Document Automation · Reviewed 21 Oct 2026

Carbone

API for generating and converting documents from templates.

free tier · carbone.io ↗

Paid against free › Document Automation › Carbone

Carbone at a glance

Overview

01

Summary

The useful answer before the supporting detail.

Carbone is a document generation and conversion API that turns Word, Excel, PowerPoint, and other files into templates, merges JSON data, and renders PDFs or 100+ formats S13 S4. It is used by developers and business teams to automate reports, invoices, and contracts, reducing dependency on developers for report changes S13 S21. Its practical value is deterministic, fast document production with a no-code template language and AI integration via MCP S21.

02

Product identity and positioning

Name, category, positioning, audience, and first-party claims.

  • Identity: Carbone is a document generation and conversion API with a template engine S13 S4.
  • Core purpose: It solves the problem of dynamic document creation by decoupling design from data S13.
  • Intended users: Developers and business teams who need to automate reports, invoices, and contracts S13 S21.
  • Product scope: It is a platform offering a template engine, document conversion API, template designer (Studio), and MCP server S13 S4 S1 S33.
  • Positioning: Carbone positions itself as a universal template engine that works with familiar tools like Microsoft Office and LibreOffice S13.
  • Claimed distinction: It claims deterministic output and high performance, rendering 234 pages at 141 pages per second S21 S13.
03

Use cases and audiences

Who the product serves and the jobs it is designed to handle.

AudiencePractical use case
DevelopersAutomate report generation by integrating the API into applications S4.
Business teamsEdit no-code templates directly without developer round-trips S21.
AI agentsGenerate documents via MCP server for assistants like AI modeland ChatGPT S33.
Finance teamsCreate quotes and invoices with dynamic data and recalculating totals S21.

Features

09

Features and capabilities

Core functions and evidence-backed product capabilities.

CapabilityWhat it does
Template engineTurns DOCX, XLSX, PPTX, ODT, and other files into templates with Carbone tags for dynamic data injection S13.
Document conversion APIConverts Word, Excel, PowerPoint, HTML, and Markdown to PDF and 100+ formats via a single API call S4.
Template StudioProvides a web designer with live preview and auto-completion for editing templates in Word, LibreOffice, or any editor S1.
AI document generationGenerates production-grade Office files from any AI assistant, with deterministic output S21.
MCP serverConnects AI assistants like AI modeland ChatGPT to Carbone for document generation S33.
Barcode integrationSupports barcode generation in templates via dynamic images or fonts S43.
Chart creationAllows creating charts in documents using Carbone tags, with styling defined in the text editor S50.
10

Integrations and ecosystem

Connected products, exports, APIs, and workflow compatibility.

Integration or interfaceTypeWhat it enables
MCP serverAI interfaceConnects AI assistants to Carbone for document generation S33.
Document conversion APIAPIConverts documents between 100+ formats via API calls S4.
Template StudioExtension frameworkIntegrates into applications for template editing and preview S1.
LibreOffice, OnlyOffice, ChromiumIntegrationUsed under the hood for conversion, managed by Carbone S4.
npm packageSDKProvides a local MCP server for development S33.

Pricing

11

Pricing and plans

Published plans, free access, trials, credits, and pricing limitations.

Plan or offerVerified price and billingIncludedLimits
Free (cloud)€0 per month S1100 documents per month S1100 templates, 1 parallel render S1
Essential (cloud)€29 per month (€26 annual) S11,000 documents per month S1500 templates, Enterprise features S1
Advanced (cloud)€159 per month (€149 annual) S120,000 documents per month S12,000 templates, Studio web component, SSO S1
On-Premise Free€0 per server S1Unlimited documents S1Community Edition only S1
On-Premise Fit€1,500 per year per server S112,000 documents S11 server, Enterprise features S1

Competition

12

Competitive landscape

Domains competing for the same organic search demand.

Sampled competitors

CompetitorFirst-page appearancesSampled queriesAverage positionQueries observed
github.com416golang report
reddit.com223.5golang report, report generator software
pkg.go.dev111golang report
inetsoft.com111report generator software
medium.com112golang report
teamwork.com112report generator software
domo.com114report generator software
en.wikipedia.org115report generator software
unidoc.io116golang report
sourceforge.net117report generator software

Website intelligence — Collected evidence

Customers, testimonials, and first-party review claims

No supporting public-page evidence was collected for this category.

Independent review sources discovered

PlatformStatusDiscovered source
G2discovered_not_scrapedhttps://www.g2.com/products/carbone/reviews
Trustpilotdiscovered_not_scrapedhttps://www.trustpilot.com/review/carbone.io
Capterradiscovered_not_scrapedhttps://www.capterra.com/p/10002897/Carbone/
14

AI visibility

Measured ChatGPT and Google AI mentions with cited sources.

AI-assistant referral traffic

  • Estimated current generative-AI referral share: 1.5%
MonthSource
—All AI assistants

Website intelligence — Collected evidence

Site-stated AI capabilities

Page typeEvidenceSource
featuresCarbone and your AI assistant cover the whole document workflow, from designing the template to shipping the final file. A few things teams build:https://carbone.io/features/ai-document-generation.html
featuresBuilt for AI agents: the Carbone MCP serverhttps://carbone.io/features/ai-document-generation.html
featuresCarbone is the document generation MCP for AI agents, so your assistant gets back a finished, ready-to-send file. Automate it with AI routines, agents that run on a schedule or a trigger and produce documents end to end.https://carbone.io/features/ai-document-generation.html
featuresCarbone is the document automation software for your whole stack. Trigger it from your own app, an AI agent via the MCP server, no-code tools like Make, n8n and Zapier, or your CRM: HubSpot, Salesforce and Odoo.https://carbone.io/features/ai-document-generation.html
featuresKeep the model away from the layout. The LLM outputs only structured data, and Carbone renders the PDF from a fixed template you control. The wording, branding and layout live in the template rather than the prompt, so the same input always gives the same PDF, with nothing for the model to hallucinate.https://carbone.io/features/ai-document-generation.html
featuresDeterministic output: the same Markdown and style always produce the same file, ideal for documentation pipelines and AI-generated content.https://carbone.io/features/document-converter.html
featuresAI Document Generationhttps://carbone.io/features/ai-document-generation.html
featuresConnect your AI assistant to Carbone to design templates and generate industry-grade, on-brand PDF, Word, Excel and PowerPoint documents.https://carbone.io/features/ai-document-generation.html
featuresConnect your AI agent   Get the Carbone Skillhttps://carbone.io/features/ai-document-generation.html
featuresWhat you can build with AI document generationhttps://carbone.io/features/ai-document-generation.html
featuresCarbone and your AI assistant cover the whole document workflow, from designing the template to shipping the final file. A few things teams build:https://carbone.io/features/ai-document-generation.html
featuresDesign templates with your own AI assistant, and produce documents that are always structurally valid and fully editable.https://carbone.io/features/ai-document-generation.html
featuresAutomate invoice, contract and report generation at scale: pull data from your services, let AI structure it, and Carbone renders the document.https://carbone.io/features/ai-document-generation.html
featuresMigrate from another tool: the AI translates the old syntax into clean Carbone tags.https://carbone.io/features/ai-document-generation.html
featuresPredictable cost per document, far cheaper than generating the file with an AI, because you pay per render, not per token.https://carbone.io/features/ai-document-generation.html
featuresYour templates stay yours. Build them by hand in your favourite text or code editor, or draft them with the Carbone Skill and your AI. Either way, you own, review and version the design: logo, colours, legal clauses, and page setup.https://carbone.io/features/ai-document-generation.html
featuresThe open-source Carbone Skill makes any assistant an AI template generator: describe what you want in plain language and it writes correct Carbone tags. Some prompts that just work:https://carbone.io/features/ai-document-generation.html
pricingAI Document GenerationConnect any AI assistant (Claude, ChatGPT, Cursor, Copilot...) to Carbone through the official MCP server, and use the open-source Carbone Skill so AI agents design accurate templates from natural language. Included in every plan.https://carbone.io/pricing.html
pricingConnect any AI assistant (Claude, ChatGPT, Cursor, Copilot...) to Carbone through the official MCP server, and use the open-source Carbone Skill so AI agents design accurate templates from natural language. Included in every plan.https://carbone.io/pricing.html
integrationsWe don’t store, sell, or use your data to train AI.https://carbone.io/

These are first-party product claims, not independent measurements of AI-search visibility.

15

Marketing opportunities

Actions calculated directly from the collected evidence.

OpportunityRecommended actionEvidence
Striking-distance keywordVolume 140 · https://carbone.io/
Important pagehttps://carbone.io/integration/bubble.html · 1 sampled keywords · best position 5
Competitor gap4 first-page appearances across golang report

Website intelligence — Collected evidence

Website evidence gaps

  • customers: no usable public page was collected; verify whether the site publishes this evidence.
  • reviews: no usable public page was collected; verify whether the site publishes this evidence.
  • changes: no usable public page was collected; verify whether the site publishes this evidence.
  • identity: no usable public page was collected; verify whether the site publishes this evidence.
  • technical: no usable public page was collected; verify whether the site publishes this evidence.

Trust and proof

16

Customers, proof, and reviews

Published proof, customer signals, and review evidence.

Independent reviews

PlatformPageHow it was foundNote
Software AdviceCarbone Software Reviews, Demo & PricingGrounded web search## Carbone User Reviews Overall Rating 4.8 Ratings Breakdown 5 79% 4 21% 3 2 1 Secondary Ratings Ease of Use 4.6 Value for money 4.6 Customer support 5.0 Functionality 4.6 ... solutions to help make Carbone a perfect fit, even from a
Product HuntCarbone: Generate and convert any document efficiently / Product HuntGrounded web searchsome other format) It's really easy! I'm impressed. For placement of your data ... .io provides a rich toolbox of functions for formatting and conditional layout. Data placeholders are really simple and can address the JSON in
ratingfacts.comCarbone Reviews / Read 28 Customer Ratings of carbone.io / RatingFactsGrounded web search## Rated 5.00 out of 5 by 28 customers 5 Star 96.4% 4 Star ... with Carbone, highlighting outstanding support and ease of use. The service enables efficient document generation with positive feedback on responsiveness and problem resolution. Users

Customer proof

Proof typeNamed customer or sourceEvidence
Case studyIgnatius Van Zylcustomer case study — Ignatius, General Manager at NextFluent, has leveraged Carbone for the past two years, experiencing significant time savings and efficiency gains in report generation. (How NextFluent Automates Workflows for Pharma, Fintech & Retail)

Independent mentions

  • carboneio/carbone — # carboneio/carbone Fast and simple report generator, from JSON to pdf, xslx, docx, odt... ... : 2119 - Forks: 267 - Watchers: 2119 - Open issues: 58 - License: Other - Homepage: https://carbone.io - Default branch: master - Created: 2017-03-31T15:42:59Z
  • What our customers and partners have to say about their use of Carbone — NextFluent Automates Workflows for Pharma, Fintech & Retail - Ignatius Van Zyl Interview Ignatius, General Manager at ... past two years, experiencing significant time savings and efficiency gains in report generation. About
  • CarboneIO — We unleash every organization's creativity with the most efficient, low-code, and future-proof ... - Login: carboneio - Location: Nantes, France - Blog: https://carbone.io - Public repos: 41 - Followers: 34 - Verified: yes - Created: 2021-05-17T11:04:55Z
  • Témoignage Carbone sur Hubspot avec l'agence Nils — Face aux défis liés à la génération de documents dans HubSpot, l’agence NILE a intégré Carbone dans ses projets clients afin d’automatiser ce processus et d’offrir plus d’autonomie aux utilisateurs finaux. ... - Réduire la dépendance aux développeurs : permettre aux équipes métiers des clients finaux d’adapter leurs modèles de documents sans intervention technique. - ... "Grâce à Carbone, nous avons pu automatiser la génération de documents dans HubSpot tout en réduisant significativement la cha

External links were grounded in one live web search. Search snippets are leads, not independently scraped page content; rejected links remain available in Review evidence.

17

Company, security, and trust

Ownership, policies, security signals, and public trust evidence.

SignalFindingSource
Company and ownershipNot published on the collected pages.—
Contact and supportThe hosted MCP server keeps no copy of your templates, data or documents: it passes each request to the Carbone API, and a download link works once before Carbone deletes the file. Carbone's Privacy Policy covers data prsource
Legal and privacyThe hosted MCP server keeps no copy of your templates, data or documents: it passes each request to the Carbone API, and a download link works once before Carbone deletes the file. Carbone's Privacy Policy covers data prsource
Security and complianceTurn HTML or a live URL into a print-ready PDF with full CSS print support. Carbone's managed Chromium engine handles page breaks, running headers and footers, watermarks and encryption.source
Uptime and status pageNot published on the collected pages.—

Not found on the collected pages: company and ownership, uptime and status page. This only means Scout did not find it on the pages it read; it says nothing about the company itself.

18

Documentation and product updates

Help resources, product guidance, and visible changes over time.

Resource or updateTypeWhat is availableDate or freshness
MCP and AI Integration - Connect AI Assistants to Carbone via MCPDocumentationOfficial MCP server for Carbone. Sign in from AI model, ChatGPT, Cursor or VS Code and let your AI assistant generate production-ready PDF, Word, Excel and PowerPoint documents from templates and JSON data. (source)Not dated
How to integrate barcode in your template?GuideHow to integrate barcode in your template? (source)Not dated
How to create charts in documents?GuideGuides, comparisons, pricing breakdowns, use cases, and how-to articles. (source)Not dated
Carbone – Open Source Report & Document Generation APIProduct updateProduct update is publicly available. (source)Not dated

Not found in the collected public sources: public roadmap, changelog or release notes, status page, separate help center or knowledge base.

Technical

19

Technical and delivery signals

Delivery model, platforms, API, data ownership, reliability claims and release activity.

SignalFindingSource
Delivery model (cloud, self-hosted, desktop, browser extension)Available as cloud API and self-hosted on-premise S4 S33.S4 S33
Platforms and appsWeb-based API and web designer; no native mobile or desktop apps mentioned S1.S1
API and extensibility (API, SDK, webhooks, MCP, plugins)Provides API, MCP server, and npm package S4 S33.S4 S33
Data ownership and exportHosted MCP server keeps no copy of templates, data, or documents; files deleted after download S33.S33
Performance and reliability claimsClaims 17,871 DOCX per minute on 4 CPU, and 7.5 ms for a single DOCX on 1 CPU S13.S13
Release activityNot published on the collected pages.—
20

Measured infrastructure

Domain, certificate, and hosting signals, measured directly.

SignalFinding
TLS certificateLet's Encrypt, valid, expires 2026-12-30
Security headersHSTS, X-Content-Type-Options, X-Frame-Options, Referrer-Policy
Headers not servedCSP
Server headerBunnyCDN-DE1-1328
Mail handled bycarbone-io.mail.protection.outlook.com
Nameserverscoco.bunny.net, kiki.bunny.net

Not measurable: wayback: rate limited by archive.org, ladder stopped after 1 probe(s). A gap here means the lookup was unavailable, not that the finding is negative.

21

Technical site audit

A bounded multi-page crawl with page-level issues and URLs.

Scout — Bounded technical crawl

  • Pages crawled: 15 of 15 maximum
  • Technical health: 98/100
  • Critical issues: 0
  • Warnings: 3
  • Notices: 8

Issues

SeverityIssueValueAffected URL
noticeMeta description length should be reviewed274https://carbone.io/
warningTitle length should be reviewed105https://carbone.io/features/universal-template.html
noticeMeta description length should be reviewed7https://carbone.io/features/universal-template.html
warningTitle length should be reviewed80https://carbone.io/features/carbone-studio.html
noticeMeta description length should be reviewed255https://carbone.io/features/carbone-studio.html
noticeMeta description length should be reviewed178https://carbone.io/features/document-converter.html
noticeMeta description length should be reviewed192https://carbone.io/pricing.html
noticeMeta description length should be reviewed26https://carbone.io/documentation/design/overview/getting-started.html
warningTitle length should be reviewed75https://carbone.io/documentation/quickstart/integration/for-developers.html
noticeMeta description length should be reviewed45https://carbone.io/documentation/quickstart/integration/for-developers.html
noticeMeta description length should be reviewed204https://carbone.io/documentation/developer/ai/mcp.html

Crawled pages

StatusTitleH1sWordsResponseURL
200Carbone – Open Source Report & Document Generation API11253688 mshttps://carbone.io/
200Template engine for Word, Excel, PowerPoint, LibreOffice, Markdown, SVG, XML and HTML documents \Carbone1577194 ms
200Template Studio: live preview for Word, Excel and PowerPoint templates \Carbone1498517 ms
200AI Document Generation: real Office files from any AI \Carbone11572683 ms
200Document Conversion API: convert to 100+ formats \Carbone11099224 ms
200Carbone Pricing: free plan, Cloud API from €29/month, On-Premise16754215 mshttps://carbone.io/pricing.html
200Generate your first report in just a few minutes with Carbone!1454237 mshttps://carbone.io/documentation/quickstart/getting-started/generate-a-document.html
200Design your first template1679234 mshttps://carbone.io/documentation/design/overview/getting-started.html
200Introduction to Carbone APIs11649241 mshttps://carbone.io/documentation/developer/http-api/introduction.html
200Explore Carbone documents and reports samples1261205 mshttps://carbone.io/examples/
200Carbone - Changelog142649567 mshttps://carbone.io/changelog.html
200Integrate Carbone with all your tools1438230 mshttps://carbone.io/integration/
200Carbone Privacy Policy16377282 mshttps://carbone.io/company/privacy-policy.html
200Add report and document generation into your application using our REST API1557216 mshttps://carbone.io/documentation/quickstart/integration/for-developers.html
200MCP and AI Integration - Connect AI Assistants to Carbone via MCP12357187 mshttps://carbone.io/documentation/developer/ai/mcp.html

This is a bounded Scout crawl. Core Web Vitals and Lighthouse scores are not claimed unless a dedicated performance audit is connected.

22

Search Console and Analytics

First-party search and behavioral data connection state.

Modeled acquisition channels

ChannelEstimated share
direct40.8%
search33.9%
search organic32.4%
search paid1.5%
social6.4%
social organic5.7%
social paid0.7%
referrals10.7%
paid referrals2.7%
mail2.6%
gen ai1.5%
affiliate1.4%
other0.0%

First-party connections

IntegrationStatusData available after connection
Google Search ConsoleNot connectedClicks, impressions, CTR, average position, queries, pages, countries, and devices
Google AnalyticsNot connectedOrganic sessions, engagement, landing pages, conversions, geography, and devices

No first-party Search Console or Analytics numbers are shown until the site owner authorizes the corresponding Google account. Scout traffic model values above are modeled estimates, not private analytics totals.

Limits and method

23

Limitations and open questions

Known constraints and missing evidence from the collected pages.

The collected pages do not mention specific competitors. Evidence gaps include lack of detailed customer testimonials, independent reviews, and specific company information. Open questions remain about data residency, compliance certifications, and long-term pricing changes.

24

Sources, method, and limitations

Evidence inventory, collection method, provider use, and constraints.

This report is based on 14 of 15 collected pages from carbone.io, including feature pages, documentation, and pricing. Static and browser rendering rendering were used; external proof search was performed but not verified. Limitations: no independent review data, and some claims are vendor-provided.

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