Reduce PDF Size: Compress PDF Online for Free

Compress PDF – Reduce PDF Size Online for Free

Make any PDF smaller in seconds. This free tool shrinks large PDFs so they’re quicker to send, easier to share, and fit any size limit. Use it for emailing a report, sharing notes on WhatsApp, saving space on your phone, or uploading a document to a website.

Unlike many other compressors, your text stays searchable and selectable. Only the photos and scanned pages inside the PDF are compressed. Everything happens inside your browser, so your files are never uploaded to any server.

How to Compress a PDF

1. Choose your PDF. Tap Choose PDF, or drag and drop the file onto the box.
2. Pick a compression setting. Recommended works well for most files. If you need a specific size, choose Under a set KB.
3. Click Compress PDF. The tool shows the old size, the new size and how much smaller the file has become.
4. Download your PDF. Click Download PDF to save it. On phones, you can also use Share / Save to send it straight to WhatsApp, email or Drive.

When Do You Need to Compress a PDF?

• Email attachments: most email services limit attachment sizes, and smaller files send faster.
• Sharing on WhatsApp and Telegram: smaller PDFs send quickly and open faster, even on slow mobile data.
• Uploading to websites: job portals, college admission sites, government services and banks often set a size limit, such as 200 KB or 1 MB.
• Saving storage space: shrink large scanned documents, e-books and notes on your phone or laptop.
• Study material and notes: make heavy PDF notes and books lighter to store and share with classmates.
• Office and business documents: reduce the size of reports, invoices and presentations before sending them to clients.

Compress PDF to an Exact Size

Need a PDF under a particular size? Choose Under a set KB and tap one of the quick buttons (50 KB, 100 KB, 200 KB, 300 KB, 500 KB, 1 MB or 2 MB), or type your own limit. The tool automatically finds the best quality that fits, so your document stays as clear as possible.

If the size still won’t come down far enough, try Black & white. It makes scanned pages much smaller and works especially well for documents and certificates.

Compression Settings Explained

• Recommended: a good balance of small size and clear quality. Best for most PDFs.
• Under a set KB: compresses your PDF to fit a specific size.
• Maximum: the smallest possible file. Good when size matters most and slightly softer images are fine.
• High quality: gentle compression that keeps photos and scans very sharp. Good for printing.
• Black & white: turns photos and scanned pages inside the PDF black and white, for a much smaller file.

Your Text Stays Searchable

Many online compressors turn every page into a flat image, which makes the text impossible to search, select or copy. This tool works differently: it compresses only the photos and scans inside your PDF and keeps the text, fonts, links and drawings exactly as they are. Your compressed PDF works just like the original, only lighter.

If a very small size can’t be reached this way, the tool tells you clearly. It then offers an optional Compress more as images button. This makes the file smaller still, but the text will no longer be searchable, so the choice is always yours.

Which PDFs Compress the Most?

• Scanned documents and photos shrink the most, often by 80–95%.
• PDFs with pictures, such as brochures, reports, presentations and notes with diagrams, also reduce well.
• Text-only PDFs are usually small already. If a file can’t be made smaller without losing quality, the tool tells you so.

Safe, Private and Reliable

Your PDF is never uploaded anywhere. All compression happens on your own device, so even private documents like ID proofs, bank statements and certificates stay completely safe.

Before you download, the tool also checks that the compressed PDF opens correctly. If anything goes wrong, it won’t give you a broken file. It suggests another option instead.

Frequently Asked Questions (FAQs)