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Guides on file formats, conversion, and getting the most out of your files — written by the team building Quikbench.
Photo and signature size for every major exam (2026)
SSC, UPSC, IBPS, SBI, RRB, NEET, JEE, CUET, GATE, CTET and more in one table — and how to hit the exact KB first time.
October 2026 PDFHow to reduce PDF size for government and job portals
Compress certificates and scans to 100 KB, 200 KB or 500 KB without making them unreadable.
October 2026 TaxOld vs new tax regime 2026-27: which saves more?
The new slabs, the ₹12 lakh rebate and worked salary examples — and a simple rule to pick the right regime.
October 2026 TaxRent receipts for HRA: what to include and how much to claim
What a valid receipt must show, when you need your landlord’s PAN, and how the tax-free HRA is worked out.
October 2026 ExamsPhoto with name and date for exam forms
How to add your name and date below your photo correctly, the usual sizes, and mistakes that get forms rejected.
October 2026 ImagesHow to compress images for your website
Make pages load faster without blurry pictures: resize, pick the right format, compress, and add the right HTML.
October 2026 PhotosHow to colorize black-and-white photos with AI
What AI colorization really does, how accurate the colours are, and how to share colorized images honestly.
October 2026 TypingHow to type in Tamil without a Tamil keyboard
The letters that need capitals, verified examples, and the words that need a manual fix.
October 2026 TypingHow to type in Punjabi without a Punjabi keyboard
Gurmukhi typing with English letters: the rules that matter, verified examples, and what the simple rules can't do.
October 2026 ImagesPixels, KB and DPI: what form sizes really mean
A plain-English guide to the numbers on photo forms, with a conversion table and worked examples.
October 2026 PhotosHow to upscale a small photo without it looking fake
What upscaling really does, how many pixels a print needs, and when it helps and when it doesn't.
October 2026 PhotosHow to remove a background from a photo
How to get a clean cut-out around hair and edges, transparent PNG vs JPG, and tips for product photos.
October 2026 TypingHow to type in Hindi without a Hindi keyboard
How phonetic typing works, the one rule that matters most (long vowels), examples, and tips for names.
October 2026 PhotosHow to take a passport photo at home: sizes & rules
Headline sizes and background rules for India, the US, the UK, Canada and Europe, how to shoot the photo, and why photos are rejected.
October 2026 MoneyHow loan EMI really works: interest, tenure and cost
Why the early part of an EMI is mostly interest, and how tenure and the rate change what you pay in total.
October 2026 PDFHow to scan documents with your phone into a PDF
Lighting, angle and surface tips for clear scans, and how to turn the pages into one tidy PDF.
October 2026 PDFHow to sharpen a blurry scanned PDF
Why scans look blurry, what really improves them, and when AI upscaling helps and when re-scanning is the only fix.
October 2026 PhotosHow to restore old family photos: a practical guide
Protect, scan and repair old photographs in the right order — and what AI restoration can and can't do.
October 2026 PDFScanned PDF not searchable? How OCR fixes it
Why scanned PDFs can't be searched or copied, how OCR works, what affects accuracy, and how to handle Hindi and other languages.
October 2026 PDFMerge, split and compress PDFs without uploading them
How browser-based PDF tools keep your files on your device, how to check it yourself, and what compression really does.
October 2026 ImagesJPG vs PNG vs WebP vs AVIF: which format to use?
A plain-English comparison of the four main image formats, with a simple way to choose and the mistakes to avoid.
October 2026 ImagesHow to compress a photo to 20KB, 50KB or 100KB
Why forms limit photo size, what really controls file size, and a step-by-step way to hit your limit without ruining the photo.
October 2026 ImagesWhy won't my iPhone photos open on Windows? (HEIC explained)
If your iPhone photos show up as broken or unopenable files on a Windows PC, HEIC is why. Here's what it is, why Apple uses it, and the easiest ways to fix it.
September 2026About these guides
Our guides are written by the team building Quikbench and cover the tools and formats we work with every day. Each shows when it was published, and we update guides when tools or formats change. We try to say plainly what a tool can and can't do. Found a mistake or want a topic covered? Tell us at support@quikbench.com.