Resize caste certificates, marksheets, and travel pass proofs to official Railway Recruitment Board portal specifications.
To compress a PDF for RRB: 1. Drag & drop your railway application document. 2. Select 'Exact Target Size' and enter 150 KB (or 85 KB for SC/ST travel pass). 3. Optionally toggle 'Convert to Black & White' to drop file size further. 4. Click 'Compress PDF' and upload your file on rrbapply.gov.in.
| Document Type | Mandatory Size | Format | Requirements |
|---|---|---|---|
| SC/ST Certificate (Free Railway Travel Pass) | 50 KB – 100 KB | PDF only | Mandatory to claim free sleeper class railway travel pass |
| Educational Marksheet (10th / ITI / NAC / Degree) | 100 KB – 200 KB | PDF only | Proof of prescribed educational or technical qualification |
| OBC-NCL / EWS Certificate | 100 KB – 200 KB | PDF only | Central Government format issued within the validity period |
| PwBD Disability Certificate | 100 KB – 200 KB | PDF only | UDID card or medical certificate showing disability percentage |
| Candidate Photograph | 30 KB – 70 KB | JPEG / JPG | Plain white background, 35mm x 45mm, clear face |
| Candidate Signature | 30 KB – 70 KB | JPEG / JPG | Running handwriting on white paper, black or blue ink |
The Railway Recruitment Boards (RRBs) conduct centralized recruitment examinations (CEN) for millions of candidates applying for NTPC, Group D (Level 1), Assistant Loco Pilot (ALP), and Technicians via rrbapply.gov.in (Last Verified: October 2026 for 2026–2027 Cycles).
Due to massive server load during the closing days of railway notifications, incomplete uploads or rejected file sizes can lead to missed application deadlines. Ensuring your certificates match the exact byte brackets before logging in prevents gateway timeouts.
Candidates claiming the free Second Class railway sleeper travel pass must upload their SC/ST community certificate during registration. The RRB portal imposes a strict 50KB minimum and 100KB maximum file boundary for this document.
If your scan is 105KB, the portal rejects it; if it is 45KB, the portal flags it as poor quality. PDFBolt's Target Size Mode allows you to enter 85 KB, producing a file that satisfies both the size threshold and human scrutiny.
Technical roles like ALP and Technician require proof of ITI trade certification or National Apprenticeship Certificates (NAC). These documents often contain intricate watermarks and embossed state technical education stamps.
PDFBolt optimizes raster scans while maintaining dark, high-contrast borders and seal lines. By stripping excess scanner noise and applying lossless Flate compression, documents remain perfectly legible when inspected by railway recruitment officers.
Per official rrbapply.gov.in guidelines: SC/ST community certificates for free travel passes must be 50KB to 100KB in PDF. Educational qualification marksheets and category certificates must be 100KB to 200KB in PDF. Photos and signatures must be 30KB to 70KB in JPEG.
Select 'Exact Target Size' and type 85 KB. This places your document right in the middle of RRB's 50KB–100KB bracket. If the scan is in color, enable 'Convert to Black & White' for crisp text and smaller size.
This error occurs when uploading educational certificates. Simply enter 150 KB in PDFBolt's Target Size input to ensure the output lands securely inside the required range.
Yes. PDFBolt handles multi-page documents seamlessly, downsampling background scanner noise while keeping marks, grades, and roll numbers crisp and verifiable.
No. PDFBolt operates 100% inside your browser RAM using WebAssembly. Your documents are never uploaded to any remote server or stored in any database.
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