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Celerart

Move your old HTML site to a CMS you can edit

The site still works, but nobody can change it. Whether it was hand-coded or built in Dreamweaver, Muse, iWeb or FrontPage, we rebuild it in Astro or Next.js with Sanity or Payload: the content and URLs kept, the pages fit for phones, and an editor your team can use.

Yegparian PLLC homepage: "Trial counsel for high-stakes disputes" over a black-and-white building facadeYegparian PLLC (opens in a new tab)
Yegparian PLLC:WordPressNext.js + Payload

Signs your old site needs a new home

Plenty of hand-built sites have run for years without trouble. These are the moments owners tell us it stopped being enough.

  • Nobody can edit it

    Changing a phone number means opening HTML files, or finding the one computer that still has the right software and the FTP password.

  • The person who built it is gone

    The developer, agency or relative who made the site moved on, and the files, logins and hosting details went with them.

  • It is hard to use on a phone

    Fixed-width pages and table layouts make visitors pinch and zoom. Google indexes the mobile version of a site, so this costs you in search too.

  • The tool behind it is no longer made

    Adobe ended Muse support in 2020, and iWeb and FrontPage are long gone. The software that built your site gets no updates.

  • Security is an unknown

    An old contact form script, an expired certificate or an outdated PHP version can sit unnoticed for years until something breaks or gets abused.

What happens to the old parts

Pick what your site has today. Each part is rebuilt into the new site, moved to a service you choose, or turns out not to be needed.

  • FTP uploads to change a pageEditing in Sanity or PayloadText, images and pages are edited in the browser with live preview. No files to upload and no software to install.
  • Contact form scriptA form built into the siteValidated on the server, filtered for spam and sent to your inbox, CRM or Slack, instead of an old mail script on the host.
  • Table layouts and fixed widthsResponsive pagesEvery template is rebuilt to work on phones, tablets and large screens, keeping the content and the feel of the original.
  • Shared hosting and cPanelHosting on a global networkThe new site is served from a CDN with HTTPS and automatic deploys. The old hosting can be cancelled after launch.
Old parts left to maintain4 → 0

What changes when you leave a hand-built site

Astro and Next.js decide how pages are built. Sanity and Payload are where your team edits. We recommend a pair after the audit.

What changes when you leave a hand-built site
FeatureAstro + SanityNext.js + PayloadOld HTML sites
Editing
Edit text and images without code
Live preview while editingOnly in the desktop tool
Several editors with their own logins
Phones and security
Pages that fit any screenDepends how it was built
HTTPS and maintained dependenciesDepends on the host
Forms protected from spamDepends on the script
SEO
Every existing URL kept or redirected
Sitemap and structured data generatedWritten by hand
Titles and descriptions edited next to contentIn the HTML

Sites we've already moved

Different stacks for different jobs: a law firm on Next.js and Payload, a residential launch and our own studio on Astro and Sanity.

  • Yegparian PLLC

    WordPressNext.js + Payload

    An Austin trial litigation firm. Practice areas, matters and insights are Payload collections, and every page is pre-rendered and served from the edge.

    yegparianpllc.com (opens in a new tab)
  • 25 Cuba

    WordPressAstro + Sanity

    A new residential address in Canary Wharf. Apartments, amenities and galleries are edited in Sanity, and the site ships as static Astro pages.

    25cuba.com (opens in a new tab)
  • Celerart

    WebflowAstro + Sanity

    Our own studio site. Every one of the 164 old URLs was carried over or redirected, and all content is now edited in Sanity.

    celerart.com (opens in a new tab)

How we move an old HTML site

Your current site stays live until the new one is ready. The switch is a DNS change, not a weekend of downtime.

  1. Audit

    We crawl every URL, list every page, form, file and embed, and export your rankings. If the source files are lost, the live site is enough.

  2. Content model

    Pages, news, team members and downloads become a clean schema in Sanity or Payload, shaped around how your team will edit.

  3. Content import

    Text, images and documents are taken from the files or a crawl of the live site, cleaned of old markup and checked by hand.

  4. Front end

    We rebuild the design in Astro or Next.js: the same look made to work on phones, or a refresh if one is due.

  5. Redirects and launch

    Every old URL, including .html and .php addresses, keeps its path or gets a permanent redirect. Metadata and sitemaps are checked before the DNS switch.

  6. Handover

    Your team gets a walkthrough of the new editor and their own logins. Then the old hosting and FTP accounts can be closed.

Happy clients

We always deliver. Proven by our work. Trusted by people.

Excellent reviews

"Great Agency to work with! Always deliver on time with perfect results. Highly recommended!"

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Shai Zrihan
CEO, Site123

"I am impressed by the responsiveness and team spirit."

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Ruslan Valiyev
CEO, Smidige

"I was blown away by their expertise in branding and product design."

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Christian Hyka
Managing Partner, Survalyzer

"Hands down one of the BEST designers i have ever worked with. Will absolutely keep using them!!"

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Vinny Troia
CEO, Night Lion Security

"celeart is one of the best website development companies I've ever met in my 10-plus year career."

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Wilson Dong
Marketing Director, Gausium

"I was blown away by their expertise in branding and product design."

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Keywan Hassani-Pak
Head of Bioinformatics, KnetMiner

"The best in the business."

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CEO, Setai

"Celeart was very professional every step of the way."

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Artem
CEO, Mriya

"Had a great time working with Celeart. Vadym and his team were very competent and responsive. I look forward to working on many more projects."

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CEO, HasanovCapital

"Fast, good & expensive!"

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Rudolphe Aben
CEO, Nextimmo.lu

The comprehensive redesign of our webpage has significantly propelled us toward achieving our business objectives.

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Dee Dee Fasquel
CEO, Luckydog & InstinctIQ

Celeart was super easy to work with. I am very satisfied with the quality of their work and professionalism.

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Ryan Shafer
CEO, WixFix

It was all executed perfectly and celerart. did exceptional work!

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Infinitopes

High quality standards, extremely flexible to our requirements. Our conversions increased, as well as time spent on site.

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Denis Baldoni
Marketing Manager, Elite Robots

We were impressed with Celerart's responsive team and creative thinking. Our website conversions improved.

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TitanML

Our customers and investors loved the website and brand. We’ve also found cold outreach to be 25% more effective than before.

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Charles Brecque
CEO, TextMine

Very professional, easy to communicate with, they respond fast, and are always very productive in their approach. Celerart was great to work with.

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Chefslist

Flexible, attentive, communicative. Website launched on time (which was quite impressive, given the number of iterations).

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Meliora Therapeutics

We couldn’t have asked for a better partner to bring our website vision to life.

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Nash
Marketing Coordinator, MDP

Celerart managed the project very well and delivered everything on time.

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Ergosoft

Celerart was brilliant! They delivered a website that reflected the new brand's efforts and culture, performed well, and converted leads to demos.

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Skye Aspden
Marketing Lead, Findest

Celerart was responsive and worked well to respond to requests, reviews, and changes.

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Neil Charney
Chief Marketing Officer, TurinTech

Celerart had an incredible sense of design. Customers were impressed with the website redesign. Responsive, timely, and attentive to feedback.

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Allen Elks
Chief Software Architect, IVC

We are 100% happy with the project. The team was flexible, a pleasure to work with, and delivered the project on time and within budget, exceeding expectations.

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Michel Waegli
Head of Business Unit Industrial Applications, Livinguard

Celerart stayed focused and committed to doing good work. The team's dedication to the project and commitment to producing top-notch work have stood out.

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Kevin Hughes
Chief Information Officer, aSharex

Questions about moving an old site

  • Yes. We can work from a crawl of the live site, which gives us every page, image and document that visitors can reach. Source files help, but they are not required.

  • Not if the move is planned. Every URL keeps its address or gets a permanent one-hop redirect, including old .html and .php pages, and titles and descriptions are carried over. A site that works on phones usually helps rather than hurts.

  • Yes. We can rebuild the design as it is and make it work on phones, or use the move to refresh it. You see the new templates next to the old pages before anything goes live.

  • Not much. Whatever made the pages, the result is HTML we can read. We take the content and structure from it, leave the generated code behind and rebuild the pages properly.

  • Both are valid choices, and the audit will say so if one suits you better. We build with Astro or Next.js and a headless CMS because there are no plugins to patch, pages are fast by default, and the code and content are yours to take anywhere.

  • No. Editors change text, images and pages in the browser with live preview. Hosting updates and deploys run automatically, and we can support the site after launch if you want.

  • It depends on the number of pages, forms and documents. After the audit you get a fixed scope and timeline, and the old site stays live until launch day.

Get Started

Let's give your old site an editor

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