# Nitro Pro vs Stirling-PDF

**Leader by vioscaleAI score:** Stirling-PDF

| Attribute | Nitro Pro | Stirling-PDF |
|---|---|---|
| **vioscaleAI score** | 48.5 (55% (medium)) | 59 (67% (medium)) |
| activity.commits_last_30d | - | 100 |
| adoption.dependent_repos | - | 0 |
| adoption.github_stars | - | 94,282 |
| content.faq | `[{"answer":"A software platform combining PDF editing and creation, electronic signature capabilities, and intelligent document automation. Available as cloud-based and desktop applications with built-in AI tools for document analysis and extraction. It is indexed under PDF Editors.","source":"https://www.gonitro.com/","question":"What is Nitro Pro?","confidence":0.6},{"answer":"Nitro Pro offers a free tier, so you can start without paying. Paid plans are also available: Individual/Teams, Plus and Enterprise. Pricing changes often, so verify at source before relying on it.","source":"https://www.gonitro.com/pricing?hsLang=en","question":"Is Nitro Pro free?","confidence":0.6},{"answer":"Nitro Pro supports the web, Windows, macOS and iOS. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://www.gonitro.com/","question":"What platforms does Nitro Pro support?","confidence":0.6},{"answer":"We have only confirmed a cloud / SaaS deployment for Nitro Pro, so it appears to be vendor-hosted. If a self-hosted option exists we have not found it documented publicly.","source":"https://www.gonitro.com/","question":"Can Nitro Pro be self-hosted?","confidence":0.6},{"answer":"We have confirmed 24 integrations for Nitro Pro, including Salesforce, Microsoft 365, Word, Excel, PowerPoint, SharePoint, OneDrive and Teams, plus 16 more. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://www.gonitro.com/","question":"What does Nitro Pro integrate with?","confidence":0.6},{"answer":"We have independently confirmed SOC 2, ISO 27001, HIPAA and GDPR for Nitro Pro. Certifications we do not list are ones we have not been able to verify from public sources, which is not the same as Nitro Pro not holding them. Always confirm compliance directly before you rely on it.","source":"https://www.gonitro.com/","question":"What security certifications does Nitro Pro have?","confidence":0.6},{"answer":"Nitro Pro is available worldwide. Its primary markets are the United States, the United Kingdom, Canada and Australia. The vendor is headquartered in Ireland.","source":"https://www.gonitro.com/pricing?hsLang=en","question":"Where is Nitro Pro available?","confidence":0.75}]` | `[{"answer":"A versatile PDF platform offering editing, signing, redaction, and conversion capabilities. Can run as a standalone desktop application, in a web browser, or deployed on private servers, with REST APIs for integration and workflow automation. It is indexed under PDF Editors.","source":"https://stirlingpdf.com/pricing","question":"What is Stirling-PDF?","confidence":0.6},{"answer":"Stirling-PDF is open source, so it can be self-hosted and used at no licence cost. Pricing changes often, so verify at source before relying on it.","source":"https://stirlingpdf.com/pricing","question":"Is Stirling-PDF free to use?","confidence":0.6},{"answer":"Stirling-PDF supports the web, Windows, macOS, Linux and a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://stirlingpdf.com/pricing","question":"What platforms does Stirling-PDF support?","confidence":0.6},{"answer":"Yes. Stirling-PDF can be deployed hybrid, on-premise and self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://stirlingpdf.com/pricing","question":"Can Stirling-PDF be self-hosted?","confidence":0.6}]` |
| deployment.options | `{"cloud":true}` | `{"cloud":true,"air_gapped":true,"self_hosted":true}` |
| description.long | Nitro is a comprehensive document management platform combining PDF editing, creation, conversion, and eSignature functionality with enterprise-grade security and compliance. It serves individuals, teams, and enterprises with tools for creating, editing, and securely signing documents across cloud and desktop environments. | A comprehensive PDF platform offering 60+ tools for editing, signing, redacting, and converting documents. Available as desktop applications, a web interface, or self-hosted server with API access. |
| features.capabilities | `{"iso_27001":true,"soc2_type_ii":true,"pricing_model":"flat_subscription","deployment_model":"cloud_saas","file_size_compression_engine":true,"interactive_form_field_creation":true,"password_protection_and_encryption":true,"permanent_blackout_redaction_engine":true,"microsoft_office_docx_xlsx_conversion":true,"page_merging_extraction_and_splitting":true,"base_text_and_image_editing_within_pdf":true,"ocr_optical_character_recognition_scanning":true,"digital_signature_certification_enforcement":true}` | `{"pricing_model":"freemium","deployment_model":"cloud_saas","file_size_compression_engine":true,"interactive_form_field_creation":true,"permanent_blackout_redaction_engine":true,"microsoft_office_docx_xlsx_conversion":true,"page_merging_extraction_and_splitting":true,"base_text_and_image_editing_within_pdf":true,"ocr_optical_character_recognition_scanning":true,"digital_signature_certification_enforcement":true}` |
| integrations.count | 26 | 4 |
| integrations.list | `[{"name":"Salesforce"},{"name":"Microsoft 365"},{"name":"Word"},{"name":"Excel"},{"name":"PowerPoint"},{"name":"SharePoint"},{"name":"OneDrive"},{"name":"Teams"},{"name":"Slack"},{"name":"Google Workspace"},{"name":"Zapier"},{"name":"iManage"},{"name":"M-Files"},{"name":"PDF Butler"},{"name":"Alfresco"},{"name":"TalentSoft"},{"name":"Aareon"},{"name":"Silverfin"},{"name":"AdminPulse"},{"name":"Sofico"},{"name":"Azure Information Protection","native":true,"category":"security","direction":"bidirectional"},{"name":"Brio","native":true,"category":"insurance","direction":"bidirectional"},{"name":"Power Automate","native":true,"category":"automation","direction":"bidirectional"},{"name":"Cloud Storage","native":true},{"name":"Microsoft Word","native":true,"category":"productivity","direction":"bidirectional"},{"name":"Microsoft Excel","native":true,"category":"productivity","direction":"bidirectional"},{"name":"Microsoft PowerPoint","native":true,"category":"productivity","direction":"bidirectional"},{"name":"Microsoft Outlook","native":true,"category":"email","direction":"bidirectional"},{"name":"Microsoft Teams","native":true,"category":"chat","direction":"bidirectional"},{"name":"Google Drive","native":true,"category":"productivity","direction":"bidirectional"},{"name":"Dropbox","native":true,"category":"productivity","direction":"bidirectional"},{"name":"Power Apps","native":true,"category":"productivity","direction":"bidirectional"}]` | `[{"name":"SharePoint","native":true,"category":"collaboration","direction":"outbound"},{"name":"S3","native":true,"category":"storage","direction":"inbound"},{"name":"FTP","native":true,"category":"file_transfer","direction":"inbound"},{"name":"OAuth","native":true,"category":"authentication","direction":"bidirectional"}]` |
| language.primary | - | TypeScript |
| market.availability | `{"primaryMarkets":["US","EU"],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | `{"primaryMarkets":["US"],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"ios":true,"mac":true,"web":true,"windows":true}` | `{"cli":true,"mac":true,"web":true,"linux":true,"windows":true}` |
| pricing | `{"type":"subscription","plans":[{"free":false,"name":"Individual","contactSales":false},{"free":false,"name":"Team","contactSales":false},{"free":false,"name":"Business","contactSales":true}],"summary":"Subscription-based pricing for individuals, teams, and businesses. 14-day free trial with no credit card required.","freeTier":false,"sourceUrl":"https://www.gonitro.com/pricing?hsLang=en","retrievedAt":"2026-10-12T21:50:43.923Z","freeTrialDays":14}` | `{"type":"hybrid","plans":[{"free":true,"name":"Free","summary":"$0/month, free forever","features":["60+ PDF tools","Web, desktop, and self-hosted options","Private and open-source","1,000 monthly credits for automation"],"components":[{"kind":"fixed","amount":0,"period":"month","currency":"USD"}],"description":"Open-source PDF editor for individuals","contactSales":false,"includedLimits":{"credits":"1,000/month"}},{"free":false,"name":"Team","summary":"$99/month for 100 users","features":["Everything in Free","Single sign-on (SSO)","Team workspace and invites","Add capacity in blocks of 100 users","One bill instead of per-seat licenses","Central control of tool catalog and deployment"],"minSeats":100,"components":[{"kind":"fixed","amount":99,"period":"month","currency":"USD"}],"description":"For team administration and infrastructure","contactSales":false,"includedLimits":{"users":"100"}},{"free":false,"name":"Enterprise","summary":"Custom pricing","features":["Everything in Team","Air-gapped and self-hosted deployment","SCIM provisioning","Data residency and audit logs","Uptime SLAs","Custom agreement and invoicing"],"description":"For regulated and air-gapped deployments","contactSales":true}],"addOns":[{"name":"PDF Processor Credits","components":[{"per":{"qty":1,"unit":"credit"},"kind":"metered","amount":0.01,"currency":"USD"}]}],"summary":"Free for individuals. Team plan from $99/month for 100 users. Enterprise with custom pricing.","currency":"USD","freeTier":true,"sourceUrl":"https://stirlingpdf.com/pricing","retrievedAt":"2026-10-15T21:11:27.454Z","startingPrice":{"amount":99,"period":"month","currency":"USD"},"billingPeriods":["month"]}` |
| pricing.free_tier | no | yes |
| pricing.model | commercial | freemium |
| pricing.price_level | unknown | high |
| pricing.starting_price | - | `{"amount":99,"currency":"USD"}` |
| pricing.transparent | no | yes |
| release.cadence_days | - | 6 |
| release.history | - | `[{"url":"https://github.com/Stirling-Tools/Stirling-PDF/releases/tag/v3.2.0","date":"2026-10-15T20:36:26Z","type":"prerelease","version":"v3.2.0"},{"url":"https://github.com/Stirling-Tools/Stirling-PDF/releases/tag/v3.1.0","date":"2026-10-05T22:30:24Z","type":"stable","version":"v3.1.0"},{"url":"https://github.com/Stirling-Tools/Stirling-PDF/releases/tag/v3.0.2","date":"2026-10-01T15:15:05Z","type":"stable","version":"v3.0.2"},{"url":"https://github.com/Stirling-Tools/Stirling-PDF/releases/tag/v3.0.1","date":"2026-09-26T21:51:10Z","type":"stable","version":"v3.0.1"},{"url":"https://github.com/Stirling-Tools/Stirling-PDF/releases/tag/v3.0.0","date":"2026-09-24T11:36:26Z","type":"stable","version":"v3.0.0"},{"url":"https://github.com/Stirling-Tools/Stirling-PDF/releases/tag/v2.14.3","date":"2026-08-06T18:48:12Z","type":"stable","version":"v2.14.3"},{"url":"https://github.com/Stirling-Tools/Stirling-PDF/releases/tag/v2.14.2","date":"2026-07-08T09:59:54Z","type":"stable","version":"v2.14.2"},{"url":"https://github.com/Stirling-Tools/Stirling-PDF/releases/tag/v2.14.1","date":"2026-07-07T21:56:29Z","type":"stable","version":"v2.14.1"},{"url":"https://github.com/Stirling-Tools/Stirling-PDF/releases/tag/v2.14.0","date":"2026-06-30T22:48:14Z","type":"stable","version":"v2.14.0"},{"url":"https://github.com/Stirling-Tools/Stirling-PDF/releases/tag/v2.13.2","date":"2026-06-24T21:06:14Z","type":"stable","version":"v2.13.2"},{"url":"https://github.com/Stirling-Tools/Stirling-PDF/releases/tag/v2.13.1","date":"2026-06-19T18:27:49Z","type":"stable","version":"v2.13.1"},{"url":"https://github.com/Stirling-Tools/Stirling-PDF/releases/tag/v2.13.0","date":"2026-06-18T21:29:00Z","type":"stable","version":"v2.13.0"},{"url":"https://github.com/Stirling-Tools/Stirling-PDF/releases/tag/v2.12.0","date":"2026-06-09T20:40:03Z","type":"stable","version":"v2.12.0"},{"url":"https://github.com/Stirling-Tools/Stirling-PDF/releases/tag/v2.11.0","date":"2026-05-19T10:52:27Z","type":"stable","version":"v2.11.0"},{"url":"https://github.com/Stirling-Tools/Stirling-PDF/releases/tag/v2.10.1","date":"2026-05-07T20:07:16Z","type":"stable","version":"v2.10.1"},{"url":"https://github.com/Stirling-Tools/Stirling-PDF/releases/tag/v2.10.0","date":"2026-04-24T13:12:51Z","type":"stable","version":"v2.10.0"},{"url":"https://github.com/Stirling-Tools/Stirling-PDF/releases/tag/v2.9.2","date":"2026-04-04T09:32:15Z","type":"stable","version":"v2.9.2"},{"url":"https://github.com/Stirling-Tools/Stirling-PDF/releases/tag/v2.9.1","date":"2026-04-03T16:48:50Z","type":"stable","version":"v2.9.1"},{"url":"https://github.com/Stirling-Tools/Stirling-PDF/releases/tag/v2.9.0","date":"2026-04-02T18:02:36Z","type":"stable","version":"v2.9.0"},{"url":"https://github.com/Stirling-Tools/Stirling-PDF/releases/tag/v2.8.0","date":"2026-03-24T18:58:13Z","type":"stable","version":"v2.8.0"}]` |
| security.certifications | `[{"name":"SOC 2 Type II","level":"Type II","status":"active"},{"name":"ISO 27001","status":"active"},{"name":"HIPAA","status":"active"},{"name":"QTSP","level":"Qualified Trust Service Provider","status":"active"}]` | - |
| security.disclosure_policy | yes | - |
| security.gdpr | yes | - |
| security.hipaa | yes | - |
| security.iso27001 | yes | - |
| security.soc2 | yes | - |
| security.trust_center | https://www.gonitro.com/resources/security-compliance?hsLang=en | - |
| security.vulnerabilities | - | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=nixpkgs&package_name=stirling-pdf&per_page=100","last_12m":0,"max_severity":null}` |

## Capabilities (PDF Editors)

| Capability | Nitro Pro | Stirling-PDF |
|---|:--:|:--:|
| **Capabilities** |  |  |
| Deployment model | Cloud saas | Cloud saas |
| Base text and image editing within PDF | ✓ | ✓ |
| Page merging extraction and splitting | ✓ | ✓ |
| OCR optical character recognition scanning | ✓ | ✓ |
| Permanent blackout redaction engine | ✓ | ✓ |
| Password protection and encryption | ✓ | - |
| Interactive form field creation | ✓ | ✓ |
| Digital signature certification enforcement | ✓ | ✓ |
| Microsoft office docx xlsx conversion | ✓ | ✓ |
| File size compression engine | ✓ | ✓ |
| SOC2 type ii | ✓ | - |
| ISO 27001 | ✓ | - |
| Pricing model | Flat subscription | Freemium |

*Source: vioscaleAI. Generated 2026-10-16T19:18:41.838Z. "-" = undocumented, not absent.*