pdf-lib review
A broad, developer-focused PDF toolkit for browser and JavaScript workflows.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
pdf-lib is an open-source JavaScript and TypeScript library for creating and modifying PDF documents. It is aimed at developers building browser and JavaScript-based PDF workflows rather than users seeking a visual document editor. The library can create PDFs from scratch, modify existing files, manipulate pages, draw text and vector graphics, embed fonts and images, work with interactive forms, and save output as bytes or Base64/data URIs. Its web and API positioning makes it suitable for applications that need PDF generation or manipulation within a JavaScript environment.
Its strongest area is breadth within core PDF operations. Developers can add, insert, remove, split, merge, and copy pages, while also embedding PNG and JPEG images, standard and custom fonts, and existing PDF pages. Form support includes creating, filling, reading, and flattening interactive fields. Metadata can be set and read, and inputs can include text, vector graphics, images, fonts, and existing PDF pages. This makes pdf-lib a practical fit for document assembly, form workflows, and programmatic PDF editing where the implementation belongs in application code.
Distribution and ecosystem fit are also central. pdf-lib is available through npm, Yarn, unpkg, and jsDelivr, with browser use and API access supported. The published description also identifies compatibility with Node, Deno, and React Native, and the library is licensed under the MIT License. It is less suited to teams looking for template data merging or bulk generation as core capabilities. Choose pdf-lib when JavaScript control over PDF structure and output matters; consider another option when non-developer authoring, data-driven templates, or high-volume generation is the primary requirement.
pdf-lib pros and cons
- Where it wins
- Creates, edits, splits, merges, and copies PDF pages
- Supports text, graphics, images, fonts, metadata, and forms
- Runs across web and JavaScript environments with API access
- Where it doesn't
- Does not cover template data merging
- Does not cover bulk PDF generation
- Requires JavaScript or TypeScript development
pdf-lib fact sheet, pricing and score →
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