Guides & articles
14 practical articles on file formats, compression, documents and privacy. Written for people, updated when things change.
Images (5) Audio (1) Video (1) Documents (3) Privacy (1) Basics (2) Guides (1)
Images
The Complete Guide to Image Compression: JPG, PNG, WebP and AVIF
How image compression really works, which format to choose for photos, screenshots and logos, and how to shrink pictures for websites, email and forms without visible damage.
5 min read · Read guide →Photo and Signature Size for SSC, UPSC, IBPS, RRB, NEET and JEE Forms
Get your photo, signature and documents to the exact KB size Indian exam and recruitment forms ask for - in a minute, free, with a before/after check.
3 min read · Read guide →How to Reduce Image Size to Under 100 KB for Online Forms
Exam forms, job portals and government websites often demand tiny photo files. Here is how to hit the limit without ruining your picture.
3 min read · Read guide →Photo and Signature Size for Online Application Forms in India: 20 KB, 50 KB, 100 KB
Job, exam, scholarship and bank forms reject uploads that are even slightly over the limit. Here is a simple routine to prepare a passport-style photo, signature and scanned documents that pass first time.
3 min read · Read guide →How to Convert HEIC Photos to JPG (iPhone Pictures on Windows and the Web)
iPhones save photos as HEIC, which many websites, printers and Windows apps cannot open. Here is how to turn them into JPG or PNG without losing quality.
2 min read · Read guide →Audio
Video
Documents
The PDF Handbook: Merging, Printing Several Pages per Sheet and Keeping Files Small
How PDFs work, how to combine files in the right order, how N-up printing saves paper, which paper size to choose, and why some PDFs are huge.
4 min read · Read guide →OCR Explained: How Scanned Pages and Photos Become Searchable Text
What optical character recognition is, how a searchable PDF is built, what affects accuracy, and how to get copyable text from photos in English and Indian languages.
4 min read · Read guide →PDF & Word Splitter: Every Option Explained with Pictures and Examples
Keep one file or cut several, split by pages, equal parts, page numbers or size, and put 2, 4, 6, 8 or 16 pages on a sheet - each option with a picture and a worked example.
10 min read · Read guide →Privacy
Basics
File Formats Handbook: What the Extension Really Tells You
A beginner's tour of image, audio, video, document and archive formats: what extensions mean, why files will not open, and how to pick the right format for the job.
4 min read · Read guide →File Size Limits for Email, WhatsApp and Other Apps, and How to Stay Under Them
Typical attachment limits for popular email and messaging services, why files get rejected or recompressed, and simple ways to send large photos, videos and documents.
4 min read · Read guide →