Guides and tips to get the most out of our free online tools
Learn how to combine multiple PDF files into one document online for free, in 3 simple steps.
Reduce any JPG or PNG photo to an exact KB size for exam forms and job applications — free and instant.
Reduce your PDF file size for SSC, Railway, Bank PO and other exam forms — free, instant, no signup required.
The correct format for cheque and invoice amounts in words, plus a free online converter for Indian Rupees.
Sign a PDF online in seconds — draw or type your signature and place it anywhere on the document. Free, no printing, no signup.
Learn how to create a custom meme online for free — drag text anywhere, pick fonts, add stickers, apply filters, and download with no watermark.
Interactive size checker plus exact KB and pixel specs for every major Indian government exam in 2026.
Split PDF and Crop PDF solve different problems. Learn the difference, when to use each, and how to fix scanned PDFs, exam forms, and oversized files for free.
Remove open and permission passwords from a PDF for free, no software. Learn the difference between password types and what to do if you've forgotten it.
ITR filing last date is July 31, 2026 for salaried taxpayers. Which ITR form to choose, old vs new regime compared, and what happens if you miss the deadline.
The EMI formula explained with a real ₹40 lakh example, current 2026 interest rates, tax benefits under Section 24(b)/80C, and RBI's prepayment rules.
Standard cement-sand ratios for plastering, brickwork, and concrete, the dry volume factor everyone forgets, and a free calculator for exact bag-and-CFT quantities.
The formulas timber merchants, stone suppliers and contractors actually use to measure material in CFT, with worked examples and common billing mistakes.
Bigha in West Bengal is not the same as Bigha in Uttar Pradesh. A state-by-state breakdown of India's land units, with conversion formulas.
The dry volume method, mix ratios explained, and worked examples for plastering, brickwork and concrete — so you never run short of cement mid-job again.
The D²/162 formula that every reinforcement supplier and site engineer uses, with a full weight chart and worked examples for slabs, beams and columns.
The dry volume method for concrete, M-grade ratios explained, and worked examples for slabs, footings and columns.
The formula, wastage percentages, tile adhesive, box quantity, bathroom and kitchen examples, and vitrified vs ceramic tiles.
Coverage rates, primer, exterior and ceiling paint, cost estimation, and worked examples for small and large rooms.
Which barcode format to use, how EAN-13/UPC-A checksums work, scanner types, printing tips, and GS1 registration explained.