Guides
Short, practical how-tos for everyday document and calculation tasks. Each guide links to a free tool that does the job in your browser.
How to Compress a PDF for Upload
Many online forms and job portals only accept PDFs up to a fixed size. This guide explains why PDFs get large and how to shrink yours without making it unreadable.
How to Merge PDF Files Into One
Job applications, loan files and college forms often ask for a single PDF. Here is how to combine many files into one, in the order you want.
How to Make Passport Size Photos at Home
You can make passport-size photos from one picture and print a full sheet at any photo shop or on your own printer.
How to Mask Your Aadhaar Card Before Sharing
A masked Aadhaar shows only the last four digits of the number. It is a safer way to share a copy when the other party does not need the full number.
How SIP Returns Are Calculated
A SIP (systematic investment plan) invests a fixed amount every month. Here is the formula behind the result and a worked example.
How EMI Is Calculated
EMI is the fixed amount you pay every month on a loan. It is calculated from the loan amount, the interest rate and the loan period.
GST Calculation Explained
Whether you are billing a customer or checking a bill, you need to add GST to a price or take it out. Here are the formulas and examples.
Rent Receipt for HRA: What to Include
Salaried employees often submit rent receipts to claim House Rent Allowance (HRA). A good receipt is clear, complete and signed.
How to Reduce Image Size Without Losing Quality
Large photos are slow to upload and often rejected by forms. You can shrink them a lot while keeping them looking good.