Compress PDF Online Free
Reduce PDF file size to custom targets (100KB, 200KB, 500KB, 1MB) with surgical precision. Preserves stamp clarity, text sharpness, and formatting with 100% in-browser RAM privacy.
Portal maximum limit: ≤ 1000 KB
Click to select PDF or drag & drop
Marksheet, Degree Certificate, Community Certificate, or ID proof (up to 25MB).
Vector Preservation with Adaptive Raster Optimization
Standard compressors destroy resolution by converting entire documents into low-grade JPEGs. Kagazo uses hybrid stream decomposition: text and vector lines remain perfectly scalable at infinite zoom, while embedded high-resolution scanner images are compressed using Lanczos resampling.
Target exact file sizes required by government gateways without tedious trial and error.
Documents are parsed directly in your device memory buffer for 100% confidential processing.
Compress lengthy marksheets, contracts, and transcripts with individual page inspection.
Recommended Compression Targets & Portal Standards
Select the appropriate target size based on your specific application authority requirements:
| Target Band | Primary Use Cases | Compression Strategy | Compliance Note |
|---|---|---|---|
| 100 KB - 200 KB | TNPSC OTR, State PSC Marksheets, Caste Proofs | Strict Ceilings + DPI Downsampling | Ensures files never fall below 100KB or exceed 200KB limit. |
| 300 KB - 500 KB | UPSC ORA, GATE, University Admissions, Resumes | Balanced Raster Compression + Font Preservation | Preserves high-resolution signatures and official watermarks. |
| 1 MB - 2 MB | High Court e-Filing, Passport Seva, MCA ROC Documents | Vector Stream Optimization + JBIG2 Clean | Retains evidentiary typography for multi-page judicial briefs. |
| Custom / Extreme | Email Attachments, WhatsApp Sharing, Cloud Archival | Aggressive Color Quantization (72-150 DPI) | Maximum weight reduction while keeping letter text completely readable. |
Notice on Portal Ceilings: Most Indian state and central recruitment portals reject files that exceed their declared limit by even a single byte. Kagazo automatically incorporates a safety margin (e.g., 185 KB for a 200 KB ceiling) to ensure guaranteed server acceptance.
How to Compress a PDF in 5 Steps
Follow these simple steps to shrink your PDF file size while maintaining pristine document clarity:
Upload PDF Document
Drag and drop your single or multi-page PDF into the processing workspace or select from device.
Choose Target Size or Mode
Select from popular presets (100KB, 200KB, 500KB, 1MB) or use the custom slider to define your exact size.
Page Inspection & Exclusion
Review page previews. Exclude blank backsheets, instruction folios, or redundant pages if needed.
In-Memory Stream Optimization
Click Compress. Embedded images are resampled while vector typography and forms remain intact in RAM.
Instant Download & Verification
Verify file size and zoom into official rubber stamps using the preview loupe before instant download.
Common PDF Compression Errors and How Kagazo Fixes Them
Prevent document rejections caused by common PDF optimization mistakes:
Generic Aggressive Rasterization Blurring Seals
Crude online tools rasterize the entire PDF into a blurry low-res image. Kagazo separates text and vector streams to preserve high-contrast signatures.
File Too Small for State Recruitment Portals
Portals like TNPSC reject PDFs smaller than 100 KB. Kagazo features calibrated floor guards that maintain document density within the acceptable range.
Corrupted Fillable Form Fields After Compression
Traditional tools strip XFA and AcroForm dictionaries, making forms unreadable. Kagazo flattens and validates structure without breaking document hierarchy.
Sensitive Marksheets Stored on External Servers
Most cloud compressors save documents on remote servers. Kagazo processes 100% in local browser WebAssembly with zero data leaving your machine.
Frequently Asked Questions
Authoritative answers regarding PDF compression, security, and portal compatibility:
How does Kagazo compress PDF files without sacrificing text readability?
Kagazo uses intelligent stream-level parsing. Instead of flattening your document into a low-grade picture, it leaves font dictionaries and vector curves untouched while downsampling embedded scanner photos and background noise, keeping typography pin-sharp.
Can I compress a PDF to an exact KB size like 150KB or 200KB?
Yes. You can select one of our dedicated portal presets or enter a custom target KB. The engine dynamically calculates the optimal JPEG/WebP quality factor and DPI to match your target within a narrow 5% tolerance.
Are my private government IDs and tax documents safe with Kagazo?
Completely secure. Kagazo executes all compression algorithms directly inside your web browser via WebAssembly. Your files are never uploaded to any remote server or stored in the cloud.
Why did another compressor make my official stamp and signature unreadable?
Many generic tools apply uniform lossy compression across the entire page, degrading fine lines. Kagazo preserves high-contrast edge details so registrar signatures, university stamps, and QR codes remain fully legible.
What is the maximum file size I can upload for compression?
You can upload PDF files up to 100 MB directly into the browser. Multi-page documents containing dozens of pages are processed smoothly without server timeouts.
Does Kagazo add any watermark or Kagazo logo to my compressed PDF?
Never. All compressed files are 100% clean with zero watermarks, brand stamps, or modified author metadata.
Can I remove blank or unnecessary pages before compressing?
Yes. Our interactive page preview allows you to select, reorder, or exclude individual pages prior to compression, saving substantial file weight instantly.
Will hyperlinks and bookmarks in my PDF remain functional after compression?
Yes. Document outline trees, internal chapter bookmarks, and external web hyperlinks are safely preserved during the optimization process.
Which compression level is best for government job applications in India?
For UPSC and SSC, 100KB to 300KB is optimal. For TNPSC OTR, target between 150KB and 190KB (strictly above 100KB and below 200KB). For court filings, 1MB to 2MB is standard.
Can I compress password-protected PDF files?
You must first unlock the PDF using our free "Unlock PDF" tool by entering the known password, after which you can compress it to your desired file size.