LightPDF is an AI PDF editor, converter and reader for web, desktop and mobile. Free plan, paid from $5.99/mo, lifetime plan $39.99. See features and pricing.
Researched and fact-checked by Bartu Cavusoglu · Updated October 26, 2026
LightPDF is an AI-powered PDF platform that covers editing, converting, annotating, signing, organizing and chatting with documents. The company describes it as an all-in-one solution under the tagline Make PDF Easy. It is available as a web app, desktop apps for Windows and Mac, mobile apps for iOS and Android, and a Chrome/Edge extension.
What separates it from a basic PDF editor is the AI layer. The same account that handles editing also provides document chat, translation, summaries, data extraction and image cleanup tools. The company positions its Pro plan as professional PDF editing plus all AI tools in one subscription, priced at what it calls half the cost of other editors.
Users open the web app or a desktop or mobile app, choose a tool and upload a file. Core PDF tasks such as editing, conversion, merging and signing run like standard PDF software. Paid plans remove the 10MB file limit, enable batch processing and allow watermark-free downloads, while a single account syncs Pro benefits across platforms.
AI tools run on credits. Each feature has its own cost, shown by hovering over the info icon on the plan comparison. An AI chat use costs 5 credits, PDF translation costs 5 credits per page, and data extraction costs 2 credits per page. Monthly and yearly plans refresh 1,000 credits monthly, and additional credits can be purchased.
The AI toolset is the main differentiator. The PDF AI Agent and ChatPDF let users chat with documents and trace citations, while ChatYouTube answers questions about video content. AI generators produce PDFs and presentations, and another tool creates mind maps, summaries and structured analysis. Translation covers 20+ languages and preserves the original layout, with a separate option for images and scanned PDFs.
Several tools target messy source files. Data extraction pulls structured information from invoices, receipts, bank statements and purchase orders. Image tools remove watermarks, text, logos, stickers and handwriting, and document enhancement improves scans. A newly announced Edit Image Text feature changes text inside images while preserving the design. Standard editing, OCR, signing and batch processing complement these.
LightPDF is an AI-powered PDF platform for editing, converting, annotating, signing, organizing and chatting with documents. It is available on the web, Windows, Mac, iOS and Android.
A free plan costs $0. Paid options are $5.99 per month, $15.99 per year, or a $39.99 one-time lifetime plan listed as a limited offer. Team, business and education plans are also offered.
LightPDF offers a free version with limited access to selected features. The yearly plan also includes a 3-day free trial before you are charged.
AI features consume credits, and the cost varies by feature. Monthly and yearly plans include 1,000 credits per month that expire monthly. The lifetime plan includes 40,000 credits valid until used, and additional credits can be purchased.
The money-back guarantee depends on the plan: 30 days for Perpetual, 7 days for Annual and 3 days for Monthly. The company points customers to its Refund Policy page for details.
One Premium account works across Windows, Mac, Android, iOS and the web. Premium features can only be used on one device at a time.
Yes. Custom team and enterprise plans include centralized billing, user management and volume discounts. A custom quote is available from the sales team.
The company states that data is encrypted in transit and at rest. It lists ISO/IEC 27001, ISO/IEC 27701 and GDPR on its pricing page.