Compress PDF to 100 KB
Many upload forms accept PDFs only up to 100 KB. PDF to MB compresses your file to exactly 100 KB — or just under — in seconds, right on your Android phone. Nothing is uploaded to any server.
Limits like 100 KB are typical for government portals, visa application systems and online forms that only accept very small attachments.
Your files never leave your phone
All compression runs on your device — nothing is ever uploaded to the cloud.
How to compress a PDF to 100 KB on Android
Install PDF to MB from Google Play and open your PDF in it.
Enter 100 KB as the target size — or tap the closest preset.
Tap Compress. The result lands at or just under 100 KB — share or save it.
Why PDF to MB
Exact size targeting
Ask for 2 MB, 500 KB, anything. The output is guaranteed at or just under your target, measured on the real file.
Text stays crisp
Smart mode recompresses only the images and leaves text and vector graphics untouched, so documents stay sharp and selectable.
Scans handled too
Scanned or image-only PDFs are re-rendered at just the right resolution to still meet your size limit.
Private by design
Compression runs entirely on your phone. Your files are never uploaded to a server or shared with anyone.
Compressing a PDF to 100 KB — common questions
How do I compress a PDF to 100 KB on my phone?
Install PDF to MB, open your PDF, type 100 KB as the target and tap Compress. The app guarantees the output lands at or just under 100 KB.
Will the quality be bad at 100 KB?
PDF to MB keeps the highest quality that still fits 100 KB. In PDFs with real text the text stays perfectly sharp — only the images are recompressed.
Is my PDF uploaded to a server?
No. Compression runs entirely on your device and even works offline. Your file never leaves your phone — important for contracts, IDs and other sensitive documents.
What if my PDF can't be reduced to 100 KB?
The app shows the smallest achievable size for your file before you compress. If 100 KB is below that, you simply get the smallest possible file — no surprises.
Is this a PDF size reducer to 100 KB?
Yes — PDF to MB is a PDF size reducer with exact targeting: instead of vague quality presets, you type 100 KB and the app shrinks the file to exactly that size or just below. It also works as a general PDF compressor for making any PDF smaller.
Compress your PDF to 100 KB now
Free, private, and on-device.
Whatever you call it — a PDF size reducer, shrinking a PDF, reducing PDF file size, or just making a PDF smaller — PDF to MB does it with one difference that matters: you set 100 KB as the target, and the app guarantees the output fits it.