Isomer
What it is
Isomer is a free website builder for Singapore government agencies and public healthcare institutions to create static websites without coding. Public officers use Isomer Studio’s drag-and-drop editor to create, edit, and publish sites, with a workflow for review requests, approvals, and publishing approved changes. Agencies can choose layouts, combine components, and customize colours, logos, and favicons. Accessibility prompts cover essential fields, and templates and components are designed to support accessible websites. SEO features include predefined headings, automatically generated tables of contents and folder index pages, image alt text, and customizable meta descriptions. Open Government Products builds and manages Isomer. The Isomer team handles hosting, maintenance, support, and compliance with relevant IM8 and Digital Service Standards clauses, and centrally manages security, including testing such as VAPT and audits. Isomer does not provide website design services or custom designs and layouts. Domain acquisition and management or third-party services such as web monitoring may involve separate costs. The team offers training and technical support.
For and against
For
- Drag-and-drop editing does not require coding.
- Supports review requests and publishing approvals.
- Includes accessibility prompts and SEO features.
- Hosting and security are centrally managed.
Against
- Use is limited to eligible Singapore institutions.
- Custom website design services are not provided.
- Domain and third-party service costs may apply.
- Non-urgent support requests may take up to five working days.
The verdict
Isomer provides eligible institutions with a managed website-building service and a publishing workflow. Organizations should note its eligibility restriction and plan for possible domain or third-party service costs.
Who it suits
Isomer is for Singapore government agencies and public healthcare institutions that need to create and publish static websites without coding. It is not available to organizations outside those eligible groups.
Plans and prices
Isomer
Eligible organisations only · Domain and third-party service costs may apply · Static-site use case
Read 15 Oct 2026 · isomer.gov.sg
On the record
- Accessibility
- The product uses accessibility-focused templates and prompts editors to complete essential accessibility fields.isomer.gov.sg · read 15 Oct 2026
- Adoption history
- A GovTech annual report recorded 76 Isomer websites, 8 million users and 15 million sessions in 2019–2020.isomer-user-content.by.gov.sg · read 15 Oct 2026
- API limitation
- Isomer is intended for static sites and does not support database calls or API-based data retrieval as a core site pattern.isomer.gov.sg · read 15 Oct 2026
- Authentication
- The product report says access to site editing is protected by identity verification through Singpass.reports.open.gov.sg · read 15 Oct 2026
- Compliance
- The service states that it covers relevant IM8 and Digital Services Standards requirements for hosted sites.isomer.gov.sg · read 15 Oct 2026
- Content blocks
- Available blocks include text, images, files, cards, callouts, accordions and section blocks, with availability depending on layout.support.isomer.gov.sg · read 15 Oct 2026
- Customisation
- Agencies can choose page layouts, combine components, and customise site colours, logos, and favicons.isomer.gov.sg · read 7 Oct 2026
- Developer setup
- The repository documents local development with pnpm, local Studio at port 3000 and template preview at port 3001.github.com · read 15 Oct 2026
- Documentation
- The Help Center is organised into 37 migration articles, 44 Isomer Next guide articles and 10 new-feature articles.support.isomer.gov.sg · read 15 Oct 2026
- Editor
- Isomer Studio lets public officers create, edit and publish sites without coding through a drag-and-drop WYSIWYG interface.isomer.gov.sg · read 15 Oct 2026
- Eligibility
- Isomer can only be used by Singapore government agencies and public healthcare institutions.isomer.gov.sg · read 7 Oct 2026
- Hosting
- The Isomer team provides website hosting, maintenance and support for hosted sites.isomer.gov.sg · read 15 Oct 2026
- Hosting and compliance
- The Isomer team is responsible for hosting, maintenance, support, and compliance with relevant IM8 and Digital Service Standards clauses.isomer.gov.sg · read 7 Oct 2026
- Independent open-source description
- The European Commission's Singapore open-source report identifies Isomer as a free static-site builder developed by Open Government Products for government agencies.interoperable-europe.ec.europa.eu · read 15 Oct 2026
- Independent recognition
- Open Government Products announced that Isomer was recognised as a Digital Public Good by the Digital Public Goods Alliance.linkedin.com · read 15 Oct 2026
- Integrations
- Classic Isomer supports whitelisted embeds including VICA, YouTube, Vimeo, FormSG, Data.gov.sg graphs and CheckFirst.classic.isomer.gov.sg · read 15 Oct 2026
- Licence
- The repository uses the MIT License, subject to Singapore-law and arbitration terms and exclusions for government or third-party assets.github.com · read 15 Oct 2026
- Limit: analytics integration
- Legacy Isomer documentation says Google Tag Manager is unavailable because it conflicts with the platform content-security policy.v2.isomer.gov.sg · read 15 Oct 2026
