Blog
Guides and specifications
Longer explanations of the upload rules behind the tools — what the requirements actually are, why files get rejected, and how to fix them.
Why Your Exam Form Photo Keeps Getting Rejected
2026-08-30 · Eight reasons Indian recruitment portals reject a photo or signature, and how to fix each one before the deadl…
Image Size Requirements for Every Major Platform
2026-08-30 · The exact pixel dimensions and file size limits for Amazon, Etsy, eBay, Shopify, YouTube, LinkedIn and Instagr…
How to Compress an Image to an Exact File Size
2026-08-30 · Why most compressors overshoot or undershoot your target, and the binary search method that lands close to the…
How to Compress a PDF Without Ruining It
2026-08-30 · Why PDF compression is a genuine trade-off, what it costs you, and when you should fix the source document ins…
Résumé File Size: What Applicant Tracking Systems Actually Accept
2026-08-30 · The real limits, why an oversized résumé fails silently, and the fix that does not break the text parsing your…
Photo and Signature Sizes for Every Major Indian Exam
2026-08-30 · A single reference table of photo and signature requirements across SSC, IBPS, SBI, NTA and UPSC — with source…
How to Compress an Image to Any Size: The Complete Guide
2026-08-30 · Every size target from 10 KB to 2 MB, which one you actually need, and how to reach it without destroying the …
Every PDF Tool You Need, and When to Use Each
2026-08-30 · Which PDF operations are lossless, which permanently change your document, and how to pick the right one.…
Visa and Passport Photo Sizes: A Country-by-Country Guide
2026-08-30 · Exact photo specifications for the US, UK, Schengen, Canada, Australia, UAE, India, Japan, China and more — wi…
Free SEO Tools: Meta Tags, Robots.txt, Sitemaps and QR Codes
2026-08-30 · What each file actually does, the mistakes that cost traffic, and tools that generate them correctly.…
Text and Developer Tools That Never Upload Your Data
2026-08-30 · Why it matters that JSON formatters and text tools run locally, and what each of these actually does.…
Loan, Mortgage and Investment Calculators Explained
2026-08-30 · What EMI actually means, why early payments are almost all interest, and which figure to compare when choosing…