A LITTLE KNOW-HOW GOES A LONG WAY

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Clear steps for the tasks that keep coming back. Learn what to choose, what to check and when a tool has reached its limit.

70 practical guides and comparison methods

Everyday & India · HOW TO

Split trip and party expenses fairly: shares, repayments and paise

Separate who paid from who benefited. Record individual expenses, the people sharing each one and repayments already made.

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Everyday & India · HOW TO

Calculate bill percentages and review a spoken calculation

Use explicit formulas for bills and percentage changes. Review every number in a spoken calculation before calculating.

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PDF & documents · TEST METHOD

Best PDF compression tools: a reproducible test

Choose a compressor by what survives the export, as well as the bytes it saves. This is a test method, with no declared winner or invented measurements.

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PDF & documents · HOW TO

Reduce a PDF below 100 KB, 200 KB or 1 MB

A size limit is a constraint to measure against, not a promise that every document can meet it without losing detail.

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PDF & documents · HOW TO

Why your PDF is still large

Page count is only one reason a PDF is large. Scans, high-resolution pictures, embedded fonts and attachments can dominate its size.

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PDF & documents · HOW TO

Lossless and lossy PDF compression

Lossless optimization changes storage without intentionally reducing visual detail. Lossy workflows trade image detail or document structure for smaller output.

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PDF & documents · HOW TO

Merge PDFs without uploading them

Put several PDFs into one file on your device, then check the order before you send it.

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PDF & documents · HOW TO

Edit a resume without a watermark

A PDF is a finished layout, so a small visual edit and a fully editable source document are different jobs.

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PDF & documents · HOW TO

Review Aadhaar and PAN redaction carefully

Treat automated detection as a suggestion list. Review every page and every place an identifier may appear.

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PDF & documents · HOW TO

Black boxes are not always redaction

A black rectangle can hide a word visually while leaving it readable by copy/paste or extraction.

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PDF & documents · HOW TO

Make a scanned PDF searchable

OCR adds recognized text to a scan so you can search it. The recognition needs review, especially for numbers and mixed languages.

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PDF & documents · HOW TO

Chat with documents without API keys

Local document chat uses a downloaded model on your device. There is no Gemini key to paste, but your browser needs enough memory and supported hardware.

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PDF & documents · HOW TO

Editable versus image-based Word conversion

A Word file can contain editable paragraphs or pictures of PDF pages. Decide which result you need before converting.

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Images & design · HOW TO

Prepare files for application portal limits

Get the required dimensions, format and size right together. Compression alone cannot fix a wrong aspect ratio.

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Images & design · TEST METHOD

Best image compression tools: a reproducible test

A useful image comparison measures visual quality, format support, bytes and processing friction. This page supplies a method, not a predetermined winner.

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Images & design · HOW TO

JPEG, PNG, WebP and AVIF compared

Match the image format to the content and the place you will use it. Photos, screenshots and transparent artwork have different needs.

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Images & design · HOW TO

Prepare application photos and signatures

A good application photo fits the requested frame without distorting your face or cutting off important details.

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Images & design · HOW TO

Remove location metadata from photos

Photos can carry metadata such as capture details and location. Re-encoding a copy helps remove stored metadata, but visible clues remain.

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Images & design · HOW TO

Portrait background removal on your device

Separate a portrait from its background using a model downloaded to your device. Inspect edges before adding a new background.

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Images & design · HOW TO

Create favicons from one image

A favicon needs to stay recognizable at tiny sizes. A simplified mark usually works better than a full wordmark.

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Website & SEO · HOW TO

Build a sitemap from your URLs

A sitemap lists canonical URLs you want search engines to discover. It does not guarantee that those URLs will be indexed.

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Website & SEO · HOW TO

Common robots.txt mistakes

Robots rules control crawler access. They do not make a URL private, and they are not a substitute for authentication.

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Website & SEO · HOW TO

What search-result previews can tell you

A search preview helps you write a clear title and description. Search engines can choose different text and layouts.

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Website & SEO · HOW TO

Review structured data before publishing

Structured data should describe what visitors can actually see. Valid JSON is only the first check.

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Website & SEO · HOW TO

Audit a saved HTML page privately

An imported HTML audit checks the markup you supply. It cannot see live server responses or every change made by JavaScript.

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Text & data · HOW TO

Clean duplicate rows in CSV files

Define what makes a row duplicate before deleting it. Similar-looking rows can represent different records.

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Text & data · HOW TO

Compare two versions of text or code

A difference view shows what changed between two versions. Whitespace choices influence what appears as a change.

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Private AI · HOW TO

What private AI writing requires

Local AI can draft from facts you supply after an explicit model download. You remain the editor and fact checker.

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Private AI · HOW TO

Review AI-generated meeting action items

Turn a supplied transcript into a reviewable task list. An inferred owner or deadline must not quietly become a commitment.

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Audio & video · HOW TO

Video compression in a browser

Video compression trades bitrate, dimensions and sometimes frame rate for size. Browser memory and codec support limit large jobs.

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Audio & video · HOW TO

Edit SRT and VTT subtitles

Subtitle editing is about timing and meaning as well as format conversion. Review the file alongside the actual recording.

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PDF & documents · HOW TO

Verify that file processing stays on your device

Check network behavior during a synthetic job rather than accepting a privacy claim at face value.

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Identity & certificates · HOW TO

How to change your name on Aadhaar

Understand the official route for a name correction, prepare the right evidence and check your receipt. Your Aadhaar number and OTP stay on the official service.

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Travel & deliveries · HOW TO

How to check PNR status on Indian Railways

Use the railway’s official passenger enquiry, read booking and current status separately, and check again when your journey approaches.

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Travel & deliveries · HOW TO

Prepare for a Passport Seva application and appointment

Find the official application route, use the document advisor for your case and make a tidy appointment checklist.

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Identity & certificates · HOW TO

DigiLocker: issued documents versus uploaded scans

Know whether a document came from its issuer or was uploaded by you, then use the appropriate record for the task.

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Identity & certificates · HOW TO

Voter registration or correction: choose the right ECI form

Use the Election Commission’s form descriptions to distinguish a new registration from a correction or another request.

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Money & records · HOW TO

Check your EPF passbook using the official member service

Find the EPFO passbook service, review the right member record and keep your login details out of third-party tools.

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Travel & deliveries · HOW TO

Find your driving licence renewal route on Sarathi

Select the correct state and service on the official portal, then prepare only the evidence it requests.

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Travel & deliveries · HOW TO

Track an India Post consignment on the official website

Find the official Track ’N Trace service, use the consignment reference there and keep delivery details private.

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Education & students · HOW TO

NSP scholarships: OTR, applications and the next check

Separate One Time Registration from a scholarship application. Find the current scheme instructions and prepare evidence without sharing student identifiers here.

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Education & students · HOW TO

APAAR and ABC: which student-record route should you use?

Understand academic identity and credit records before creating another account. Start with your school or college’s current instructions and the official APAAR resources.

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Education & students · HOW TO

Get issued marksheets and degrees through DigiLocker NAD

Find academic awards issued by your board or university, understand why a record may be missing and keep verified originals intact.

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Education & students · HOW TO

Find the right NTA admit card and exam instructions

Locate the official route for your examination, check the document type and prepare for the exam using that session’s instructions.

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Education & students · HOW TO

Check university recognition and online or distance programmes

Check the awarding institution, programme, delivery mode and admission session before paying. A familiar university name alone does not answer every recognition question.

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Education & students · HOW TO

SWAYAM courses: learning, certificates and college credit

Choose a course for its syllabus and workload, then check certificate and credit rules separately. Plan your time before enrolling.

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Education & students · HOW TO

NIOS admission: choose the right stream and prepare your files

Use the current prospectus to identify your admission route and subject choices. Keep application preparation separate from an eligibility decision.

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Education & students · HOW TO

Find learning resources through the National Digital Library

Search by subject, level and resource type, then check the provider’s access terms. Build a reading plan from useful resources rather than collecting endless links.

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Jobs & skills · HOW TO

Search jobs on NCS and check recruiter claims

Use National Career Service for job discovery, verify the employer and prepare a truthful application. Watch for people charging for supposed NCS services.

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Jobs & skills · HOW TO

Apprenticeship India: candidate registration and opportunity checks

Find the official apprenticeship route, read the opportunity and distinguish training terms from a promise of permanent employment.

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Jobs & skills · HOW TO

Choose a Skill India Digital course with clear expectations

Compare prerequisites, provider, syllabus and assessment before enrolling. Choose the learning outcome you need rather than a badge alone.

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Identity & certificates · HOW TO

Find income, caste and domicile certificate services for your state

Find the correct state and issuing department before preparing evidence. Certificate names, eligibility and application routes differ by jurisdiction.

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Identity & certificates · HOW TO

Find the official birth or death certificate route

Start with the registrar for the place of the event. Separate registration, a certificate copy and record corrections before choosing a service.

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Identity & certificates · HOW TO

Use myScheme to find relevant government schemes

Discover possible schemes, read their actual rules and follow the responsible department’s application route. A suggested match is only a starting point.

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Money & records · HOW TO

Prepare records for the official income-tax e-filing portal

Organise source records, choose the correct official help and review a filing carefully. This guide does not select your tax regime or return form.

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Money & records · HOW TO

Search unclaimed deposits through RBI UDGAM

Use the official search service to identify possible records, then follow the relevant bank’s claim process. Search results and ownership are separate questions.

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Health services · HOW TO

ABHA and digital health records: check consent before sharing

Find the official health-account route and understand record linking and sharing. Keep medical identifiers and confidential reports out of public forms.

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Health services · HOW TO

Find an official eSanjeevani teleconsultation route

Locate the national telemedicine service and prepare a concise record for a consultation. Availability and suitability are determined by the service and clinician.

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Business & founders · HOW TO

Find the official free Udyam registration route

Read the government’s MSME registration instructions and distinguish the official portal from paid intermediaries. Prepare accurate business records first.

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Business & founders · HOW TO

Check GSTIN details against an invoice

Use the official GST taxpayer search and compare the displayed registration details with your records. A registration lookup is one check, not proof of a transaction.

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Business & founders · HOW TO

DPIIT startup recognition: application and benefit checks

Find Startup India’s recognition route and check the current requirements. Recognition, funding, tax benefits and a public directory listing are different outcomes.

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Consumer rights & safety · HOW TO

Report financial cyberfraud: official routes and evidence

For suspected financial cyberfraud, report promptly through official channels and contact your bank. Preserve transaction evidence before doing any optional file preparation.

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Consumer rights & safety · HOW TO

Prepare a complaint for the National Consumer Helpline

Write a clear chronology, preserve purchase records and use the official consumer grievance route. Track the acknowledgement and the response.

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Consumer rights & safety · HOW TO

Lost phone: find the official CEIR blocking route

Use the official lost-device service, secure your accounts and keep report details. Device blocking is different from tracking or guaranteed recovery.

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Images & design · HOW TO

Open HEIC photos and TIFF scans with local image conversion

A saved iPhone photo can use HEIC, and a scanned document can use TIFF. These formats may need a dedicated decoder in a browser. IndiaDigital loads its decoder only when you process a chosen file and exports the first image or scan page as JPEG or PNG.

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Audio & video · HOW TO

Convert WhatsApp voice notes and iPhone voice memos without uploading

A voice note often arrives as OGG/Opus, while an iPhone voice memo commonly uses M4A. Change the format when your recipient or editor cannot open the original. Keep the original recording: a new extension alone does not change its codec.

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Audio & video · HOW TO

MOV, MKV and WebM to MP4: when to copy and when to encode

MP4 and MKV are containers; H.264, VP8 and other codecs describe the streams inside. A container change can sometimes preserve the encoded streams. When the destination or target player cannot support them, encoding is necessary.

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Audio & video · HOW TO

Make recordings easier to hear: loudness, fades and silence

Loudness normalization, gain and silence trimming solve different problems. Normalization adjusts perceived programme loudness, gain applies a fixed level change, and silence trimming removes intervals below a threshold. None separates speech from music or repairs a clipped recording.

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Audio & video · HOW TO

Extract sound, text subtitles and useful frames from video

A video may contain separate picture, audio and subtitle tracks. Extracting an existing track is different from recognising speech or reading captions drawn into the picture. Start with media inspection to see what is present.

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Audio & video · HOW TO

Make a short GIF, boomerang or product clip on your device

Use still-image GIFs for a short sequence, video GIFs for a small excerpt, and MP4 for longer material. GIF often becomes larger than a modern video because it uses limited-colour frames and lacks modern video compression.

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Useful guidance, honest evidence.

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