What this tool does
Compress PDF to 100 KB opens the compress pdf to kb tool with this setting ready, so you only choose your file and tap once.
Scholarship, exam, job and government portals often reject documents above 100 KB, 200 KB or 500 KB. Scanned certificates and phone-made PDFs are usually much bigger. This tool redraws every page as a sharp image and lowers the quality step by step until the whole PDF is just under the size you choose. The result looks like the original, but the text becomes part of the picture, so it cannot be selected or copied, which forms do not need.
How to use it
- Choose your PDF.
- Tap the size your form allows, or type any KB.
- Tap Compress and wait a few seconds.
- Open the new PDF, check it reads well, and download.
Why 123ToolBox
Popular ways to use it
Questions people ask
How do I compress a PDF to 100 KB?
Choose the PDF, tap 100 KB and tap Compress. You get a PDF just under 100 KB.
Will the text still be readable?
Yes for most documents. If a PDF has many pages, very small sizes can blur it; then pick a bigger size or split the PDF first.
Can I copy text from the compressed PDF?
No. Pages are turned into images to make them small. Keep your original if you need to copy text.
Is my PDF uploaded?
No. It is compressed inside your browser and never leaves your device.
Why does it say “too small”?
Some PDFs have too many pages to fit in the size you picked. Choose a bigger size or remove pages with Split PDF.