Coherent PDF
Coherent PDF: A PDF automation toolkit for developers, with free AGPL use and paid commercial licenses. Ranked #31 of 35 in PDF Software by our editors (6.4/10); pricing: Free plan; best for developers automating PDF page and metadata tasks.
At a glance
- Editor score6.4 / 10
- PricingFree plan
- Best forDevelopers automating PDF page and metadata tasks
- Free planYes
- Paid from$599/unit one-time
- Edit PDF textNo
- Facts checked24 Sep 2026
Where it wins
- Automates merging, splitting, page changes, encryption, and compression.
- Handles metadata, bookmarks, annotations, attachments, and image tasks.
- Command-line tools support Windows, macOS, and Linux; APIs cover six languages.
Where it doesn't
- Commercial command-line licenses start at a one-time $599 per license.
- OCR, electronic signing, and PDF editing are not listed as capabilities.
- Free use is under the AGPL, which may not suit every deployment.
Our verdict on Coherent PDF
Coherent PDF is a toolkit for processing documents through command-line tools and programming-language APIs, aimed at developers and organizations that need scripted PDF work. It covers merging and splitting, page scaling, rotation, cropping and page boxes, encryption and decryption, compression, bookmarks, annotations, metadata, attachments, and image handling. It can also create PDFs from text files or images and add watermarks, stamps, page numbers, and Bates numbers. The command-line tools are listed for Windows, macOS, and Linux; deployment is self-hosted. Its focus is document processing rather than an interactive PDF editor, making it a better fit for repeatable workflows than for users who want to edit PDFs manually or sign them electronically.
The licensing choice is central. Cpdf can be used at no cost under the AGPL, subject to that license’s terms. For commercial command-line use, the vendor lists a perpetual one-license option at $599, or $689 with one year of support and upgrades, and $779 with three years. The CPDFLIB API and Command Line Tools license costs $899 per license, rising to $1,069 with one year of support and upgrades or $1,249 with three years. Those API packages list access for C, C++, Python, .NET, Java, and JavaScript. These are one-time license prices, not monthly per-user subscriptions; multi-license, site, developer, and cloud-use pricing requires contacting the vendor.
The feature breadth is useful when a workflow needs more than page rearrangement: encryption, lossless file-size reduction, annotations, metadata, attachments, and batch processing are all relevant to automated document pipelines. Email and documentation are listed support channels, while support and upgrades are explicit additions to some paid packages. Choose Coherent PDF if command-line or API-driven processing and control over deployment matter, and if the AGPL or per-license commercial terms suit the project. A user seeking OCR, electronic signatures, or a general-purpose visual PDF editor should look elsewhere.
Your product? Our editors can test Coherent PDF in depth and publish a review, labelled as paid · from $149/mo →
Coherent PDF pricing
All 6 Coherent PDF plans and prices →
Coherent PDF fact sheet
| Free plan | Yes |
|---|---|
| Paid from | $599/unit one-time |
| Edit PDF text | No |
| PDF conversion | Yes |
| OCR | No |
| E-signing | No |
| Supported platforms | Windows, macOS, Linux, API |
| Batch processing | Yes |
| Deployment | Self-hosted |
| Platforms | Windows, macOS, Linux |
| Support | Email, Docs |
| Built for | Small business, Mid-market, Enterprise (editorial estimate) |
| Pricing | Free plan (source) |
| Website | coherentpdf.com |
| Facts checked | 24 Sep 2026 |
Alternatives to Coherent PDF
- Foxit PDF EditorA broad PDF editor with OCR, forms, redaction, and desktop, web, and mobile support.9.4
- SmallpdfA broad PDF toolkit across web, desktop, mobile, and Chrome, with a free plan and paid tiers.9.3
- iLovePDFA broad PDF toolkit with a free plan, editing, OCR, conversion, and signing workflows.9.2
See all Coherent PDF alternatives →
Used Coherent PDF? Be the first to review it
The editor score above is our own research. What this page doesn't have yet is a reader's view — what you used Coherent PDF for, what worked and what didn't. No stars are seeded and no review is paid for; an editor reads every one before it appears.
Write a reviewTwo minutes · verified accounts only · read by an editor before it appears
Featured on iTechGuides
Coherent PDF is listed in our PDF Software directory. Add the badge to your site — it links back to this page.
<a href="https://www.itechguides.com/products/coherent-pdf/"><img src="https://www.itechguides.com/best/badge/coherent-pdf.svg" alt="Featured on iTechGuides" width="230" height="46"></a>
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
Last updated · How we research and update