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Compress PDF to 100KB for Government Job Applications in India

June 19, 20258 min read

The PDF Size Problem Every Government Job Aspirant Faces

If you have applied for any government job in India — SSC CGL, UPSC Civil Services, IBPS PO, or any state PSC exam — you have almost certainly hit this wall: the upload portal rejects your file because it is too large.

Government portals are strict about file sizes. And unlike private job portals, there is no workaround. If your PDF is 250KB and the limit is 100KB, the form simply will not submit.

This guide shows you exactly how to compress your PDFs to meet these limits, step by step.

File Size Limits on Major Government Portals

Here are the size limits commonly enforced by Indian government recruitment portals:

| Portal / Exam | Document | Max Size | Format |

|---|---|---|---|

| UPSC (Civil Services, NDA, CDS) | Photo | 40KB | JPEG |

| UPSC | Signature | 20KB | JPEG |

| UPSC | Documents/certificates | 100-300KB | PDF |

| SSC (CGL, CHSL, MTS) | Photo | 20-50KB | JPEG |

| SSC | Signature | 10-20KB | JPEG |

| SSC | Documents | 100KB | PDF |

| IBPS (PO, Clerk, SO) | Photo | 20-50KB | JPEG |

| IBPS | Signature | 10-20KB | JPEG |

| IBPS | Documents | 100-200KB | PDF |

| Railway (RRB NTPC, Group D) | Photo | 20-50KB | JPEG |

| Railway | Signature | 10-20KB | JPEG |

| State PSCs | Varies | 50-500KB | PDF/JPEG |

These limits are tight, especially if your documents are scanned copies. A single scanned page at standard quality is usually 500KB to 2MB — far above the 100KB limit.

How to Compress PDF to 100KB: Step-by-Step

Step 1: Check Your Current File Size

Before compressing, know what you are working with. On your phone, open your file manager and look at the file details. On a computer, right-click the file and select Properties.

If your PDF is:

  • Under 300KB: — Medium compression should bring it under 100KB
  • 300KB to 1MB: — Strong compression will likely work
  • Above 1MB: — You may need to combine compression with other steps (see tips below)
  • Step 2: Open Compressly

    Go to [compressly.live/compress-pdf](/compress-pdf) in your browser. This works on your phone, laptop, or any device with a browser. No app download or account creation needed.

    Step 3: Upload Your PDF

    Tap or click the upload area and select your PDF file. You can upload from your device storage, Google Drive, or any file source your device supports.

    Step 4: Select Strong Compression

    For government portal uploads, select strong compression. This gives the maximum file size reduction while keeping text readable. For most text-based documents and certificates, strong compression produces files that look clean and professional.

    Step 5: Download and Verify Size

    Download the compressed file. Check its size:

  • Under 100KB?: You are ready to upload.
  • Still too large?: Read the additional tips below.
  • Step 6: Upload to the Government Portal

    Navigate to the recruitment portal, select the compressed PDF, and upload. The file should now be accepted.

    What If Your PDF Is Still Above 100KB After Compression?

    Sometimes a single round of compression is not enough, especially for scanned documents with high-resolution images. Here are additional strategies:

    Strategy 1: Rescan at Lower Resolution

    If you are scanning the document yourself:

  • Set your scanner or phone camera to 200 DPI (not 300 or 600)
  • Use grayscale mode instead of color for text documents
  • Ensure the document fills the frame — avoid scanning with large margins
  • Then compress the new scan with Compressly.

    Strategy 2: Compress Images Before Creating the PDF

    If you are creating a PDF from images (like photos of your certificates):

  • First compress each image using Compressly's Image Compressor
  • Then combine them into a PDF
  • Then compress the PDF if needed
  • This two-step approach gives you much better results than compressing the PDF alone.

    Strategy 3: Crop and Clean the Scanned Document

    Before creating your PDF:

  • Crop out blank margins: around the document
  • Straighten: the scan if it is tilted
  • Remove blank pages: if any were accidentally included
  • Convert to grayscale: if the document does not need color
  • Each of these steps reduces the data in the file, making compression more effective.

    Strategy 4: Split Multi-Page Documents

    If a portal asks for individual certificates (10th marksheet, 12th marksheet, degree, etc.), upload each as a separate single-page PDF rather than combining everything into one large file. Single-page PDFs are much easier to bring under 100KB.

    Tips Specific to Each Exam Portal

    UPSC Applications

    UPSC is relatively generous with document sizes (up to 300KB for most documents). The main challenge is the photo and signature. For those:

  • Use Compressly's Image Compressor to resize and compress your photo to under 40KB
  • Signature scans should be on a white background with minimal margins
  • Save in JPEG format, not PNG
  • SSC Applications (CGL, CHSL, MTS)

    SSC has some of the strictest limits — 100KB for documents and as low as 10KB for signatures. Tips:

  • For the signature, write with a dark pen on white paper, scan only the signature area (not the full page), and compress aggressively
  • For documents, use grayscale scans at 200 DPI and compress with Compressly's strong setting
  • SSC portals are known for being slow — upload during off-peak hours if possible
  • IBPS Applications (PO, Clerk, SO)

    IBPS typically allows slightly larger files than SSC. Key tips:

  • Photo should be a recent passport-size photograph with light background
  • Compress photo to under 50KB in JPEG format
  • For document PDFs, medium to strong compression usually works
  • State PSC Applications

    State PSC portals vary widely in their requirements. Always check the official notification for exact size limits before preparing your documents. When in doubt, compress to 100KB — this meets almost every state PSC requirement.

    Common Mistakes to Avoid

  • Taking photos with your phone camera at full resolution. Modern phones capture at 12-48MP. This is way too much for a document scan. Use a scanner app or reduce camera resolution.
  • Saving scans in PNG format. PNG files are much larger than JPEG for photographs and scans. Always use JPEG for scanned documents and photos.
  • Compressing already compressed files multiple times. Repeated compression degrades quality without significant size reduction. If one round of compression is not enough, go back to the source and start with a better scan.
  • Ignoring the required format. Some portals specifically ask for JPEG photos and PDF documents. Uploading the wrong format will cause rejection even if the size is correct.
  • Waiting until the last day. Government portal websites often crash near application deadlines due to heavy traffic. Prepare and compress your documents well in advance.
  • Quick Checklist Before You Apply

  • [ ] Photo compressed to required size (typically 20-50KB, JPEG)
  • [ ] Signature compressed to required size (typically 10-20KB, JPEG)
  • [ ] All certificates/documents saved as PDF
  • [ ] Each PDF under the required size limit (usually 100-300KB)
  • [ ] File names are clear (e.g., "10th_marksheet.pdf", not "IMG_20250615.pdf")
  • [ ] Compressed files opened and checked for readability
  • Final Thoughts

    Getting your documents to the right file size for government job portals is a solvable problem. With Compressly's PDF Compressor, you can reduce most documents to under 100KB in seconds — for free, without signing up, and directly from your phone.

    Prepare your documents early, verify the size limits from the official notification, and keep compressed copies ready so you are not scrambling at the deadline. Good luck with your application.

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