PDF ExtractorYour PDF content, ready to reuse
Extract text, rich text and images for your next project.
Tiny4 Software Studio
Building Thoughtful Tools and Experiences
Focused on PDFs, language learning and life journaling. Thoughtful design and reliable technology for a simpler, richer everyday life.
Focused Products
Built over time
Privacy First
Safe by design
Global Users
Growing steadily
100K+
Global users
Trust and support
Trust and support
Three product lines
Thoughtful tools for everyday life.
Create, learn and get things done.
01
PDF →
Extract, organize and combine your documents.
PDF Extractor
PDF Easy CombinerBring your documents together
Arrange and merge multiple PDFs into one organized document.
02
Language Learning →
Build confidence through real conversations.
Nautilus · Nautilus Oral
Speak up, bring the world closer
Breakthrough tool for Japanese oral skills based on real-life scenarios. Evolve through real conversations, not rote memorization.
03
Life Journaling →
Keep everyday moments with words and photos.
Petanote · Petanote
Capture life, keep every moment
Lightweight and lovely sticky notes to capture your flashing moments and whimsical ideas anytime.
Our Philosophy
User-centered, Built for Lasting Value
We start from real needs and keep refining good products. Simple, reliable, and easy to use is the standard we keep coming back to.
10 yrs
Building products
100K+
Global users
3
Product lines
150+
Countries and regions
Blog / Guides
Guides, ideas, and updates across Tiny4 products
PDF Extractor
PDF to Word, Markdown, HTML and RTF: a guide to PDF Extractor
Turn PDF content into editable Word documents, Markdown notes, and readable HTML or RTF. Here is how the updated conversion workflow works.
food journal
How an Ordinary Bowl of Noodles Became a Life Journal Seen 11,000 Times
Ingredients do not need to be expensive, and life does not need to be dramatic. Petanote helps turn ordinary days into memories worth revisiting.
beginner journal
Can You Make Journals Without Drawing? An AI Journal App for Beginners
Beginners do not need more complicated tools. They need a lower starting point: one note, a few photos, and a cute generated result.
cute journal
How to Make Cuter Social Journal Posts with AI
Sharing life does not have to mean posting one photo. AI can turn food, outfits, travel, and small daily moments into cute journal pages.