP headers	~80+
💻 Code & Dev	JSON formatter, HTML prettifier, CSS minifier, SQL formatter	~90+
📊 Data & Math	CSV viewer, unit converter, calculator, base converter	~100+
📝 PDF & Office	PDF merger, page extractor, PDF-to-Excel, password protect	~40+
🎨 Design & CSS	Gradient generator, shadow builder, animation CSS generator	~70+
🧪 Random & Fun	Random number generator, UUID generator, color palette	~50+
💰 Business & Finance	Invoice generator, crypto calculator, loan calculator, budget planner	~60+
And more...	Date calculator, time zone converter, cron expression builder	~200+

💡 The Biggest Engineering Challenges

1. Keeping 900+ Pages Consistent

When you have 900+ pages, changing the footer means changing 900+ files. I built a template system that generates individual HTML files from a shared structure. Every new tool automatically inherits:

The same navigation bar
Standardized meta tags
Proper OG tags for social sharing
Schema.org structured data
GA4 event tracking
Feedback button (GitHub Issues)

2. Category Tag Normalization

Early on, I had 50+ poorly-defined category tags. I normalized them down to 29 short codes (e.g., text, image, dev, security). Now the homepage search/filter just works.

3. Bilingual Content Management

Each tool exists in both English and Chinese. The challenge was keeping them in sync. The solution: generating both versions from the same data structure, with Chinese content added manually (translation is still by hand for quality).

4. Schema.org Structured Data

Every tool page has comprehensive Schema.org markup:

SoftwareApplication (for search engines to recognize it as a tool)
WebApplication + Offer (confirming it's free)
FAQPage (3-5 common questions per tool — great for AI search)
HowTo (step-by-step usage instructions)

This turned out to be one of the best investments — structured data helps in both traditional SEO and AI-generated search results.

📈 Growth Strategy (So Far)

Traffic is currently... basically zero. 😅 Here's the plan:

Phase	Tactic	Status
1	SEO fundamentals — sitemap, Schema.org, GSC, IndexNow	✅ Done
2	GEO (Generative Engine Optimization) — FAQ Schema, llms.txt, AI-friendly content	✅ Done
3	Reddit launch (July 22) — r/SideProject story post	🔜 Next week
4	Dev.to article — this post!	🔜 Publishing soon
5	Hacker News — community participation	🔜 In progress
6	Chrome Web Store — 4 extensions ready to publish	🔜 Soon
7	Content marketing — technical blog posts, tutorials	📅 July/Aug

The biggest lesson so far? Building the product was 20% of the work. Getting it found is the other 80%.

🎯 What I Learned That Might Help You

1. Client-side tools are genuinely underrated

Most people assume you need a server for anything useful. Not true. Modern browsers can do JSON parsing, image processing, PDF manipulation, QR generation, text analysis, and even SVG rendering — all in JavaScript.

The only limitations are:

Large file processing (browsers have memory limits)
Server-side PDF manipulation (merging pages needs a backend)
Anything requiring file storage

For everything else, client-side is faster, cheaper, and more private.

2. SEO for tool websites is different from content sites

Tools pages don't get "read" — they get "used." The key metrics are:

Schema markup coverage — every page needs SoftwareApplication + FAQPage + HowTo
Page speed — tools need to load fast (<2s) since users want quick results
Freshness signals — dateModified on every page matters for Google
AI citation readiness — FAQ schema and llms.txt are becoming critical for AI search

3. GitHub Pages is surprisingly capable

I've hit exactly zero limits with GitHub Pages for this kind of project. 1000+ pages, 50MB+ total, zero performance issues. The only drawback: no server-side processing (obviously), and China access is spotty (GFW).

4. Don't wait for "perfect" to launch

I started with 10 tools. Then 50. Then 200. Now 1000+. Each batch taught me something that made the next batch better. The first tools were ugly, slow, and had zero schema markup. Now every tool ships with full SEO optimization.

🔗 Where to Find It

The site is live at: webtools-cn.github.io/tools-site/

The code is on GitHub: github.com/webtools-cn/tools-site

(Yep, it's all open source — PRs welcome! 🤝)

💬 Let's Discuss

I'd love to hear from other folks who've built similar projects:

What's your experience with client-side-only tools?
Any tips for getting the first 1000 daily visitors?
What tools would you add to this collection?

If you find a tool useful, star the repo or share it with a friend who might need it. Every bit helps when you're starting from zero traffic! 🚀

P.S. The entire site is bilingual (English + Chinese). If you're learning Chinese or want to practice your language skills while getting work done, check out the Chinese versions!

I Built 750+ Free Developer Tools Using Pure Frontend — No Server, No Database, No Excuses

Chison She — Fri, 10 Jul 2026 03:15:03 +0000

I Built 750+ Free Developer Tools Using Pure Frontend

No servers. No databases. No backend code. Just HTML, CSS, and JavaScript — 750+ tools, all running in your browser. Every single one is free, no signup required.

The "Why"

I kept bookmarking the same online tools: JSON formatters, regex testers, UUID generators, hashing tools. Each one was on a different site, each with different ads, different layouts, different limitations.

So I built my own collection. And then I kept adding to it.

The Architecture

Zero backend. Every tool is pure frontend:

HTML + CSS + vanilla JavaScript
No API calls to any server
No database, no authentication
Works fully offline (service workers ready)
Hosted on GitHub Pages — completely free

How 750+ tools work

Each tool follows the same pattern:

A form input (text, file upload, buttons)
JavaScript processing logic (no server round-trip)
Output display (copy button, download, preview)

The AI generates the implementation logic from descriptions, and I review/quality-check each one before adding it to the collection.

What's Inside

Category	Examples
Text	Case converter, word counter, diff checker, text sorter
JSON	Formatter, validator, minifier, path finder
Hash	MD5, SHA-1, SHA-256, SHA-512, bcrypt
UUID	v4, v5, v7 generators, bulk generator
Color	Picker, converter, palette generator, contrast checker
Math	Calculator, unit converter, base converter
Security	Password generator, entropy checker, OTP generator
Image	Base64 encoder, SVG optimizer, data URL generator
Code	Syntax highlighter, HTML entities, URL encoder/decoder
More	Cron expression builder, lorem ipsum, QR code generator

The Tech Stack

GitHub Pages for hosting
Vanilla JS (no frameworks, no build tools)
Plain CSS (no Tailwind, no Bootstrap)
AI-assisted development (generate, then verify)
Bilingual from day one (English + Chinese for every tool)

Check It Out

WebTools → webtools-cn.github.io/tools-site/

All 750+ tools are free, immediate, and require no account. Just open the page and use it.

What I Learned Building 750+ Tools

Pure frontend handles 90% of common tool needs. Most "I need a quick tool" moments don't require a server.
AI + human review beats manual coding for boilerplate-heavy projects. Let the AI write the first draft, then verify every edge case.
Bilingual doubles your reach. Adding Chinese meant building a translation system upfront, but the ROI is massive.
GitHub Pages + vanilla HTML is the cheapest production deployment on earth. Zero dollars. Zero maintenance.
Quality gates matter more than quantity. Each tool goes through automated testing and manual review before going live.

What tools do you use daily? Drop your suggestions in the comments — I might build them next.

Built with ❤️ using AI + vanilla JS

I Built a Free Website with 380+ Browser-Based Developer Tools

Chison She — Wed, 08 Jul 2026 14:42:45 +0000

Over the past few weeks, I built a collection of free, browser-based developer tools. Everything runs client-side with zero backend - your data never leaves your browser.

What is included (380+ tools):

Text tools: word counter, case converter, diff checker, slug generator
Encoding: Base64, URL encode/decode, HTML entities
Crypto: hash generators (MD5, SHA-256, SHA-512), HMAC generator
Generators: passwords, UUIDs, QR codes, lorem ipsum
Formatters: JSON, XML, CSS, SQL, YAML
Network: URL parser, IP lookup, HTTP headers
Converters: color formats, number bases, timestamps, units
CSS tools: gradient generators, flexbox playground, border radius
HTML tools: button generator, iframe generator, meta tag generator
And many more...

Key features:

No signup or login required
No data sent to any server - everything runs in your browser
Works offline once loaded
Supports English and Chinese
Built with vanilla HTML/JS, no frameworks

Tech stack:

Pure frontend - HTML + vanilla JavaScript. Hosted on GitHub Pages. Zero backend, zero dependencies, zero tracking. Every tool is a standalone page that works independently.

Link: https://webtools-cn.github.io/tools-site/

I would love to hear what tools you would find useful or what is missing. Always adding new ones based on feedback!

If you find this useful, consider sharing it with other developers who might benefit from free, privacy-respecting tools.