01🔒
Privacy is the default
Everything runs on your device. No accounts, no analytics, no data ever leaves your browser. Not because it's trendy — because it's right.
👋 hi, we're monolab — a tiny lab with a big mission
Making the internet humane again.
We build small, joyful tools that clean up the web — blocking the junk, the traps and the noise, so you can browse in peace. Everything runs on your device. Nothing follows you around.
★ 5.0 on Chrome · trusted by 3,000+ people
no dark patterns ✳privacy first ✳calm browsing ✳zero trackers ✳open source ✳humane by design ✳100% local ✳made with care ✳
made with care ✳100% local ✳humane by design ✳open source ✳zero trackers ✳calm browsing ✳privacy first ✳no dark patterns ✳
the manifesto ✍️
The internet used to be a playground. Somewhere along the way, it became a machine for stealing your attention. We're here to give it back.
02🌿
Calm over clicks
No dark patterns, no guilt-trip buttons, no engagement traps. The web should feel like a park bench, not a slot machine.
03🧰
Tools, not traps
Good software serves you and then gets out of the way. Our tools are small, focused and honest about what they do.
fresh from the lab 🧪
Tools that fight for you
Every monolab tool follows the same recipe: install it, forget it, and enjoy a web that behaves itself.
live
BlockNSFW
Full details →Porn & adult content blocker
Stops adult websites before they even load. Multilingual detection, on-device AI that scans text and images, and SafeSearch enforcement — all without a single byte leaving your browser.
- On-device AI detection
- SafeSearch enforcement
- Multilingual filtering
- Optional DNS protection
3,000+ users★ 4.3 Firefox★ 5.0 Chrome
live
Sieve
Full details →Content filter & site blocker
A clean-internet suite: hides toxic comments, masks profanity, neutralizes dark patterns, auto-rejects cookie banners and puts a friendly stop to doomscrolling. 100% local and open source.
- Dark-pattern neutralizer
- Toxic comment auto-collapse
- Doomscroll stopper
- Cookie auto-reject
- Guardian Lock (PIN)
Just launchedMIT open source
BlockNSFW for Android
coming soon ✨The humane web is going beyond the browser. We're cooking up an Android app to bring monolab's protection to your whole phone. Stay tuned!
Take a peek →loved by humans 💛
Don't just take our word for it
Thousands of people use monolab tools every day to reclaim a calmer, kinder web — here's what a few of them say.
0+
happy humans
★ 0.0
on Chrome
★ 0.0
on Firefox
0
trackers, ever
★★★★★
“This one is the best. Not much that comes through. In Orion browser you can get around some porn blockers and still load the page, but you can't get around this one. Works very well.”
Jacco Pippel
Chrome Web Store
★★★★★
“This is the best, hands down, NSFW blocker I have used. Great job man.”
goxy701
Firefox Add-ons
★★★★★
“Stable, lightweight, and reliable.”
Anuran Roy
Chrome Web Store
★★★★★
“Just wanted to say, this is extremely helpful. Keep up the good work, dev! Thank you so much, and God bless!!!”
RagePhoenix7
Firefox Add-ons
★★★★★
“Very useful tool if you want to stay away from adult content online. Highly recommended.”
Quang Phan
Chrome Web Store
★★★★★
“Works well on most sites, worked to fix my addiction. TYSM Dev <3”
Firefox user
Firefox Add-ons
★★★★★
“Happy I found this. Solid work!”
Oliver K
Chrome Web Store
★★★★★
“The best extension.”
Mark
Firefox Add-ons
★★★★★
“Nice a cool extension. Simple to use.”
John Lee
Chrome Web Store
open source · on GitHub 🛠️
A side project for fellow devs
Away from the extensions, I keep one open-source tool for the people who build the web. A different track — same care for a healthier internet.
SEO tooling107 stars
SEOCORE
Enterprise-grade SEO crawler, rule engine & link-graph analyzer
A multi-threaded crawler and audit platform built in TypeScript — structured-data validation, PageRank-style authority scoring, Core Web Vitals, AI/LLM crawler readiness and snapshot diffing for CI/CD. Deep site-health audits, at scale.
- Multi-threaded crawler
- Structured-data audit
- Link graph · PageRank
- Core Web Vitals
- AI-crawler readiness
- CI/CD snapshot diffs
TypeScript·Node 20·Nx·Playwright·Cheerio·Zod·Vitest
seocore — audit
$ seocore audit monolab.dev
› crawled pages128
› structured datavalid ✓
› AI crawlersallowed ✓
› images missing alt3 ⚠
site health92 / 100
behind the lab 🔬
Hi! I'm Alfon — the human behind monolab.
monolab started with a simple frustration: the web kept getting louder, pushier and creepier — and nobody seemed to be building for the people actually using it. So I started building small tools that push back. One extension at a time.
Everything monolab ships is local-first, tracker-free and built to respect your attention. No growth hacks, no data harvesting — just honest software with a smile.
🧑💻 indie developer🛡️ privacy nerd📱 now building: Android app
meet Lumo 🔦