Compress PDF

1. 01Drop in a PDF fileThe file stays on your device, with no upload to a server.
2. 02We compact the file structureLarge PDFs usually come from internal images and repeated objects. We re-save them more efficiently.
3. 03Download the smaller PDFSame layout and content, smaller file size, ready to email or upload.

• Compress a PDF for emailMany inboxes cap attachments at 10MB or 25MB. Compressing helps you stay under the limit without splitting the document or sending a link.
• Reduce PDF size before uploading to forms or portalsGovernment, HR, banking, and school portals often limit uploads to 2-5MB. Compressing lets you submit without rescanning at a lower setting.
• Compress a scanned PDFScanned documents are image-heavy and usually the largest. Savings here are more modest; for a big drop, also compress the images before building the PDF.
• Shrink a PDF for sharingA lighter file sends and opens faster over chat, WhatsApp, or a shared drive, and is friendlier on a phone or a slow connection.
• Make a large PDF easier to storeArchiving many documents in the cloud adds up. Compressing each file saves meaningful space over hundreds of PDFs.
• Lighten a PDF for your websiteA document offered for download loads faster when it is smaller, which improves the experience for visitors and saves bandwidth.

• A 30 MB scanned PDFScanned PDFs are mostly JPEG images. The tool may trim the structure, but the big weight is the scans themselves, so expect modest savings unless you re-compress the images first.
• A PDF presentation with large imagesFiles exported from PowerPoint or Keynote often carry unoptimized images and repeated elements, so cleaning up the structure can save meaningful space.
• A text-only PDFPDFs that are mostly text are already compact and usually will not shrink much. If that is the case, the result will show little or no savings, and that is expected.
• A PDF with many identical pagesA report or contract with the same header and footer on every page carries repeated objects. The tool detects and compacts those duplicates.

• Start with standard compressionRun the tool first and check the result. If the savings are small on an image-heavy file, compress the images before building the PDF for a bigger drop.
• Compress images before building a PDFIf you create a PDF from scans or photos, shrink the images first with an image compressor. A PDF built from lighter images is small from the start.
• Check the quality before sendingOpen the result and skim it before you send. Compression should keep the layout, but it is always worth a quick look for small text or fine detail.
• A small text PDF may not shrinkIf the file is already under a couple of MB and mostly text, it is already lean. Little or no change is normal and not a sign anything went wrong.

A PDF can hold text, vectors, images, fonts, metadata, and more. This tool uses pdf-lib to inspect the file and clean it up: it removes unused objects, merges identical ones, strips unnecessary metadata, and applies standard compression to the internal streams. All of this runs in JavaScript on your device, so the file is never uploaded. That is why it is a good fit when you want to compress a PDF without uploading it anywhere.

Most of a PDF's weight comes from images. Scanned pages and high-resolution photos are heavy; plain text and vector graphics are light. Repeated objects, embedded fonts, and edit-history metadata add to the total. This tool reduces size without re-encoding your images, so text stays crisp and pictures keep their resolution. The honest tradeoff: because it does not downscale images, the savings are smaller than a server tool that lowers image quality. "Without losing quality" here means the visible page is unchanged, not that you will always get a dramatic size cut.

Bigger savings: • PDFs exported from Word, PowerPoint, or Keynote with repeated elements • Reports and contracts with the same header and footer on every page • Files carrying large metadata or edit history Smaller savings: • Text-only PDFs that are already compact • Scanned PDFs whose images are already compressed • PDFs that were compressed before • Files already under about 1MB

Compressing is about size; sometimes a different tool is the better fix. • Still too big after compressing? Use Split PDF to break it into smaller files, or Delete PDF Pages to drop pages you do not need, then compress what remains. • Combining files? Merge PDF first, then compress the single result so you only optimize once. • Only need a few pages as pictures? PDF to JPG exports pages as images, which can be lighter for sharing a snapshot. • Adding Add Page Numbers or Add Watermark? Apply those first, then compress last so the final file is the smallest.

• The PDF did not get much smaller: it is probably text-only, already optimized, or mostly scanned images. Compress the images first, or accept that it is already lean. • The file is too large for browser memory: very large PDFs (near or above 100MB) can slow down or crash the tab. Split the file or delete pages first, then compress the parts. • A scanned PDF barely changed: the weight is in the scan images. For a real drop, re-compress those images before building the PDF. • The file fails to open or process: a damaged or password-protected PDF may not load. Unlock it (save an unprotected copy) or re-export a clean version, then try again.

Everything happens on your device. The file is not uploaded to Tooleem servers, nothing is stored, nothing is tracked, and there is no sign-up. Your original file is left as-is; you download a new, smaller copy. That makes it safe for sensitive documents such as contracts, medical records, and financial statements, which never leave your computer.

Is my PDF uploaded to a server?

No. All compression happens locally in your browser. The file is not uploaded to Tooleem servers, and your original file is never changed; you download a new, smaller copy.

How does the compression work?

The tool uses pdf-lib to remove duplicate objects, trim unnecessary metadata, and re-save the internal structure more compactly. It does not re-encode your images, so the visible page stays the same.

Why did my PDF not get much smaller?

Usually because it is mostly text and already compact, was compressed before, or is mostly scanned images. Because the tool does not downscale images, image-heavy files see smaller savings. If a file is already lean, little change is expected.

Can I compress scanned PDFs?

Yes, but the savings are modest. A scan is mostly image data, and this tool does not re-encode images. For a bigger drop, compress the images before building the PDF, or use a server tool that lowers image quality.

Will compression reduce quality?

The visible page is not changed. The tool cleans up structure rather than downscaling images, so text stays crisp and pictures keep their resolution. The tradeoff is smaller savings than tools that lower image quality.

What is the file size limit?

Up to about 100MB. Because everything runs in your browser, very large files use a lot of memory and may slow down or crash the tab.

What should I do if the file is still too large?

Split the PDF into smaller files, or delete pages you do not need, then compress what remains. If the weight is scanned images, re-compress those images before building the PDF.

Should I split or delete pages before compressing?

If the file is huge or you only need part of it, yes. Use Split PDF or Delete PDF Pages first to cut the file down, which also helps it process smoothly in the browser, then compress the result.

Can I compress a password-protected PDF?

Not while it is encrypted. An encrypted PDF must be unlocked before processing. If you have the password, open the file and save an unprotected copy, then compress that copy.

Is the text preserved, and is the tool free?

Yes to both. The text and layout are identical to the original because only the internal structure is changed. The tool is free to use with no sign-up.