pdf-lib
A JavaScript library for creating and modifying PDF documents with font and form field support
- Also known as
- pdf-lib
What is pdf-lib?
A programming library that enables developers to create, edit, and manipulate PDF files with support for embedded fonts, form field creation, page embedding, and text drawing.
pdf-lib pricing
We don't have pdf-lib's full plan breakdown yet (its pricing page resisted automated reading). Here's what we could confirm. Always check live pricing for exact numbers.
What pdf-lib does
The capabilities that matter for pdf editors, normalised so it lines up with every alternative. “-” means we haven't confirmed it, not that it's missing.
- Deployment model
- -
- 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
- -
Platform & deployment
Independently observed- Web
Security & compliance
Known vulnerabilities: 0 (0 in the last 12 months) sourcea count reflects scale & disclosure, not quality
pdf-lib FAQ
Common questions about pdf-lib, answered from independent, dated evidence.
What is pdf-lib?
A pure JavaScript PDF manipulation toolkit that runs across any JavaScript environment including web browsers, Node.js, Deno, and React Native. It enables creating new PDFs, editing existing documents, filling forms with various field types, embedding fonts, and merging or splitting pages. It is indexed under PDF Editors.
Source: https://pdf-lib.js.org/
Is pdf-lib free?
pdf-lib offers a free tier, so you can start without paying. Pricing changes often, so verify at source before relying on it.
Source: https://pdf-lib.js.org/
What platforms does pdf-lib support?
We have confirmed browser-based access to pdf-lib. That is the extent of what we could verify from public sources, so it may well offer desktop or mobile clients we have not indexed.
Source: https://pdf-lib.js.org/
Is pdf-lib open source?
Yes. pdf-lib is published under the MIT licence, a permissive licence that generally allows commercial use and modification. Licence terms can change between releases, so verify against the repository for the version you intend to use.
pdf-lib alternatives
Other pdf editors we track, ranked by the same independent score.
- Foxit PDF EditorProfessional PDF editing and document management software with AI-powered features for creation, collaboration, and digital workflowsmedium · 73%
- iLovePDFA comprehensive cloud-based platform for PDF document processing and managementmedium · 73%
- Stirling-PDFOpen-source PDF editor with tools for editing, signing, and bulk processing on any infrastructuremedium · 67%
- PyMuPDFA fast Python library for extracting data from and modifying PDF documentsmedium · 63%
- Nitro ProCloud and desktop PDF editor with eSignature capabilities for document creation, editing, and digital signing workflowsmedium · 55%
- SejdaWeb and desktop PDF editor for document manipulation and managementmedium · 53%
Compare pdf-lib
Side by side against other pdf editors, attribute by attribute, with a source on every value.
The vioscaleAI score: one lens on the evidence
Not user reviews and not a paid placement: a confidence-weighted blend of the independent signals below (adoption, activity, security posture, and more), which you can sort and re-weight yourself. Vendors can correct their listing but can never move their rank, and stars are weighted low as a vanity metric. It is one way to read the evidence for pdf-lib, not the verdict.
| Signal | Score | Weight | Contribution | Evidence |
|---|---|---|---|---|
| Release cadence | 89 | 0.05 | 4.7 | ✓ |
| Capabilities | 58 | 0.07 | 4.1 | ✓ |
| Dependent projects | 56 | 0.06 | 3.5 | ✓ |
| Stars | 74 | 0.03 | 1.9 | ✓ |
| Integrations | 0 | 0.08 | 0.0 | - |
| Development activity | 0 | 0.09 | 0.0 | ✓ |
| Security posture | 0 | 0.06 | 0.0 | - |
| Package downloads | 0 | 0.14 | 0.0 | - |
| Security score | 0 | 0.04 | 0.0 | - |
| Developer Q&A activity | 0 | 0.06 | 0.0 | - |
Computed . Re-weight it by intent, or see the full method.
All data & sourcesshow ↓
Every value we hold, with its source, retrieval date, and confidence. This is the evidence behind the score: don't trust it, verify it.
Activity
| Attribute | Value | Evidence |
|---|---|---|
| Commits last 30d | 0 | mediumsource · 2026-10-15 · 65% |
Adoption
Content
| Attribute | Value | Evidence |
|---|---|---|
| Faq | 4 items | mediumsource · 2026-09-10 · 69% |
Features
| Attribute | Value | Evidence |
|---|---|---|
| Capabilities | Interactive form field creation, Page merging extraction and splitting, Base text and image editing within pdf | mediumsource · 2026-10-15 · 60% |
Language
| Attribute | Value | Evidence |
|---|---|---|
| Primary | TypeScript | highsource · 2026-10-15 · 90% |
License
| Attribute | Value | Evidence |
|---|---|---|
| Spdx | MIT | highsource · 2026-10-15 · 95% |
Pricing
Release
Security
| Attribute | Value | Evidence |
|---|---|---|
| Vulnerabilities | Count: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=pdf-lib&per_page=100 · Last 12m: 0 | highsource · 2026-10-15 · 90% |
Is pdf-lib the right choice for you?
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