
SpecialistOpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
SpecialistOpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
Fillout records 3,923,917 monthly visits with -9.7% month-over-month growth and Freemium pricing. LightPDF records 1,742,568 monthly visits with -15.3% growth and Freemium pricing.

Free AI-powered PDF editor, converter and reader for every device
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | fillout.com | lightpdf.com |
| Pricing Model | Freemium | Freemium |
| Monthly Visits | 3.92M (3,923,917) | 1.74M (1,742,568) |
| MoM Traffic Delta | -423.16K (-9.7%) | -314.58K (-15.3%) |
| Primary Market & Share | 🇺🇸 United States (38.6%) | 🇮🇳 India (24.9%) |
| Direct Visits / mo | 2.31M | 442.07K |
| User Rating | 4.4 | 4.2 |
| Supported Platforms | Website | Website |
Build powerful forms, surveys and quizzes with AI in minutes
Describe the form you need in plain language and Zite generates a branded form with logic, file uploads, and payments.
Add conditional logic, intelligent routing, and multi-step workflows to automate what happens after each response.
Respondents can log in to update their answers, and forms can be restricted to internal users only.
Use custom themes, fonts, logos, custom CSS, your own domain, and embed forms as popups, sliders, or full-screen pages.

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.

SpecialistOpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
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.
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.
SpecialistEnterprise-grade neural machine translation, AI writing refinement, and real-time voice translation across thirty-plus global languages.
Offers 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.
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 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.
Broader template library and multi-channel sharing features, but less flexible multi-page layout customization than Fillout.
Excels at developer API integration and chatting with PDFs, but lacks comprehensive traditional PDF editing tools.
SpecialistSuperior privacy-first encryption and secure data handling, but more restrictive workflow automation and styling capabilities.
SpecialistSuperior privacy-first encryption and secure data handling, but more restrictive workflow automation and styling capabilities.

Faster AI form generation with built-in logic, but fewer advanced database integration and multi-page routing features.