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150 DPI Document & KYC Scan Standard · 100% Client-Side

Change Image DPI to 150 Online

Calibrate certificates, marksheets, and A4 document scans to 150 DPI—the official middle-ground standard for UIDAI Aadhaar, scholarship portals, and compact PDFs.

Active Mode: 150 DPI Print Header • 100% Lossless
Drop any photo to convert to 150 DPI or browse files

Supports JPG, PNG, HEIC, WEBP, PDF, SVG, TIFF, AVIF, GIF, BMP

No file size limit Add unlimited photos 100% in-browser

No files selected yet. Drag & drop photos, documents or click browse above.

150 DPI vs 300 DPI for Multi-Page & Full-Sheet Documents

How 150 DPI keeps full-page certificates crisp inside tight KB limits:

Document SizePixels at 150 DPIPixels at 300 DPIRecommended KB Cap
A4 Marksheet / Degree (21×29.7 cm) 1240 × 1754 px 2480 × 3508 px 150 KB – 300 KB
US Letter Tax / Visa Form (8.5×11") 1275 × 1650 px 2550 × 3300 px 150 KB – 300 KB
Aadhaar / Voter ID Card Scan 500 × 318 px (CR80) 1011 × 638 px 50 KB – 100 KB
4 × 6 Inch Postcard / Receipt 600 × 900 px 1200 × 1800 px 80 KB – 150 KB

Combining 150 DPI Metadata with PDF or KB Compression

UIDAI myAadhaar, National Scholarship Portal (NSP), and university counseling portals routinely recommend "scan original documents in color at 150–200 DPI". If you photographed your marksheet with a smartphone, updating its DPI header to 150 DPI ensures automated intake checks pass.

Need the output as a PDF under 200 KB instead of a JPG? Simply switch Output Format in Stage 1 to PDF and select 200 KB in Stage 3 while 150 DPI remains active.

75% Fewer Raw Pixels than 300 DPI

When paired with physical cm/mm resizing in Stage 2, 150 DPI produces crisp, ultra-compact document scans.

Instant Header Update

Updates JFIF APP0 and PNG pHYs headers in under 10 milliseconds without cloud uploads.

Safe for Marksheets & IDs

Academic transcripts, caste certificates, and income proofs never leave your browser.

Related Presets, Calculators & Companion Studios

Jump directly to a pre-configured studio with exact settings locked in:

Change Image DPI to 200 →
200 DPI Portal Standard

PAN card, IBPS & SBI 200 DPI converter.
Change Image DPI to 300 →
300 DPI Print Standard

High-resolution 300 DPI passport & print tool.
Aadhaar PDF Compressor →
Under 100KB / 2MB

Compress UIDAI POI/POA scans privately.
Image to PDF 200KB →
Certificate to PDF

Convert marksheet photos into <200KB PDFs.
Change Image DPI to 72 →
72 DPI Web Screen

Standard web & email display DPI preset.
Change Image DPI to 600 →
600 DPI Archival

Academic journal & line-art 600 DPI preset.

Frequently asked questions

Is 150 DPI clear enough for A4 marksheets and QR codes?
Yes. At 150 DPI an A4 sheet measures 1240 × 1754 pixels, rendering standard 8pt–12pt printed text and Aadhaar QR codes cleanly while easily compressing under 200 KB.
How do I resize an A4 smartphone photo to true 150 DPI pixels?
Open Stage 2 (Resize Dimensions), select "cm", enter 21 × 29.7 cm at 150 DPI, and PixelKit automatically resamples the canvas to 1240 × 1754 px with a 150 DPI header.
Does changing DPI to 150 alone reduce file size in KB?
Changing metadata alone keeps byte size virtually identical; to also shrink file weight, pick a KB ceiling (such as 100 KB or 200 KB) in Stage 3.
Can I export 150 DPI PNG as well as JPG?
Yes. PixelKit writes standard PNG pHYs density chunks (5,906 pixels/meter = 150 DPI) and JPEG JFIF headers alike.