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Nitro PDF Pro

Commercial PDF editor and eSign suite for Windows, Mac and iOS.

Jobs Edit Sign Convert OCR Protect

Operated by Nitro Software, Inc.

Visit Nitro PDF Pro

Opens the vendor's own site.

Jobs covered

Open a task to see exactly what the vendor documentation supports.

Edit Browse all edit tools

editing PDFs with Nitro PDF Pro, where the Windows user guide documents adding, editing, moving and flattening text without reopening the original source file, a Type Text tool for adding text anywhere and controlling font, size and colour, an Edit tool for modifying existing text within a paragraph with automatic paragraph-level reflow, image replacement and deletion, annotations and markup, forms, and page and document operations, and the iOS user guide documents Correct Text for editing inline text and copy/paste of text and objects; the scope records the documented existing-text, image, annotation, form and page editing on the installed Windows, macOS and iOS apps, makes no layout-fidelity guarantee, and leaves OCR to its own job

Sign Browse all sign tools

signing PDFs with Nitro PDF Pro, where the Windows user guide documents digital signatures that verify the signer's identity and confirm the document has not changed after signing, using a digital ID or certificate from the signature gallery, with Nitro restricting some actions to preserve the signed state and saying digital IDs or certificates can support legal validation; Nitro Sign is documented as a separate e-signing service with its own plans and cloud processing.

The scope records the certificate-based digital signature in the installed Windows product and keeps Nitro Sign separate, and makes no certificate-authority issuance, trust-validation, trusted-timestamp or independent legal-validity guarantee, and makes no Mac or iOS certificate-signing claim because those guides were not read

Convert Browse all convert tools

converting and exporting PDFs with Nitro PDF Pro, where the Mac user guide documents exporting a PDF to Microsoft Word DOCX, Microsoft Excel, PowerPoint, PDF/A, text and image formats through File Export, with a language selection for added accuracy, and the product page documents creating, converting and combining PDFs and exporting to Word, Excel and PowerPoint; the scope records the documented PDF export and conversion directions in the installed app, makes no fidelity guarantee for converted documents, and does not claim a cloud conversion route for the desktop export function

OCR Browse all ocr tools

running OCR with Nitro PDF Pro, where the Windows user guide documents OCR of existing PDFs and scanned documents, adding an invisible text layer for searchable and selectable text and optional editable text, with settings for language, quality Low, Medium or High, image downsampling and compression, and the Mac user guide lists OCR of scans; the scope records the documented OCR of scanned PDFs and images into searchable or editable output with the language and quality settings, and makes no accuracy guarantee for any language or document type

Protect Browse all protect tools

protecting PDFs with Nitro PDF Pro, where the Mac security guide documents user passwords required to open and view a document, owner passwords required to change permissions, permissions restricting saving, printing or copying, and three encryption levels: 40-bit RC-4, 128-bit AES and 256-bit AES, with compatibility depending on the level and the reader; the scope records the documented password, permission and encryption-level controls in the installed app, and makes no reader-enforcement guarantee, no universal-compatibility guarantee and no claim that a chosen encryption level is unbreakable

Where your files are processed

Mixed - depends on version and feature

The vendor's own documentation separates them. On the device: Nitro PDF Pro installed on Windows and macOS. On their servers: Smart Tools online services. A single answer for the whole product would be wrong for one of them.

It depends on the feature. The installed editor works on files on the machine, and that is distinct from the online services: the current documentation places Smart Redact, extraction and PDF chat inside Smart Tools, and the guide describes those as online services requiring a Nitro account with admin-controlled access.

An absolute no-server badge cannot describe both, so the processing state is recorded per feature and AI redaction is not described as exclusively a separate application, nor is every desktop licence treated as including every online service.

What it does

Nitro PDF Pro is a commercial desktop PDF editor and e-signing product for Windows, macOS and iOS, sold in Standard, Plus and Classic plan tiers. It handles editing existing text, images and objects, annotations, forms, page organisation, conversion and export, OCR of scanned documents, password security and digital signatures, and connects to Microsoft 365, Salesforce, SharePoint and cloud storage.

The current macOS app is version 26.4 and the iOS app is version 26.2. Editing, OCR and PDF export run in the installed application, while Nitro Sign, Smart Redact, Nitro Automate and the AI document tools are separate cloud services.

The current rendered pricing page lists Standard at USD 15 per user per month billed annually at USD 180.00 and Classic at USD 270.00 per licence for a three-year Windows term, with a 14-day trial and no free tier. Direct purchases through checkout.gonitro.com are sold and billed by Nitro Software Ecomm Limited as an authorized reseller to Nitro Software, Inc., while the macOS and iOS App Store listings name Nitro Software, Inc. as the seller.

Best for

Businesses and professionals who want one commercially supported PDF editor with e-signing and Microsoft 365 or SharePoint integration rather than a free tool.

Worth knowing

The earlier recorded GBP 138 per year figure is not on the current rendered pricing page. The page currently lists Nitro PDF Standard at USD 15 per user per month, billed annually at USD 180.00, and Nitro PDF Classic at USD 270.00 per licence billed once for a three-year Windows term, with Plus being quote-only; no GBP price is shown, so this record leaves priceFromGbp null and does not convert the USD amounts.

There is a 14-day free trial and no permanent free tier. The direct-checkout seller is Nitro Software Ecomm Limited, First Floor, 80 Harcourt Street, Dublin 2, D02F449, Ireland, acting as an Authorized Reseller to Nitro Software Inc.; the Ecommerce Terms say Nitro, not Nitro Ecomm, provides and operates the services.

The macOS and iOS App Store listings independently name Nitro Software, Inc. as the seller, so the direct-checkout and app-store seller surfaces are separate and are not conflated. The owner/controller remains Nitro Software, Inc., and the USD list prices are attributed to the direct-checkout surface rather than to the App Store listings.

The product marketed as Nitro PDF Pro is now sold as the Standard, Plus and Classic tiers rather than under a PDF Pro tier name, and Classic is a three-year Windows term licence rather than a perpetual or monthly plan. Digital signatures in Nitro PDF Pro use a digital ID or certificate and the Windows user guide says the signature confirms the document has not changed since signing and that Nitro restricts some actions to preserve that state; the vendor does not publish a certificate-authority issuance, trust-validation or trusted-timestamp guarantee, and this record makes none.

Nitro Sign is a separate e-signing service with its own plans and cloud processing, and bulk e-signing, Smart Redact, Nitro Automate and the AI document tools are separate products rather than features of the installed editor. Editing existing text, images and objects, OCR and PDF export are documented in the desktop and iOS user guides and are treated as installed-app features, while Nitro Sign and the AI services are cloud or vendor services.

The security guide documents user and owner passwords and 40-bit RC4, 128-bit AES and 256-bit AES encryption levels, but the record makes no reader-enforcement or universal-compatibility guarantee, and the choice of encryption level affects which PDF readers can open the file. No current first-party Nitro or Apryse page read in this audit states an Apryse ownership or acquisition relationship, so the owner is recorded as Nitro Software, Inc. and no Apryse claim is inferred.

Details, and where each comes from

Vendor statements, our own reading of their pages, and the things nobody has established yet, each answered separately. Where we have not confirmed something it says so rather than guessing, and a row nobody has established is greyed out.

Versions covered
Windows · macOS · iOS
Website
gonitro.com
Requires an account
Yes
Free tier
No
Watermark on trial output
Not verified
Maximum file size
Not verified
Batch processing
Not verified
Data residency
Not verified
Open source
No
Self-hostable
No
Licence
Proprietary.

Proprietary. Nitro Software, Inc., 447 Sutter St, STE 405 #1015, San Francisco, CA 94108, USA, is the controller named in the privacy policy and the provider/operator of the services; the site footer also carries Nitro Software, Inc.

Licence sales through checkout.gonitro.com are sold and billed by Nitro Software Ecomm Limited, First Floor, 80 Harcourt Street, Dublin, Dublin 2, D02F449, Ireland, acting as an Authorized Reseller to Nitro Software Inc.; the Ecommerce Terms say Nitro (not Nitro Ecomm) provides and operates the services. The macOS and iOS App Store listings separately name Nitro Software, Inc. as the seller, so the direct-checkout and app-store seller surfaces are recorded separately rather than merged.

Nitro PDF is sold in plan tiers: Standard is a subscription at USD 15 per user per month billed annually at USD 180.00, Plus is quote-only for larger organisations, and Classic is a USD 270.00 per-licence three-year term for Windows desktop billed once. Those USD figures are the prices shown on Nitro's current rendered pricing/checkout surface and are therefore attributed to the Nitro Ecomm direct-sales surface, not to the App Store listings.

The current rendered pricing page publishes no GBP figure, so the record does not assert a GBP price or convert the USD figure. There is a 14-day free trial and no permanent free tier.

The software is proprietary with no open-source licence or source distribution.

Redaction
Removes the content
Programmatic access
None
Last availability check
Responded in 173 ms 21 October 2026

Checked automatically by our own runner, not reported by the vendor. 100% of our last 30 checks got a response.

What the redaction verdict rests on

From the vendor's own documentation, read 22 September 2026. Not tested by us.

“With intuitive tools, you maintain complete control to review, adjust, and publish documents with permanent, untraceable redactions.”

What that does not establish

The vendor’s product page, not a test we ran - and not the step-by-step guidance, which is the more specific source and describes the mechanism differently by platform. The Windows documentation states permanent removal explicitly, while the Mac documentation says only that text can be blocked out or erased.

Read this against the platform you actually use.

https://www.gonitro.com/pdf

What the vendor says

Claims are labelled rather than repeated as fact. Where we have checked something ourselves, it says so and shows when. Checked means we read the vendor's own page and it says what we recorded - not that we tested the behaviour, unless the note says we did.

  • “Edit, convert, secure, and sign PDF with annotation, OCR, and more. Compatible with Mac, Windows, and iOS. Try free for 14 days.”

    Checked by us - the source only partly supports this Read 21 September 2026

    Partial, and for a reason the campaign has not recorded before: the recorded quotation is stale rather than wrong. The page no longer carries "Edit, convert, secure, and sign PDF with annotation, OCR, and more".

    Its strapline now reads "Edit, convert, secure, and automate with the AI-powered PDF solution that includes everything teams need for faster, smarter work. Try free for 14 days.

    No credit card required, no hidden fees." Of the claim's three components, two survive: the 14-day trial is verbatim, and the platform list appears as "across Windows, Mac, and iOS" against the claim's "Mac, Windows, and iOS". The third does not survive in any form - OCR and annotation are named nowhere on the page, and "sign" is replaced by "automate".

    So the source supports part of the claim and no longer carries the rest. This is a defect in our record rather than a contradiction by the vendor, and it is the first stale quotation found in this campaign, which is itself the finding: claims sourced from marketing straplines change without notice, and the index has no mechanism that would notice.

    Recorded as partial rather than refuted because the page does not say otherwise about OCR - it simply no longer says this.

    Standing: Re-read and matched byte for byte

    Check it yourself: the source, the SHA-256, and how we checked
    Read
    https://www.gonitro.com/pdf
    From
    the text a browser renders
    SHA-256
    01498d7ac3db6f8bcbeff444b1d4addb16a7b57f9e868e446a445d31247144c4

    How we checked

    https://www.gonitro.com/pdf rendered in headless Chrome with scripts/render-page.mjs on 2026-09-21 (visible text 11397 bytes) and the claim checked against that text, including a search for each of the claim's components separately. sourceHash is the SHA-256 of the rendered text.

    What this hash proves, and what it does not

Each claim is quoted from the vendor's own pages. This section describes what we have and have not checked - it is not a judgement about anyone.

Sponsorship is distribution, not an endorsement or a promise of search rankings, AI citations, traffic, or sales. This listing is a free entry, compiled from published sources.

Visit Nitro PDF Pro Report a problem

Related reading

How this record was put together

Editorial review.
No editor has signed this record off. That is not the same as nothing having been checked, and the lines below say what has.
Source reading.
1 claim taken from the vendor's own pages, read between 21 September 2026 and 21 September 2026.
Website availability.
The vendor's site was last checked on 21 October 2026.
Behaviour testing.
We ran this ourselves. The file handling was watched directly.

Sources: gonitro.com pages (home, pdf, pricing, integrations, technical requirements, plan guide, compare, security-compliance, FAQ, best-pdf-editors, legal/privacy-policy). Vendor claims, not independently verified.

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