How to reduce PDF size to 100kb online?

Upload your file to ClonyPDF and select 'Strong Compression'. If the file has color images, converting to Grayscale helps reach the 100kb target.

Is it possible to compress 2MB to 100KB?

Yes, for text-heavy documents. For image-heavy documents, significant quality reduction or converting to Black & White may be required.

Why do I need a PDF under 100KB?

Many legacy servers and government portals impose a 100KB hard limit to save server storage space.

Compress PDF to 100 KB (Strict Limit Fix)

Many portals enforce a rigid 100 KB file size limit. If your file is 101 KB, it gets rejected. Reducing a high-quality PDF to such a small size requires extreme compression techniques that standard tools often miss.

File must be under 100 KB?
Use our "Strong Compression" mode to fit strict limits.
Compress to 100 KB

What Happens During 100 KB Compression?

To get a 2MB file down to 100KB (a 95% reduction), our tool performs deep optimization:

Resampling Images: Reduces DPI specifically for screen viewing.
Font Subsetting: Removes unused characters from the file code.
Metadata Stripping: Deletes author info, thumbnails, and edit history.

Compression Expectations (Size Chart)

Can your file actually reach 100 KB? Here is a realistic guide:

Original File	Content Type	Result after Compression
1 MB	Mostly Text	~80 KB (Success ✅)
2 MB	Scanned Images	~150 KB - 200 KB
5 MB+	High-Res Photos	May require "Grayscale" mode

Pro Tip: If your file is stuck at 120KB, try converting it to Black & White (Grayscale). Removing color data is the fastest way to drop below the 100KB mark.

Common Uses for 100 KB PDFs

Signature / Thumb Impressions: Often limited to 20KB - 50KB.
ID Proofs (PAN/Passport): Strict 100KB limit on many sites.
Resume for Older Portals: Some legacy systems reject anything over 300KB.

Frequently Asked Questions

Can I compress a 10MB file to 100KB?

It is difficult without losing readability. A 10MB file contains too much data. We recommend splitting the PDF or re-scanning at a lower resolution first.

Why is my file still 105 KB?

Sometimes, the text font itself is heavy. Try using standard fonts (Arial, Times New Roman) before creating the PDF to save space.

Will the text remain readable?

Yes. Our algorithm prioritizes text clarity. We mainly degrade the invisible parts of the file to save space.