01Websites, web shops and apps · Leiden, NL
Your website.Fixed price.Fixed date.
See it first, then decide. I build a free demo of your new homepage. If you like it, you get a fixed price and a delivery date, in writing.
02Work
My work.
Everything below is real, built and running. Click and see for yourself.
Side projects
Things I build for myself, for my own keyboard, Mac and lights.
Motion design too
Motion that fits your brand.
Short films and animation in the fonts and colours of your own brand, like the films with my work. For your site, your socials or a presentation.
Ask about it
03Services
What I make.
From logo to web shop. What I’m best at: web shops, automating boring work with AI, and getting you found in Google and ChatGPT.
- Website A fast site that turns visitors into customers.
- Web shop A web shop that sells. Custom or Shopify.
- Automation Repetitive work that does itself. You approve everything before it goes out.
- App An app for phone and tablet, from sketch to launch.
- Browser extension A Chrome extension, all the way to approval in the Chrome Web Store.
- Branding One recognisable look, the same everywhere.
- Marketing Ads and pages that stand out and get people to act.
- Motion design Short films and animation in the style of your own brand.
04Process
One message.I handle the rest.
This is how it goes. Tap an example and watch.
- 01
You message or email me
A few lines about your business and what you want. Already have a site? Send the link along.
- 02
You get a free demo
Want a new website? Then I build your homepage within 48 hours, on its own link. It costs nothing and there is no obligation.
- 03
Then a price and a date
One fixed price and one delivery date, in writing. For an app or automation you get those straight away, within one working day.
- 04
I build, you watch it grow
You see it take shape along the way. On the agreed date it goes live.
- Hi Marius! My hair salon needs a new website. Can you do that?
- Sure. I build a free demo of your homepage first, so you see what you get.
- Free? Am I committed to anything?
- No. If you do not like it, you will not hear from me again.
- Your demo is ready. Take your time and look at it on your phone.
- Wow, this is it. What does it cost to finish it?
- Quote.pdfFixed price · live within 1 to 2 weeks
- Agreed!
- I want to sell the cakes from my bakery online, with pickup and delivery.
- Can do. Custom or Shopify, whatever suits you best.
- Tomorrow you have a fixed price and a delivery date, in writing.
- Quote.pdfFixed price · live within 2 to 3 weeks
- Great. When do we start?
- Right after you agree. You see it grow along the way.
- I have an idea for an app for my gym. Members should be able to book classes.
- Love it. I sketch the screens first, so you know exactly what you get.
- Quote.pdfFixed price · done within 3 to 6 weeks
- Clear. Agreed.
- Then we build. On the agreed date it goes live.
- Every week I retype quotes from WhatsApp. Can that go faster?
- Yes. A photo or message from a customer becomes a draft quote from your own price list.
- You approve it before it goes out. No price is made up.
- Quote.pdfFixed price · fixed delivery date
- Sounds good. Let’s do it!
- Can you build a Chrome extension for our team?
- Yes. I have three of my own in the Chrome Web Store, and I handle the approval too.
- Quote.pdfFixed price · done within 3 to 5 weeks
- Agreed, let’s go.
05About
Marius Kerkvliet
I am Marius, a web designer in Leiden, the Netherlands. I design and build everything myself, from the first sketch to the day it goes live.
For others I made, among other things, the site of John Asian Food in Barneveld, which shows by itself whether the kitchen is open, and the one for the Xilent Disco Walk, a charity walk through Leiden.
I also build my own products: AnswerGround, which shows where a business ranks in Google Maps, Knyaw, a free app for learning to read Sgaw Karen, and three extensions in the Chrome Web Store.
I also have experience in Roblox development.
One person, one point of contact. You always talk to me.
Five promises, in writing
Free demo in 48 hours. Fixed price. Fixed date. Pay at launch or per month. One person, from design to launch.
What you do not get from me
Yearly contractA subscription runs for a fixed first three months. After that you cancel any month.A site you do not ownThe site becomes yours. Pay per month and want to stop? Then you take it over for what is still open of the build.Sales callNo call needed and no phone number asked. Your name and email address are enough.Paying blindYou first see the free demo. Pay in one go, and you pay only once your site is live.SurprisesA new site has one fixed price. Small jobs afterwards are billed by the hour, always agreed with you first.
06FAQ
Questions.
Not listed? Ask via the form.
How does the free demo work?
You send me your business name and your current site, or a few lines about what you do. Within 48 hours you get a link to a working demo of your new homepage, with your name, your copy and your colours. It costs nothing and you are not committed to anything. If you like it, you get a fixed price and a delivery date and I build the rest. If you do not, I take it offline and you will not hear from me again.
How do I know the price will not creep up?
Because it is not an estimate. You get one amount in writing before I start, and that is what the invoice says. I do not bill the build by the hour: overruns cost me time, not you money.
How do I know it will not drag on for months?
The delivery date is in the quote, so it is a promise. A website takes one to two weeks, a web shop two to three, an extension three to five, an app three to six. You see the work along the way.
What do you need from me to start?
A few lines about your business and what you want. That is all I need for a price and a date.
What happens after it goes live?
Pay in one go and the site is yours right away. Domain and hosting are in your name, so you are never tied to me. Maintenance is a fixed monthly amount: the first three months are fixed, after that you cancel any month. Small changes are billed by the hour, always agreed first. If you leave, I hand everything over for free.
When do I pay, and what if it goes wrong?
A website or web shop you pay in one of two ways. In one go, only once it is live. Or per month: nothing upfront, the subscription runs for a fixed first three months, and if you stop you take the site over for what is still open of the build. An app, extension or automation you pay in two halves: at the start and at delivery. Fourteen days per invoice, nothing afterwards. If you stop halfway through the build, you pay only for what is finished and keep what is already there.
07Free demo or quote
Let’s buildsomething good.
Tell me what you need. For a new website I first build a free demo of your homepage. For anything else you have a fixed price and a delivery date within one working day. No sales call.

Nice, thanks!
You’ll hear from me within one working day.
- Free demo of your homepage, ready within 48 hours
- One fixed price and one delivery date, in writing
- Reply within one working day, no sales call
- Pay in one go at launch, or per month
Or email: hello@murmweb.dev