150 KB PDF Compressor
Compress any PDF to under 150 KB in seconds. Server-side Ghostscript compression delivers the best quality at your target size. Perfect for government forms, job applications, and email attachments.
This tool is completely free!
No credits will be deducted • Unlimited usage
Upload your PDF
Drag & drop or click to browse
Secure Server-Side Compression
Your PDF is compressed using Ghostscript on our secure server. Files are deleted immediately after processing.
How to Compress PDF to 150 KB
Upload PDF
Drag & drop or click to upload your PDF file. Supports files up to 10 MB. You can upload multiple PDFs at once.
Choose Target Size
Select 150 KB (default) or any other target: 50KB, 100KB, 200KB, or 500KB. The compressor optimizes for your exact target.
Download
Click Compress — Ghostscript processes your PDF server-side for the best possible compression. Download the result instantly.
Why Compress PDF to 150 KB?
150 KB is one of the most common file size limits on online portals. Here are situations where you need a 150 KB PDF:
Government Form Uploads
SSC, UPSC, Railway, State PSC, and many government portals require uploaded documents to be under 150KB or 200KB.
Job Application Forms
Recruitment portals, company career pages, and HR systems often limit resume/document uploads to 150KB.
University & College Admissions
Admission forms, mark sheets, and certificates often need to be uploaded as PDFs under 150KB.
Email Attachments
Sending PDFs via email? 150KB PDFs load faster, don't bounce, and are easier for recipients to download on mobile.
Banking & KYC
Bank account opening, KYC verification, and loan applications frequently require compressed document uploads.
Online Exams
NEET, JEE, CAT, GATE registration portals often have strict file size limits for document uploads.
Why Ghostscript Compression is Better
Image Re-encoding
Ghostscript can re-encode images inside your PDF to lower DPI and JPEG quality, which is the single biggest factor in reducing PDF size.
Font Subsetting
Embeds only the characters you use instead of the full font files, saving significant space in text-heavy documents.
Structure Optimization
Removes duplicate objects, optimizes the PDF stream, and applies Flate compression to all remaining data.
Iterative Refinement
Our tool runs up to 10 compression passes, each time adjusting DPI and quality to get as close to your target as possible.
Which Target Size Should You Choose?
| Target | Best For | Quality |
|---|---|---|
| 50 KB | Strict portals, quick sharing, thumbnails | Lower — heavy compression on images |
| 100 KB | Most government forms, SSC/Railway uploads | Good — acceptable for scanned docs |
| 150 KB | Standard for most portals — recommended default | Very Good — ideal balance |
| 200 KB | Job applications, university uploads, KYC | Excellent — minimal visible loss |
| 500 KB | Presentations, reports, email attachments | Near-original — light compression |
CompressNow vs Other PDF Compressors
| Feature | CompressNow | Others |
|---|---|---|
| Compression Engine | Ghostscript (professional) | Browser JS / basic API |
| Target Size Accuracy | Iterative — hits target precisely | Approximate / no guarantee |
| Target Presets | 5 sizes (50KB–500KB) | 1–3 quality levels |
| Multiple Files | Yes | Often limited |
| Speed | 2–10 seconds | 10–60 seconds |
| File Safety | Deleted immediately after | May store for days |
| Daily Limits | Credit-based (fair use) | Strict free limits |
Frequently Asked Questions
How to make a PDF 150 KB?▼
Upload your PDF to our tool, ensure 150 KB is selected as the target (it's the default), and click "Compress PDF to 150 KB". Our Ghostscript engine will iteratively reduce image DPI, JPEG quality, and optimize the PDF structure until it fits under 150KB. Download the result instantly.
Can I compress a scanned PDF to 150KB?▼
Yes! Scanned PDFs are essentially images inside a PDF wrapper. Our tool re-encodes these images at lower DPI and JPEG quality to reduce file size. Very large scanned documents (10+ pages) may not reach 150KB while remaining readable — in that case, try 200KB or 500KB.
Does this tool cost money?▼
The tool uses a credit system. You get free credits when you sign up. PDF compression costs 3 credits per file. If your PDF is already under the target size, no credits are deducted.
What's the maximum PDF file size I can upload?▼
You can upload PDFs up to 10 MB. For larger files, consider compressing them in stages or using a desktop tool like Ghostscript directly.
Will the text in my PDF still be selectable?▼
Yes! Our Ghostscript compression preserves text selectability and searchability. Only images are re-encoded to reduce size. Text, links, and bookmarks are maintained.
Can I compress multiple PDFs at once?▼
Yes! Upload multiple PDFs and they'll all be compressed to the target size. Each file uses 3 credits. You can download them individually or all at once.
Are my files safe?▼
Yes. Your PDF is uploaded to our secure server, compressed by Ghostscript, and the compressed version is sent back to you. The original and compressed files are both deleted immediately from the server. We don't store, read, or share your files.
What if the compressed PDF is still too large?▼
If 150KB can't be achieved (very rare for single-page documents), try selecting a lower target like 100KB or 50KB. For multi-page image-heavy PDFs, the minimum achievable size depends on the number of pages and image complexity.
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