TECHSA ARTICLES · UPDATED AUGUST 14, 2026

Helpful reading for everyday online tasks

These short explainers are a starting point for a task; our linked guides cover the important topics in depth. We avoid “best tool” claims and focus on preparation, verification and privacy.

Merge PDFs in a deliberate order

Prepare cover letters, resumes, certificates or assignments, then inspect the page sequence and final upload size.

Prepare PDFs for an Indian job application

Organise resume and supporting documents around the employer portal’s file and size requirements.

Choose a private online PDF workflow

Understand browser-side processing, third-party library requests and the limits of handling sensitive files.

Troubleshoot a PDF that will not open

Check encryption, damage, browser memory and safer ways to recover an authorised original.

Turn document photos into a usable PDF

Improve light, alignment and page framing before converting phone images.

Check document quality before sharing

Review legibility, page order, orientation and sensitive information in the final copy.

Create a QR code people can scan

Plan contrast, quiet space, print size and a second-device scan before distribution.

Fix a QR code that will not scan

Narrow down blur, low contrast, cropping, glare and damaged printed codes.

Use UPI QR codes with care

Check recipient details in the payment app and keep a transaction receipt as the record.

Check a GST calculation

Work through tax-exclusive and tax-inclusive examples and confirm the rate for the transaction.

Use online calculators responsibly

Check inputs and understand what percentage, age and EMI estimates leave out.

Need a specific workflow? Browse the full guides collection or explore the tool directory.