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LightPDF

lightpdf.com

From $1.33/mo Free plan WebWindowsmacOSLinuxiOSAndroid
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Spec score 9.2 #6 of 104 in PDF editors

What it is

LightPDF is an AI-powered PDF service for editing, converting, annotating, signing, organizing, and chatting with documents. Its AI Agent accepts chat requests for tasks such as merging, conversion, watermark removal, page numbering, and compression. Other listed AI features include translation, image processing, data extraction, invoice generation, and document enhancement. LightPDF offers a conversion API for PDFs and office documents, including Word, Excel, PowerPoint, images, HTML, and text. It is available on the web, Android, iOS, macOS, and Windows, with a Chrome/Edge extension. The free plan is web-only, limits files to 10MB, includes five cloud files for one year, and allows three AI Agent questions per day. Monthly and yearly plans include 1,000 AI credits per month; the lifetime plan includes 40,000 credits valid until used. Monthly costs $5.99 a month, Yearly costs $15.99 a year and includes a 3-day free trial, and Lifetime costs $39.99 a month. Premium features can be used on one device at a time.

Spec sheet

What it does
LightPDF is an AI-powered PDF service for editing, conversion, annotation, signing, organization, document chat and related workflows across web, mobile and desktop.Read 15 Oct 2026 · lightpdf.com
Product
LightPDF describes itself as an AI-powered PDF solution for editing, converting, annotating, signing, organizing, and chatting with documents.Read 29 Sep 2026 · lightpdf.com
Free plan
YesRead 20 Sep 2026 · lightpdf.com
API
LightPDF offers a conversion API for converting PDFs and office documents to and from formats including Word, Excel, PowerPoint, images, HTML, and text.Read 29 Sep 2026 · lightpdf.com
Integrations
LightPDF's MCP documentation says its server can be configured in MCP-compatible clients such as Cursor and Claude.Read 29 Sep 2026 · lightpdf.com
Security
The pricing page states that data is encrypted in transit and at rest and lists ISO/IEC 27001, ISO/IEC 27701, and GDPR.Read 29 Sep 2026 · lightpdf.com
Support
The pricing page says users can contact live chat or submit a support ticket and receive a response within 24 hours.Read 15 Oct 2026 · lightpdf.com
Founded
2018Read 23 Sep 2026 · lightpdf.com
AI Agent
Its AI Agent accepts natural-language or command-style instructions and can chain operations such as conversion, merging and compression in one chat workflow.Read 15 Oct 2026 · lightpdf.com
AI credits
The monthly and yearly plans include 1,000 AI credits per month, and the lifetime plan includes 40,000 credits valid until used.Read 29 Sep 2026 · lightpdf.com
AI PDF Generator
The AI PDF Generator creates formatted PDFs from user text or instructions, with basic or advanced models, adjustable length and 20 languages.Read 15 Oct 2026 · lightpdf.com
AI presentation creation
The AI PPT Generator turns uploaded documents, audio or video into PowerPoint presentations using slide templates.Read 15 Oct 2026 · lightpdf.com
AI tools
The pricing page lists AI chat, generation, translation, image processing, data extraction, invoice generation, and document enhancement features.Read 29 Sep 2026 · lightpdf.com
Android listing
The Android listing offers PDF conversion, OCR, compression, merging and batch processing, supports Android 5.0+, and reports 100K+ downloads.Read 15 Oct 2026 · play.google.com
API deployment
The API is cloud-based and requires internet access; private deployment is currently offered for PDF-to-Word conversion services.Read 15 Oct 2026 · lightpdf.com
API file handling
API source and processed files are physically deleted within 60 to 75 minutes after processing, and LightPDF says staff do not view files.Read 15 Oct 2026 · lightpdf.com
API metering
The API charges conversion at one credit per 20 MB or 100 pages, OCR at two credits per page, photo enhancement at one credit per image, editing at one credit per task and ChatPDF per question plus upload.Read 15 Oct 2026 · lightpdf.com
Browser extension
The maker lists a Chrome/Edge extension among LightPDF platforms.Read 29 Sep 2026 · lightpdf.com
Business plans
The maker offers custom team and enterprise plans with centralized billing, user management, and volume discounts by quote.Read 29 Sep 2026 · lightpdf.com
Chat documents
Chatdoc accepts PDF, Word, Excel, PowerPoint, EPUB, TXT, webpages and scans for AI analysis, summaries and key-point extraction.Read 15 Oct 2026 · lightpdf.com
Cloud storage
The free plan includes cloud storage for five files for one year, while each listed paid plan shows unlimited cloud storage.Read 29 Sep 2026 · lightpdf.com
Company founding
LightPDF's about page says its PDF team was formed in January 2015 and the LightPDF brand launched in January 2018.Read 15 Oct 2026 · lightpdf.com
Company headquarters
Crunchbase lists Lightpdf headquarters in Shenzhen, Guangdong, China; the Android developer address is in Hong Kong.Read 15 Oct 2026 · crunchbase.com
Company history
LightPDF's About page says its team began in January 2015 and launched the LightPDF brand in January 2018.Read 29 Sep 2026 · lightpdf.com
Company legal name
LightPDF is identified as a software product provided by Wangxu Technology Co., Ltd.Read 15 Oct 2026 · lightpdf.com
Core tools
The product provides PDF editing, conversion, signing, OCR, annotation, page organization and other document-processing tools.Read 15 Oct 2026 · lightpdf.com
Cross-device use
A Premium account works across Windows, Mac, Android, iOS, and web, but Premium features can only be used on one device at a time.Read 29 Sep 2026 · lightpdf.com
Downloads
Official downloads are provided for Windows, macOS, iOS and Android, with web and Chrome/Edge extension access also linked.Read 15 Oct 2026 · lightpdf.com
File limit
The free plan supports files up to 10MB, while the listed paid plans show unlimited file size.Read 29 Sep 2026 · lightpdf.com
Licence
LightPDF's EULA describes the software as copyrighted proprietary software, licensed for one computer at a time, with redistribution, sublicensing and network hosting restricted.Read 15 Oct 2026 · lightpdf.com
Limit: customer service
A G2 reviewer describes customer care as difficult and says links between LightPDF and Apowersoft create confusion.Read 15 Oct 2026 · g2.com
Limit: iOS editing
An App Store reviewer says the iOS app adds text boxes but cannot directly edit existing PDF text and may use a different font.Read 15 Oct 2026 · apps.apple.com
Limit: OCR accuracy
G2 reviewers report that OCR does not work well on some document types.Read 15 Oct 2026 · g2.com
Limit: pricing
Reviewers on G2 and Capterra describe the price as high or steep.Read 15 Oct 2026 · capterra.com
Limit: processing speed
G2 reviewers mention slower processing on larger files.Read 15 Oct 2026 · g2.com
Limit: scan quality
An App Store reviewer reports blurry images, scans capped at three pages or fewer and performance problems.Read 15 Oct 2026 · apps.apple.com
Mind maps and summaries
LightPDF can analyze an uploaded document, URL or entered text to create mind maps, summaries and follow-up chat.Read 15 Oct 2026 · lightpdf.com
Notable news: OCR launch
A February 5, 2026 press release announced JPG-to-Word, image-to-text and image-to-Excel OCR tools.Read 15 Oct 2026 · finance.yahoo.com
PDF tools
Its web guide says the AI Agent can perform PDF tasks such as conversion, merging, watermark removal, page numbering, and compression through chat.Read 29 Sep 2026 · lightpdf.com
Praise: broad PDF workflow
Independent reviewers describe conversion, editing, compression, OCR and AI document chat as useful in one application.Read 15 Oct 2026 · capterra.com
Praise: usability
G2 reviewers repeatedly praise LightPDF's clean, intuitive interface and ease of use.Read 15 Oct 2026 · g2.com
Privacy practices
The privacy policy says LightPDF collects account, usage, device and optionally uploaded-file data, uses service providers and analytics tools, and supports account-data deletion requests.Read 15 Oct 2026 · lightpdf.com
Rating on Apple App Store
4.1 out of 5 from 54 ratingsRead 15 Oct 2026 · apps.apple.com
Rating on Capterra
5.0 out of 5 from 7 reviewsRead 15 Oct 2026 · capterra.com
Rating on G2
4.6 out of 5 from 22 reviewsRead 15 Oct 2026 · g2.com
Rating on Trustpilot
3.7 out of 5 from 75 reviewsRead 15 Oct 2026 · trustpilot.com
SDK deployment
LightPDF advertises browser, on-premise, offline and cloud API/low-code deployment options, with Java and .NET SDKs for Linux, Windows and macOS on-premise deployments.Read 15 Oct 2026 · lightpdf.com
SDK integrations
The SDK supports JavaScript, TypeScript, React, Vue and Angular and can be shipped through npm or CDN.Read 15 Oct 2026 · lightpdf.com
SDK scope
The Web SDK covers PDF creation, viewing, annotation, editing, signing, page manipulation, forms, redaction, templates, measurement and PDF/A conversion.Read 15 Oct 2026 · lightpdf.com
SDK trial
The SDK page offers a seven-day free trial with full engineering support.Read 15 Oct 2026 · lightpdf.com
Security certifications
LightPDF lists ISO/IEC 27001, ISO/IEC 27701 and GDPR compliance or certification claims on its official pages.Read 15 Oct 2026 · lightpdf.com
System requirements
The iOS app requires iOS 14.0 or later and is listed as 118 MB.Read 15 Oct 2026 · apps.apple.com
Translation
PDF Translation preserves the original layout as much as possible and supports more than 20 languages; Chrome and Edge translator extensions are offered.Read 15 Oct 2026 · lightpdf.com

Plans and prices

Free Plan Free Sign Up Free Web only · 10MB maximum file · cloud storage 1 year/5 files · AI Agent 3 questions/day · ChatPDF 1 file/day · AI PDF Generator 1 file · AI Mind Maps/Summaries/Analysis 1 file/day · PDF Translation 1 file · AI Data Extraction 1 file · AI Invoice Generator 1 file · Watermark Remover 1 file · Logo/Text Remover 1 file · Sticker Remover 1 file · Document Enhancement 1 file · Image/Scanned-PDF Text Editor 1 file · Handwriting Remover 1 file Read 15 Oct 2026 · lightpdf.com
Monthly Plan $5.99 a month $5.99 /mo Web/mobile/desktop · unlimited file size · unlimited cloud storage · 1,000 AI credits/month Read 15 Oct 2026 · lightpdf.com
Yearly Plan $15.99 a year $15.99 /yr Web/mobile/desktop · unlimited file size · unlimited cloud storage · 1,000 AI credits/month · 3-day free trial Read 15 Oct 2026 · lightpdf.com
Lifetime Plan $39.99 a month Web, mobile, and desktop access · Unlimited maximum file size · Unlimited cloud storage · 40,000 lifetime AI credits Read 20 Sep 2026 · lightpdf.com
Lifetime Plan $39.99, paid once $39.99 one-time Web/mobile/desktop · unlimited file size · unlimited cloud storage · 40,000 lifetime AI credits Read 15 Oct 2026 · lightpdf.com

Every LightPDF plan and price →

Strong points and limits

Strong points

  • AI Agent handles PDF tasks through chat.
  • Conversion API supports PDF and office-document formats.
  • Paid plans list unlimited file size and cloud storage.
  • Data is encrypted in transit and at rest.

Limits

  • Free plan is web-only.
  • Free plan limits files to 10MB and five cloud files.
  • Premium features work on one device at a time.
  • Yearly plan costs $15.99 a year.

Who it suits

LightPDF suits people who need PDF tools across web and desktop or mobile platforms, or who want to use chat for document tasks. Its free plan may fit web-only users working with files no larger than 10MB.

LightPDF in depth

Read the full write-up

Overview

LightPDF is a PDF service with editing, conversion, signing, organization, and AI tools for working with documents. It suits people who want routine PDF operations and document questions in one place, with an API and browser extension for workflows beyond its main interface. Its broad toolset is appealing, but the free tier is limited to web use, 10MB files, and three AI Agent questions a day.

The LightPDF team began in January 2015 and launched the brand in January 2018. Paid accounts work across web, desktop, and mobile, but Premium features are limited to one device at a time.

Key features

Chat-driven PDF tasks: The AI Agent can handle operations such as conversion, merging, watermark removal, page numbering, and compression through chat. That is useful for occasional file work, but three questions a day on the free plan makes regular AI-assisted use a paid proposition.

Broader AI toolkit: Listed capabilities include AI chat and generation, translation, image processing, data extraction, invoice generation, and document enhancement. This breadth suits varied document workflows; monthly and yearly subscribers get 1,000 AI credits per month, while lifetime access includes 40,000 credits that remain valid until used.

Conversion and integrations: A conversion API handles PDFs and office documents to and from formats including Word, Excel, PowerPoint, images, HTML, and text. The maker also lists a Chrome/Edge extension and an MCP server configurable in compatible clients such as Cursor and Claude, giving developers and workflow-oriented users more ways to reach the service.

Security and support: LightPDF states that data is encrypted in transit and at rest and lists ISO/IEC 27001, ISO/IEC 27701, and GDPR. Support is available by live chat or ticket, with a stated response within 24 hours.

Pricing

LightPDF is freemium. The free plan costs nothing and is web-only, with a 10MB maximum file size, cloud storage for five files for one year, and three AI Agent questions per day. It is suitable for occasional, small-file work, but the storage duration and daily question cap make it a poor fit for ongoing document workloads.

The Monthly Plan costs $5.99 a month, billed monthly. It adds web, mobile, and desktop access, unlimited file size and cloud storage, and 1,000 AI credits per month. It fits someone who wants to avoid a longer commitment, though the same-device-at-a-time restriction applies to Premium features.

The Yearly Plan costs $15.99 a year, billed yearly, with a 3-day free trial. It includes the same platform access, unlimited size and storage, and 1,000 monthly AI credits as the Monthly Plan. For readers comfortable paying annually, it is substantially cheaper than paying 5.99 USD each month; the trial is brief, so it offers only a short window to assess the service.

The Lifetime Plan is priced at $39.99 a month as stated and includes web, mobile, and desktop access, unlimited file size and cloud storage, and 40,000 lifetime AI credits. Its stated monthly price makes it difficult to treat as a conventional one-time lifetime purchase; the credit allowance is finite even though credits do not expire before use.

Team and enterprise plans use custom pricing by quote and offer centralized billing, user management, and volume discounts. These are the relevant route for organizations needing managed seats rather than individual subscriptions.

Platforms

LightPDF lists Android, iOS, macOS, Windows, web, an API, and a browser extension. The free plan is web-only; paid plans specify web, mobile, and desktop access. Premium use is cross-platform, but only one device can use Premium features at a time. The API and MCP configuration add options for software integrations, while the extension is listed for Chrome and Edge.

Who it's for

LightPDF is best for individuals who combine conventional PDF work with AI-based document tasks and value access across web, desktop, and mobile. Its API, extension, and MCP support also make it relevant to teams building document operations into broader workflows. It is less compelling for frequent free use, large files on the free tier, or users who need simultaneous Premium access on several devices.

Pros and cons

Pro: PDF utilities and a varied AI toolkit sit in one service, reducing the need to separate routine editing, conversion, and document questions across products.

Pro: Paid plans remove file-size and cloud-storage limits, and support web, mobile, and desktop use.

Pro: API, browser extension, and MCP options offer paths beyond the core web interface.

Con: The free plan's 10MB file cap, five-file cloud allowance for one year, and three daily AI questions constrain anything beyond light use.

Con: Premium features work on only one device at a time, limiting simultaneous multi-device use.

Con: The Lifetime Plan's stated price is $39.99 a month, not a clearly one-time payment, and its AI allowance is capped at 40,000 credits.

Alternatives

AskYourPDF is a reasonable alternative for readers focused on asking questions of documents; its Premium plan gives 2,500 pages per document, a 31MB upload maximum, 50 documents per day, and 1,200 questions per day for $11.99 a year, billed yearly.

Veryfi API is a better fit when document extraction through an API is the priority: its free plan allows up to 100 documents per month across all document types, with limited storage and email support.

Scholarcy is an alternative for article summarization and flashcards; its free plan includes 10 summaries and exports flashcards one at a time.

Unstract is worth considering for a self-hosted document-processing setup; its Open Source plan is free for one user and includes Slack community support.

Explainpaper is another option for readers who want to understand papers through highlighted-text explanations; its free plan includes unlimited highlight explanations, follow-up questions, Zotero import, and basic AI models.

Amazon Textract AnalyzeExpense is the alternative to consider for an expense-analysis API rather than a general PDF workspace; new AWS customers can use its free tier for up to 100 pages per month for three months.

SciSpace suits readers centered on research papers, with a free Basic plan offering 100 monthly credits and a Premium plan priced at $12 a year, billed annually.

Reducto is an API-oriented alternative with a free allowance of $150 in usage, pay-as-you-go billing afterward, and up to five Studio seats.

LightPDF also sits alongside AI PDF tools, PDF merger software, and PDF editors for readers comparing by task.

Verdict

Choose LightPDF if you want one service for everyday PDF operations, AI document work, and conversion across several platforms, with an API and workflow integrations in reach. The yearly plan is the clearest value for a regular individual user, while the free plan is only a limited preview. Look elsewhere if you need generous no-cost use, simultaneous Premium use across devices, or a straightforward one-time lifetime price.

Verdict

LightPDF combines conventional PDF utilities with AI chat and conversion tools across several platforms. Compare the free limits and credit allowances with your document volume, and note that Premium features are restricted to one device at a time.

Where Specifiction places it

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