Guides
Practical explanations of the problems our tools solve: why an upload gets rejected, how a tax rule works, what a prepayment really saves. Every number is worked out with the same calculators you can use on this site.
Forms and uploads
- Forms and uploads
Photo and Signature Size for Exam Forms in 2026: IBPS, SBI, SSC, UPSC, GDS and PAN
Pixel size and KB limits for photos, signatures and thumb impressions on IBPS, SBI, SSC, UPSC, India Post GDS and PAN forms, and how to meet them on a phone.Updated 11 November 2026 - Forms and uploads
How to Reduce a Photo to 20 KB or 50 KB Without Making It Blurry
Why phone photos are 2–5 MB, what actually makes a JPEG small, and a step-by-step way to get under 20, 50 or 100 KB while keeping the face sharp.Updated 11 November 2026 - Forms and uploads
Why Your “50 KB” File Gets Rejected: KB vs KiB Explained
Windows, Mac and upload portals count kilobytes differently. Learn why a file that shows 49 KB can still fail a 50 KB limit, and how to stay safe.Updated 11 November 2026 - Forms and uploads
How to Reduce PDF Size for Online Form Uploads
Why scanned PDFs are so large, how to scan smaller in the first place, and how to get a certificate or ID under 100 KB, 200 KB or 500 KB without losing readability.Updated 11 November 2026
Money and tax
- Money and tax
Old vs New Tax Regime for FY 2026-27: Worked Examples
The FY 2026-27 slabs for both regimes, the ₹12 lakh rebate, and three salary examples worked out in full, so you can see which regime saves more for you.Updated 11 November 2026 - Money and tax
HRA Exemption: How It Is Calculated, With an Example
The three-way rule that decides how much of your house rent allowance is tax-free, which cities count as metro from April 2026, and a worked example.Updated 11 November 2026 - Money and tax
Home Loan Prepayment: Reduce the EMI or the Tenure?
A ₹50 lakh home loan example showing how much interest a ₹5 lakh prepayment saves when you cut the tenure versus the EMI, and when each choice makes sense.Updated 11 November 2026 - Money and tax
How to Calculate GST: Adding, Removing, and the CGST, SGST and IGST Split
The 2025 GST slabs, the formulas to add GST to a price or remove it from an inclusive one, and when a bill shows CGST and SGST instead of IGST, with examples.Updated 11 November 2026