Guides
Why Your Exam Photo or Signature Keeps Getting Rejected
The real reasons online exam and job forms reject your photo or signature — file size, dimensions, format and background — and exactly how to fix each one.
Photo & Signature Size for Every Major Exam (2026)
A complete, up-to-date reference of the photo and signature file size, dimensions and format for major Indian and Pakistani exams and forms — SSC, UPSC, PAN, IBPS, NEET, JEE, PPSC, FPSC, NTS and more.
How to Compress an Image to an Exact KB Size
A simple, step-by-step guide to compressing a photo to an exact file size like 10KB, 20KB or 50KB, on desktop or mobile, while keeping it as clear as possible.
JPG, PNG or WebP: Which Format for Form Uploads?
Understand the difference between JPG, PNG and WebP, why almost every exam and job form wants JPG, and how to convert your image to the right format.
Photo Not Uploading on an Online Form? 8 Fixes
Eight practical fixes for when your photo or signature won't upload to an online exam or job form — from file size and format to browser and portal timing issues.
How to Reduce Photo Size in KB: The Complete 2026 Guide
A complete, plain-English guide to reducing your photo's size in KB for online forms. Learn what file size really means, how compression works, and how to hit an exact limit like 20KB on any device without wrecking the quality.
How to Compress a Signature for Online Forms
A complete guide to compressing and resizing your signature for online exam and job forms. Learn the right file size in KB, pixel dimensions, how to scan it, and how to hit limits like 10KB or 20KB without the strokes breaking up.
Image Dimensions vs File Size Explained
Confused why a 'small' photo is still too big for a form? This guide explains image dimensions versus file size in plain English — pixels, resolution, aspect ratio and how they all affect the KB.
Lossy vs Lossless Compression Explained
A simple, jargon-free explanation of lossy versus lossless image compression — how JPEG and PNG work, what compression artifacts are, and which to use for exam and job form uploads.
How to Convert PNG to JPG (and Why Forms Need It)
A step-by-step guide to converting PNG to JPG on any device, why online forms usually require JPG, what happens to transparency, and how to convert and compress to an exact KB size in one step.
How to Convert HEIC to JPG (iPhone Photos)
Your iPhone saves photos as HEIC, which most forms and websites reject. Here is how to convert HEIC to JPG on iPhone, Windows, Mac and Android, and how to stop your iPhone making HEIC in the first place.
How to Compress a Photo on Android
A step-by-step guide to compressing and resizing a photo on any Android phone — reduce the file size to an exact KB, resize the pixel dimensions, and convert to JPG, with and without apps.
How to Compress a Photo on iPhone
How to compress and resize a photo on iPhone to an exact KB size, handle the HEIC format, use the Shortcuts and Mail tricks, and hit a form's pixel dimensions — all on iOS.
Passport Size Photo: Pixels, cm and KB Explained
What are the exact dimensions of a passport size photo in centimetres, pixels and KB? This guide explains 3.5x4.5 cm, 413x531 pixels, DPI, background rules and how to make one at the right size for any form.
Why Is My Image File So Large?
Wondering why your photo is several megabytes when a form wants a few KB? This guide explains the three reasons image files get large — pixels, format and quality — and exactly how to make them smaller.
DPI, PPI and Print Size Explained
What do DPI and PPI actually mean, and when do they matter? A simple guide to resolution, the 300 DPI rule, how pixels relate to print size, and why DPI is irrelevant for online uploads.