Check & Set Photo DPI
Drop your photo below to read its DPI metadata from the JPEG header. If the DPI is too low or missing, use our setter tool to fix it. No files leave your device.
Drop Your Photo to Check DPI
Drag and drop your file here
Files are processed entirely in your browser for maximum privacy.
check_circleWhat this tool checks
- • DPI metadata from JPEG JFIF header
- • Horizontal and vertical DPI values
- • File size
cancelWhat this tool does NOT check
- • Actual pixel density (only reads metadata)
- • Image clarity or sharpness
- • Background color compliance
- • Portal-specific acceptance
DPI Requirements by Exam
| Exam | Minimum DPI | Recommended |
|---|---|---|
| SSC CGL / CHSL / GD | 100 DPI | 200 DPI |
| IBPS PO / Clerk / RRB | 200 DPI | 300 DPI |
| UPSC CSE / NDA / CDS | 200 DPI | 300 DPI |
| RRB NTPC / Group D | 100 DPI | 200 DPI |
| State PSC (TSPSC, APPSC) | 200 DPI | 300 DPI |
Complete Guide to Photo DPI for Competitive Exam Uploads
When applying for major government examinations or digital verification portals, candidates frequently encounter upload errors related to DPI (Dots Per Inch). While pixel dimensions define the total number of horizontal and vertical pixels in an image (such as 200 x 230 pixels), DPI represents the embedded resolution density metadata stored within the JPEG or JFIF file header. Exam portals operated by recruitment boards use automated script validators to inspect both pixel dimensions and header resolution tags before accepting an applicant's photograph.
Many modern smartphone cameras and social media messaging applications strip or default the DPI tag to 72 DPI to save header space. When an exam portal requires a minimum of 200 DPI or 300 DPI to ensure clear admit card printing and facial biometric verification, an image with missing or low DPI metadata is rejected instantly-even if the photo looks perfectly clear on your screen.
boltQuick Solution (TL;DR)
Drop your photograph into the checker above. Our tool instantly parses the binary JFIF/EXIF header to reveal exact horizontal (X) and vertical (Y) DPI values. If your photo reports under 200 DPI or displays "No DPI metadata found," click Set DPI to 300 to write standard 300 DPI tags directly into your file header without altering visual quality or compressing pixels.
When Should I Use This Tool? (Exam-Specific Use Cases)
Different recruitment authorities maintain distinct guidelines regarding photograph resolution and DPI verification:
- SSC (Staff Selection Commission - CGL, CHSL, MTS, GD): The SSC application portal enforces strict photographic clarity standards. While recent live photo captures are standardized, uploaded historical photos or scanned documents must contain valid resolution headers to prevent rejection during automated scrutiny.
- IBPS (PO, Clerk, RRB, SO Banking Exams): IBPS notifications explicitly mandate high-resolution document scans. Photographs and thumb impressions uploaded with missing resolution headers frequently trigger "Invalid Resolution Density" or "Blurry Image" warnings on IBPS registration servers.
- UPSC (Civil Services CSE, NDA, CDS, CAPF): UPSC online application portals require clear portrait uploads suitable for physical admit card printing and hall ticket verification. Ensuring your photograph has a verified 300 DPI metadata header guarantees crisp reproduction on official attendance sheets.
- Railway Recruitment Board (RRB NTPC, Group D, ALP): Railway application forms process high volumes of candidates and rely on strict automated filters to eliminate non-standard image files before issuing examination city intimation slips.
- State PSCs (TSPSC, APPSC, BPSC, UPPSC, MPSC): State public service commission portals frequently require candidates to upload scanned photographs and signature blocks standardized at 200 DPI or 300 DPI.
Examples: Before & After Scenarios
A candidate transfers their passport photo from an Android phone to their PC via WhatsApp. WhatsApp strips EXIF headers and defaults resolution to 72 DPI. When uploaded to an IBPS or State PSC application form, the portal flags: "Error: Image DPI is 72. Minimum required DPI is 200."
The candidate drops the file into this DPI Checker, verifies the missing/72 DPI value, and applies the 300 DPI setter. The tool rewrites the JPEG header with exact 300 x 300 DPI markers while preserving original pixels. The portal verifies the updated file immediately without error.
Troubleshooting Common Upload Rejections
- "DPI is correct but portal still says wrong size": Remember that DPI represents print density metadata, while pixel dimensions represent actual image size. If your photo has 300 DPI but is 1000 x 1000 pixels instead of 200 x 230 pixels, use our Photo Dimension Fixer to correct width and height.
- "File size exceeded after processing": Modifying DPI metadata adds or modifies only a few bytes in the image header. However, if your original file exceeds the portal's KB limit (e.g., above 50 KB for SSC), run the updated photo through our Exact KB Compressor afterward.
- "No metadata found in PNG or WebP files": Many government recruitment portals only accept standard JPEG (.jpg) files with JFIF header tags. Convert PNG or WebP files to JPEG before inspecting or setting DPI.
Best Practices for Competitive Exam Photos
- Always check both pixel dimensions (width x height) and DPI metadata before starting your application submission.
- Avoid sharing your official exam photo via chat applications that compress or strip header data; transfer files directly via USB cable, Google Drive, or email attachments.
- Maintain a master photograph saved at 300 DPI in standard JPEG format so you can quickly resize for any federal or state application form.
Privacy & Browser Compatibility
This DPI Checker and Setter operates entirely within your web browser using HTML5 File API and JavaScript binary ArrayBuffer reading. Your photographs are never transmitted to any external server, cloud database, or third-party API. All header inspection and DPI metadata injection occur locally in your browser memory, guaranteeing absolute data privacy for confidential personal identification photos. The tool is fully compatible across desktop and mobile versions of Google Chrome, Mozilla Firefox, Apple Safari, Microsoft Edge, and Opera.
Frequently Asked Questions
What is DPI and why does it matter for exam photos?
DPI (Dots Per Inch) measures how much detail a photo contains. Higher DPI means clearer, sharper images. Exam portals require minimum DPI so your face is identifiable during verification. A photo under 100 DPI may appear pixelated and get rejected.
How do I check my photo's DPI?
Drop your photo into the checker above - it reads the DPI metadata stored in the JPEG file header. Note: not all images have DPI metadata. Phone photos often report 72 DPI or have no metadata at all.
My photo's DPI is too low. How do I fix it?
Use our Set Photo DPI tool to update the DPI metadata without changing your photo's appearance. This works for exam portals that check the metadata value. If the portal checks actual pixel density, you may need a higher-resolution source photo.
Does changing DPI change the file size?
Changing only the DPI metadata does not affect file size - it changes how the image is interpreted for print size. Our DPI setter modifies only the header, keeping your photo's pixels and quality identical.