Practical guides for PDFs, photos, forms and money

Short, step by step help for the small jobs that waste your time: shrinking a file for a portal, making a letter, working out a loan.

6 November 2026 · 4 min read

How to check if a GSTIN is valid (format, checksum and state code)

What the 15 characters of a GST number mean, how the check character works and how to confirm a supplier before you pay.

6 November 2026 · 4 min read

Leave application format for school and office, with examples

A short leave application you can copy for a student or an employee, with the details every application needs.

6 November 2026 · 5 min read

How to calculate EMI: the formula, a worked example and a quick shortcut

The EMI formula in plain words, a car loan example and how to compare loans by total interest.

6 November 2026 · 5 min read

Old vs new tax regime: how to decide which is better for you

A simple way to compare both regimes using your own numbers, and the deductions that make the old regime win.

6 November 2026 · 4 min read

Resignation letter format: simple samples you can copy

A short, polite resignation letter with a sample for immediate notice, a standard notice period and a mid-month exit.

6 November 2026 · 5 min read

How to make a rent receipt for HRA claims (format, PAN rule and a free generator)

What a valid rent receipt must contain, when you need the landlord's PAN and how to make 12 monthly receipts at once.

6 November 2026 · 5 min read

How to reduce a PDF to 100 KB or 200 KB for a job or scholarship portal

A step by step way to hit an exact PDF size limit, with the order of steps that works best for scanned documents.

6 November 2026 · 4 min read

Photo must be under 20 KB for an exam form? Resize it on your phone in 2 minutes

Exam and job portals ask for a photo between 10 KB and 50 KB. Here is how to hit the exact size without blurring your face.

5 November 2026 · 3 min read

PDF, Word or JPG: which file format should you use?

A plain guide to picking the right format for sharing, editing and uploading.

5 November 2026 · 5 min read

How to convert a bank statement PDF to Excel or CSV

Turn a PDF statement into rows you can sort, filter and total.

5 November 2026 · 4 min read

Is it safe to use free online PDF tools? What to check first

Many sites upload your file to a server. Here is how to tell, and when it matters.

5 November 2026 · 4 min read

How to resize a photo for passport, exam and job forms

Exact pixel and KB limits are the number one reason a form upload fails. Here is how to meet them.

5 November 2026 · 4 min read

How to merge your documents into one PDF for visa, bank and college forms

Put ID, address proof and forms into one ordered PDF so the reviewer sees everything in the right order.

5 November 2026 · 5 min read

How to compress a PDF for email and job portals without ruining it

Most portals cap uploads at 1 MB or 2 MB. Here is how to shrink a PDF to the limit and still keep it readable.