Compress PDF on Android: Reduce PDF File Size (No Upload)

To compress a PDF on Android, pick it in ResizePing, choose a compression level and tap Compress. You see the before and after size when it finishes. Never uploaded to our servers.

Large PDF documents can be difficult to email, share, or upload to online application portals that enforce file size limits, so a smaller PDF saves a failed upload.

Need to reduce PDF file size? ResizePing compresses PDFs on Android. Get it on Google Play.

Quick steps to reduce PDF file size on Android

Follow these steps to compress a PDF document on Android:

Open ResizePing, tap Select PDF on the home screen and pick one PDF, or share the PDF into ResizePing from Files, Drive, or another app.
When ResizePing asks What do you want to do?, choose Compress PDF.
Pick a Compression level: Smallest, Balanced or Best quality. ResizePing shows the estimated output size.
Tap Compress.
On the Compress Complete screen, check the Before and After size, then share or finish.

If a PDF is already as small as it can get because its pages are text, ResizePing tells you it cannot be shrunk further.

Why PDF files can be large

PDF file sizes vary depending on the content inside them:

Scanned documents and images: Scanned PDFs that contain high-resolution photos or full-page scans tend to be much larger than text-only documents.
Embedded media: Documents with graphics, charts, or multiple image attachments increase file size quickly.
Portal upload caps: Many job portals, government exam forms, and visa applications enforce maximum file size limits and reject files that exceed them. Check the size limit the form asks for before submitting.

If you need to hit a specific file size limit

If an upload form or portal requires your document to stay under a strict threshold such as 100 KB or 200 KB, see our dedicated guide on how to get a PDF under 200 KB.

Other PDF tools in ResizePing

Alongside PDF compression, ResizePing on Android includes other tools for managing documents on your phone:

Split PDF and extract pages: If a document is still large or you only need part of it, you can remove unnecessary pages. See how to extract pages from a PDF on Android using the split PDF and extract pages tools.
Merge PDF: To combine multiple PDF documents into a single file, see how to merge PDF files.
PDF to JPG images: To turn document pages into image files, see how to convert a PDF to JPG on Android.
Photos to PDF: To turn pictures or photos into a PDF, see how to combine photos into one PDF.

Completed tasks are saved in a searchable history so you can re-run any job in one tap.

Privacy

Your files never leave your device.

Frequently asked questions

How do I compress a PDF on Android?

Open ResizePing, tap Select PDF, pick the PDF, choose Compress PDF, pick a compression level and tap Compress.

Can I reduce PDF file size directly on Android?

Yes. ResizePing on Android includes a compress PDF tool to shrink PDF documents on your phone.

Does ResizePing upload my PDF to a server?

No. Your files never leave your device.

What if my PDF is still too large after compressing?

If a scanned PDF with many images is still too large, you can use the split PDF or extract pages tool to keep only the pages required for your upload. See how to extract pages from a PDF on Android. For specific portal caps like 100 KB or 200 KB, read our guide on how to get a PDF under 200 KB.

What other document tools are available in ResizePing on Android?

ResizePing on Android includes tools to merge, split, extract pages, compress PDF, convert PDF to JPG images, and convert JPG to PDF.