Turn anything into a cheatsheet
Add a topic, YouTube lecture, PDF, document or photo of notes. Get a dense, printable revision sheet with headings, bullets and tables, in the page count you choose.
Harappan Civilization
- Named after: Harappa
- Period: 2600 BCE to 1900 BCE
- Crops: Wheat, Barley, Lentil
- Rice was rare
Mahajanapadas
- Total: 16 kingdoms
- Monarchy: Magadha, Kosala
- Oligarchy: Vajji, Malla
Mauryan Empire
- Founded: 321 BCE
- Capital: Pataliputra
- Ashoka: 272-231 BCE
- Spread of Dhamma
| Point | Hinayana | Mahayana |
|---|---|---|
| Buddha | Human | God |
| Spread | Sri Lanka | China |
Buddhism
- Born: 563 BCE
- Sermon: Sarnath
- Tripitakas: Sutta, Vinaya, Abhidhamma
Stupas
- Sanchi: built by Ashoka
- Parts: Anda, Harmika, Chatri
Skip the options with a ready preset
Pick a template and it sets pages, style, exam focus and colours for you.
Start from what you already have
Each source has its own page, so the tool stays simple.
Topic or text
Type a topic or paste notes. Add a Wikipedia link too.
YouTube
Fetch a lecture transcript, check it, then generate.
Chapters, books and scanned pages with OCR.
Files and photos
DOCX, TXT, Markdown or a photo of notes.
Combine sources
Merge a PDF, a YouTube lecture and your notes into one sheet.
A sheet that looks made by hand
Everything is laid out like the printed cheatsheets students share.
Dense multi-column sheets
Three columns on A4 with coloured headings, bullet levels and page numbers, made to print and revise from.
Comparison tables
Sects, rulers, policies and sources are drawn as real tables with repeating headers.
Colour, black and white or dark
Colour-coded sections with highlighted dates, a printer-friendly mode and a dark paper mode.
English and Hindi
Read and write in both. Hindi shows correctly in the PDF.
Edit before you download
Change any line in the outline and watch the PDF preview update.
OCR for scans and photos
Scanned PDFs and photos become text first, then become a sheet.
Flow diagrams and mnemonics
Orders like planets or Mauryan rulers become simple flow diagrams, with mnemonic boxes for memory aids.
Highlights and must-know points
Dates, names and formulas are highlighted, and the most exam-favourite points get a marker and a tinted line.
Combine sources
Merge a PDF, a YouTube lecture and your own notes into one organised sheet.
Three steps to a printable sheet
Add your source
Choose Topic, YouTube, PDF or Files and add what you want to revise.
Pick the look
Set pages, text size, paper, colours, sheet style and exam focus.
Edit and download
Fix any line in the outline, then download the PDF.
Shaped for your exam
Pick a sheet style and an exam focus. Tiny and Byte prioritise what that exam asks.
Powered by Tiny, made by wondermayank
Tiny and Byte are the ThunderStudy models. Meet them at tiny.wondermayank.in.
Questions, answered
What is ThunderStudy Cheatsheet?
A free tool that turns a topic, text, Wikipedia page, YouTube lecture, PDF, DOCX, TXT file or photo of notes into a dense, printable cheatsheet PDF with headings, bullets and comparison tables.
Which AI writes the sheets?
Tiny and Byte, the ThunderStudy models by wondermayank. Tiny is fast. Byte is a bit slower and more careful, which suits long or detailed sources.
Is it free?
Yes. You get 5 free sheets per day on each device. Saved sheets can still be edited and downloaded after that.
Can I choose the number of pages and the text size?
Yes. Choose 1 to 12 pages or Auto, a text size from Tiny to Large, and A4, A5 or Letter paper. Every PDF has Made by ThunderStudy at the bottom-left and the page number at the bottom-right.
Does it cover every topic in my file?
It is built to follow your source in order and compress rather than skip. Big files are written in parts so every section is covered, and you choose the final length.
Does it work with scanned PDFs and photos?
Yes. Scanned pages and photos are read with OCR in English and Hindi. It is slower than normal files and works best on clear, printed text.
Can I get Hindi cheatsheets?
Yes. Set Write in to Hindi, or upload Hindi sources. Hindi text is drawn correctly in the PDF, but it is an image of text, so it cannot be selected or copied there.
Can I edit the sheet before downloading?
Yes. Open Edit outline, change or delete any line, and the PDF preview updates live. Tables, headings and bullets all follow a simple outline format.
What sheet styles and exam modes are there?
Standard, Formula sheet, Dates and timeline, Q&A flashcards and Last-minute revision, plus exam focus for CBSE 10, CBSE 12, CUET, NEET, JEE, SSC and UPSC.
What are flow diagrams and mnemonics?
When a topic is an order or a process, such as the planets or the Mauryan rulers, the sheet draws a simple flow diagram. Memory aids are shown in a Mnemonic box. You can add or edit them in the outline.
What does highlighting do?
Dates, names and formulas get their own colours, and the 3 to 6 most exam-favourite points per page get a marker and a tinted line. You can switch each highlight on or off.
Can I combine a PDF, a YouTube video and a topic?
Yes, on the Combine page. It merges two or three sources into one sheet organised by topic. Combining uses 3 of your 5 free daily sheets.
What are templates?
One-click presets such as CBSE Class 12 History, 3 pages, colour. They set pages, style, exam focus and colours so you only add your source.
Where can I get ready-made Class 12 and CUET cheatsheet PDFs?
On ThunderStudy: thunderstudy.indevs.in/cbse/cheat-sheet has ready-made Class 12 and CUET cheatsheet PDFs you can download.
Are my files and sheets private?
Files are read in your browser. Only the extracted text is sent to write the sheet. Sheets are saved in your own browser storage, and only basic usage and error data is logged, never your text.