How do their growth rates compare?

LightPDF has a month-over-month growth rate of -15.3%; Plume has —.

How does pricing compare?

LightPDF: Freemium. Freemium. A free plan covers basic PDF tools with a 10MB file cap; paid plans start around $5.99/month, with a yearly tier and a one-time lifetime option. AI features consume monthly credits that differ by plan. Plume: Free. Free to install and use from the Chrome Web Store. No paid tiers are advertised on the extension listing.

What are alternatives to LightPDF and Plume?

Other tools in related categories include ChatGPT, Claude, DeepL, PDFgear, PDNob PDF Editor.

Head-to-Head Benchmark

LightPDF vs Plume

LightPDF records 1,742,568 monthly visits with -15.3% month-over-month growth and Freemium pricing. Plume records 0 monthly visits with — growth and Free pricing.

LightPDFFreemiumTraffic Leader

Free AI-powered PDF editor, converter and reader for every device

Monthly Visits

1.74M

MoM Velocity

-15.3%

Top Market

🇮🇳 India

View LightPDF Analysis

lightpdf.com

PlumeFree

Turn long articles and papers into clear summaries while you browse

Monthly Visits

0

MoM Velocity

—

Top Market

🌐 Global

View Plume Analysis chromewebstore.google.com

Side-by-Side Traffic & Specification Matrix

Dimension / Metric	LightPDF	Plume
Official Domain	lightpdf.com	chromewebstore.google.com
Pricing Model	Freemium	Free
Monthly Visits	1.74M (1,742,568)	0 (0)

Primary Market & Share	🇮🇳 India (24.9%)	🌐 Global (—)

Direct Visits / mo	442.07K	0

User Rating	4.2	3.4

Supported Platforms	Website	Browser Extension

LightPDF

Free AI-powered PDF editor, converter and reader for every device

AI document agent and chat

Upload a PDF and ask questions in natural language, follow up on details and see which passages the answers came from. A separate chat mode works with YouTube videos.

Layout-preserving translation

Translate whole documents, including scanned and image-based PDFs, into 20+ languages while keeping the original formatting and layout intact.

AI data extraction to spreadsheets

Convert invoices, receipts, bank statements and purchase orders into structured, editable Excel files automatically.

Full PDF editing and conversion suite

Edit text and images, OCR scanned pages, convert to and from Office formats, then merge, split, compress, watermark, sign and annotate.

Strengths & Pros

+Very broad toolkit that covers both everyday PDF chores and advanced AI document tasks
+Free tier is usable for light jobs, and the paid plans are cheaper than many competing PDF editors
+Layout-preserving translation and AI data extraction handle scanned documents that trip up simpler tools
+One subscription covers five platforms, including desktop and mobile apps

Frequently Asked Questions: LightPDF vs Plume

LightPDF has 1,742,568 monthly visits, while Plume has 0. Traffic estimates describe audience size, not product quality.

More Head-to-Head Matchups

Best Alternatives to LightPDF & Plume (12)

Limitations

–Free plan caps files at 10MB and adds watermarks on some outputs
–AI features run on a credit system, so heavy usage means top-ups or a higher tier
–Advanced AI operations like text editing or logo removal consume credits quickly

Plume

Turn long articles and papers into clear summaries while you browse

One-click article summaries

Condense a long article into a short, clear summary directly in the browser instead of reading the whole page.

Works on research papers and documents

Designed for dense text such as academic papers and long-form documents, not only news articles.

Runs inside Chrome

Installs as a Chrome extension, so summaries are available on the pages you are already reading with no separate app.

Very small footprint

The extension package is about 11 KB, keeping the browser light and startup fast.

Strengths & Pros

+Free to use with no account setup required
+Handles both web articles and academic or document-style text
+Extremely small extension size, so it barely affects browser performance
+Developer disclosure states data is not sold or used for unrelated purposes

Limitations

–

Small user base with no ratings yet, so independent quality signals are limited

–Last listed update was mid-2024, so the pace of ongoing development is unclear

–Chrome-only, with no Firefox, Safari, or mobile browser version advertised

01

ChatGPT

6B/mo

SpecialistOpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.

AI ChatbotFreemium+2.2%

02

Claude

1.3B/mo

SpecialistAnthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing.

AI AssistantFreemium+23.8%

#2

03

DeepL

95.1M/mo

SpecialistEnterprise-grade neural machine translation, AI writing refinement, and real-time voice translation across thirty-plus global languages.

AI TranslateFreemium63% direct

#3

04

PDFgear

2.8M/mo

Offers a completely free PDF editing and AI assistant experience, but lacks some of LightPDF's cloud-native collaboration features.

AI PDFFree24% direct

PDFgear editor interface showing PDF text editing and AI chat panel

05

PDNob PDF Editor

2.4M/mo

Offers a robust desktop suite for OCR and editing, but requires software installation unlike cloud platforms.

AI PDF EditorFreemium, Free Trial, Paid+1.2%

Screenshot of PDNob PDF Editor editing a PDF with the AI summary panel open

06

pdf.net

1.3M/mo

Provides quick browser-based PDF editing and e-signatures, but has a less advanced conversational AI assistant.

AI SummarizerFreemium, Free14% direct

Screenshot of the pdf.net dashboard with numbered tools for editing, converting and signing PDF documents

07

UPDF AI

1.1M/mo

Provides a more polished cross-platform desktop PDF editing suite, but requires a paid upgrade for full AI features.

AI PDFFreemium, Free Trial, Paid19% direct

Screenshot of UPDF AI showing a summarised PDF beside the document and AI chat panel

08

ChatPDF

1M/mo

Offers a streamlined conversational interface for querying PDFs, but provides fewer document editing and conversion utilities.

AI PDFFreemium44% direct

Screenshot of ChatPDF with an uploaded research paper and a chat thread containing answers linked to source pages

09

Glasp

889.6K/mo

Highlight the web, learn in public, and build your AI clone

AI Research ToolFreemium45% direct

Glasp library showing highlights with notes, tags and AI-generated summaries

10

Summarizer.org

398.5K/mo

Free AI Summarizer for text, articles, URLs and images

AI SummarizerFreemium+1.3%

Screenshot of the Summarizer.org tool showing input options, the length slider and generated bullet-point summary

11

PDF.ai

387.8K/mo

Excels at developer API integration and chatting with PDFs, but lacks comprehensive traditional PDF editing tools.

AI PDFFreemium, Free Trial33% direct

12

Kome AI

174.9K/mo

Summarize, bookmark and write with AI right in your browser

AI SummarizerFreemium30% direct

Kome AI extension summarizing a long article and saving it to the bookmark library

#1

Visit

ChatGPT

6B/mo+2.2%

Official

SpecialistOpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.

AI Chatbot73% direct

Freemium

Visit

Claude

1.3B/mo+23.8%

Official

SpecialistAnthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing.

AI Assistant72% direct

Freemium

Visit

DeepL

95.1M/mo

Official

SpecialistEnterprise-grade neural machine translation, AI writing refinement, and real-time voice translation across thirty-plus global languages.

AI Translate63% direct

Freemium

Visit

PDFgear

2.8M/mo

Offers a completely free PDF editing and AI assistant experience, but lacks some of LightPDF's cloud-native collaboration features.

AI PDF24% direct

Free

Visit

PDNob PDF Editor

2.4M/mo+1.2%

Official

Offers a robust desktop suite for OCR and editing, but requires software installation unlike cloud platforms.

AI PDF Editor22% direct

Freemium, Free Trial, Paid

Visit

pdf.net

1.3M/mo

Provides quick browser-based PDF editing and e-signatures, but has a less advanced conversational AI assistant.

AI Summarizer14% direct

Freemium, Free

Visit

UPDF AI

1.1M/mo

Official

Provides a more polished cross-platform desktop PDF editing suite, but requires a paid upgrade for full AI features.

AI PDF19% direct

Freemium, Free Trial, Paid

Visit

ChatPDF

1M/mo

Official

Offers a streamlined conversational interface for querying PDFs, but provides fewer document editing and conversion utilities.

AI PDF44% direct

Freemium

Visit

Glasp

889.6K/mo

Highlight the web, learn in public, and build your AI clone

AI Research Tool45% direct

Freemium

Visit

Summarizer.org

398.5K/mo+1.3%

Free AI Summarizer for text, articles, URLs and images

AI Summarizer26% direct

Freemium

Visit

PDF.ai

387.8K/mo

Excels at developer API integration and chatting with PDFs, but lacks comprehensive traditional PDF editing tools.

AI PDF33% direct

Freemium, Free Trial

Visit

Kome AI

174.9K/mo

Summarize, bookmark and write with AI right in your browser

AI Summarizer30% direct

Freemium

LightPDF vs Plume

Side-by-Side Traffic & Specification Matrix

LightPDF

Strengths & Pros

Frequently Asked Questions: LightPDF vs Plume

How do LightPDF and Plume compare in monthly traffic?

How do their growth rates compare?

How does pricing compare?

What are alternatives to LightPDF and Plume?

More Head-to-Head Matchups

Best Alternatives to LightPDF & Plume (12)

Limitations

Plume

Strengths & Pros

Limitations