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

LightPDF records 1,742,568 monthly visits with -15.3% month-over-month growth and Freemium pricing. SciFig records 91,473 monthly visits with +4.7% growth and Freemium pricing.

AI scientific figure generator for publication-ready illustrations, charts and flowcharts
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | lightpdf.com | scifig.ai |
| Pricing Model | Freemium | Freemium |
| Monthly Visits | 1.74M (1,742,568) | 91.47K (91,473) |
| MoM Traffic Delta |
| -314.58K (-15.3%) |
| +4.07K (+4.7%) |
| Primary Market & Share | 🇮🇳 India (24.9%) | 🇺🇸 United States (28.1%) |
|---|
| Direct Visits / mo | 442.07K | 23.55K |
|---|
| User Rating | 4.2 | 4.1 |
|---|
| Supported Platforms | Website | Website |
|---|

Free AI-powered PDF editor, converter and reader for every device
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.
Translate whole documents, including scanned and image-based PDFs, into 20+ languages while keeping the original formatting and layout intact.
Convert invoices, receipts, bank statements and purchase orders into structured, editable Excel files automatically.
Edit text and images, OCR scanned pages, convert to and from Office formats, then merge, split, compress, watermark, sign and annotate.

AI scientific figure generator for publication-ready illustrations, charts and flowcharts
Three dedicated engines: Illustration, DataChart and FlowChart for scientific images, data plots and protocol diagrams respectively
Six illustration input modes: text, sketch, photo, PDF, reference figure and photo enhancement, backed by hundreds of discipline-specific templates
Data charts straight from CSV or Excel across around 50 chart types, including volcano plots, survival curves, forest plots and heatmaps
Fully editable output: change any label, recolor, redraw a region or shift a box and its arrows without regenerating the figure

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

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

SpecialistEnterprise-grade neural machine translation, AI writing refinement, and real-time voice translation across thirty-plus global languages.
#3Offers a completely free PDF editing and AI assistant experience, but lacks some of LightPDF's cloud-native collaboration features.
Offers a robust desktop suite for OCR and editing, but requires software installation unlike cloud platforms.

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

Provides a more polished cross-platform desktop PDF editing suite, but requires a paid upgrade for full AI features.
Offers a streamlined conversational interface for querying PDFs, but provides fewer document editing and conversion utilities.
Excels at developer API integration and chatting with PDFs, but lacks comprehensive traditional PDF editing tools.

Editable scientific figures and graphical abstracts from a prompt

SpecialistAI scientific figure and data chart generator for researchers
Features interactive PDF chat and form filling, but has fewer advanced desktop editing and conversion options.
SpecialistOpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
SpecialistAnthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing.
SpecialistEnterprise-grade neural machine translation, AI writing refinement, and real-time voice translation across thirty-plus global languages.
Offers a robust desktop suite for OCR and editing, but requires software installation unlike cloud platforms.
Provides quick browser-based PDF editing and e-signatures, but has a less advanced conversational AI assistant.
Editable scientific figures and graphical abstracts from a prompt
SpecialistAI scientific figure and data chart generator for researchers
Features interactive PDF chat and form filling, but has fewer advanced desktop editing and conversion options.