Bulk Batch Photo Resizer & ZIP Downloader
Resize, crop, and compress up to 50 applicant photos or signatures simultaneously. Zero server disk persistence with instant structured ZIP download pre-calibrated for SSC, UPSC, Banking, and State PSC portals.
Drop Folder or Select Up to 50 Photos / Signatures
Built for Cyber Cafes and CSC centers. Batch resizes all student files in RAM and outputs an organized ZIP archive ready for portal upload.
Why Cyber Cafes & CSC Centers Choose Kagazo Bulk Resizer
Counter operators process dozens of exam applicants during peak registration windows. Kagazo replaces repetitive single-photo editing with parallel in-memory batch compression and structured ZIP packaging.
Process 50 candidate files in 2 to 3 seconds with hardware-accelerated canvas threads.
Bundles all converted photos and signatures into a clean ZIP archive ready for immediate extraction.
Every output file contains RFC-compliant binary density markers guaranteed to pass portal verification.
Official Exam Batch Specifications Reference
Standard upload limits applied automatically during parallel batch processing.
| Recruitment Authority | Photo Dimension & Size | Signature Dimension & Size | ZIP Output Naming Pattern |
|---|---|---|---|
| SSC CGL / CHSL / MTS | 3.5 × 4.5 cm (20–50 KB, 300 DPI) | 4.0 × 2.0 cm (10–20 KB, 300 DPI) | candidate_name_ssc_photo.jpg |
| UPSC Civil Services / NDA | 3.5 × 4.5 cm (20–300 KB, 300 DPI) | 3.5 × 1.5 cm (20–300 KB, 300 DPI) | candidate_name_upsc_photo.jpg |
| IBPS PO / Clerk / SBI | 4.5 × 3.5 cm (20–50 KB, 300 DPI) | 140 × 60 px (10–20 KB, 300 DPI) | candidate_name_ibps_photo.jpg |
| TNPSC OTR (Group 1, 2, 4) | 3.5 × 4.5 cm (20–50 KB with Name/DOP) | 3.5 × 1.5 cm (10–20 KB, 300 DPI) | candidate_name_tnpsc_photo.jpg |
| Railway RRB NTPC / Group D | 320 × 240 px (20–50 KB, 300 DPI) | 160 × 80 px (10–40 KB, 300 DPI) | candidate_name_rrb_photo.jpg |
Counter Operator Recommendation: For best results, process candidate photos and candidate signatures in separate batches to preserve the respective 3.5:4.5 and 7:2 aspect ratios without cropping.
How to Batch Resize Exam Photos in 5 Steps
Select Multiple Photos
Drag and drop or select up to 50 applicant passport photos or signatures simultaneously from your counter workstation.
Choose Exam Target Preset
Select your target examination authority such as SSC, UPSC, Banking IBPS, State PSC, or specify custom millimetre dimensions.
Review Batch Parameters
Confirm the targeted KB limits, pixel aspect ratios, and whether files are portrait photographs or horizontal signatures.
Parallel In-Browser Processing
Click Process All. Hardware-accelerated canvas workers crop, compress, and inject 300 DPI JFIF headers into each file concurrently.
Download Consolidated ZIP Archive
Download the cleanly packaged ZIP file containing all compliant images with standardized candidate filenames ready for portal upload.
Common Batch Processing Errors and How Kagazo Fixes Them
Bandwidth Bottlenecks on Slow Connections
Traditional server tools upload each 10MB photo over internet connections, taking minutes. Kagazo processes all 50 files entirely in local browser RAM in 2 to 3 seconds with zero network latency.
Stretched or Squashed Candidate Signatures
Batch processing portrait photos and landscape signatures with the same preset causes terrible aspect ratio distortion. Kagazo enforces dedicated aspect profiles for photos versus signatures.
Scrambled File Names Causing Portal Mix-Ups
Downloading 50 files named "IMG_3920.jpg" leads to disastrous mix-ups across different candidate application forms. Kagazo auto-indexes files with clear prefix tags and roll sequences inside the ZIP.
Tab Crashes When Uploading 50 Camera RAWs
Uploading 50 ultra-high-resolution smartphone captures can exceed browser heap limits. Kagazo sequences memory buffers and triggers immediate canvas garbage collection to prevent memory crashes.
Frequently Asked Questions (Bulk Batch Resizer)
Expert advice for Cyber Cafe operators, CSC centers, and multi-applicant batches.
Q1.How many files can I process simultaneously in a single batch?
You can upload, calibrate, and compress up to 50 candidate photos or signatures at once. The engine automatically processes each image in parallel through client-side HTML5 canvas worker threads and bundles them into a clean, organized ZIP archive in just 2 to 4 seconds.
Q2.Are applicant photos or signatures saved on Kagazo servers?
Never. Kagazo strictly operates with zero-cloud RAM processing. All files are loaded directly into browser memory buffers, processed client-side via hardware-accelerated WebAssembly and Canvas APIs, and purged immediately after the ZIP archive is generated. No citizen data is ever uploaded or stored.
Q3.Can I resize both photos and signatures together in one batch?
For optimum aspect ratio precision, we recommend running photographs in one batch under the Photo preset (e.g., 3.5 × 4.5 cm, 20–50 KB) and signatures in a second batch under the Signature preset (e.g., 140 × 60 px, 10–20 KB). This ensures that portrait and landscape aspect ratios are never distorted.
Q4.Does the ZIP download retain proper filenames for each candidate?
Yes! The engine appends the target specification code and index to each file (e.g., candidate1_ssc_photo.jpg, candidate2_ssc_photo.jpg) so Cyber Cafe and CSC operators can easily map processed files back to the respective candidate registration forms without administrative confusion.
Q5.Does this bulk tool inject required 300 DPI headers into the exported files?
Yes. Every processed image inside the downloaded ZIP file contains valid JFIF binary density markers (0x012C / 300 DPI). This eliminates common recruitment portal validation rejections that flag images lacking high-resolution camera metadata.
Q6.What should Cyber Cafe operators do if candidates bring different exam specifications?
We recommend grouping candidate files by examination type into separate folders before uploading. For example, process all SSC CGL applicants in one 30-second run, followed by IBPS Banking applicants in the next run. This guarantees uniform aspect ratios and compliant KB bounds.
Q7.How does client-side ZIP packaging work without uploading files to the cloud?
Kagazo utilizes JSZip running in an asynchronous Web Worker thread. Compressed image byte buffers are converted into compressed zip streams directly in browser memory and triggered as a single local file download via a blob URL.
Q8.What image formats are supported for bulk batch resizing?
Kagazo accepts JPG, JPEG, PNG, WEBP, and modern HEIC/HEIF camera photos from iPhones and Android devices. All outputs are converted into standardized, universally compatible baseline JPEG images required by government servers.
Q9.Why do recruitment portals reject bulk-edited photos from generic image editors?
Generic bulk desktop editors often strip essential metadata markers or save files as progressive JPEGs. Government servers mandate baseline sequential JPEGs with 300 DPI density tags and strict byte bounds between 20 KB and 50 KB, which Kagazo strictly enforces.
Q10.Is there any daily file limit or fee for processing batch applicant photos on Kagazo?
No. Kagazo is 100% free and unlimited for all users, including high-volume Cyber Cafe, CSC kiosk, and digital service center operators. You can process hundreds of candidate photos every day without creating an account or paying subscription fees.