Fully Managed Mermaid Live Editor
as a Service

Deploy Mermaid Live Editor as a fully managed service starting at €9/mo. Get automated backups, SSL, updates, support and monitoring included.

Mermaid Live Editor is a diagram-as-code editor for flowcharts, sequence, class, and Gantt diagrams. It pairs the convenience of a hosted diagramming tool with the control of self-hosted infrastructure you run in the region you choose.

✓Free 7-day trial  ✓99.9% Uptime SLA  ✓No credit card  ✓Cancel anytime

✓Free 7-day trial  ✓99.9% Uptime SLA
✓No credit card  ✓Cancel anytime

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Pricing
Mermaid Live Editor

Mermaid Live Editor

STARTING AT

€9/month
Automated Backups
Monitoring
Automated Updates
Auto SSL

USAGE

Unlimited
Human Support
Custom Domains
Terminal Access
File Manager Access
Deploy in your region — 21 locations worldwide
GermanyFinlandNetherlandsUKSwedenUnited StatesCanadaSingaporeJapanAustraliaBrazilSouth Africa+9 more →
Mermaid Live Editor Preview Image

ABOUT THE SOFTWARE

What is Mermaid Live Editor

Mermaid Live Editor is the open-source, browser-based editor for the Mermaid diagram syntax. You write a diagram as text and watch it render live, then export it or share a link. The diagram source is plain text, not a binary file.

The project is published under the permissive MIT license by the Mermaid team, the same maintainers behind the Mermaid diagramming engine the editor bundles. The engine itself is also MIT-licensed and is one of the most widely used diagram-as-code libraries in open source, with more than 90,000 GitHub stars on its repository and a place in the README files of countless projects.

The editor is a self-contained single-page application. It renders diagrams in the browser, has no built-in user accounts, and keeps a rolling history of recent edits in local storage. Each diagram also encodes into a shareable link, so the source travels with the URL rather than living in a separate database. That design is why it deploys as one small container and runs on a modest footprint.

FEATURES

What Mermaid Live Editor does

The editor turns short, readable text into rendered diagrams, live as you type. It covers the common diagram types, exports to SVG and PNG, and shares diagrams as links. These are the editor's own capabilities, separate from the platform features above.

Live split-pane editing

Type diagram code on the left, watch it render on the right in real time. Syntax errors surface inline as you write, not after a save.

Diagram-as-code syntax

Diagrams are written in a short, Markdown-style text syntax. The source is plain text you can keep in Git, review in a pull request, and diff line by line.

Wide diagram-type support

Flowcharts, sequence, class, state, entity-relationship, Gantt, pie, gitgraph, mindmap, timeline, C4, and more, all from the same editor and the same syntax.

SVG and PNG export

Export any diagram to SVG or PNG for docs, slides, or tickets. On a managed instance the export step renders against your own server, not a third party.

Shareable links

Each diagram encodes into a link that reopens the exact source. Send a view or edit link to a teammate; nothing is stored in a separate account system.

Theme and config panel

Switch light and dark themes, adjust layout, and set diagram config from a side panel. A sketch-style render mode is available for rougher, hand-drawn looks.

Local autosave history

The editor keeps a rolling history of your recent edits in the browser, so an accidental change is one step back, not a lost afternoon.

Pan, zoom, and large canvases

Pan and zoom across big diagrams without the layout collapsing. Architecture and sequence diagrams stay legible as they grow.

Software Source
Documentation
Video Tutorials

WHAT'S ALWAYS INCLUDED

Every app. Fully managed.
Nothing extra to pay for.

Every app on DANIAN ships with the same operational baseline. You do not choose a backup add-on or a monitoring tier. Hosting, patching, backups, SSL, and support are part of the €9, and they apply to Mermaid Live Editor the same way they apply to everything else in the catalog.

Automatic updates and patches

Apps run the latest stable version. Security patches applied silently, with rollback if needed.

Daily off-site backups

Multiple daily backups in redundant off-site locations. One-click restore if anything goes wrong.

24/7 uptime monitoring

Continuous monitoring with instant alerting. We respond before you notice.

SSL, firewall, DDoS protection

Auto-renewing SSL, hardened firewall rules, DDoS mitigation on every deployment.

Performance and scaling

We monitor resource usage continuously. When your app needs more headroom, we flag it and upgrade with your explicit approval.

Dedicated engineering support

Real engineers by email and ticket. DNS, SMTP & migration help. All included in €9.

Start 7-day free trial

WHY MANAGED

Why teams pick managed Mermaid Live Editor

Per-editor diagramming subscriptions add up fast. The hosted version of this same editor runs $10 per editor each month, and broader per-seat diagramming tools sit between $9 and $20. Cross five editors and the per-seat math turns against you.

Running the editor yourself is more than starting a container. The published image is built with its settings baked in, and you cannot change them at runtime. To remove the upstream promo links, point the export step at your own server, or set your own domain, you rebuild the container from source with a Node.js and pnpm toolchain. The bundled diagram engine is pinned at build time too, so new diagram types only appear when you rebuild.

There is a quieter catch in that build step. By default the editor's PNG and SVG export sends your diagram code to an external rendering service. For an internal architecture or data-flow diagram, that is the moment your diagram source leaves your control, and the only way to stop it is the same from-source rebuild.

REVIEWS

Hear from customers ​like you​​​​​​​

Successful businesses and professionals around the world rely on DANIAN every day
5 stars review

No more maintenance headaches!

Finally, I can relax and not bother with maintenance. Each of the softwares that we run on DANIAN is automated and running stable for couple months already. They even assist us with modifying the DNS records. Once we needed to modify the config of Nextcloud so that we are able to upload higher than 5GB files and they assisted us fast. I also love their documentation!

Review from Kevin Blackwell

Kevin Blackwell

Review Origin United States
5 stars review

Best managed service

I previously ran Peertube, Mastodon, Mattermost and Mirotalk on other providers before switching to DANIAN. I was tired of handling the updates and backups myself. Not only that the performance is "out of this world" fast, but their tech support is amazing. Since then I added 5-10 more Apps on my account. I also love how they add more softwares on their list constantly!

Review from William Northfield

William Northfield

Review Origin United Kingdom
5 stars review

Love the personalized service!

I own an ecommerce startup. I knew that I need some softwares so that I add automations in my biz. I contacted their support team and I explained my needs. Albert recommended me couple softwares, each for a specific use-case. I signed up for the free trial and tested all. Ended up activating 6 apps. Everything is running smooth 2 months so far. I love the personalized service that I get with them!

Review from George Adams

George Adams

Review Origin United States
5 stars review

n8n runs excellent

We needed to add the ffmpeg functionality to our n8n instance. I contacted their support team. They made the required changes in couple minutes and notified me. Usually for this type of service I would need to hire a developer on a hourly basis. Love them!

Review from David Hartmann

David Hartmann

Review Origin Germany
5 stars review

Smooth experience

I needed a way to manage the projects and files for my company. This was the first time I learn about opensource. I asked their support team and they assisted me immediately. I started with Openproject. Later I added Nextcloud. My team were able to get used to the apps fast.

Review from Levi Nilsso

Levi Nilsson

Review Origin Norway
5 stars review

Bye GA

I wanted to replace GA with something but I didn't know the options. I talked with Jack from support. Couple minutes after that, I have a running Matomo Analytics. They even configured the tracking and connected it with my website. I have only words of appreciation and respect!

Review from Wyatt Mitchell

Wyatt Mitchell

Review Origin Canada
5 stars review

Love the freedom

I wanted to use a crm for my startup. I signed up for the free trial. Tried out espocrm and dolibar and picked one. Their dashboard is very easy for a beginner. I recommend them and feel confident in choosing them.

Review from Elias Koch

Elias Koch

Review Origin Germany
5 stars review

Wow just wow

After discovering DANIAN, I wished I'd found them sooner — their solution is excellent and deserves wider recognition. Very good solution!

Review from Tyler Hollander

Tyler Hollander

Review Origin Canada
5 stars review

Professional tech support!

I thought that I knew what I was doing and I made changes in the Mattermost backend config file. Then it broke. I reached out to their tech and received an incredibly specific and fast response. They found the error fast and provided a clear solution.

Review from Bastian Engel

Bastian Engel

Review Origin Germany
5 stars review

Their support team is the best!

I had a problem with my card and the subscription could not be renewed in time. I notified their support and surprisingly, they showed much understanding. They basically left my apps run until I solved the card issue. Other providers would have deleted my data in a heartbeat. This is the way to build client-vendor trust!

Review from George Adams

George Adams

Review Origin United States
5 stars review

Fair price and fast

4 months ago I activated n8n, Uptime kuma, Vaultwarden and Paperlessngx. So far everything is perfect. The performance of all apps is excellent. I contacted their support team couple times for using custom subdomains for the apps and they were fast and kind. I'm constantly recommending them to my network!

Review from Atanas

Atanas

Review Origin Macedonia
5 stars review

Vaultwarden 10/10

I wanted to selfhost a passwords manager for my company but I didn't trust the mainstream providers. I tried out Vaultwarden for the free trial. I loved how their support team communicated with me professionally but still kind. I know that I can contact them whenever with whatever question I have. Recommended!

Review from James Smith

James Smith

Review Origin United States
5 stars review

Multiple locations options

I run an agency. The majority of our clients are in different countries. I love that DANIAN has 20+ countries and I can spin up any app in any location. This gives us the freedom to focus on our clients. Sure, I can employee a dev in my team, but honestly, I prefer to not have those headaches. With DANIAN everything is running 24/7.

Review from Edward Nelson

Edward Nelson

Review Origin United States
5 stars review

Everything just works!

My focus is on my business, not running servers. I love that I can lauch any app without having to think about the tech behind it. Everything just works!

Review from Tony Roy

Tony Roy

Review Origin United States
5 stars review

Awesome support team!

I signed up for the free trial in order to test Chatwoot. I needed to put a livechat widget on my website but I don't have much tech experience. I contacted their support to see if they can assist. They went above and beyond by generating the livechat widget code for me and inserting it in my website. They answered all my additional questions. 

Review from Filip

Filip

Review Origin Austria
5 stars review

Very proactive!

Today couple of the videos on my Peertube got viral. Before I even noticed, their support have notified me via email that they proactively upgraded my app with more cpu & ram so that it continues to work without any downtime. They left the upgraded app with the added resources for couple days until the traffic stabilizes. After that I had the possiblity to stay on the same plan or keep the upgraded plan. Out of gratitude I stayed on the upgraded one.

Review from Luke Hall

Luke Hall

Review Origin Australia
5 stars review

Win-win!

I run a web design biz. After I perform the work for my clients, they constantly ask me for more software solutions. So I partnered with DANIAN. Not only I provide the requested softwares for my clients and get the increased revenue boost by delegating all to DANIAN, but also for those clients that wish to order directly from DANIAN, I send them an affiliate link. Win-win on all sides!

Review from Luke Walker

Luke Walker

Review Origin United Kingdom
5 stars review

Flexible

For the past couple months I was running many apps with DANIAN for my clients. But one of my clients wanted a software that isn't on the current list. I talked with their tech support. They accomodated me and added the software the same day. The next day, I signed for their Partners program. We will go long way together!

Review from Jeffrey Johnson

Jeffrey Johnson

Review Origin United States
5 stars review

Awesome customer service

I needed to add analytics on my website but I didn't know anything about DNS. Their team guided me at all phases and they performed the changes for me. Additionally they were transparent and notified me of every change applied and steps performed.

Review from Gabriele Marino

Gabriele Marino

Review Origin Italy
5 stars review

Good admin dashboard

Not only that I got Chatwoot, I also have access to the management dashboard. I love that I can view my hourly/daily usage and perform manual backups and restorations if needed. I don't need the level of control but it feels good to know that I have it if I need it.

Review from Matthew Turner

Matthew Turner

Review Origin Canada
5 stars review

Financially wise decision

Why install Chatwoot on a VPS that will cost me $20-25/month. Then worry about security, updates, backups, etc. Instead, I can activate it on DANIAN the same day for half the price. Plus, less headaches for maintenance. So happy I found out about this company!

Review from Andreas Schmitt

Andreas Schmitt

Review Origin Germany
5 stars review

Great service!

I configure custom Matomo tracking for my clients as a monthly service. Many of my clients were asking if they can selfhost Matomo instead of using the Cloud service. My employee recommended DANIAN. Basically, I can activate as much Matomo's in any of 20+ countries the same day. Additionally the affiliate revenue is a nice bonus.

Review from Jacob Turner

Jacob Turner

Review Origin United States
5 stars review

Smooth experience

I was listing through youtube tuts on how to install Bookstack myself. Then randomly, I found their video playlist exactly for Bookstack. Got curious and went at their website. For the same price (or higher) that I would pay for just the VPS, with them I'm getting a fully managed Bookstack. It's a no-brainer decision!

Review from Elias Gustafsson

Elias Gustafsson

Review Origin Sweden
5 stars review

I love opensource software

2 days ago I haven't heard about opensource softwares. Today I'm running 4 apps and enjoying the trip. Hey, 1 month later I may become a developer, haha just kidding. Love you guys!

Review from Mason Hayes

Mason Hayes

Review Origin United Kingdom
5 stars review

Its a great service

Its a great service. I love the performance of my Mastodon community. It keeps on growing and I don't have any worries about backups, secuirity, updates, etc.

Review from Vinícius Rocha

Vinícius Rocha

Review Origin Brazil
5 stars review

Very intuitive solution!

I wanted to use a nocode software for my company. A friend recommended them so I tried both Baserow and NocoDB, couple days later picked one.

Review from Haruto Hashimoto

Haruto Hashimoto

Review Origin Japan
5 stars review

Top-notch security

Honestly, I don't care much about performance and functionalities. I just wish to not bother with hacking attacks so that I can focus on my firm. I recommend them!

Review from Henrik Otto

Henrik Otto

Review Origin Germany
See more reviews

USE CASES

Three teams who run it on DANIAN

Diagram-as-code suits teams that want diagrams reviewed, versioned, and kept on infrastructure they control. These three are representative of who moves a Mermaid editor to a managed instance and why.

6-PERSON SOFTWARE TEAM

Architecture diagrams that live in the repo, not a SaaS seat

A small product team dropped a per-editor diagramming subscription and put a managed instance in the region nearest their developers. Sequence and entity-relationship diagrams now live as text in the same Git repository as the code, reviewed in pull requests. Export renders against their own instance, so system diagrams never leave the server they pay for.

TECHNICAL DOCS TEAM

One diagram source format across every documentation page

A documentation team runs the editor on a subdomain of their docs site. Writers author diagrams as text and paste the same source into the static-site build, so there are no binary image assets to chase or re-export. When a diagram changes, the change shows up in the page diff like any other line of content.

DIGITAL AGENCY

Unbranded client diagrams, handed over as portable text

An agency uses a private instance with the upstream promo links stripped and its own domain in front. Architecture and process diagrams go to clients as deliverables, and the client keeps the plain-text source. No proprietary file, no tool lock-in, and nothing pointing back at a vendor the agency would rather not advertise.

COMPARISON

Four ways to run Mermaid Live Editor

The same editor is free and open-source, so the real question is who runs it. A per-editor hosted product scales with your headcount. The self-hosted paths are flat per instance but cost you setup, patching, and rebuilds. Here is the math.

The per-editor line is the only one that climbs with headcount. The self-hosted paths cost the same whether one person draws or twenty, because a single instance serves them all. What they ask for instead is your time: setup, patching, and a from-source rebuild to change a setting. Our row trades that time for a flat €9, and it stays €9 as the team grows.

How you run it1 editor5 editors10 editorsYour time / monthNotes
Mermaid Chart (hosted)$10/mo$50/mo$100/mo0 hrsThe same editor as a paid product, priced per editor. Your diagram source sits on their service. The Plus tier is $10 per editor per month, billed annually.
Self-host on a VPS~$44/mo~$44/mo~$44/mo1–2 hrs + rebuildsA $24/month production-class VPS plus backup and monitoring. One instance serves your whole team, but you patch it, and you rebuild the container from source to change any setting.
Home server€35–100/mo€35–100/mo€35–100/mo2–4 hrsA business-grade box such as a Synology DS923+ (~€650) amortised, plus electricity, a static-IP business line, and an off-site backup target. You are on call.
DANIAN managed Mermaid Live Editor€9/mo€9/mo€9/mo0 hrsOne flat price for the instance, whatever the editor count. We patch, back up, monitor, and keep the diagram engine current. You write diagrams; we run the box.

Hosted-product pricing reflects the Plus tier at $10 per editor per month, billed annually; verify current pricing before you decide. VPS and home-server figures cover one shared instance. A production-class VPS is taken at ~$24/month before backup and monitoring.

BY INDUSTRY

Mermaid Live Editor for specific industries

Diagram-as-code lands differently across fields. Some want diagrams in pull requests, some in a docs build, some on a network that makes no outside calls. Open a section for how we set the editor up for each.

Engineering teams document systems with the C4 model and keep those diagrams next to the code. On a managed instance, the editor renders and exports against your own server, so an architecture or sequence diagram that maps internal services never travels to a third-party renderer. Diagrams are written as text, committed to the repository, and reviewed in pull requests like any other change. There are no binary diagram files to fall out of date, because the source and the rendered output come from the same lines. A team of any size shares one instance for a flat price, so the cost does not climb as more engineers start drawing. We keep the bundled diagram engine current, which is what brings new diagram types to your editor.

Documentation teams that work docs-as-code want diagrams to behave like the rest of the docs: versioned, diffable, and built from text. The editor produces diagram source that drops straight into a static-site pipeline, so a flowchart or state diagram is rendered at build time rather than pasted in as a flat image. Following a structure such as Diátaxis, a writer can keep a tutorial's flow diagram beside its prose and update both in one commit. We serve the editor on a subdomain of your documentation domain so the toolchain stays on one host. One source format covers every page, which removes the export-and-re-import step that quietly rots screenshots. Reviewers see diagram changes in the page diff, not as an opaque attachment.

Agencies and consultancies ship architecture and process diagrams as client deliverables, and they want them clean and portable. We strip the upstream promo and sign-up links and put your own domain in front, so the editor a client sees is yours, not a vendor's. Diagrams hand over as plain-text source the client can keep and re-render anywhere, which means no proprietary file and no tool lock-in to explain in a handover. A single instance covers an unlimited number of people drawing across client projects at a flat price, so a busy month does not turn into a per-seat invoice. When you revise a diagram for a client, the change is a line edit in version control, not a re-drawn canvas.

Instructors and training teams build flowcharts, Gantt charts, and mindmaps for course material, often for a whole cohort at once. A shared instance with no per-student accounts lets a class open the editor and start drawing without a sign-up step, and a flat price means a cohort does not become a seat count. Diagrams export to SVG, which keeps the text inside the image readable by assistive technology rather than baking it into pixels. We can keep the instance reachable only inside your network for a course run on managed devices. Because diagrams are text, a teacher can hand out the source for a diagram and have students extend it, which turns a static figure into an exercise.

Some teams cannot let internal system diagrams touch an outside service at all. The stock editor sends diagram code to an external renderer when you export to PNG or SVG; on a managed instance we point that renderer back at your own server, so the export step makes no third-party call. For teams that need it, the instance can run network-isolated, reachable only from inside your own network. Internal data-flow and infrastructure diagrams then stay on infrastructure you control, in the region you choose. Diagrams remain plain text you can move or archive without a proprietary viewer. We will tell you plainly which parts of an air-gapped setup we can operate and which need a human on each change, rather than implying every switch is one click.

FAQ

Frequently asked questions

Three groups of questions: how the editor and your diagram data behave, how moving to a managed instance works, and how billing, support, and the platform run.

01

Technical and configuration

No. The editor renders diagrams in your browser, so the source you type while editing is not sent anywhere during normal editing. On a managed instance the page and its assets are served only from the instance you control.
On the stock editor, export sends your diagram code to an external rendering service. We point that renderer back at your own instance, so the export step renders locally and makes no third-party call. Your diagram source stays on the server you pay for.
Flowchart, sequence, class, state, entity-relationship, Gantt, pie, quadrant, requirement, gitgraph, C4, mindmap, timeline, sankey, and several newer types. The exact set depends on the bundled engine version, which we keep current so new diagram types reach your editor.
We track the upstream releases and rebuild your instance when a new engine version lands. The stock published image bundles a fixed engine version, so without us you would rebuild the container from source each time you wanted the newest one.
Yes. Export to SVG or PNG and drop the file into docs, slides, or a ticket, or keep the text source and render it wherever your toolchain already renders this diagram syntax. The source is plain text, so it travels.

02

Migration and onboarding

21 datacenter locations across six continents. You choose the region at provisioning. Application data sits in the region you choose; pick whichever is closest to your users or matches your data-residency preference.
Yes. Request a region migration from the dashboard and we run the move in the background. The system emails you when the migration completes; total transfer time depends on data volume but typical instances finish in a few hours. There is no extra charge for a region change.
Yes. Full data export is available at any time, in a portable format you can bring to any infrastructure.
If your team already writes this diagram syntax, moving is mostly copy-and-paste, because the source is identical across tools. The work is pointing your domain at the new instance and deciding who reaches it.
Yes. Paste the diagram source into the editor and it renders as-is. There is no import format to wrangle, because a Mermaid diagram is just its text. Diagrams kept in Git or in Markdown files come over unchanged.
Those tools store diagrams in proprietary formats, so there is no clean one-click path out. You recreate each diagram as text once. After that it is portable forever and never trapped in a single tool again.
Yes. Tell us the subdomain you want and we walk you through the one DNS record, or check it for you. Custom domains are included; there is no add-on charge for putting the editor on your own address.
You already hold them. Diagrams are plain text, so there is nothing to export from a proprietary store. Keep the source files, and any rendered SVG or PNG you exported, and you are done. The app is open-source; we only operate it.

03

Billing, support, and platform

€9 covers everything we do for that app: hardware in the region you choose, daily off-site backups with one-click restore, automatic security patches and version upgrades, 24/7 monitoring, SSL and firewall, and engineering support on email and the ticket section in the client portal. There are no setup fees or hidden line items. For more info see our Pricing page.
If you decide to continue, we charge €9/app/month from day 8. If you don't, the trial ends and you can export your data. No card is required for the trial, and we never auto-charge you without explicit consent.
No. The €9/month is flat regardless of how many users log into your app. Add 5 users or 50; the price doesn't change.
24/7 email and ticket support, both staffed by engineers who run the systems. We handle DNS configuration, SMTP setup, app integrations, performance tuning, troubleshooting, and migration help. Response time is typically under an hour. There is no tier system — every customer gets the same support.
Yes. Cancel from the dashboard. We don't charge a cancellation fee, we don't lock data, and we will export your data to you on request before deletion. data to you on request before deletion.
Every customer instance is backed up daily to a separate region from the primary. We test restores. You can request a restore at any backup point within the retention window — usually 7 days for daily backups.
Your application data sits in the region you choose at provisioning — 21 datacenter locations across six continents. Account-level data (billing, account email, support ticket history) is processed centrally. Application data region is picked by you, per app.
99.9% uptime SLA on every app, every tenant. Service credits are documented at danian.co/service-level-agreement. The status page is located at status.danian.co.
When your tenant approaches the resource ceiling — the base tier holds 1 vCPU/RAM, 30 GB storage — we notify you. Resource upgrades happen with your explicit consent; we will not upgrade your tenant or charge you without it.
We wait. We don't suspend the app or delete your data on the first failed charge. We email you, you fix the card on file, and we continue.
Invoices can be downloaded from the billing dashboard in PDF the day each charge succeeds. EU VAT is added where applicable and the VAT-reverse-charge regime applies for VAT-registered businesses with a valid number.
150+ open-source apps across automation, team chat, file sync, analytics, AI, password management, email marketing, dev tools, project management, smart home, CMS, and federated social. See the full catalog →
Yes. Every instance comes with a web-based terminal and a file manager in your DANIAN management dashboard. Useful for managing your data and customizations.
Resources scale with your usage. If your app needs more vCPU, RAM, or storage, we add it — and we ask first before any change to your plan. €9 is the floor; resource-heavy workloads may price higher, but you'll always know in advance.
Yes. We have both a Partner program and an Affiliate program available. Anybody can sign up.
No contract. No minimum commitment. Cancel anytime from the dashboard with one click. The 7-day free trial requires no credit card. After the trial converts to paid, you can still cancel at any month without notice or penalty.

DEPLOY IN YOUR REGION

21 datacenter locations on six continents

Pick the region closest to your users.

United States, Germany, Finland, Singapore, Australia, Brazil, Canada, Netherlands, UK, Spain, Italy, France, Sweden, Malaysia, India, Japan, Mexico, Poland, South Korea, Chile, South Africa and more coming soon

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