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Compress PDF to 100KB

Make a PDF smaller than 100 KB for forms and portals with a strict limit. Your file never leaves your device. Other sizes: 50 KB · 200 KB · 300 KB · 500 KB · 1 MB · 2 MB · any size

0 bytes uploaded — how we check Works offline Lossless first

Use the tool

Target File Size
Custom: KB
Drop your PDF here
or click to select a file
Choose PDF
—
Original size: —
Compressing...
—Original
→
—Compressed

How it works

1
Target is set to 100 KB — change it if your form allows a different size
2
Choose your PDF — it never leaves your device
3
It first tries a lossless clean-up. If that is not small enough, it turns each page into a picture and picks the sharpest resolution that fits
4
Download the PDF — the result tells you the final size and which method was used

How to get a PDF under 100 KB

100 KB is a tight limit. A single scanned page usually fits at a comfortable resolution, but every extra page shares the same 100 KB, so each page gets less detail. This tool tries a lossless clean-up first. If that is not enough, it turns each page into a picture and searches for the highest resolution and JPEG quality that still fits under 100 KB.

Tips: upload only the pages the form asks for (use the PDF splitter), and tick Clean black & white for scanned text documents. The result shows the DPI used — check that small print is readable before you upload.

What 100 KB does to a scan

On 22 Oct 2026 we ran two phone scans of an A4 document through this page (one page, 763 KB; three pages, 2.3 MB). The tool turns each page into a picture and picks the highest resolution that fits:

At such a low resolution, open the result and zoom in on the small print before you upload. If it is too blurry, send fewer pages, or use a bigger size if your form allows it.

The three-page scan at the other sizes: 50 KB → 40 DPI · 200 KB → 72 DPI · 300 KB → 100 DPI · 500 KB → 144 DPI · 1 MB → 200 DPI · 2 MB → 200 DPI.

Kaise use karein

  1. PDF file select karein.
  2. Target 100 KB pehle se set hai — zarurat ho to badlein.
  3. Compress karein aur download karein.

Privacy & security

Bahut se forms aur portals file size ki limit rakhte hain, aur scan kiye documents aksar kai MB ke hote hain. Yeh tool browser mein compress karta hai — koi upload nahi.

Common use cases

SSC CGL/CHSL application, UPSC form, IBPS documents, state PSC — kisi bhi govt portal ke size limit ke liye PDF compress karein.

Frequently Asked Questions

Is my PDF safe? Does it get uploaded anywhere?
Your PDF never leaves your device. All compression happens inside your browser using JavaScript. No file is uploaded to any server. This is especially important for sensitive documents like mark sheets, certificates, and identity proofs.
What if the PDF is still over 100 KB?
The tool tells you if it cannot reach the target. This happens with many pages at a very small target, because each page needs some minimum size to stay legible. Remove pages you do not need with the PDF splitter, then compress again.
Will text in the PDF remain readable after compression?
If the lossless step is enough, nothing changes and text stays selectable. If the pages had to be turned into pictures, text is still readable but can no longer be selected or searched, and small print can get soft at very low targets. The result shows the resolution (DPI) used — 100 DPI or more reads comfortably.

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Questions & problems

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