About

LightPDF is a cloud-based PDF platform that bundles editing, conversion, signing, annotation, organizing, and AI-assisted document tools into a single service. It addresses the common problem of juggling several separate utilities to handle routine PDF work such as merging files, converting formats, filling out forms, or extracting content.

The service runs in a web browser and is also offered as installable apps for Windows, Mac, iPhone/iPad, and Android, with a single account carrying paid benefits across all platforms. Beyond conventional PDF utilities, LightPDF includes AI features such as chatting with documents, translating entire files while preserving layout in more than 20 languages, generating presentations and mind maps from documents, and extracting structured data from invoices, receipts, and bank statements. A developer section and API offerings indicate the vendor also serves integration use cases. The company's About page frames its mission around making PDF tasks simple.

Key Features

PDF editing and annotation: Users can modify text, adjust headers and footers, annotate, merge, split, crop, and organize pages directly in the editor.

Conversion tools: The platform converts PDFs to and from common formats, including specialized options such as CAD to PDF and CAJ to PDF.

OCR: Optical character recognition lets users work with scanned documents and extract editable text, including translation of scanned PDFs and images.

AI chat with documents: Users can ask questions about a PDF, request follow-ups, and trace citations back to the source, with a free allowance of three questions per day.

Document translation: Full-document translation covers more than 20 languages while keeping the original layout, at a cost of 5 credits per page.

AI-generated outputs: Documents can be turned into presentations (20 credits per file), mind maps, summaries, and structured analysis (4 credits per file).

Data extraction: The AI data extraction feature pulls structured data from invoices, receipts, bank statements, and purchase orders, for example converting bank statements to Excel at 2 credits per page.

Pricing & Fees

Pricing: A free plan costs $0; the monthly plan is $5.99 per month; the yearly plan is $15.99 per year; a lifetime plan is a one-time $39.99. One payment covers five platforms, with a 30-day money-back guarantee and 24/7 customer service.
Free tier limits: The free plan is web-only, caps file size at 10MB, allows one ChatPDF file per day and three AI Agent questions per day, and provides cloud storage for five files retained for one year.
AI credits: Paid plans include 1,000 credits per month; the lifetime plan includes 40,000 lifetime credits, and extra credits can be purchased.
Platforms: Available on Web, Windows, Mac, iPhone/iPad, and Android, with paid plans unlocking unlimited file size, batch processing, and watermark-free downloads.

Who It's For

LightPDF suits office workers and administrators who regularly convert, merge, and sign PDFs; students and researchers who use AI chat and summarization to read long papers; and finance or accounting staff who need to turn invoices, receipts, and bank statements into structured spreadsheets. It also fits small teams producing presentations or mind maps from existing documents, and developers who want to embed PDF conversion or chat capabilities via its APIs. The combination of a generous free tier and cross-platform apps makes it practical for individuals who move between desktop and mobile devices.

FAQ

What is LightPDF?LightPDF is a cloud-based PDF service that lets users view, edit, convert, sign, annotate, merge, manage, and share PDFs, with additional AI tools for chatting with, translating, and summarizing documents.

Is LightPDF free to use?Yes, there is a free plan with web-only access, a 10MB file size limit, and daily allowances for AI chat; paid plans start at $5.99 per month or $15.99 per year, with a $39.99 lifetime option.

Which platforms does LightPDF support?LightPDF works in web browsers and offers native apps for Windows, Mac, iPhone/iPad, and Android, and a single paid account works across all of them.

How does LightPDF's AI credit system work?AI features consume credits, for example 5 credits per AI chat use and 5 credits per translated page; paid plans include 1,000 credits per month, and additional credits can be purchased.

Does LightPDF offer an API for developers?Yes, the site lists developer products including conversion and chat-document APIs with separate API pricing.

About

Key Features

Pricing & Fees

Who It's For

FAQ

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